Drive mechanisms

Details Drive mechanisms Drive mechanisms

1987-10-08

1989-05-23

Dolinar, Andrew M.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

123 9027, F01L 104

Patent

active

048319759

ABSTRACT:
A cam shaft driving device for an engine which is adapted to operably associate a cam gear located on a cam shaft of an upper portion of an engine body with a driving gear on a crank shaft of a lower portion of the engine body, with this association being effected through the intermediary of a cam idling gear. In this device, first and second wall portions, mutually displaced along the axis of crank shaft rotation of the engine and projecting outwardly and laterally from both sides of the engine body, provide a receiving space. This receiving space is provided between adjacent cylinders in the engine body and is larger in laterally extending width than a diameter of the cylinders, with this width extending laterally of the cylinders and transversely of the axis of rotation of the crank shaft. A single gear holder is located in said receiving space, with this gear holder being mounted on at least one of the wall portions. The cam idling gear is rotatably supported and received on a side surface of the single gear holder. A shock absorbing, swingable boss/bearing arrangement may be provided for supporting the idling gear so as to control back lash phenomena.

REFERENCES:
patent: 2857773 (1958-10-01), Slonek
patent: 4617882 (1986-10-01), Matsumoto

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