Summary of scooter fuel-saving measures

Sichong pedal Motorcycle Fuel Saving Measures summary [version 08]
　　　　
[Sequence] The Four-Chong piston engine is a troublesome engine with a complex structure, and the scooter driven by a belt speed change is a type with many complicated structures; in the days when ZJ was engaged in R & D in, some new progresses were made to these scooters. New content was added here for reference only by riders in the version.
　　
I. Significance of scooter fuel saving:
Although some people do not care about more fuel fees, the significance of fuel-saving for motor vehicles is not only a matter of private economic overhead, but also a matter of environmental protection. People who have some knowledge about the locomotive should know that if they supply more engines and the fuel is not thoroughly burned, it will turn into harmful pollutants to the human body. If they are discharged outside the vehicle, it will pollute the atmosphere. This kind of infully burned hydrocarbons floated in the air and cannot be avoided from being sucked into the human body, leading to neurological diseases, heart disease, and respiratory cancers.
Currently, urban residents are more popular with scooters. They only claim that the pedal of the bicycle has more than a dozen or tens of thousands in Nanjing. Although scooter drivers are simple and easy to use, there are many people who like it. However, such models consume the most fuel, which is also the model with the most hidden fault and the most likely to waste fuel. If you want to improve your vehicles or change your mounted models, you may be able to save 1 litre of fuel each month for each vehicle in the city. In the urban area, you can reduce the residual oil emissions of over one hundred tons of contaminated environments every month.
According to the usage of scooters by office workers in Nanjing, the average person uses an average vehicle for six days a week and travels about thirty kilometers a day. In such a year, about 9386 KM of each scooter traveled, almost 10 thousand kilometers. Relatively good light motorcycle scooter, usually consumes one hundred 5l of fuel every kilometers, equivalent to 5l of fuel per week; in this case, about 20 liters of fuel per month, only the fuel fee is more than yuan. (It can be said that the people who ride a scooter are more than those who ride a beam car. The fuel fee per month is equivalent to the loss of an old goose who drinks more than one wine .)
In such a year, about 1410 yuan of gasoline is consumed per scooter every year. The price of fuel for 08 years is about yuan. Better scooter in the version, which is about 284 kilometers or more, can save Yuan of gasoline fee every year. For some oil-consuming scooter with a 279-kilometer fuel-burning 3.0L grade, it is in turn necessary to add a ￥ fuel fee. Compared with beam trucks, the gasoline and repairs that have been burned during the past five years are enough to buy a beam car at the same price. Therefore, the oil consumption of scooter is a problem for people in the family, it is also an economic expense.
Based on the simplest motorcycle knowledge, the best way to reduce the fuel consumption and fault of motorcycles is to adopt models similar to the mounted beam cars. The price of these models is cheaper than the current pedal-assisted cars, fuel consumption is only the sixth of Scooter ~ Qicheng; but the relevant manufacturers in China do not produce scooters with mounted engines, so that I am very depressed and helpless. In order to improve the urban atmosphere, some fuel-saving research has been conducted on taxis and scooters, both of which have achieved a certain degree of effectiveness. Some fuel-saving theories and improvements related to scooter are made public as follows, which is only for reference by riders in this light Modi edition:
　　　　
2. There are six main factors that cause high fuel consumption of scooter itself:
1. Although the belt variable speed is easy to use, the belt transmission consumes more energy. Even if it is in hot cars, there are usually two-way transmission consumption, equivalent to running the road, it is almost less than three-way code. In the case of a cold car, the belt damping is greater, which almost consumes four of the output power of the engine. There is also the "belt damping" after the belt tray is worn out, which usually consumes nearly half of the engine's energy on the belt transmission system. In other words, almost three pieces of fuel on the scooter are consumed on the belt transmission system, otherwise, the same amount of fuel can run 40% more.
2. Because the current domestic scooter adopts the belt stepless speed transmission system, it is convenient for the residents of bottle cars to drive; however, the variable speed of the belt changes the transmission ratio according to the engine speed, rather than manually selecting the transmission ratio based on the driving speed and load as the mounted vehicle does not achieve high speed/low speed economic transmission. This "Change block" method makes it difficult for the engine to exert the optimal fuel efficiency. Therefore, the consumption rate of scooter remains high. Generally, the same amount of fuel can only reach 65% of the distance of the beam car.
