Detection method for start of combustion using in-cylinder pressure of diesel engine

The invention combustion relates to ignition timing detecting method for a diesel engine using the internal pressure, specifically, the ignition timing necessary to control the combustion by using the difference of the combustion pressure and the motoring pressure of the diesel engine efficiently (SOC: Start Of It relates to a method of estimating Combustion). Features of the invention for this purpose is different from the motoring pressure inside the combustion chamber pressure detecting a DP value defined by (DP Pressure Difference) and; Detecting a crank angle (CA Step of the experiment of measuring the SOC and the CA expression To be the a point, and each detected delay to simply and accurately detect an ignition timing to a point defined by a simple function of the engine rotational speed used. Chamber pressure, the diesel engine, the ignition timing (SOC: Start Of Combustion), the detection method