Stroke detection correcting system for variable displacement typ

Details Stroke detection correcting system for variable displacement typ Stroke detection correcting system for variable displacement typ

1989-09-25

1990-10-30

Fox, John C.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417222, F04B 900

Patent

active

049665294

ABSTRACT:
A stroke detection correcting system for variable displacement type compressors comprises a variable displacement type compressor including a plurality of working pistons operatively connected to an internal combustion engine and variable in stroke, a stroke detecting device for detecting the operation stroke of the working pistons, a switching device for changing the switching mode when the stroke of each working piston is in a given range previously set, and a correcting circuit for correcting the detected value from the stroke detecting device on the basis of a predetermined value in accordance with the changing of the switching mode of the switching device. This makes it possible to correct the detected value from the stroke detecting device on the basis of the actual operation stroke of the working piston to provide a substantially correct stroke value, regardless of an error of attachment of and a deterioration with age of the stroke detecting device.

REFERENCES:
patent: 4655689 (1987-04-01), Westveer et al.
patent: 4708596 (1987-11-01), Palm et al.
patent: 4737079 (1988-04-01), Kurosawa et al.
patent: 4886422 (1989-12-01), Takeuchi et al.
"Industriellen Messetchnik", Profos, Vulkan-Verlag-Essen, 1987, pp. 237, 263 and 264.
"Lexikon der Elektronik", Neufang, Friedr. Vieweg & Sohn, 1983, p. 186.
"Kleines Lexikon der Bertriebsmesstechnik", Jeschke, Reihe Automatisierungstechnik, 1968, pp. 42 and 43.

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