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Vehicular braking device

A brake device and vehicle technology, applied in the direction of brake transmission device, brake action activation device, brake, etc., to achieve the effects of suppressing noise, reducing power consumption, and suppressing the reduction of wheel pressure

Active Publication Date: 2019-10-11
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned brake control device, winding-in occurs, and the wheel pressure on the high-pressure side decreases, so there is room for improvement in terms of wheel pressure regulation accuracy.

Method used

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  • Vehicular braking device
  • Vehicular braking device
  • Vehicular braking device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example ＞

[0016] Such as figure 1 As shown, the vehicle braking device 100 of the first embodiment includes a hydraulic pressure generating unit 1 , an actuator 5 , and a brake ECU (corresponding to a “control unit”) 6 .

[0017] The hydraulic pressure generating unit 1 includes a brake operating member 11 , a force multiplying device 12 , a cylinder mechanism 13 , and wheel cylinders 14 , 15 , 16 , and 17 . In the first embodiment, wheel cylinders 14 to 17 (or hydraulic pressure generating unit 1 ) and actuator 5 constitute a braking force imparting unit that imparts braking force to a plurality of wheels FR, FL, RR, and RL of the vehicle. The brake operating member 11 of the first embodiment is a brake pedal. The force multiplier 12 is a well-known device, and is a device that multiplies the pedaling force applied to the brake operating member 11 by the driver and transmits it to the cylinder mechanism 13 . As the force multiplying device 12, for example, a negative pressure type, a...

no. 2 example ＞

[0058] The vehicle braking device 100A of the second embodiment is mainly different from the configuration of the first embodiment in that it includes accumulators 21 , 22 and electromagnetic valves 31 , 32 . Therefore, the different parts will be described. In the description of the second embodiment, the description of the first embodiment and the drawings can be referred to. The required liquid volume used in the second embodiment is the same as the required liquid volume for the entrainment suppression control in the first embodiment.

[0059] Such as Figure 4 As shown, in addition to the structure of the first embodiment, the actuator 5 of the second embodiment also includes accumulators (equivalent to "pressure accumulators") 21, 22, and solenoid valves (equivalent to "fourth solenoid"). valve") 31, 32. Since both piping systems 50a and 50b have the same configuration, the first piping system 50a will be described.

[0060] The accumulator 21 is a pressure accumulat...

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Abstract

The present invention provides a vehicular braking device provided with: a pump (57) that discharges a brake fluid to an upstream part (59) connected to two wheel cylinders (14, 15); a first solenoidvalve (51) that adjusts a differential pressure between a master pressure and an upstream pressure that is the pressure of the upstream part (59); a second solenoid valve (52) that adjusts the pressure of one of the wheel cylinders, i.e., the wheel cylinder (14); a third solenoid valve (53) that adjusts the pressure of the other of the wheel cylinders, i.e., the wheel cylinder (15); and a controlpart (6) that controls the pressures of the two wheel cylinders (14, 15). The control part (6) sets the amount of the brake fluid discharged by the pump (57) on the basis of a required fluid amount that is the amount of the brake fluid required to increase the pressure of the low-pressure-side wheel cylinder among the two wheel cylinders (14, 15) up to the same pressure as a target value for the pressure of the high-pressure-side wheel cylinder.

Description

technical field [0001] The present invention relates to a brake device for a vehicle. Background technique [0002] The two wheel cylinders of the same system are connected to a common actuator with solenoid valves and pumps. The pressure (hydraulic pressure) of the two wheel cylinders (hereinafter also referred to as "wheel pressure") is adjusted by the actuators respectively. The actuator has an upstream portion commonly connected to the two wheel cylinders, the brake fluid is supplied to the upstream portion by a pump, and various wheel pressures are adjusted by controlling various electromagnetic valves. Here, when pressurizing two wheel cylinders arranged in the same system at the same time, it is necessary to open the solenoid valve provided for each wheel cylinder. If there is a difference in wheel pressure, the brake fluid passes through the common upstream part, From the wheel cylinder on the high pressure side to the wheel cylinder on the low pressure side. Conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/00B60T13/122B60T13/20B60T13/68
CPCB60T8/17B60T13/686B60T7/042B60T13/146B60T13/662B60T13/167
Inventor 东祥太大森阳介森雪生
Owner ADVICS CO LTD