Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric
Patent
1992-12-16
1994-07-05
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Multiple systems
Fluid pressure and electric
188156, 188159, 188181T, 303 15, 303DIG3, B60L 724, B60T 1374
Patent
active
053261585
ABSTRACT:
A brake controlling apparatus in an electric vehicle comprising a hydraulic brake including a fluid pressure generating and applying device having a characteristic in which the fluid consumption rises in the fluid-pressure range of 0 to P.sub.0, and brakes the driving wheels by the fluid pressure of the fluid pressure applying device. A regenerative brake brakes the driving wheels by the regeneration of the power of a driving motor. A fluid flow cut-off device cuts off the flow of hydraulic fluid from the fluid pressure generating device to the fluid pressure applying device when the fluid pressure of the fluid pressure generating device exceeds P.sub.0. A fluid flow inducing device induces the flow of hydraulic fluid from the fluid pressure generating device to the fluid pressure applying device while maintaining the pressure difference between the fluid pressure generating and applying devices when the pressure difference exceeds .DELTA.P.sub.r. A fluid consuming device consumes the hydraulic fluid of the fluid pressure generating device with the characteristic approximate to the fluid consumption characteristic of the fluid pressure applying device when the fluid flow inducing device is inoperative. A regenerative braking controlling device controls the regenerative brake in correspondence with the pressure difference between the fluid pressure generating device and the fluid pressure applying device. The fluid consumption characteristic seen from the fluid pressure generating device is substantially the same as the fluid consumption characteristic of the fluid pressure applying device.
REFERENCES:
patent: 4181366 (1980-01-01), Dobner
patent: 4425005 (1984-01-01), Warwick
patent: 4671576 (1987-06-01), Fourie
patent: 4993780 (1991-02-01), Tanaka et al.
patent: 5050936 (1991-09-01), Tanaka et al.
Ohori Application "Brake Control System of Electric Vehicle", TYA-2083 filed Dec. 16, 1992.
Monzaki Shirou
Ohori Harumi
Oberleitner Robert J.
Poon Peter M.
Toyota Jidosha & Kabushiki Kaisha
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