3. In theory, although the constant pressure vacuum film carburetor can prevent newcomers from suddenly tightening the throttling caused by too low negative pressure = poor oil, however, this type of carburetor itself is a complex oil-consuming and fault-prone copy model. In the oil circuit structure of this type of carburetor, only idle speed and idle oil concentration can be adjusted, and the main oil needle cannot be adjusted. That is to say: the main oil system is preset in a very oily state, it is sufficient to adapt to the environment temperatures in the north and south sides and in the summer and winter seasons. How can such a design not be oily? How can I avoid fuel consumption when I call a scooter?
4. Although the shell of the scooter is relatively streamlined, most of the tires used by domestically-made scooters are very thick and short, and the wheels of some cars are almost similar to pumpkins. Compared with the 2.5-17 tires of Curved Beam trucks, its cross-country capability is very poor, and the driving resistance is relatively large. In the early years, I saw an overseas scooter with a 2.5-17 wheel. The frame was slightly larger and more comfortable, but I do not know why it has not been counterfeited in China.
5. During ZJ's development of pedal diesel vehicles over the past year, it was found that the camshaft of the Four-Chong engine is a loose accessory with relatively loose specifications, many engines encountered some odd problems in the pre-factory debugging after assembly, and finally found that the problem was mostly related to the camshaft. There are two cams on the camshaft responsible for intake and exhaust. These two cams determine the time when the intake valve and the exhaust valve are opened and closed, as long as there is a little error, the engine performance will be messy. The four Chong engine is quite sensitive to this, but many outsiders have no idea about it.
6. In the days of ZJ, a lot of research work has been carried out on the scooter ignizer, finally, we found that the popular imitation fuse on the market is a very simple and unreasonable ignition angle change curve. Its ignition effect is almost the same as that of the XH90 integrated igniter. Or, this version is similar to the Piecewise Double convex ignition developed in the early years. In the summer of 2008, after three months of tossing around with the JL group equipment, the localized ignator was finally developed. The angle-changing curve is more reasonable, which can greatly improve the performance of the scooter. For more information, see N special posts in the edition.
　　　　
Iii. fuel saving potential and effects of conventional Scooter:
At present, the pedal light friction (including fuel-driven vehicles) is normal, its fuel consumption rate is about 100KM/, more than this data is the belt tray wear or improper adjustment of the carburetor. When the fuel consumption of a vehicle increases to 100KM or more, it is generally caused by serious wear of the belt tray, or the electric heating and thickening failure on the carburetor is not closed. According to some pedal light-rubbing operations in normal condition of the current version, the improved light-rubbing operations not only increase the acceleration power, but also reduce the engine emission value. The fuel consumption is mostly less than 2L/100 KM, in summer, it can even reach 100 KM/60KM KM, equivalent to running about fuel per litre.
(The belt-driven scooter cannot be compared with the mounted beam car. Generally, the beam car can be 1.4L/100 KM. After the technical modification of this version, it can usually run to 120 ~ 150 KM/L. But the current scooter, due to the internal friction of the belt drive, the fuel consumption of kilometers is almost no less than 1.6L. It was originally planned to develop a super fuel-saving scooter using the beam engine in 2009. Using the latest super fuel-saving technology in the "sweat horse action", it could ensure that the gasoline ran over one hundred kilometers per litre. However, for various reasons, it seems that this plan has to be delayed .)
　　　　
Iv. Measures and principles of simple fuel-saving conventional Scooter:
In terms of the current Backward Design of conventional scooters, there are roughly 10 points of simple fuel-saving:
1. Improve the electric heating on the existing Carburetor: change its circuit to a light indicator to facilitate monitoring. Or change it to manual control. If it is not enough, It will completely close the fill-in Oil Circuit to reduce the fuel consumption failures.
2. Improve the carburetor: Enhance the atomization effect of the fuel foam hole, change the main oil needle of the carburetor to seasonal adjustment, and expand the gas distribution hole of the idle oil road, change the structure of the Negative Pressure thickening to the negative pressure oil reduction ,~~~.
3. Improve the throat nozzle into a shape with the effect of eddy current oil, and then with a new storage container produced in 08 years, so that the oil mist will be fully combined before entering the cylinder, improve the Engine Startup Performance and fuel saving rate.
