Research Into The Influence Of Turbocharger System Leakage On The Parameters Of The External Work Of 1.9 Tdi Diesel Engine

Abstract

The article presents and analyses the comparable results of thestand tests of 1.9 TDI diesel engine. The purpose of the conductedresearch included solving a question of how losses in thecharge-air system impacted environmental and energy-economicalparameters in order to ensure the same load characteristicsof the diesel engine. The leakage factor was imitated by a holeof 3.1 mm in diameter, the size of which is possible in practice.Therefore, some significant negative changes were observed. Inall tested range of the loaded engine, a decrease of 6.7...7.8 %in charge pressure impacts an increase in greenhouse gas emissionsby 11...30 %. Fuel consumption increased by 11...14 %and difference in the deterioration of other indicators sometimesvaried compared with normal operating conditions. It was alsofound that, in a case of leakage, the electronic engine control unitinefficiently reduced the emission of the products of incompletecombustion in exhaust gases.

Keywords

• diesel engine, charge-air system, environmental parameters, energy-economical parameters.