Which is Higher: Idling Fuel Consumption or Driving Fuel Consumption?
1 Answers
Idling fuel consumption is higher than driving fuel consumption. Here are the extended details: 1. Average Fuel Consumption: The unit of average fuel consumption is L/100km, which represents the average fuel consumption per 100 kilometers. It is a significant reference for measuring how far a car can travel after being fully fueled, indicating the fuel consumed by the car over a specified distance of 100km. Instantaneous fuel consumption, on the other hand, is measured in L/H (liters per hour), representing the fuel consumed by the car per unit of time during operation. When the car is idling in place, it clearly relies on the level of instantaneous fuel consumption. 2. Instantaneous Fuel Consumption: The instantaneous fuel consumption of a car is the ratio of the fuel injection amount per unit time to the distance traveled by the car per unit time. For electronically fuel-injected engines, the fuel supply pressure of the engine's fuel system is constant, and the amount of fuel injected depends on the injection pulse width of the fuel injector, meaning the fuel injection amount per unit time equals the injection pulse width multiplied by the idling time of the car. When the car is idling, the distance traveled per unit time approaches zero infinitely, and the fuel injection amount per unit time divided by an infinitesimal value results in higher fuel consumption the longer the idling time. This is the reason why idling fuel consumption is high when the car is stationary.
