Internal-combustion engines – Poppet valve operating mechanism – Valve driven closed
Patent
1989-05-28
1990-05-29
Myhre, Charles J.
Internal-combustion engines
Poppet valve operating mechanism
Valve driven closed
123 9028, 123 9046, F01L 130, F01L 132
Patent
active
049286501
ABSTRACT:
A first rocker arm is used to induce valve lift while a second one used to move the valve back to closed position. The rocker arms are arranged to engage the valve top or retainer surfaces at locations offset from the axis of the valve and to induce the valve to rotate during the lift and closing operations. Springs, hydraulic lifters or double adjust screw type arrangements are used to control clearances.
REFERENCES:
patent: 2751895 (1956-06-01), Gassmann
patent: 2814283 (1957-11-01), Gassmann et al.
patent: 2824554 (1958-02-01), Sampietro
patent: 2831470 (1958-04-01), Lorscheidt
patent: 2833258 (1958-05-01), Lorscheidt et al.
patent: 4007716 (1977-02-01), Jones
patent: 4646690 (1987-03-01), Hayashi
patent: 4662323 (1987-05-01), Moriya
Hamai Kyugo
Kamegaya Shigeru
Matayoshi Yutaka
Yoshimura Toru
Lo Weilun
Myhre Charles J.
Nissan Motor Co,. Ltd.
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