Patent ID: 9605617
Date: 2017-03-28
CPC Classifications: F02D

Claim:
1. A method of controlling a load during misfire of an engine for detecting misfire of a cylinder of an engine including a plurality of cylinders and controlling an operation output of the engine on the basis of a detection result of the misfire, the method comprising: a first step of calculating additional stress on a crank shaft on the basis of crank-shaft torsional vibration evaluation calculation when the misfire is detected; a second step of obtaining an output limit rate for the engine corresponding to the calculated additional stress on the crank shaft; and a third step of controlling the operation output of the engine on the basis of the output limit rate, wherein the second step includes determining whether the calculated additional stress on the crank shaft is less than an allowable stress with respect to the crank shaft, and performing a control for reducing the operation output of the engine by a predetermined amount and returning to the first step to execute the first step repeatedly if the calculated additional stress is greater than the allowable stress or calculating the additional stress on the crank shaft to obtain the output limit rate if it is determined that the calculated additional stress on the crank shaft is less than the allowable stress with respect to the crank shaft.