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US 6,550,436 B2Granted
Intake valve control device of internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsTsuneyasu Nohara, Shinichi Takemura, Shunichi Aoyama
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AssigneeNissan Motor Co., Ltd.
InventorsTsuneyasu Nohara, Shinichi Takemura, Shunichi Aoyama
Estimating the term…
An internal combustion engine has an intake valve control device for controlling at least intake valves. The control device comprises a first mechanism which varies a working angle of the intake valve; a second mechanism which varies an operation phase of the intake valve; and a control unit which controls both the first and second mechanisms in accordance with an operation condition of the engine. The control unit is configured to carry out controlling variation in the open timing of the intake valve effected by the first mechanism to be larger than variation in the open timing of the intake valve effected by the second mechanism.
In an internal combustion engine having intake and exhaust valves, a first mechanism which varies a working angle of the intake valve and a second mechanism which varies an operation phase of the intake valve,
An intake valve control device of an internal combustion engine having intake and exhaust valves, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Term ended 2 Oct 2021 (estimated)
1. Field of Invention
The present invention relates in general to a control device for controlling an internal combustion engine, and more particularly to an intake valve control device of an internal combustion engines, which comprise a working angle varying mechanism for varying the working angle of an intake valve and an operation phase varying mechanism for varying an operation phase of the intake valve.
2. Description of Related Art
FIG. 1 is a perspective view of an intake valve control device of an internal combustion engine, which is an embodiment of the present invention;
FIG. 2 is a sectional view of the intake valve control device of the invention, showing a part where an working angle varying mechanism is arranged;
FIG. 3 is a schematic view of the working angle varying mechanism of the intake valve control device of the invention, which is taken from the direction of the arrow “III” of FIG. 1;
In the following, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. For ease of understanding, various directional terms such as, right, left, upper, lower, rightward, etc., are used in the description. However, such terms are to be understood with respect to only a drawing or drawings on which the corresponding element or part is illustrated.
As will become apparent as the description proceeds, an intake valve control device of the present invention is explained as to be applied to an internal combustion engine having cylinders each having two intake valves and two exhaust valves, and for ease of explanation, the following description is directed to only a part of the control device, which is associated with one of the cylinders of the engine.
Referring to FIGS. 1 to 3, particularly FIG. 1, there is shown an intake valve control device of an internal combustion engine, which is an embodiment of the present invention.