Variable valve unit for vee shape engine

Details Variable valve unit for vee shape engine Variable valve unit for vee shape engine

2007-08-21

2007-08-21

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090310, C123S090390

Reexamination Certificate

active

11103509

ABSTRACT:
A rocker arm mechanism opens and closes an intake valve. The intake valve is driven by cam of a cam shaft. The rocker arm mechanism is provided in each of bank. The rocker arm mechanism has a structure which changes a phase of the intake valve while displacing a portion driven by the cam to a circumferential direction of the cam shaft. A structure provided with an inversion mechanism inverts a rotating direction of the camshaft of one bank with respect to a rotating direction of the camshaft of the other bank. A variable valve unit having the simple and same structure can be used in both banks. A phase is varied so that a valve closing timing is set larger than a valve opening timing for each bank.

REFERENCES:
patent: 4674452 (1987-06-01), Asanomi
patent: 5992361 (1999-11-01), Murata et al.
patent: 3245492 (2001-10-01), None

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