F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
F02B 1/14 (2006.01) C10L 3/06 (2006.01) F02B 1/06 (2006.01) F02B 7/00 (2006.01) F02B 23/06 (2006.01) F02B 77/08 (2006.01) F02D 21/08 (2006.01) F02M 25/00 (2006.01) F02M 25/06 (2006.01) F02M 25/07 (2006.01)
Patent
CA 2442336
A method and apparatus is disclosed for adjusting pilot fuel injection timing in relation to a main fuel injection timing into a piston cylinder of an operating gaseous-fuelled direct injection internal combustion engine using high levels of EGR. A set of engine parameters are monitored which determine engine load and engine speed and an indicator of EGR concentration within the intake charge. Pilot fuel timing relative to main fuel injection timing is then adjusted according to the engine parameters. High levels of EGR are shown to be tolerated with relatively limited penalties in regards to other emissions typically found with high EGR by reducing the relative injection timing the pilot fuel as compared to main fuel injection timing.
Bushe W. Kendal
Mctaggart-Cowan Gordon P.
Munshi Sandeep
Rogak Steven N.
Oyen Wiggs Green & Mutala Llp
The University Of British Columbia
Westport Power Inc.
Westport Research Inc.
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