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braking force generator

A technology for generating device and braking force, applied in the direction of braking action starting device, automatic starting device, brake, etc., can solve problems such as driver discomfort, and achieve the effect of preventing changes.

Active Publication Date: 2015-09-16
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the moment of closing, the source of the braking force is changed, causing the braking force to vary, thus causing discomfort to the driver

Method used

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Examples

Experimental program
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Effect test

no. 1 approach

[0049] figure 1 A block diagram of the braking force generator 1 according to the first embodiment of the present invention is shown in . The braking force generating device 1 has: a brake pedal 3; wheel cylinders 4a, 4b, 4c, 4d; a tandem master hydraulic cylinder M / C capable of generating hydraulic pressure through the operation of the brake pedal 3 by the driver; The hydraulic circuits 17a-18a-19a, 17a-18a-19b of the first hydraulic system connecting the first hydraulic chamber 24 of the main hydraulic cylinder M / C with the plurality of wheel brake cylinders 4a, 4b; The hydraulic circuits 17b-18b-19c, 17b-18b-19d of the second hydraulic system connected between the second hydraulic chamber 26 of the M / C and the plurality of wheel brake cylinders 4c, 4d.

[0050] The master hydraulic cylinder M / C includes a first piston 22 and a second piston 23 that are slidably fitted into the hydraulic cylinder 21, and a first return spring 25 is disposed in a first hydraulic chamber 24 d...

no. 2 approach

[0074] exist Figure 4 A flowchart of a braking force generating method implemented by the braking force generating device 1 according to the second embodiment of the present invention is shown in . In the second embodiment, the braking force generator 1 of the first embodiment can also be used. Steps S1 to S3 and S8 in the second embodiment are the same as steps S1 to S3 and S8 in the first embodiment, and thus description thereof is omitted. In 2nd Embodiment, after step S3, it progresses to step S14.

[0075] In step S14 , the ECU 2 determines whether or not the waiting time for receiving the ON signal s5 measured by the timer 2 b has reached a predetermined time (limit time). When the ECU 2 receives the on signal s5 (the IG switch 5 is turned on) before the measured time has reached the time limit, it is deemed that the measured time has not reached the time limit (NO in step S14), and proceeds to step S7, and the ECU 2 The working state of the braking force generating ...

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Abstract

The present invention provides a braking force generating device (1) capable of preventing a change in braking force even when an ON signal of an IG switch (5) is not sent. The braking force generating device (1) includes: a hydraulic pressure generating mechanism (S / C), which is configured according to the ON state of the IG switch (5) of the vehicle (10) or the opening and closing of the opening and closing body (6) of the vehicle (10). Action to become the working state, and generate the braking force corresponding to the electric signal based on the driver's operation amount; and the conditional stop mechanism (2a), which is generated from the hydraulic pressure according to the opening and closing action of the opening and closing body (6). When the mechanism (S / C) becomes active and the IG switch (5) is turned off for a predetermined period of time, the hydraulic pressure generating mechanism (S / C) is brought into a stop state, and if it is judged that it cannot If the ON state of the IG switch (5) is obtained, the conditional stop mechanism (2a) will make the hydraulic pressure generating mechanism (S / C) stop working even if the opening and closing action of the switch body (6) is obtained.

Description

technical field [0001] The present invention relates to a braking force generating device that generates braking force corresponding to an electric signal based on a driver's operation amount. Background technique [0002] According to the braking force generating device, a so-called brake-by-wire (BBW) system can be realized without causing the force generated by the driver to directly act as the braking force of the vehicle (for example, refer to Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 4801823 [0006] The problem to be solved by the invention [0007] Usually, when the ignition (IG) switch is turned on to start the vehicle, the driver performs the above operation while depressing the brake pedal. Then, when the IG switch is turned on, there is a case where the reaction force of the depressed brake pedal temporarily decreases. This is because the braking force generating device is acti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/40
CPCB60T7/042B60T13/142B60T13/662B60T13/745B60T8/4081B60T2270/404B60T2270/82B60T7/12
Inventor 伊藤雄贵
Owner HONDA MOTOR CO LTD
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