2007-01-19 22:52:18 · 2 answers · asked by MC 2 in Cars & Transportation ➔ Other - Cars & Transportation
Because the added force on the accelerator opens a valve in the engine's induction that allows more air in, which also causes more fuel to enter. When the fuel burns and causes rapid expansion of the nitrogen in the air, it drives the pistons faster, which causes the engine to rotate faster, which drives …
Happy Motoring
2007-01-20 02:22:43 · answer #1 · answered by Ironhand 6 · 0⤊ 0⤋
Ironhand is certainly correct. Gasoline and alcohol-fueled engine speed is controlled by a throttle (the valve regulating the amount of incoming air). Diesel engines (compression ignition) have a different mechanism for controlling engine speed. The intake system is always totally open. Engine speed is regulated by the amount, timing and speed of fuel injected into the combustion chamber.
2007-01-20 06:39:36 · answer #2 · answered by db79300 4 · 0⤊ 0⤋