System and method for determining relative vehicle mass

Details System and method for determining relative vehicle mass System and method for determining relative vehicle mass

1994-04-22

1996-01-09

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 7, 303 221, 303DIG2, B60T 818

Patent

active

054823595

ABSTRACT:
A system and method for determining vehicle mass relative to a previous mass of the same vehicle utilizes a closed-loop control system to bring the vehicle to a controlled deceleration upon initiation of the procedure. The relative mass of the vehicle is determined by sensing the applied braking pressures at each of the vehicle axles and processing that information to generate the total braking force being applied to the wheels of the vehicle. Since a greater mass requires a greater braking force to achieve the same deceleration, the necessary braking force is indicative of the relative vehicle mass. An appropriate braking mode such as work balance, proportioning, or ABS, can then be determined based on the relative vehicle mass to better control subsequent braking maneuvers.

REFERENCES:
patent: 4402047 (1983-08-01), Newton et al.
patent: 4712839 (1987-12-01), Brearley et al.
patent: 4822113 (1989-04-01), Amberg et al.
patent: 5382085 (1995-01-01), Zbinden

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