Internal-combustion engines – Four-cycle – Having subcharger associated with the cylinder
Reexamination Certificate
2007-08-21
2007-08-21
Wolfe, Jr., Willis R. (Department: 3747)
Internal-combustion engines
Four-cycle
Having subcharger associated with the cylinder
C123S432000, C123S090160
Reexamination Certificate
active
10910509
ABSTRACT:
A method for controlling the output of an internal combustion engine includes opening an intake valve on a cylinder; receiving air from an intake manifold into the cylinder during an intake stroke of a piston in the cylinder; returning excess air from the cylinder back into the intake manifold during the initial portion of the compression stroke of the piston, wherein a quantity of combustion air or air/fuel mixture necessary for a desired engine power output remains in the cylinder; and then closing the intake valve. A control device includes a control camshaft rotatively coupled to the crankshaft having a control cam with lobes that engage the intake valves for holding one or more intake valves open; a cam phaser to vary the phase of the controlled cam relative to the main camshaft; and a cam phase controller linked to the cam phaser, wherein advancing the phase of the control cam increases the power output of the internal combustion engine.
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Steele Patrick K.
Streets & Steele
Wolfe, Jr. Willis R.
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