4 ms·
Is the engine stopped while the car is moving? That would save even more fuel compared to only stopping the engine while stationary. A further improvement would
by nawitus 11y ago
Is the engine stopped while the car is moving? That would save even more fuel compared to only stopping the engine while stationary. A further improvement would involve starting the engine without using the starter motor when possible.
I could do all that with my old car "manually", but I only tried it a few times.
- smileysteve 11y agoWith most fuel injected engines, the injectors turn 'off' on deceleration until ~1000 rpm where they kick back on.
- nawitus 11y agoDo you mean they turn off while rolling in neutral or with the gear in? Sure, the injectors turn off when you're decelerating in gear, but that's true even if the car doesn't have a start-stop system. However, I was talking about the case of decelerating in neutral with a car having a start-stop-type system. Rolling in neutral is always more efficient if the fuel is also cut off, but often even with the car running on idle.