手动档空档滑行有利无弊（Manual gear neutral taxi advantages and disadvantages）

手动档空档滑行有利无弊（Manual gear neutral taxi advantages and disadvantages） 手动档空档滑行有利无弊(Manual gear neutral taxi advantages and disadvantages) Manual gear "neutral glide" advantages, no disadvantages, fuel-efficient 20% can reach. I saw a neutral taxi discussion today! Wonderful! I hope this discussion! Can help ya ya door! First, neutral taxi is safe Reporter: you are an active advocate of sliding, and there are dozens of years of driving experience, and in my Daily Times published the article, to our readers a great help, but so far, this issue is still controversial. Could you please elaborate on this? Yu Ming: yes. Two years ago, although I discussed the problem of fuel economy and safety of neutral sliding, it was significant to discuss the problem further in the days of shortage of petroleum resources and traffic jam. From your survey results (see the 15 Edition), the majority are for approval, and the opponents are mainly worried about insecurity. By talking about it, I think they will understand the meaning of safe driving from many directions. Reporter: before I interviewed you, I did some random sampling of some car owners and found that it seemed reasonable to object to what the neutral skater said. They are the main view is that sliding is not safe, namely free sliding, braking system and power system is cut off, when the time comes, can only rely on the braking system brake to brake, no power brake, easy to cause the brake attenuation, accelerate the damage, but also prone to poor braking and vehicle sideslip. Moreover, in this case, the brake force is more intense, the braking force is worse, the more serious slip. Do you have any explanation for that? In the Ming Dynasty: first clear: 1, in the technology of automotive industry has experienced more than 100 years of car today, any regular production and normal performance of the braking system, it is safe and reliable, the braking effect is assured. 2. The premise of vehicle brake safety design is that it does not contain brake power of the engine. Vehicle braking performance tests are done in neutral. Think carefully. Every driver has to step on the clutch when he stops the car. That's the reason for the gap. Do you feel unsafe? Aren't you also doing neutral and neutral braking? Under normal driving conditions and correct operation, the service life of the brake system should be normal. Conversely, damage to the engine and transmission can be accelerated by the engine as a braking force. Driving on the road with the appropriate special power of engine can improve security, but this is a small probability event, we discuss the problem in normal driving conditions (including road conditions, weather conditions, load condition, etc.). We say the gap is safe and we are more emphasis on the driving style than the car technology. See my article, "neutral glide: fuel efficient and safe". Reporter: neutral taxi, the engine is idle operation, incomplete combustion, in the long run, will form carbon deposition. Is that so? In the Ming Dynasty: engine causes carbon deposition is various, the main factor is the oil cylinder clearance, ignition timing, distribution channel, oil condition, combustion temperature, adjusting the engine does not have good operation of incomplete combustion phenomenon in the idle state. Conversely， Idle conditions on the engine's favorable side is: such as high temperature, high speed to prevent air resistance; cold when the idle speed, temperature, car, etc.. In neutral idle condition, engine load is minimum, mechanical wear will only be reduced. Reporter: some people say that the manual car can barely make neutral glide, while in the equipment of automatic transmission car in neutral glide, especially high-speed space-time gear sliding off is absolutely not allowed, to prohibit automatic transmission vehicles by D gear onto the N gear sliding, because the working principle of the automatic gearbox is by hydraulic drive unit (friction) joint in power transmission, if the slide gap cannot be established, normal pressure, friction will appear dry grinding, thus seriously affects the life of automatic transmission. Yu Ming: I basically agree with the above statement. What he said should be changed to "neutral sliding"". "Neutral stall taxi" is not what we advocate. Reporter: the car in what state began to pick the file is the best? Ming: the question has been clearly stated in my article. There is no fixed number, depending on the road condition and the type of vehicle. Generally speaking, in urban areas, according to the driver's line of sight to master the safety distance to control the speed of the file, the safety distance is long, the speed is high, otherwise it is low. The general car is below 60km / h, at this time the engine speed is below 1800r / min. In suburban areas, the parameters are improved, such as 120km / h and 3000r / min. Skilled drivers are able to master the timing of the gear. The main thing that drivers lack in this respect is not technology, but ideas. Two, fuel-efficient is universal, sure Reporter: some people say that the carburetor vehicle coasting in neutral fuel economy is certain, but it is not fuel-efficient EFI car coasting in neutral, but if the gap glide is not only dangerous, but also for the maintenance of idle and extra consumption a lot of fuel. Is this statement correct? Yu Ming: as far as I know, EFI computers do not control fuel injection in full accordance with the speed. It is based on load, acceleration, etc.. For example, when the vehicle is low speed, speed is faster, more fuel injection. From the mechanical principle, at this time the injection can not be zero, otherwise the compression resistance of the engine is too large, will make the vehicle suddenly drop speed, easy to make rear ended. It will also cause wear and tear of vehicles. For example, in a car with an immediate fuel consumption on the car - Senna, you can see the belt sliding fuel consumption is not zero! Also, when the gap between the sliding time and distance is far greater than the file sliding, even if the computer will be injected into the neutral, with gear sliding fuel consumption, both the cumulative fuel consumption is certainly not the same. Reporter: some people say that driving in the city, if you often use neutral taxiway, you can save 20% of the fuel? Yu Ming: the answer is yes, 20% of the fuel consumption can be achieved. Driving skills are very important in this area. Make full use of coasting and vehicle inertia. We've seen a lot of articles on what fuel-efficient cars, the actual data gap is very large, and ultimately can not explain the problem, this gap is different driving methods, rather