Method of controlling hydraulic braking pressure for vehicle

Details Method of controlling hydraulic braking pressure for vehicle Method of controlling hydraulic braking pressure for vehicle

1990-10-22

1992-04-21

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple control

Fluid and electric

303101, 303117, 303119R, 303 93, B60T 700, B60T 832

Patent

active

051061678

ABSTRACT:
A method of controlling hydraulic braking pressure in a vehicle, wherein an electrically operated actuator produces a hydraulic braking pressure in response to an applying electricity level applied to the actuator, such that the hydraulic pressure increases as the applying electricity level increases, includes the steps of setting the applying electricity level in correspondence to an amount of braking operation, determining at least two types of electricity levels having larger and smaller variation rates with respect to a variation in an amount of braking operation, and changing the applying electricity level having the larger variation rate to an applying electricity level having the smaller variation rate, when the amount of braking operation is greater than or equal to a switchover set value.

REFERENCES:
patent: 4327414 (1982-04-01), Klein
patent: 4365847 (1982-12-01), Martin
patent: 4940291 (1990-07-01), Sato

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