What is the normal data range for ignition advance angle?
1 Answers
The normal range for ignition advance angle is between 6 to 12 degrees. The ignition advance angle refers to the crankshaft rotation angle from the moment the spark plug fires (before the engine piston reaches the compression top dead center) until the piston actually reaches the compression top dead center. The ignition advance angle system consists of three components: microcomputer, various sensors, and ignition actuator. Factors affecting engine ignition advance angle include: 1. Engine speed; 2. Load; 3. Octane number; 4. Combustion chamber shape; 5. Combustion chamber temperature; 6. Air-fuel ratio; 7. Atmospheric pressure; 8. Coolant temperature.