Valve train for V-type double-overhead-camshaft engine

Details Valve train for V-type double-overhead-camshaft engine Valve train for V-type double-overhead-camshaft engine

1989-07-14

1990-04-10

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Overhead camshaft

123 9031, 123 9034, F01L 102, F01M 910

Patent

active

049150669

ABSTRACT:
A V-type DOHC engine has first and second banks. The end of the cylinder row in the first bank on one end of the engine retracts from that of the cylinder row in the second bank. A first camshaft in each bank is driven by the crankshaft by way of a first transmission mechanism which is disposed on said one end of the engine, and the first and second camshafts in each bank are connected by a second transmission mechanism which is disposed between the first transmission mechanism and the cylinder row of the bank. The end portion of the first camshaft in the first bank on said one end of the engine is supported by a pair of bearings one disposed between the first and second transmission mechanisms and the other disposed between the second power transmission mechanism and the cylinder row in the first bank. The end portion of the second camshaft in the first bank on said one end of the engine is supported by a bearing disposed between the second transmission mechanism and the cylinder row in the first bank. The end portion of each of the camshafts in the second bank on said one end of the engine is supported by a bearing disposed between the first and second transmission mechanisms.

REFERENCES:
patent: 4610224 (1986-09-01), Fujita
patent: 4617882 (1986-10-01), Matsumoto
patent: 4658769 (1987-04-01), Horio et al.
patent: 4674452 (1987-06-01), Asanomi
patent: 4716864 (1988-01-01), Binder
patent: 4729348 (1988-03-01), Okada et al.
patent: 4840149 (1989-06-01), Fujita

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