4. the carburetor can't be changed, so it can be changed to a plunger Type Carburetor. It can be used to adjust the oil vapor concentration and reduce sub-pathological faults, and change the waste state of the old carburetor, which is always serious oil-rich.
5. Cut the front pulley sleeve by 1mm, so that the belt transmission speed is lower than the starting point. without affecting the starting performance, the engine speed can be reduced, saving a lot of fuel.
6. In winter, the hot air casing is added to the air filter inlet to let the engine suck in the hot air discharged after the engine heat dissipation, so that the vehicle can have the economic consumption rate close to the warm spring in the cold winter.
7. Further improve the ignition system circuit and enhance the ignition power and angular conversion performance. If you have the hands-on ability, you can modify the TB80 Chinese-made ignition in the version of 08 to improve the locomotive performance.
8. If you are not eager to speed up your car, you can use the heavier Puli beads to reduce the engine's disk-changing speed and save the fuel to a certain extent.
9. Check the camshaft in the cylinder head carefully. It is best to remove the camshaft and polish it again. For this part of content, the version has been introduced in a special post, which can save 10 ~ 20%, which is more efficient than installing the WX/WH system.
10. If the tire diameter is greater than that of air, the rolling resistance can be reduced. If conditions permit, replace the engine with a shift speed/chain drive.
[In the above ten aspects, the version has been introduced in special posts. The detailed content is about tens of thousands of characters, so it is inconvenient to pile up in this post. For details, please refer to them on your own. 〕
　　　　
5. Preparations before fuel saving for vehicles: Check whether the vehicle is in good condition. (This is only about the fuel-saving part .)
When a pedal motorcycle needs to improve fuel-saving performance to meet the basic requirements of environmental protection, first check whether all parts of the locomotive are still normal.
1. Is the tire exhausted? If the tire pressure is insufficient, the fuel consumption will increase by one ~ If the conversion is two, the path code can only be around the original octal.
2. How is the compression performance of the cylinder: If the cylinder is worn out and leaks, the efficiency of work will decrease, and it will be difficult to save fuel and start up; replacing the piston ring can solve the problem.
3. How is the gap between the valve: The camshaft is a running part, and wear is inevitable. Check every six months to keep the gap between the valve stem to ensure tight valve closure.
4. Spark plugs: Carbon Deposition is a serious oil-rich performance. You must adjust the carburetor in time. The electrode gap is difficult to start and must be repaired in time.
5. Belt tray condition: After five thousand km is used, you should pay attention to the wear condition of the front and back belt slide. If there is a check, it is very difficult to open the belt and it is very expensive.
6. Air Filter condition: Check every kilometers of traffic, clean up by the way; if the filter is blocked by water foam and dust, it will lead to a lot of oil from the carburetor.
7. Carburetor status: Check and adjust each three months according to the condition of the car. By the way, the carburetor cleaning agent will wash the gas configuration hole smoothly to avoid excessive oil.
8. Electric Heating and concentration status: the first cold start every day, you must warm the car for three minutes, when you feel that the concentration can be turned off, it is normal electric heating status.
9. Check whether the electric heating is closely closed: If the idle oil screw of the carburetor is screwed clockwise to the end, if the idle speed is not turned off, the electric heating is not tight.
10. Check each system of the circuit. If there is a power loss such as a leakage fault, the power will not be turned off, but will also cause fuel consumption.
　　　　
6. Modify the carburetor for the fuel-saving project: (the fuel-saving content is used here .)
The quality of the carburetor has a great impact on the performance of motorcycles, especially pedal motorcycles. faults and faults of the carburetor account for more than half of all faults.
When talking about the scooter carburetor, some people will like to talk about the brand. Here we will not talk about the vanity, but only about how to modify it to save fuel.
1. Expanded gas distribution hole and main oil foam hole: this carburetor is designed very impractical, and its gas distribution hole diameter is usually 5mm ~ Around 9mm MPa, often blocked by dust, resulting in more and more oil from the carburetor. After many practical experiments in this version, it is found that the gas-filling hole of idle speed and main oil is expanded, the gasoline atomization effect is better, not only the fuel-saving and power-adding effect is remarkable, it can also reduce the drawbacks of a small number of holes that are often blocked by dirt and dirt, and easy to be cleaned by the lotion.
