Variable valve apparatus of internal combustion engine

Details Variable valve apparatus of internal combustion engine Variable valve apparatus of internal combustion engine

2007-06-26

2007-06-26

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090600, C123S090310

Reexamination Certificate

active

11452265

ABSTRACT:
A variable valve apparatus of an internal combustion engine adopts a structure in which, a transmission arm is laid out such that, when a distance from a contact point where a cam contacts a transmission arm to an oscillating fulcrum of the transmission arm is defined as A, and a distance from the oscillating fulcrum of the transmission arm to a point of action of the transmission arm is defined as B to thereby determine a B/A value, θ1 as a B/A value at the time of a high valve lift control for controlling valve lift characteristics, and θ2 as a B/A value at the time of a low valve lift control for controlling valve lift characteristics establish a relation of θ1>θ2.

REFERENCES:
patent: 6959674 (2005-11-01), Fischer
patent: 2003-239712 (2003-08-01), None

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