F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
F02M 69/52 (2006.01) F02B 43/00 (2006.01) F02M 67/06 (2006.01) F02M 67/14 (2006.01) F02M 69/16 (2006.01)
Patent
CA 2538984
For gaseous fuels that are injected directly into a combustion chamber the mass flow rate through an injection valve can be influenced by changes in the in-cylinder pressure. A method and apparatus are provided for accurately metering a gaseous into a combustion chamber of an internal combustion engine. The method comprises inputting a fueling command; determining from said fueling command a baseline pulse width of an injection event, based upon a baseline pressure differential across a fuel injection valve; estimating the difference between said baseline pressure differential and an actual pressure differential; calculating a corrected pulse width by applying at least one correction factor to said baseline pulse width, wherein said correction factor is a function of the estimated difference between said baseline pressure differential and said actual pressure differential.
Ancimer Richard J.
Batenburg Greg
Dunn Mark Edward
Goudie Dale
Gowling Lafleur Henderson Llp
Westport Power Inc.
Westport Research Inc.
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