Why is coasting in neutral not allowed?
1 Answers
Traffic safety laws stipulate that coasting in neutral is prohibited. Here are the specific impacts of coasting in neutral on a vehicle: Increased fuel consumption: Many vehicle models are equipped with electronically controlled fuel injection systems. When the car is shifted into neutral, the ECU defaults to the car being in an idle state, thereby increasing fuel injection to maintain idle speed. Generation of jerking sensation: When the vehicle coasts in neutral to a certain speed and the neutral is disengaged to shift into the corresponding gear, a noticeable jerking sensation occurs. Additionally, the sudden output of power may damage the gear teeth in the transmission. Reduced braking effectiveness: Once shifted into neutral, the drive wheels lose driving force, and the connection between the engine and the drive wheels is severed. The engine can no longer provide resistance to the drive wheels. In case of an emergency, the vehicle's entire braking force must be provided by the brakes. However, since brakes can only provide limited braking force, the braking distance increases, raising the likelihood of a major accident. Impact on engine lifespan: During idle operation, the oil pump runs at a low speed, reducing the oil supply. Over time, the engine's cooling, cleaning, lubrication, and sealing functions will deteriorate. Frequent coasting in neutral can accelerate engine wear.