According to the experimental results of several pedal-assisted carburetor, the gas distribution hole at one end of the carburetor Inlet can be expanded to 0mm ~ 5mm or so, not only reduces the amount of output, but also rich gas distribution to participate in gasoline atomization, engine power also has a tendency to improve. The main oil needle of this carburetor is usually not adjustable. If the main oil is too much after the test run, you can add several small foam holes to the main oil foam tube to increase the gas distribution to reduce the main oil output.
2. modify the main oil needle: the design of this carburetor is unreasonable. The main oil needle of most carburetor is not adjustable, unlike the main oil needle on the mounted car carburetor, there are five ring groove in the head that can be clamped with a small snap ring to change the installation height. The simple method is to increase the foam hole of the main oil foam tube to reduce the output of the main oil. In winter, the method of adding a small gasket is used to increase the main oil needle and increase the outlet oil. The standard practice is to first engrave five rings on the main oil needle and find a small snap ring to hold the main oil needle like a plunger carburetor. You can also weld more than one clip on the original main oil needle, tapping the M3 thread, adjusting and tightening the M3 nut.
3. Modify the negative pressure spring: There is a spring in the main oil plunger membrane bowl of the constant pressure vacuum film carburetor. Its elastic hardness varies with the carburetor, and there seems to be no unified standard. According to the principle that it is driven by a negative pressure, changing its elastic hardness will play a role in the supply performance of the main oil. According to the related negative pressure principle, if this spring is changed to a soft point, the gas can be added to reduce the oil to facilitate acceleration. If this spring is changed to a hard value, the negative pressure in the throat tube will be higher, the main oil and idle oil will be concentrated, and the locomotive may speed up slowly. We do not recommend that you modify this item as needed. Generally, there are not so many spring spare parts on hand. It is difficult for the carburetor to recover after correction.
4. Change the Electric Heating Concentration: Electric Heating Concentration is a convenient thing for Scooter friends. However, if it fails, it is also relatively concealed, which will cause problems such as unstable conditions and high fuel consumption. We recommend that you concatenate a light bulb in the circuit to monitor its power-on status. If the accelerator pump on the carburetor works, it can be used for additional fuel during the start of the cold car. The large spring in the electric heating and thickening parts can be reversed immediately, so that the small plunger oil needle will always be pressed over the thickening oil circuit, which is equivalent to canceling this oil-consuming part. From then on, the troubles of this part have gone through a hundred times.
5. cancel negative pressure thickening: on the side of the carburetor, there is a negative pressure chamber that can make idle oil more concentrated. Its structure principle is to close the large air hole of idle oil when the negative pressure increases, so that the oil vapor can be enriched. It is said that the theory is to prevent the exhaust pipe from being fired when the throttling is disabled. This kind of device will bring fuel consumption factors to the vehicle, and may also fail due to a small amount of holes in the structure, resulting in unstable performance of the carburetor. If you increase the idle gas hole size of the carburetor inlet, you can eliminate its function. If you have some manual skills, you can also change it to a structure that increases the oil vapor concentration when the negative pressure is reduced. This is a more advanced and reasonable fuel-saving measure.
6. this type of carburetor has two kinds of plunger. The design of the plastic plunger in the "medium" shape is poor, and the base needs to be modified to reduce the drop point and improve the reaction performance of the carburetor, this facilitates fuel saving. The specific method is to cut off the convex side of the lower seat of the plunger, which can usually reduce the Plunger by 2mm and improve the starting performance of the carburetor. (After the plunger is changed, the main oil needle must be adjusted accordingly ~~~~)
7. You can try to Polish and make the main oil needle on your own for the best fuel-saving scooter. The main oil needle material can use copper electrode, the processing and polishing equipment can use ordinary drill. It is usually to first use a knife to archive the copper electrode, and then clip it to the drill, and use the speed file and coarse sandpaper for polishing. Before polishing, you must first measure the old oil needle, design a new oil needle, then polish and measure, and gradually polish the new main oil needle in place. Finally, it is to process the five channels of groove on the head of the main oil needle, or to use a drill, and to scrape the ring trough out with a scraper made of a small saw blade.
