This is the period between the start of injection and the onset of combustion. During this period, the fuel is vaporizing, mixing with air, and reaching a high enough temperature to ignite. The length of the ignition delay depends on several factors, including the fuel injection pressure, the temperature of the air in the cylinder, and the fuel-air ratio.
2. Rapid Combustion
Once the fuel-air mixture has reached a high enough temperature, it will autoignite. This rapid combustion generates a lot of heat and pressure, which drives the piston down and generates power.
3. Late Burn
After the main combustion event, there is still some fuel left in the cylinder that continues to burn. This late burn is a slower and less intense combustion process, but it contributes to the overall power output of the engine.