than the difference between the car. In my article, the analysis of "fuel economy" is as follows: 1, the general urban road, more than 400 meters, there is no obstacle road is very small, In the first two hundred meters of the car smoothly accelerated to 40-60km/h can be moved to the right foot sliding, natural brake pedal (advance). At this time the engine speed from 2000 rpm / about to 800 / min (idle), generally taxi to the traffic lights (junctions) 50 meters before, can still have more than 20km/h speed, very convenient for the back of the operation. This makes almost half of the mileage not refueling, fuel consumption, of course, less. 2, bad road condition or traffic jam queue, should also try to make good use of the amount ahead of time, control the speed, multi use neutral taxi. It's usually slippery, and the car in front is moving. This section of the engine speed can also be maintained at 1200 rpm / min, but also save 1/5 of oil. 3, on the highway, the speed increased to 120km/h (engine speed of 3000 rpm / min), you can slide in neutral, sliding to 90km/h, and then accelerated. On the car, because the speed is not too high, the wind resistance is not too large, the general sliding time is 1.5 times the acceleration of time, which is about 1/2 time without refueling, although the general car fuel consumption when the vehicle speed is usually measured in 90km/h, but this driving fuel consumption will be lower than the factory index. Driving is safe and efficient. Examples are as follows: 1, "Picasso" (1.6L displacement), 4 months, with a total mileage of 12000 kilometers, of which highway and urban areas each about 6000 kilometers. Driven by the above method, the instrument shows that the accumulative average fuel consumption is 6.7l/100km, and the fuel consumption technical index is 7.0l/100km. The result of a general survey of similar vehicles is that the average fuel consumption in the urban area is (9-10) l/100km; the average fuel consumption in the expressway is (7-8) l/100km. If this calculation, the former total fuel consumption of 804 liters, the latter 1020 liters of fuel consumption, save more than 200 liters of oil (about 20%). 2, factory two months of "Santana 2000" new car (1.8L displacement), the car's fuel consumption technical index is 6.9l/100km. With the driving method above, the suburbs travel 2000 kilometers, of which half of the highway, half of the county road, the total average fuel consumption is 5.9l/100km, significantly lower than the technical indicators. Reporter: some people say that small displacement vehicles can be neutral taxi, and large displacement car neutral taxi is not fuel-efficient; some people's argument is just the opposite, saying that large displacement car neutral taxi fuel-efficient, small displacement is not fuel-efficient. In the Ming Dynasty: neutral glide should be divided fuel-efficient car size, because the engine displacement is according to the weight of the vehicle, load, power and other requirements to design, apart from the general freight cars, large displacement cars are luxury cars, special vehicles, fuel is not the main performance index, the power is often crucial so, large displacement cars are often oil tiger. Reporter: does that mean that all cars use neutral taxiway, after driving, will fuel saving it? Yu Ming: Yes, in general, it will save oil. But carburetor cars and EFI cars, as well as low-grade cars and high intelligence car fuel-efficient will vary. The former is more fuel-efficient. This is just about the technical differences in the car, if compared to the driver's level of difference, which kind of car can save more than 20%. Three, we should vigorously promote "gentleman driving"" Reporter: in the final analysis, you advocate the "neutral taxi", more is to promote a civilized driving habits. Is it, Yu Ming: yes. Some people think that the fuel economy is unsafe, I said, "fuel-efficient and safe", which is more emphasis on safety. Speaking of safety reasons for mechanical principles, and one side is driving style. I advocate a civilized driving habit, or "gentleman driving", which is an idea and a primary guarantee for safe driving. Safety is mainly embodied in three aspects: 1 when driving, not rash, not can not grab, separately, in a safe speed in full use of the inertia of the vehicle coasting in neutral. 2, when driving sight, far ahead, and pay attention to judgment, in front of everything that happened well, keep ahead. 3, once the neutral sliding, the driver's right foot is used to move from the accelerator to the brake pedal, at any time to deal with unexpected situations, never busy mistakes. People often say, "ten accidents, nine times."!" The connotation of this "fast" is urgent. "Mistakes in the busy" is also common sense. "Neutral taxi" driving concept is to solve this insecurity. Reporter: finally, please give me a brief summary of your views. Yu Ming: I advocate "neutral taxi", this way of driving, one is fuel-efficient, which is beneficial to themselves and society, but also the country attaches great importance to and care about. Two is to ensure safety, I am more optimistic about this point. The car was originally dead, some people drive to live, there is spirituality, and now the safety is not only the meaning of mechanical performance. "Sliding" advocate is a graceful impatient driving style; a "advance" attitude; a right foot in the vehicle sliding often on the brake pedal side of the driver's driving habits, the so-called gentleman, when driving keep ready. Society often says, "opportunities are for those who are prepared," which still applies here. When driving, observe, judge correctly and deal with things ahead. It must be much safer and naturally more fuel-efficient (even if it's a car that doesn't save oil). What I want to emphasize is that "neutral taxi" is just one of the good driving habits. Good driving habits are the most effective way to solve traffic jams and avoid traffic accidents. At the same time, only good habits drive the car to do "neutral glide" and "neutral glide". Four points need to be added: 1, "neutral taxi" requirements of skilled drivers, novices should not do. 2, "neutral taxi" range of application is under normal driving conditions (including road conditions, weather conditions, weather, load, etc.). Not including long and steep slope, mountainous area, complicated road, not familiar with the road. 3. Automatic parking is not allowed at the moment. It may damage the transmission. 4, the regulations do not prohibit the neutral taxi provisions, only special sections of the neutral taxi tips. Some "neutral taxi" opponents, is concerned about these four aspects, and now that the white truth, it should also be endorsed.