8. About the new carburetor: the Plunger Type Carburetor used for Scooter is currently available. It is a flip version that imitates the TH90 and GC125 Plunger Type Carburetor at a price of about $120. The advantage of Plunger Type Carburetor is simple structure, easy adjustment, stable operation, low price, used on Scooter, Idle Fuel consumption can be adjusted to six of the vacuum membrane carburetor. But the fatal drawback is that the accelerator cannot be quickly screwed, otherwise it will lose the negative pressure = poor oil flameout; people who use habits do not matter, only when riding cars; just those who are used to scooter, it is usually difficult to adapt to the characteristics of the plunger type carburetor.
[According to the merchant's reaction, it is difficult to start the Plunger Type Carburetor in the north. Therefore, when developing the new scooter carburetor made in China, we should pay special attention to the cold machine startup problem, A new secondary atomization structure was created for this experiment. At present, the first generation of the Plunger Type Carburetor Based on TH90 has passed the cold start-up and daily use phase of minus 15 degrees. However, the plastic float is too small and will be a hidden danger in the future, I don't want to continue. At present, we are studying the second generation. Compared with the old diesel carburetor, we have made N more improvements to reduce production costs. The risks are quite high. Now, I dare not say anything. The design of the Third Generation is ideal, and its structure is close to that of EFI in theory. However, it is not yet possible to make a promise to the moderators. In case the boss thinks that the cost is too high to be put into production, I cannot do it. ] (If you can complete the carburetor stall in this year, the scooter will be basically completed. Unless it is a shift-type engine or an electric jet for the carburetor, it will be on the scooter issue, generally, there will be no greater improvement .)
　　　
7. Throat Oil System for fuel-saving projects: (special fuel-saving and environmental protection content .)
The throat Oil System is an unknown thing for the 4chong scooter. It is one of the most important research achievements of this lightweight version on the fuel-saving problem of the scooter. Its fuel-saving principle is very simple: it is to use the oil vapor used to store container throughput to form a strong vortex flow in the throat tube, strengthen the effect of air on oil mist erosion and agitation, and accelerate gasoline volatilization in the throat tube, avoid gasoline entering the cylinder as a dropper. The effect of adding the total volume of the throat tube in the storage container is: Make the gasoline drops in the fog several times to stay in the throat tube outside the cylinder, and then enter the cylinder after being washed by the cyclone eddy current, the spark plugs are easy to ignition, and the combustion effect of oil and gas is better. The fuel-saving effect is remarkable, the engine runs smoothly much, the cold start performance is greatly improved, and the lubrication layer of the cylinder wall is easy to maintain. In the fuel-saving state, the engine power increases, but the sewage can be reduced.
Although there are many other methods for the throat tube oil system, it is not easy to implement a better fuel-saving solution than the storage container + Eddy Current throat tube for the scooter of the short throat tube. In addition, some fuel-saving schemes studied in the past have a slight impact on the engine power. This combination is an excellent solution that both saves fuel and improves power, so it is made public here. At present, this oil system is composed of two parts: one is to add the steam inlet pipe of the vortex nozzle, and the other is the storage container of the vortex pipe. For the current scooter, the vortex pipe is to add a vortex nozzle at the bottom left of the original car pipe. The Vortex storage container is a tightly closed cylindrical vacuum tank, which combines the two, the quality of oil and steam can be improved a lot before entering the cylinder.
I have posted many posts about this oil refining system in this simple version. In the past three years, thousands of riders have been using it. The effect depends on the vehicle conditions and the adjustment level of the carburetor, generally, it has a Fuel Saving Effect of dozens of % and a Startup Performance of less than 15 degrees. If you try it yourself, pay attention to the location and angle of the steam nozzle on the throat tube and storage container. Sometimes a slight error will lead to a great difference in the effect of the fuel. In general, the size of the tunqi aperture is related to the volume of the storage container. If the volume of the storage container is large or the aperture of the gas nozzle is small, the effect of steam blowing is stronger, but the gas Throttling is slower. If the container volume is small or the nozzle aperture is too large, the effect of blowing and easing the engine speed is smaller. You can choose the focus based on your own vehicle conditions and needs.
