Automatic compression adjusting mechanism for internal combustio

Details Automatic compression adjusting mechanism for internal combustio Automatic compression adjusting mechanism for internal combustio

1981-05-22

1983-09-27

Cuchlinski, Jr., William A.

Internal-combustion engines

Four-cycle

Variable clearance

123197R, F02B 7504

Patent

active

044062567

ABSTRACT:
Means for controlling the compression pressure in an internal combustion engine having one or more cylinders and subject to widely varying power output requirements. Received between each crank pin (C) and connecting rod (D) is an eccentric sleeve (F) selectively capable of rotation about the crank pin and/or inside the rod and for latching with the rod (D) to vary the effective length of the connecting rod and thereby the clearance volume of the engine. The eccentric normally rotates inside the connecting rod during the exhaust and intake strokes but a latching pawl (F) carried by the eccentric is movable radially outwardly to latch the rod and eccentric together during the compression and power strokes. A control valve (J) responds to intake manifold pressure to time the supply of hydraulic fluid to move the latch-pawl outwardly, varying the effective rod length to maintain a substantially optimum firing chamber pressure at all intake manifold pressures.

REFERENCES:
patent: 2060221 (1936-11-01), King
patent: 4140091 (1979-02-01), Showers, Jr.
patent: 4173202 (1979-11-01), Crise
patent: 4195601 (1980-04-01), Crise
patent: 4319498 (1982-03-01), McWhorter

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