Intake and exhaust valve system for internal combustion engine

Details Intake and exhaust valve system for internal combustion engine Intake and exhaust valve system for internal combustion engine

1984-01-20

1985-07-23

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9024, 123 9027, 123 9031, F01L 134

Patent

active

045303185

ABSTRACT:
A system for controlling the timing of poppet-type intake and/or exhaust valves in internal combustion engines of the four-cycle spark or compression ignition and two-cycle compression ignition type that may be normally aspirated, supercharged or turbocharged, wherein the timing is adjusted automatically or manually in relation to the speed of the engine to obtain optimum efficiency at any given speed. Dual camshafts are utilized, one for opening the valves, and one for closing the valves. An adjustable timing mechanism between the crankshaft and the camshafts simultaneously adjusts the opening and closing cycles of the valves.

REFERENCES:
patent: 1265799 (1918-05-01), McKechnie
patent: 2851023 (1958-09-01), Durkan
patent: 2954017 (1960-09-01), Forstner
patent: 3367312 (1968-02-01), Jonsson
patent: 3413965 (1968-12-01), Gavasso
patent: 4134371 (1979-01-01), Hausknecht
patent: 4174683 (1979-11-01), Vivian
patent: 4224906 (1980-09-01), Happel
"Variable Valve Timing", D. Scott, Popular Science, pp. 96-97, May 1980.

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