Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2008-06-10
2009-06-02
Cronin, Stephen K. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S478000, C060S602000
Reexamination Certificate
active
07542842
ABSTRACT:
This disclosure teaches a method of controlling a direct injection internal combustion engine and predicting the behavior of a direct injection internal combustion engine. An estimation of initial cylinder pressure, air flow and EGR flow (if applicable) is used to establish a system that provides engine behavior by integrating an injection module, combustion module and engine control module to provide data indicative of engine behavior such as brake torque and power, air flow, EGR flow, cylinder pressure, brake specific fuel consumption, start of combustion, heat release rate, turbo-charger speed and other variables. These values can then be used to adjust commanded variables such as start of injection, commanded pulse width, rail pressure to meet operator demand. Also the output data can be used as a tool to determine how a conceptualized engine design will behave. This is particularly useful for gaseous-fuelled internal combustion engines where cylinder pressure influences behavior of injected gases in light of the fact that rail pressure and cylinder pressure are, generally, of a similar magnitude.
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Dunn Mark E.
Hill Philip G.
Li Guowei
Zhang Dehong
Cronin Stephen K.
Hoang Johnny H.
McAndrews Held & Malloy Ltd.
Westport Power Inc.
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