Patent ID: 6464306
Filing Date: 2002-10-15
Classification: B60T

Abstract:
An emulator for a motor vehicle braking system operably connected to an operator controlled brake actuator for said braking system, said emulator comprising:a housing including a bore formed therein; a first piston disposed in said bore for linear reciprocating movement in said bore; an actuating member adapted to inter connect said first piston with said operator controlled brake actuator; a first spring disposed in said bore and operably engaged with said first piston; a first magnet for generating a magnetic field in the vicinity of said housing; a first sensor mounted on said housing for sensing a change in said magnetic field in response to movement of said operator controlled brake actuator, said first piston and said first spring; said first sensor being operable to generate a signal related to displacement of said piston and said first spring in response to movement of said operator controlled brake actuator; and a second piston mounted in said bore and operably engaged with said first spring and with a second spring supported in said bore, said second piston being moveable in response to movement of said first piston and against the urging of said second spring, and a second sensor operable to sense a change in a magnetic field in response to movement of said second piston against the urging of said second spring.