Valve control arrangement

Details Valve control arrangement Valve control arrangement

1986-06-16

1988-08-23

Wolfe, Jr., Willis R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9057, F01L 124, F01L 134

Patent

active

047652888

ABSTRACT:
A valve control arrangement for controlling closing and opening time of a valve actuatable by a valve control cam of a cam shaft via an axially displaceable valve plunger, in a displacement piston-internal combustion engine, the valve control arrangement comprises a stroke transmitting chamber between the valve control cam and the valve plunger and arranged to be filled with a working medium, a controllable opening for supplying the pressure medium into the stroke transmitting chamber and withdrawing the pressure medium from the latter so as to change an axial dimension of the stroke transmitting chamber between the valve control cam and the valve plunger, device for controlling the opening so that a stroke of the valve control cam which acts with the beginning of a valve opening adjusts the opening to an unloading cross-section so that to a closing point of time of the valve, a partial quantity of the pressure medium can flow out of the stroke transmitting chamber.

REFERENCES:
patent: 2587538 (1957-02-01), Seaman
patent: 3788597 (1974-01-01), Ichioka
patent: 3829060 (1974-08-01), von Lewis
patent: 4206728 (1980-06-01), Trenne
patent: 4258671 (1981-03-01), Takizawa et al.
patent: 4466390 (1984-07-01), Babitzka et al.
patent: 4494495 (1985-01-01), Nakamura et al.
patent: 4509467 (1985-04-01), Arai et al.

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