Camshaft driving arrangement for double overhead camshaft engine

Details Camshaft driving arrangement for double overhead camshaft engine Camshaft driving arrangement for double overhead camshaft engine

1989-12-14

1990-10-30

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

123195C, F01L 102

Patent

active

049661060

ABSTRACT:
A camshaft driving arrangement for a DOHC engine comprises two pairs of sprockets, each pair being mounted to the adjacent pair of camshafts, and two idler gears rotatably mounted to the cylinder banks, respectively. A timing chain drivingly interconnects the crankshaft and the two idler gears. On the other hand, two camshaft driving chains each interconnect one of the two idler gears and the adjacent two cam sprockets. A front cover is so constructed and arranged as to conceal the two idler gears and the timing chain.

REFERENCES:
patent: 4516546 (1985-05-01), Choushi et al.
patent: 4553473 (1985-11-01), Ichida et al.
patent: 4607601 (1986-08-01), Kohler
patent: 4643143 (1987-02-01), Uchiyama et al.
patent: 4648359 (1987-03-01), Ito
patent: 4674452 (1987-06-01), Asanomi
patent: 4750455 (1988-06-01), Ebesu
patent: 4878467 (1989-11-01), Schmidt
patent: 4883031 (1989-11-01), Ampferer

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