　　　
VIII. Heating Air Intake System for fuel-saving projects: (special fuel-saving and environmental protection content)
According to some fuel-saving experiments a decade ago, the method of heating the air intake is very effective for engine fuel-saving. Especially when the temperature in the winter environment is reduced, the hot air casing is added before the air filter inlet, let the engine suck in the hot air flowing out after the heat dissipation through the cylinder, so that the vehicle in the cold winter can also be close to the warm spring as the economic fuel consumption rate. This method has been used in erchong locomotive in the past, and the fuel saving effect in winter is more than two. Recently, in the fuel saving experiment of sichong scooter, the fuel saving effect of this kind of practice is also very obvious. But at present, the domestic pedal light friction design does not have these considerations, the engine cockpit space is very small, it is a little difficult to place the intake hot gas tank.
If you want to implement this method on the pedal light friction, you can easily obtain a large amount of hot air discharged from the engine after heat dissipation by using the open-hole intubation method in the engine hood, but note that: the hot air from the engine heat dissipation carries a little wind pressure, which can inhibit the main oil of the carburetor. Direct access will cause the engine speed to fail. This experiment was done by someone who thought it could boost power. The result is different from the theory of carburetor, breaking the naive fantasy that simply adding air pressure to the front of carburetor and air filter can improve engine power. (Some people have applied for a patent for this fantasy that has not been verified by experiments, and they are also believed to be ----)
According to the recommendations of this version, the specific method is to add a large plastic jar before the air filter inlet pipe import, the hot air outlet pipe mouth is also in the large tank, but not directly facing the air filter inlet pipe mouth. The advantage of this operation is that the role of the large jar is to keep the hot air from the engine heat dissipation in the tank, so that the air intake tube can be freely inhaled. Engine Heat Dissipation gases with gasoline flavor are inhaled and burned by the engine, which is highly environmentally friendly. There is also the ventilation pipe of the engine crankcase. It is said that its sewage volume accounts for two of the total sewage volume of the four Chong engine. It should also be inserted into the large tank of the air inlet, burn the oil smell again.
In terms of theory and technology, the re-use of the engine's thermal energy and oil smell will have a great effect on fuel conservation and environmental protection. However, the engine's "Heat Engine effect" will have a greater contrast, for conventional carburetor with low self-control steam concentration, the poor oil performance of the engine in the cold machine and the oil-rich effect after the heat engine will become more obvious. This will make the engine in a very different air intake temperature in winter and summer, in the traditional Plunger Type Carburetor is equivalent to the main oil needle change two ~ The effect of three cells is not suitable for general carburetor. Therefore, although this operation is fuel-efficient and environmentally friendly, it puts forward higher requirements for the carburetor, and requires a self-controlled or manually controlled oil vapor concentration function to adapt to the greater change in the intake temperature.
This type of air temperature difference affects the concentration of oil and steam, which has been demonstrated in the fuel-saving test 10 years ago. For this reason, several manually controllable air intake resistance measures have been developed on the old YH light motorcycle ---, in this way, the steam concentration is poor before the cold machine is turned on. Although artificial wind resistance has had some gratifying oil control effects, currently, only pedal riders who use the belt automatic speed control and self-controlled oil and gas concentration are not realistic to use the manual method to control the oil and gas concentration, the use of Bimetal hot air control sheets is not very accurate and reliable. Therefore, to improve the use of this engine waste heat energy, we need to expect the future development of a sound Motorcycle Fuel Control System, based on the engine temperature, intake temperature, and each intake flow ---, to precisely supply appropriate fuel to the engine.
　　　　
9. Belt Drive System of the fuel-saving project: (the fuel-saving content is used here .)
There have been many posts on the detailed principle of belt stepless speed change in this simple version, and I will not repeat it here. According to the principle of Stepless belt speed change and the current scooter structure, there is a lot of conflict between scooter fuel saving and acceleration performance, unlike the power and efficiency of the engine, which can be played by manual shift. Even so, when the engine displacement is sufficient, there are still some measures to take advantage of fuel-saving.
1. increase the diameter of the start point of the front belt: the specific method is to make the front sleeve Car 1mm short, let the two pieces of belt surface near the point, one is to clamp the belt, so as to avoid increasing friction at the beginning, reduces the chance of belt wear. The second is to increase the starting point of the working diameter of the belt in the front tray. After changing the transmission ratio, the engine speed is reduced at various speeds, which is conducive to the engine efficiency, it also features engine protection and fuel saving. The side effect of this approach is that the idle speed consumption rate is slightly higher, and the acceleration performance and climbing performance of vehicles are slightly lower, which is more suitable for use in plain areas.
