Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1992-12-16
1994-03-01
Nelli, Raymond A.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123 9011, 123 9015, F01L 134
Patent
active
052898059
ABSTRACT:
A camshaft (26) has a vane (60) secured to an end thereof for non-oscillag rotation therewith. The camshaft also carries a sprocket (32) which can rotate with the camshaft (26) but which is also oscillatable with the camshaft (26). The vane (60) has opposed lobes (60a, 60b) which are received in opposed recesses (32a, 32b), respectively, of the sprocket (32). The recesses have greater circumferential extent than the lobes (60a, 60b) to permit the vane (60) and sprocket (32) to oscillate with respect to one another, and thereby permit the camshaft (26) to change in phase relative to a crankshaft whose phase relative to the sprocket (32) is fixed by virtue of a chain drive (38) extending therebetween.
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Ekdahl Earl W.
Quinn, Jr. Stanley B.
Borg-Warner Automotive Transmission & Engine Components Corporat
Nelli Raymond A.
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