Internal-combustion engines – Combustion chamber means having fuel injection only – Combustible mixture stratification means
Reexamination Certificate
2011-04-05
2011-04-05
Vo, Hieu T (Department: 3747)
Internal-combustion engines
Combustion chamber means having fuel injection only
Combustible mixture stratification means
C123S090150
Reexamination Certificate
active
07918205
ABSTRACT:
A method for transitioning operation of a spark-ignition, direct-injection internal combustion engine having a two-step, variable phase valvetrain between HCCI and SI modes includes providing a low-lift intake valve, un-throttled stoichiometric SI operation intermediate a low-lift exhaust and intake valve HCCI mode and a high-lift exhaust and intake valve, un-throttled SI mode.
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Kuo Tang-Wei
Najt Paul M.
Wermuth Nicole
GM Global Technology Operations LLC
Vo Hieu T
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