2-position 3-way solenoid valve, modulator and anti-lock...

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 31/06 (2006.01) B60T 8/34 (2006.01) B60T 8/36 (2006.01) B60T 8/42 (2006.01) B60T 8/50 (2006.01) F15B 13/044 (2006.01)

Patent

CA 2202973

A 2-position 3-way solenoid valve having first, second and third ports and first and second chambers. The first chamber is communicated with the first port and the second chamber is communicated with the second and third ports. The chambers are partitioned by a barrier wall and are communicated with each other by an opening formed to the barrier wall. In response to a valve- actuated signal, a spool is moved in lengthwise direction, so that the opening and the third port are opened alternatively. When the third port is closed, the hydraulic pressure generated from a hydraulic pump is supplied to a brake wheel cylinder through the first and second ports to increase braking pressure. When the opening is closed, the hydraulic pressure within the brake wheel cylinder is decreased through the second and third ports to decrease braking pressure.

Vanne électromagnétique à trois voies et deux positions comportant trois orifices et deux chambres. La première de ces chambres communique avec le premier orifice tandis que la deuxième communique avec les deuxième et troisième orifices. Les chambres sont cloisonnées par une paroi et communiquent entre elles par une ouverture ménagée dans ladite paroi. En réponse à un signal déclenché par la vanne, un tiroir se déplace dans le sens longitudinal de telle sorte que l'ouverture et le troisième orifice s'ouvrent alternativement. Lorsque le troisième orifice est clos, la pression hydraulique générée par une pompe hydraulique est envoyée à un cylindre de frein de roue par les premier et deuxième orifices, de sorte qu'elle augmente. Lorsque l'ouverture est fermée, la pression hydraulique à l'intérieur du cylindre de frein décroît en passant par les deuxième et troisième orifices, ce qui entraîne un abaissement de la pression de freinage.

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