This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Effect of Injection Strategy on Particulate Matter Formation in CRDI Engines
Technical Paper
2012-08-0350
Sector:
Language:
English
Abstract
This study examined the engine performance and the emission characteristics of particulate matter according to the fuel injection strategy under high speed diesel engine combustion conditions. In this study, combustion analysis of the single-cylinder engine and the engine dynamometer experiment of the multi-cylinder engines were conducted. To determine the optimum injection timing, the test condition standards, such as the engine speed, load and fuel injection quantities, were fixed. Subsequently, the injection timing was controlled and repeated to reset the main injection and pilot injection periodically. The number of nanoparticles tended to increase with increasing engine load factor and the nano-particle-number concentration increased up to 10 times depending on the changes in injection timing. The weight of PM emissions was increased at low load, and the PM emissions increased with increasing number of pilot injections.