Why can the engine speed remain high after releasing the throttle when driving at high speed? Don't turn off the throttle at this time, there can't be enough air to keep it high.

When the engine is running at high speed with load, the engine speed will not decrease immediately, but will decrease with the decrease of vehicle speed. This is because the high-speed inertia of the car will "take away" the engine rotation in turn, and the speed is directly proportional to the real-time speed.

In today's cars, the engine speed will drop after the throttle is released. The reason is that the engine management system thinks that the driver has the intention to reduce the speed, so it will reduce fuel injection, even when the speed is high, it will not inject fuel at all, so that the output power of the engine is lower than the driving resistance power, and the speed will be reduced.

Matters needing attention

1, vehicle inspection before driving

Before driving, the driver should conduct a comprehensive inspection of the vehicle, focusing on various oils, tires, braking systems, etc. If there is a shortage of oil, it should be replenished to a reasonable position; The tire should be carefully inspected to remove foreign objects in the tire joints.

2. Adjust the rearview mirror

When the rearview mirror is in the best position, the driver can better observe the situation beside and behind the car, and pay attention to the subtle differences between the adjustment methods of the left and right rearview mirrors.

Step 3 Adjust the seat

Correct sitting posture helps drivers to relieve fatigue during long-distance and high-speed driving, and it will not affect the handling of emergency situations because of sitting posture.