What is the ignition timing advance angle for a car?

[DiMariana]

Car ignition timing advance angle varies depending on engine conditions: 1. The ignition advance angle for gasoline engines is approximately 10 degrees; 2. The ignition advance angle for diesel engines is around 15 degrees. The ignition advance angle refers to the crankshaft rotation angle from the moment the spark jumps between the spark plug electrodes until the piston reaches top dead center. The effects of excessive ignition timing advance are: 1. Combustion occurs entirely during the compression stroke, causing a sharp rise in cylinder pressure; 2. High pressure is reached before the piston reaches top dead center, creating significant resistance for the ascending piston; 3. Engine power decreases, leading to knocking.