Abstract The demand for reduced pollutant emissions has motivated various technological advances in passenger car diesel engines. This paper presents a study comparing two fuel injection systems and analyzing their combustion noise and pollutant emissions. The abilities of different injection strategies to meet strict regulations were evaluated. The difficult task of maintaining a constant specific fuel consumption while trying to reduce pollutant emissions was the aim of this study. The engine being tested was a 0.287-liter single-cylinder engine equipped with a common-rail injection system. A solenoid and a piezoelectric injector were tested in the engine. The engine was operated under low load conditions using two injection events, high EGR rates, no swirl, three injection pressures and eight different dwell times. Four injector nozzles with approximately the same fuel injection rate were tested using the solenoid injection system (10 and 12 orifice configuration) and piezoelectric system (6 and 12 orifice design). The injection system had a significant influence on pollutant emissions and combustion noise. The piezoelectric injector presented the best characteristics for future studies since it allows for shorter injection durations and greater precision, which means smaller fuel mass deliveries with faster responses.
Comparison of two injection systems in an HSDI diesel engine using split injection and different injector nozzles
International Journal of Automotive Technology ; 11 , 2 ; 139-146
01.04.2010
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
British Library Online Contents | 2010
|The capability of forming injection rates for HSDI diesel engines with unit injector systems
Kraftfahrwesen | 1988
|The Capability Of Forming Injection Rates For HSDI Diesel Engines With Unit Injector Systems
SAE Technical Papers | 1988
|Optimizing the multiple injection settings on an HSDI diesel engine
British Library Conference Proceedings
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