Effects of Delay Period

Effects of Delay Period Points : Effects of Delay Period, Diesel Knocking, problems in internal combustion engines, ic, engine, auto diesel The delay period, usually measured in degrees of crank angle or in seconds is taken as the period between the start of injection and the point at which the cylinder pressure start to rise above the compression pressure.

Increased injection timing give diesel fuel more time to ignite and burn properly.

Effects of delay period or ignition lag is time it takes diesel oil to heat up, vaporize, and begin to burn. It is the time lapse between initial fuel injection and actual ignition (burning).

Ignition lag is a major controlling factor of diesel knock. If time lag is too long, then a large amount of fuel can ignites produces a louder than normal knock, A high octane fuel, with short lag time, reduces, the chances of diesel knock.

Diesel knock occurs when too much fuel ignites at one time producing louder than normal knocking noise. Excessive diesel knock can reduce engine power, fuel economy, and engine life. Figure below shown lie basic phases of diesel knock study this illustration.