Engine with variably adjustable compression ratio, and...

Details Engine with variably adjustable compression ratio, and... Engine with variably adjustable compression ratio, and...

2006-04-04

2006-04-04

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Four-cycle

Variable clearance

Reexamination Certificate

active

07021254

ABSTRACT:
A variable compression ratio engine includes a control actuator which has a simple structure, seals well internally, and provides high reliability. In the variable compression ratio engine, a connecting rod is divided into at least two portions. A control rod is operatively connected to a juncture of the connecting rod. A support shaft position of the control rod is displaced. The control rod is operatively connected to a right cylinder rod of a piston-type double-acting hydraulic control cylinder. A piston section of the hydraulic control cylinder is configured to selectively move in accordance with displacement of the support shaft position of the control rod. A channel is used to connect two hydraulic chambers divided by the piston section. The channel is configured to selectively control the flow of hydraulic fluid from the right hydraulic chamber to the left hydraulic chamber, and vice versa.

REFERENCES:
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patent: 6202623 (2001-03-01), Ehrlich
patent: 1 143 127 (2001-10-01), None
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patent: 62 041970 (1987-07-01), None
patent: 2001214770 (2001-08-01), None
patent: 2001289079 (2001-10-01), None

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