Unlock instant, AI-driven research and patent intelligence for your innovation.

Vehicle brake system

A vehicle braking and vehicle technology, applied in brakes, fluid pressure actuation devices, remote control motors, etc., can solve problems such as hydraulic pressure response differences, and achieve the effect of reducing hydraulic pressure response differences

Inactive Publication Date: 2007-10-31
TOYOTA JIDOSHA KK
View PDF1 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, as described in JP-A-11-180294, in a hydraulic fluid passage, when two passages are connected to each other with a communication valve interposed therebetween, the communication valve serves as an orifice and can cause communication when the pressure changes Difference in hydraulic pressure response between the two sides of the valve

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle brake system
  • Vehicle brake system
  • Vehicle brake system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings.

[0030] FIG. 1 shows a first embodiment of the present invention, and describes a schematic configuration of a vehicle in which a vehicle brake system is used. The vehicle shown in FIG. 1 is a hybrid vehicle. The vehicle 1 includes: an engine 2; a three-shaft power split mechanism 3 connected to a crankshaft as an output shaft of the engine 2; a motor generator 4 for generating electricity connected to the power split mechanism 3; an electric motor connected to the power split mechanism 3, And the transmission 5 is interposed between the electric motor 6 and the power split mechanism 3; and an electronic control unit 7 for a hybrid drive system (hereinafter referred to as "hybrid ECU"; each electronic control unit The abbreviation is used here as "ECU"). Right and left front wheels 9FR and 9FL as drive wheels of the vehicle 1 are con...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A hydraulic brake unit applies braking force to a plurality of wheels of a vehicle according to the operation of a brake pedal. A pressure increase linear control valve supplies hydraulic fluid from an accumulator to wheel cylinders of disc brake units of the respective wheels. Pressure-sustaining valves are placed in passages that extend from a first passage to the rear wheel cylinders. A pressure-increase response-delay reduction section closes the pressure-sustaining valves for a predetermined period of time after starting the hydraulic pressure control to temporarily limit the inflow of hydraulic fluid into the wheel cylinders that communicate with the first passage. Thus, the amount of the hydraulic fluid that is supplied to the second passage is increased, and it is possible to reduce the hydraulic pressure response delay in the second passage.

Description

technical field [0001] The present invention relates to a vehicle braking system for applying a braking force to a plurality of wheels of a vehicle in accordance with the operation of a brake pedal. Background technique [0002] There is available an electronically controlled vehicle braking system that controls braking force by adjusting hydraulic pressure supplied to wheel cylinders via a pressure source and a hydraulic pressure controller. By using such a vehicle brake system, cost can be reduced by reducing the number of control valves for maintaining pressure and control valves for reducing pressure to be installed. A vehicle braking system is described in Japanese Patent Application Laid-Open No. 11-180294 (JP-A-11-180294), which has a pair of linear control valves for maintaining pressure and reducing pressure respectively, and a communication valve A hydraulic fluid passage that divides into two passages, two of which communicate with the wheel cylinders of the diff...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60T11/228
CPCB60T8/267B60T8/4081B60T8/266
Inventor 冈野隆宏大朋昭裕深泽司
Owner TOYOTA JIDOSHA KK