Multi-valve engine

Details Multi-valve engine Multi-valve engine

1990-09-26

1991-07-16

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

123 9035, 123196M, 123432, F01L 126

Patent

active

050315862

ABSTRACT:
A multi-valve engine of the type having a line of cylinders, intake and exhaust camshafts, and rocker arms for operatively connecting valves to the camshafts includes a first valve group of three valves consisting of either intake valves or exhaust valves and a second valve group consisting of the other of either intake valves or exhaust valves. Each of the valves of the first valve group is oriented such that a valve stem thereof is inclined outwardly to one side of the line of cylinders, while each of the valve of the second valve group is oriented such that a valve stem thereof inclines outwardly to an opposite side of the line of cylinders. First hydraulic lash adjuster means for a centrally-located valve out of three valves of the first valve group is positioned closer to a bore center of the cylinder than the centrally-located valve, or on a delay side in the rotational direction of the camshaft. Second and third hydraulic lash adjuster means for side-located valves of the three valves of the first valve group are positioned farther from the bore center than the side-located valves, or on a leading side in the rotational direction of the camshaft.

REFERENCES:
patent: 4617881 (1986-10-01), Aoi et al.
patent: 4617896 (1986-10-01), Yoshikawa
patent: 4621597 (1986-11-01), Kawada et al.
patent: 4624222 (1986-11-01), Yoshikawa
patent: 4637356 (1987-01-01), Kuroda
patent: 4709667 (1987-12-01), Ichihara et al.
patent: 4766866 (1988-08-01), Takii et al.

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