Variable valve control system for a piston internal-combustion e

Details Variable valve control system for a piston internal-combustion e Variable valve control system for a piston internal-combustion e

1986-05-30

1987-12-22

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9027, 123 9044, F01L 134

Patent

active

047140577

ABSTRACT:
In a variable valve control system for an internal-combustion engine, having an intake valve actuated by a valve lever that can be pivoted around a shiftable bearing point, a lift camshaft and a control camshaft are provided. The camshafts control the pivoting of the valve lever. The system also includes a device for phase-shifting the control camshaft relative to the lift camshaft in response to operating parameters of the internal-combustion engine. This provides for premature closing of the intake valve.

REFERENCES:
patent: 2021333 (1935-11-01), Storey
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patent: 3463131 (1969-08-01), Dolby
patent: 3610218 (1971-10-01), Durham
patent: 3817228 (1974-06-01), Bywater
patent: 3995606 (1976-12-01), Firey
patent: 4452187 (1984-06-01), Kosuda et al.
patent: 4506635 (1985-03-01), van Rinsum
patent: 4526142 (1985-07-01), Hara et al.
patent: 4530318 (1985-07-01), Semple

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