Valve mechanism for internal combustion engine

Details Valve mechanism for internal combustion engine Valve mechanism for internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F01L 9/02 (2006.01) F01L 1/30 (2006.01) F01L 13/00 (2006.01)

Patent

CA 1223490

ABSTRACT OF THE DISCLOSURE A valve operation stopping mechanism for multi-cylinder internal combustion engine to cause selected cylinders to be inoperative under low load conditions for economy. A drive rocker arm is normally pivoted by a cam for each selected cylinder, a driven rocker arm is engaged with the suction or exhaust valve, a rocker shaft pivotably supports the drive rocker arm and the driven rocker arm so as to permit relative angular displacement, a synchro pin is provided in the driven rocker arm so as to slidably engage the drive rocker arm, and a timing piston is provided in the drive rocker arm opposite the synchro pin and control the position of the synchro pin by the action of hydraulic pressure. An arrangement of the timing pistons and hydraulic circuit causes the intake valve to always be rendered inoperative before the exhaust valve of a selected cylinder.

470133

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