2. change to the increasing pulz: its fuel-saving principle and the above 1. the difference is: 1. it plays a role in all the engine speed segments, while increasing the speed of the pulz only changes the "Change disk" Speed of the front disk, that is, to make the engine when the speed is not high enough, increase the drive diameter of the belt on the front drive in advance. In general, this method does not affect the starting performance of the vehicle, but only the acceleration performance of the vehicle. When the size of the pulz is too heavy, the wear of the front disk increases, and the vehicle cannot be accelerated. If it is changed to the larger diameter of the slider, there is the above 1. effect, but because the sliding range is reduced, the total speed ratio is reduced.
3. change the pressure spring of the back Disk: change its function is similar to the principle of changing the weight of the puller. A proper reduction of the pressure of the back disc spring will have a fuel-saving effect, but excessive decompression, it will bring about the effect of belt slide = thermal wear and the inability to accelerate the vehicle. According to the experience of using the leather belt truck in this version for several years, if the quality of the belt tray is normal, the car owner does not need to perform special processing, and this spring will gradually become soft after annealing, reduce the back disk pressure on your own. In the process of changing this pressure disc spring, pay special attention to the following: the wire length of the spring cannot be shortened at will, the short spring with the elasticity becoming too strong after compression, when starting, the pressure of the clamping belt is not enough, and the belt is easy to slide, but at high speed, it will make the engine high speed and heavy load.
4. Pay attention to the slide in the lubricating belt Tray: this is not included in the fuel-saving project, but it is vital for the consumption rate of the scooter, which should be emphasized here by the way. As the slide of the scooter will gradually wear out, the partial layout of the disc will produce a kind of "Attach" phenomenon that ordinary people do not know, which will increase the internal resistance of the scooter drive and increase the engine burden, it causes the vehicle to suffer from insufficient power and soaring fuel consumption. This kind of sub-pathological belt can't be seen in appearance and idling, and it will only show in operation. Generally, new people cannot check it, which is very big. Adding super-viscous lubricating oil to the sleeve of the belt tray can delay the wear of the shaft sleeve and prolong the effective life of the belt tray. In terms of specific practices, the current scooter is quite troublesome; I used to create a special oil injection oblique hole on the core bar of the belt tray, and added the oil sticking from the exhaust fan; but now the structure of the scooter belt is different, the belt transmission part also has a very tight shell, even if the belt is added with oil injection holes, there is trouble to remove the shell.
5. There are some shortcomings in the ordinary Puli beads. Because the contact area of the friction is too small, it is easy to wear and deformation, or the disk fails to change due to slide. There is a kind of new design that can replace the Puli beads. It is a sliding tile structure with a large contact area. Its principle is better than the latest polygon Puli beads. It's just that this stuff is not very easy to do. Before the factory has no finished products, generally cheyou can only stare. By the way, you can try it yourself if you are interested.
　　　　
10. Ignition System of the fuel-saving project: (the main content here is the fuel-saving performance .)
As far as I know, the ignition system of some pedal-assisted vehicles is very fragile. When it gets wet, it strikes. After a long period of time, it cannot be powered on. Generally, there are four improvements:
1. archive the outer electrode end of the spark plugs into a slope to make the outer electrode have a tip Discharge effect. At the same time, pay attention to adjust the fire distance between the two electrodes to 0.6 ~ 0mm. It is not difficult to do this by yourself, because the electric spark is laid on the outside of the electrode, it is easy to ignite the oil and steam, and can improve the Startup Performance of the cold machine.
2. Change the high-pressure package to a large point to increase the fire-jumping voltage and ignition energy applied on the spark plugs. In the future, the oil vapor can be adjusted a little.
3. If you do not require high startup and idle speed performance, you can replace the ignition system of the entire vehicle with an integrated ignator like XH90 to improve the waterproof anti-moisture capability of the ignition system of the entire vehicle. It is worth noting that some of the original car igniters have the Automatic Angular changing function, while the XH90 integrated igniters generally do not have the angular changing function. You need to consider it yourself.
