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

1990-09-18

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

123 9027, F01L 102

Patent

active

049570773

ABSTRACT:
A camshaft driving arrangement for a DOHC engine comprises two pairs of cam sprockets, each pair being mounted to each of the camshafts at one end thereof, and two idler gears, each being rotatably mounted to one of the cylinder heads. A first camshaft driving chain drivingly interconnects one of the idler gears and the adjacent pair of the cam sprockets. On the other hand, a second camshaft driving chain drivingly interconnects the other of the idler gears and the other pair of the cam sprockets. The second camshaft driving chains have different running planes which are axially spaced along the axis of the crankshaft.

REFERENCES:
patent: 4553473 (1985-11-01), Ichida et al.
patent: 4716864 (1988-01-01), Binder
patent: 4729348 (1988-03-01), Okada et al.
patent: 4750455 (1988-06-01), Ebesu

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