Valve train for internal combustion engine

Details Valve train for internal combustion engine Valve train for internal combustion engine

1986-07-11

1988-04-26

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Plural valve trains, single actuator

123 9043, 123 9046, F01L 126

Patent

active

047397349

ABSTRACT:
A valve train for an internal combustion engine includes a mounting member mounted on a cylinder head, and a pair of elongated rocker arms interposed between a camshaft and the mounting member. Each rocker arm has opposite first and second sides facing a camshaft and the mounting member, respectively. The rocker arm has opposite ends held respectively against the camshaft and a respective one of intake and exhaust valves at the first side of the rocker arm. A pair of hydraulic tappets are mounted on the mounting member. Each hydraulic tappet includes an axially-extensible elongated body, and a tubular boot of an elastic material mounted around the body to form an oil reservoir therebetween. Each hydraulic tappet has one end held against the second side of a respective one of the rocker arms intermediate the opposite ends of the rocker arm, and the other end of the hydraulic tappet is held by the mounting the against movement away from the rocker arm, whereby upon rotation of the camshaft, each rocker arm is pivotally moved about the one end of the hydraulic tappet for moving a respective one of the intake and exhaust valves.

REFERENCES:
patent: 3045657 (1962-07-01), Sampietro
patent: 3170446 (1965-02-01), Dolza
patent: 3376860 (1968-04-01), Johnson et al.

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