Engine de-compression mechanism
OwnerRobert W. Janesinventor
Life of this patent
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Abstract
An engine de-compression mechanism in which the valves to one or more of the cylinders are locked in open position to prevent fuel from being drawn into the engine cylinder during the normal intake stroke and to prevent compression back pressure on the piston during the compression stroke. The function of the de-compression mechanism is to put one or more of the cylinders of the engine out of operation to conserve fuel when driving at high speeds.
Claims3
A valve deactivator for de-compressing selected cylinders of an internal combustion engine of the type including a cam shaft and valve lifters comprising an annular detent groove formed in the valve lifters, a reciprocatable detent shaft engageable in the groove to lock the valve lifter in valve lifted position thereby removing said lifters from said cam shaft, means for moving said detent shaft from valve lifter unlocking position to valve lifter locking position and back again, and spring means for further disengaging said detent shaft from said groove in said valve lifter upon inaction of the means for moving said detent shaft.
Dependencies are inferred from the claim text.