The Research Progress of Particulate Emissions from Vehicles with Gasoline Direct Injection Engines

Abstract:

The objective of this research is to introduce the main gasoline direct injection vehicle particulate emissions characteristics researches in the world. Many investigations of particulate sizing and number count from gasoline direct injection (GDI) vehicles at different driving cycles were performed. Lots of particulate emissions are measured for FTP-75, NEDC, HWTET, SC03, and US06 cycles and these cycles can reflect different aspects of the particulate emissions. In some papers, both engine-out and tailpipe emissions were measured. Some investigation showed high sensitivity of the particulate number or size distribution to changes with the engine control parameters including A/F, ignition timing, EOI and so on.On the whole, the particulate number during different Driving Cycle is shown along with further analysis of the transient particulate emissions. The cold start process obviously affects particulate formation. Even beyond cold start, the particulate number emissions decrease as the test progresses. The results coming from the particulate measurement system sampling directly from the exhaust showed very rapid increases in particulate emissions during engine transients.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2351-2354
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2351
• Online since: August 2013
• Authors: Guang Yang Liu*, Yu Liu, Jian Xi Pang, Yan Qin
• Keywords: Driving Cycles, GDI Engine, Particulate Emissions

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