Engine with variable value timing device

Details Engine with variable value timing device Engine with variable value timing device

2007-05-22

2007-05-22

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

11226933

ABSTRACT:
An engine includes a variable valve timing device coupled to a camshaft, which operates within a cam chamber of the engine. The variable valve timing device includes a hydraulic pressure switchover valve having an elongated valve body. The switchover valve is disposed outside the cam chamber and is oriented such that a longitudinal axis of the elongated valve body lies generally parallel to a rotational axis of the camshaft. In this manner, the engine size can generally remain compact while still employing a variable valve timing device with a switchover valve.

REFERENCES:
patent: 5247914 (1993-09-01), Imai et al.
patent: 5522352 (1996-06-01), Adachi et al.
patent: 5988126 (1999-11-01), Strauss et al.
patent: 07-293210 (1995-11-01), None

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