F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
F02B 43/12 (2006.01) F02B 7/08 (2006.01) F02B 23/06 (2006.01) F02D 19/02 (2006.01) F02D 19/10 (2006.01) F02D 35/02 (2006.01) F02B 1/12 (2006.01)
Patent
CA 2444163
A method and apparatus is disclosed for controlling to a target heat release rate (HRR) using a HRR control lever, namely, pilot fuel timing and/or pilot fuel quantity, used in a gaseous-fuelled compression ignition internal combustion engine. The mechanism to control HRR to a target HRR provides improved performance and emissions for such an engine. A target HRR is determined for a cycle of an engine. A HRR control lever is then used to adjust to the target HRR in consideration of combustion conditions in the engine and the difference between the target HRR and Cycle HRR predicted for the cycle by reference to, by way of example, a derived HRR trace from a previous cycle, a pressure trace, a measured property of the exhaust gas directly determined or mapped values provided during calibration allowing for adjustment to a target HRR for the engine. The mapped values can be cross-referenced to the combustion conditions in the engine.
Ancimer Richard
Frazier Tim
Munshi Sandeep
Tanin Konstantin V.
Oyen Wiggs Green & Mutala Llp
Westport Power Inc.
Westport Research Inc.
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