Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1998-09-01
2000-08-08
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9027, 123 9031, 1231933, F01L 1300
Patent
active
060985801
ABSTRACT:
A VVA apparatus includes a control rod controlling position of each of supports that are held for movement within a plane perpendicular to a shaft axis of a driving shaft. The supports have intermediate members, each being drivingly connected between a driving sleeve and a driven hollow camshaft. Spaced cam brackets hold the hollow cams, respectively, on a cylinder head of an engine. The control rod has eccentric cams at predetermined spaced portions for driving connection with the supports, respectively. A control rod holding structure includes a base portion fixed to the cylinder head and bearing portions extending from the base portion. The bearing portions of the control rod holding structure hold the control rod at locations in the vicinity of the predetermined spaced portions where the eccentric cams are.
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patent: 5787849 (1998-08-01), Mitchell
Goto Tetsuro
Yamada Yoshihiko
Lo Weilun
Nissan Motor Co,. Ltd.
Unisia Jecs Corporation
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