| 摘要 |
#CMT# #/CMT# Method involves determining integral heating curve of cylinder pressure characteristics measured with internal combustion engine equipped with cylinder pressure sensors. From integral heating curve, relative position of 5 percent value of maximum of heating curve (Ai5%) is determined. #CMT# : #/CMT# The relative position of 5 percent value of maximum of heating curve indicates the intermediate pressure and height of plateau in integrals of heating curve between the combustion of pre-injection (VE) and the combustion of the main injection (HE). In each case, the difference between this value and the motor control device deposited target values for the relative position of 5 percent value of the maximum of heating curve, the indicated intermediate pressure and the height of the plateau in the integral heating curve between the combustion of the pre-injection and the combustion of the main injection is determined. #CMT#USE : #/CMT# For leakage test of injection system of internal combustion engine. #CMT#ADVANTAGE : #/CMT# Ensures detection of small leakage amounts, which occur during the working of the internal combustion engine. Ensures less expenditure concerning the instrument technique and costs. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows the graphical representation of the heating rate over the crank angle. Ai5% : Relative position of 5 percent value of maximum of heating curve HE : Main injection QHmin : Relative position of the minimum of the heating curve VE : Pre-injection. |
