Internal-combustion engines – Burning by highly compressed air – Oil engine air preheated
Reexamination Certificate
2006-06-15
2008-07-15
Kamen, Noah (Department: 3747)
Internal-combustion engines
Burning by highly compressed air
Oil engine air preheated
C123S090150, C123SDIG005
Reexamination Certificate
active
07398744
ABSTRACT:
In a method of operating a 4-stroke internal combustion engine selectively in a compression ignition operation, in which an outlet valve of the internal combustion engine is closed at a comparatively early closing time point with respect to a crank angle (α) and in spark ignition operation, in which the outlet valve is closed at a comparatively late closing time point with respect to the crank angle (α), during the changeover from the spark ignition mode of operation to the compression ignition mode of operation, the closing time point of the outlet valve is transferred from the late closing time point to the early closing time point in steps distributed over multiple 4-stroke cycles.
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Brachert Götz
Herweg Rudiger
Kanning Kai
Pfau Matthias
Schäflein Jochen
Bach Klaus J.
Daimler AG
Kamen Noah
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