COMBUSTION-NOISE CONTROLLING METHOD FOR DIESEL ENGINE

摘要

A combustion-noise controlling method for a diesel engine includes: setting a target value for a vibration peak using one or more control variables needed for driving a vehicle, diagnosing a combustion noise of the engine based on the target value, and checking whether the diagnostic value for the combustion noise is higher than a reference value previously input to a controller. Combustion is performed depending on a result of the checking. A vibration signal of the engine is measured, and a vibration peak value depending on the measured vibration signal is obtained. A feedback control step includes obtaining a correction value by performing an arithmetic operation using the target value and the vibration peak value. A pilot fuel quantity is controlled according to the correction value.

主权项

1. A combustion-noise controlling method for a diesel engine, comprising:
a target value setting step of setting a target value for a vibration peak using, as input, one or more control variables needed for driving a vehicle; a diagnosing step of diagnosing a combustion noise of the engine based on the target value and generating a diagnostic value for the diagnosed combustion noise; a comparing step of checking whether the diagnostic value for the diagnosed combustion noise is higher than a reference value that has been previously input to a controller; a combustion step of performing a combustion process depending on a result of the comparing step; a vibration peak obtaining step of measuring a vibration signal of the engine and obtaining a vibration peak value based on the measured vibration signal; and a feedback control step of obtaining a correction value by performing an arithmetic operation using the target value and the vibration peak value, and controlling a pilot fuel quantity according to the correction value.