Timing control device having at least one intermediate timing po

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Speed responsive device for adjusting relative rotational... – Actuated by fluid or electricity

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123 9017, F01L 134

Patent

active

054357829

ABSTRACT:
A timing variator which is constructed to provide at least three predetermined different relative angular settings of the camshaft and the timing system of an internal combustion engine; the variator comprises a piston actuator slidable inside a space against a spring as a pressurized fluid is delivered into a supply chamber thereof. When the piston is to be stopped at a position intermediate to two end-of-stroke positions, in order to obtain an intermediate timing setting, pressurized fluid is delivered behind the piston, thereby producing an additional thrust concurrent with the spring thrust and partly balancing out the pressure of the medium being delivered into the supply chamber.

REFERENCES:
patent: 4996955 (1991-03-01), Akasaka et al.
patent: 5040499 (1991-08-01), Akasaka et al.
patent: 5058539 (1991-10-01), Saito et al.
patent: 5088456 (1992-02-01), Suga
patent: 5203290 (1993-08-01), Tsuruta et al.
patent: 5309873 (1994-05-01), Suga et al.
patent: 5311846 (1994-05-01), Mueller

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