Automatic Correction Method of Blow-By Measurement on Diesel Engine Bench
During the development and testing stage of diesel engine,the matching performance of piston,piston ring and cyl-inder was usually evaluated by the blow-by.By studying the measurement mechanism of AVL442 blow-by meter,it was found that there was significant difference between the actual temperature and pressure and the reference ones achieved by blow-by meter measurement,which would affect the accurate measurement of blow-by to a certain extent.Automatic correction method of blow-by measurement was hence put forward.The temperature and pressure of blow-by gas were measured before passing through the meter,then blow-by correction algorithm was configured based on the LAM acquisition and formula editing of bench data acquisition system,and the automatic correction was hence conducted during the measurement of blow-by.Accord-ingly,the correlation between the bench and test equipment was improved,and the accuracy of blow-by measurement was also improved.
万方数据
维普
