It's okay for a short time, but after a long time, the cleaning, lubrication, sealing and cooling functions of the engine lubrication system will be greatly reduced. Driving in neutral for many years will definitely affect the life of the engine. If you put it in neutral when taxiing, the transmission gear will be separated from the power input shaft, and the wheel will only rotate with a small part of the transmission gear.
Therefore, it is not necessary to carry the entire transmission or heavy vehicle. The rotating speed and inertia consumption of the machine are much slower than that of gear sliding, so it can naturally slide further. For a very common example, if there is a traffic light ahead, once it is in neutral, the vehicle can slide in front of the traffic light by inertia, and only the brakes are left at this time.
If the gear is engaged, the sliding distance of the gear can't reach neutral, and finally you have to refuel. In the past, neutral sliding was a patent for manual transmission, but there may be a hidden danger of insufficient oil supply pressure when automatic transmission slides in neutral (the engine crankshaft drives the circulating pump), but now many automatic transmissions use electronic pumps.
Thereby fundamentally avoiding the hidden dangers of neutral sliding and insufficient oil pressure. Therefore, many OEMs directly write the neutral sliding logic into ECO mode, release the throttle and automatically switch to neutral. BBA was established before 20 16, and everyone knows that the ECO mode is to obtain lower energy consumption.
Writing neutral taxiing in ECO mode is not enough to prove that neutral taxiing saves fuel! Due to the imperfect lubrication design of the early automatic transmission, it is really necessary for the engine to maintain a high speed to drive the oil pump in order to obtain sufficient oil pressure. For modern automatic transmission, whether it is at, CVT or dual clutch.
The neutral condition is considered in the design. Many transmissions are designed with independent lubricating oil pumps, which do not need neutral, which will lead to lubrication problems. When the gearbox is in neutral, the load is very small, and even if the engine runs at low speed, it will not generate too much heat, so there is no heat dissipation problem.
I don't know if neutral is fuel efficient. I only know that it is feasible to slow down before the traffic lights, and there is never any danger. On the other hand, when I forgot to empty the gear first, I found that when I needed to step on the brake too quickly, I was easily hit by the car behind me, and the reaction of the car behind me was avoided in time.
However, when some drivers are waiting for traffic lights, they only empty the stop, do not pull the hand brake, and do not step on the brake, resulting in a rear-end collision. However, when taxiing in neutral, the power transmission between the engine and the transmission is interrupted, and the vehicle can only slow down by braking force instead of engine drag force.
The condition of the vehicle will inevitably weaken the braking effect of the vehicle and increase the wear of the brake pads of the vehicle. Novices still don't recommend sliding in neutral, especially for safety reasons, because if the car is in neutral, it can only move forward by inertia, and if it needs to brake in an emergency, it can only stop by braking force.
At this time, when the engine speed is low, vacuum will be generated, and the braking force is small and the braking distance is long. Most importantly, it is very dangerous to slide in neutral once the fire is turned off. Sliding in neutral is not a good driving habit. Although it can save fuel, there are certain security risks.
If you encounter climbing and slipping in neutral for a long time, it is easy to get stuck when turning, which will also reduce the service life of brake pads and brake pads, so try not to slip in neutral. What do you think of this matter? You can comment enthusiastically and express your views.
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