Internal-combustion engines – Engine speed regulator – Having condition responsive means with engine being part of...
Reexamination Certificate
2007-03-20
2007-03-20
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Engine speed regulator
Having condition responsive means with engine being part of...
Reexamination Certificate
active
11164047
ABSTRACT:
Systems and methods for controlling stopping position of a crankshaft during shutdown of a multiple cylinder internal combustion engine influence cylinder pressure independent of associated intake/exhaust valves during shutdown of the engine so the crankshaft stops in a position favorable for restarting. Embodiments include an engine having variable compression ratio cylinders with the compression ratio of the cylinders controlled to vary cylinder pressure during shutdown to control stopping position of the crankshaft, or an auxiliary control valve disposed in a cylinder wall to control pressure within the cylinders during shutdown so the crankshaft stops in a position desirable for restarting.
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Greiser Klemens
Kramer Ulrich
Phlips Patrick
Steiner Bernd
Benton Jason
Bir Law, PLC
Cronin Stephen K.
Lewis Donald J.
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