Patent ID: 9127608
Filing Date: 2015-09-08
Classification: F02D,F02M

Abstract:
1. A cetane number estimation device that executes fuel injection by a predetermined injection amount to estimate a cetane number of fuel to be combusted in a diesel engine, and estimates the cetane number based on a first index value of output torque of the diesel engine that is generated by execution of the fuel injection, wherein the device is configured to detect an index value of an amount of heat generated by combustion of the fuel by executing fuel injection by a predetermined injection amount to detect the amount of generated heat of the fuel, computing a second index value of output torque of the diesel engine that is generated by execution of the fuel injection, and setting the computed second index value as the index value of the amount of generated heat, and when estimating the cetane number based on the first index value, estimate the cetane number by referring to the index value of the amount of generated heat in addition to the first index value.