Valve drive apparatus for double overhead camshaft engine

Details Valve drive apparatus for double overhead camshaft engine Valve drive apparatus for double overhead camshaft engine

1990-07-02

1991-07-23

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

123193H, F01L 126

Patent

active

050334220

ABSTRACT:
A valve drive apparatus comprises a pair of valve trains, each having a rocker arm and a hydraulic lash adjuster, arranged symmetrically with respect to a center axis of each cylinder of a double overhead camshaft engine. Either one of the pair of valve trains that has a rocker arm leverage greater than a rocker arm leverage of the other of the pair of valve trains is adapted and designed so as to have a structural rigidity higher than the structural rigidity of the other.

REFERENCES:
patent: 4617881 (1986-10-01), Aoi et al.
patent: 4624222 (1986-11-01), Yoshikawa
patent: 4957079 (1990-09-01), Nakatani et al.

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