Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Reexamination Certificate
2005-01-11
2005-01-11
Kwon, John T. (Department: 3747)
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
C123S681000, C123S679000
Reexamination Certificate
active
06840237
ABSTRACT:
The invention relates to an internal combustion engine comprising a fuel injector (2) for each cylinder; a fuel injection control unit (4) for controlling fuel injection quantity and a piston (5) in each cylinder whose compression action causes a mixture of air and fuel to be ignited. The engine is further provided with inlet and outlet valves (6, 7) and various sensors (12-16) for measuring various engine operating parameters. During compression ignition mode, the control unit (4) is arranged to select a λ-value from a map stored in the control unit, which value is a function of engine load and engine speed, and to compare the actual λ-value with the selected λ-value; whereby the control unit is arranged to adjust the intake manifold pressure as a function of the difference between the said λ-values in order to obtain the selected λ-value. The invention further relates to a method for operating the engine and a computer readable storage device (4).
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Koopmans Lucien
Strom Hans
Kwon John T.
Lippa Allan J.
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