초록 ▼

An anti-lock braking system (ABS) solenoid isolation valve integration is provided. When ABS is entered, the ABS supply pump is turned on and the solenoid normally open port is closed to prevent fluid from entering the wheel brake area from either the master cylinder or pump. The normally closed val

An anti-lock braking system (ABS) solenoid isolation valve integration is provided. When ABS is entered, the ABS supply pump is turned on and the solenoid normally open port is closed to prevent fluid from entering the wheel brake area from either the master cylinder or pump. The normally closed valve is then energized (opened) which releases pressure from the wheel causing a pressure drop across the isolation valve. The above causes the isolation valve to move closing a ball seat valve which isolates the master cylinder (pedal) from the wheel (pump, solenoid, etc). The actual movement of the isolation valve is caused by the pressure generated by the master cylinder.

대표청구항 ▼

A solenoid/isolation valve integration into a single ended body using master cylinder actuation for use in an anti-lock braking system including a master cylinder, wheel cylinder, reservoir, and a pressurized fluid source, said valve integration in combination comprising: a housing for mounting said

A solenoid/isolation valve integration into a single ended body using master cylinder actuation for use in an anti-lock braking system including a master cylinder, wheel cylinder, reservoir, and a pressurized fluid source, said valve integration in combination comprising: a housing for mounting said solenoid valve and said isolation valve, said housing including fluid connections for said master cylinder, wheel cylinder, reservoir and said pressurized fluid source, said housing also having a first fluid path connecting said master cylinder to said wheel cylinder, a second fluid path intersecting said first fluid path and connecting with said pressurized fluid source and a third fluid path intersecting with said first fluid path and connecting with said reservoir; a first solenoid having a first solenoid actuated valve member for controlling fluid communication in said first fluid path between said intersection of said first and second fluid paths and said wheel cylinder connection, said first solenoid having a normally open position; a second solenoid having a second solenoid actuated valve member positionally located on the same side of said first and second solenoids as said first solenoid valve member, and said second solenoid valve member controlling fluid communication in said third fluid path and said second solenoid having a normally closed position; and an isolation valve mounted within said first fluid path with a portion sealably separating said master cylinder from said wheel cylinder and when said anti-lock braking system is actuated said normally open solenoid valve member is closed and said normally closed solenoid valve member is opened allowing fluid to flow from said wheel cylinder to said reservoir and said isolation valve moves within said first fluid path by a pressure force provided by said master cylinder to isolate said master cylinder from said wheel cylinder.