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Preliminary communication

Fuel mass flow variation in direct injection diesel engine – influence on the change of the main engine operating parameters

Vedran Mrzljak orcid id ; Faculty of Engineering, University of Rijeka, Rijeka, Croatia
Božica Žarković ; Faculty of Engineering, University of Rijeka, Rijeka, Croatia
Igor Poljak orcid id ; Kostrena, Croatia

Full text: english pdf 2.590 Kb

page 119-127

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A change in the main operating parameters of a high speed turbocharged direct injection diesel engine MAN D0826 LOH15 during the fuel mass flow variation has been analyzed. On the basis of two measurement sets, on two different engine rotational speeds, performed with standard diesel fuel, several operating parameters have been calculated: engine torque, effective power, excess air ratio, specific effective fuel consumption and heat released per engine process. The calculated parameters are presented for a wide engine operating range. In addition to measurement sets, several important parameters have been measured. Additional measured parameters have been lubrication oil temperature and exhaust gas temperature before and after the turbocharger turbine. The presented engine operating parameters allow deep insight into the analyzed diesel engine process.


Diesel engine, Fuel mass flow variation, Experimental analysis, Operating parameters

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