F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
F02B 75/04 (2006.01) F01B 9/04 (2006.01) F02B 75/32 (2006.01) F02D 15/02 (2006.01) F16K 11/056 (2006.01) F16K 11/10 (2006.01) F16K 15/18 (2006.01) F16K 31/124 (2006.01)
Patent
CA 2727631
The device for adjusting the compression ratio of a variable compression ratio engine comprising a double-acting hydraulic control actuator (8) comprising an upper chamber (121) and a lower chamber (122) and at least one actuator piston (13) connected to a control rack (7) comprises: at least two balls (401, 402) or shutters each resting on a seat (403, 404) and each respectively closing off one end of a transfer port (405) connecting the upper chamber (121) and the lower chamber (122) of the control actuator (8), the said balls (401, 402) acting as non-return valves when held on their seat (403, 404) by a spring (408, 409) so as to allow hydraulic fluid to pass only in one direction; and lift means (410) allowing the balls (401, 402) to be lifted off their seat (403, 404) so that the said balls allow hydraulic fluid to pass in both directions.
Le dispositif de réglage du taux de compression d'un moteur à taux de compression variable comprenant un vérin de commande hydraulique à double effet (8) comportant une chambre supérieure (121) et une chambre inférieure (122) et au moins un piston de vérin (13) relié à une crémaillère de commande (7) comprend : Au moins deux billes (401, 402) ou clapets reposant chacune sur un siège (403, 404) et obturant respectivement l'une et l'autre extrémité d'un canal de transfert (405) reliant la chambre supérieure (121) et la chambre inférieure (122) du vérin de commande (8), lesdites billes (401, 402) agissant comme un clapet anti- retour lorsqu'elles sont maintenues sur leur siège (403, 404) par un ressort (408, 409) afin de ne laisser passer le fluide hydraulique que dans un sens; Et des moyens de levage (410) permettant de soulever les billes (401, 402) de leur siège (403, 404) pour que lesdites billes laissent passer le fluide hydraulique dans les deux sens.
Rabhi Vianney
Robic
LandOfFree
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