Four valve per cylinder engine head

Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system

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Details

123310, 123315, 123432, F01L 118, F02P 1502

Patent

active

050073877

ABSTRACT:
An improved head assembly for an internal combustion gasoline engine having an internal camshaft and push rod system which has a head (20) adapted to utilize four valves per cylinder using push rods (50) without modification to the engine block. The exhaust valves (36) are positioned longitudinally parallel with each cylinder and the inlet valves 38 are at a 10 to 18 degree angle from the engine cylinder centerline. The push rods (50) are so positioned as to allow contact with rocker arms (40) lifting the valves in sequence.

REFERENCES:
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patent: 2700966 (1955-02-01), Hofer
patent: 2863429 (1958-12-01), Bouteleux
patent: 2884913 (1959-05-01), Heintz
patent: 3884199 (1975-05-01), Irimajiri et al.
patent: 4023543 (1977-05-01), Ishikawa
patent: 4520775 (1985-06-01), Nakamura
patent: 4660529 (1987-04-01), Yoshikawa
patent: 4819591 (1989-04-01), Valentine
patent: 4905646 (1990-03-01), Tanahashi

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