4. Change the ignition angle according to the specific conditions of the transmission ratio and displacement of the vehicle. If necessary, change the trigger convex pin on the flywheel of the magnetic motor, change the ignator to the new ignator of TB80 invented in this version. For the content of the ignition angle and the ignition angle, many posts have been posted in this simple version. You can check the content by yourself and do not repeat it here.
　　　　
11. Engine System of the fuel-saving project: (a very large topic can only be summarized here .)
The four-Chong engine is an engine with a large internal damping. It is obvious that the throttle does not change much when it is uphill or downhill, when all the throws are closed, the engine has a strong internal blocking effect. When the throttling is too urgent, drivers may feel overwhelmed, indicating that the four-rush locomotive is almost equivalent to running half of the brakes. (This is not the case for erchong locomotive .)
In the current version of the full speed/idle speed fuel consumption test, the consumption rate of each conversion of the four Chong engine does not change much, it is about. This fully demonstrates that the internal resistance of the Four-Chong engine is large, and its ventilation system consumes kinetic energy. Most of the fuel is consumed for itself, and its fuel efficiency needs to be improved. (Because of its small internal resistance, the secondary punch machine is more sensitive to the locomotive downhill. When the carburetor is modified and adjusted in place, it is usually more fuel-saving than the secondary punch locomotive .)
According to the above test data, if the internal resistance of the light motor is reduced by 1/2, the external output of the engine can be doubled, and the fuel mileage of the locomotive will be greatly increased. (It is not easy to develop a low internal resistance ventilation system on the four-Chong engine, so this version has always been optimistic about the two-Chong engine .) Based on the research in ZJ in, it was found that the camshaft of the four Chong machine is very important. If it is polished by itself, the operation resistance can be greatly reduced and the engine output efficiency can be greatly improved.
The earliest is in the TS-1 small bending beam mounted car on the oil-saving camshaft test, the results will increase the fuel consumption from 80 KM/L to 120 KM/L; because I have no scooter, so it was not until that I had the opportunity to conduct an experiment on the factory scooter. after deducting the transmission loss of the belt, the fuel-saving camshaft still had a significant fuel-saving effect and reduced the noise of the engine. This version has posted a special post on How to polish the camshaft.
Generally, it is difficult for riders to change the engine. They can only use high-quality lubricants to reduce the internal resistance and power loss of the engine. Concerning the quality and performance of lubricating oil, it seems to be related to the manufacturer's brand and specifications. It is usually difficult to conduct private inspection based on experience. The questions about lubricants can be modified by yourself. This version is not of interest and has little experience.
　　　　
12. fuel-saving project tires: (fuel-saving, but safety is more important .)
Motorcycle tires also have a great impact on fuel consumption. In general, insufficient inflation or more people, or increase the size of the tires, often more than two fuel consumption performance. If the tires are rough or the pattern is thick, the vehicle will consume more oil. In general, the large circle of fine tires will certainly be more fuel-efficient, but the selection of tires is related to the overall safety of people and vehicles. In terms of fuel-saving, the fuel-saving problem is of course a security issue. A good practice is to increase the diameter of the tire to take into account the brake performance and driving effect. Unfortunately, the scooter has a small selection range on the tire issue, so I will not talk about it here.
　　　　
With regard to the above improvements, I have made a detailed introduction to more than N special posts in this light Modi edition. Basically, they are some practices that have been repeatedly tested and verified for many years. Here I just want to summarize them. Scooter is a type of model with incomplete structure design, inconvenient maintenance, but easy to get faulty. Even if it is done in one place, maybe there are other problems in another place; therefore, in the past few years, it is more effort-consuming than fuel-saving to maintain no faults. Because the belt transmission system is easy to wear and tear, even if it is all done well, it will not be long, so the feeling of scooter is always very tired.
Different people have different understandings of the motorcycle principle, and their technical skills vary greatly. The improvement degree of the locomotive is also very different from the efficiency of fuel-saving. Motorcycle Technology requires on-demand access and reasonable matching. Different people have different requirements for Moche, and various competitions and fashion trends are also changing. Various innovative methods and motorcycle technologies of this version have been independently researched by many departments. Every year, there are new innovations and unconventional ideas, which are inevitable in conflict with the classic practices of traditional public opinion. Therefore, this post is only for reference by DIY riders in this simple version, and does not need to be regarded as a classic standard to care about the level of the traditional concept of the outside world...