IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0700936
(2007-02-01)
|
등록번호 |
US7887145
(2011-02-02)
|
우선권정보 |
JP-2006-006-054751(2006-03-01) |
발명자
/ 주소 |
- Niino, Hiroaki
- Sato, Takashi
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
6 |
초록
▼
In a vehicle brake control device, a target W/C pressure depending on an amount of operation performed to a brake operating member, exhibits hysteresis due to a forward mapping dataset and a backward mapping dataset. The vehicle brake control device selects the forward mapping dataset or the backwar
In a vehicle brake control device, a target W/C pressure depending on an amount of operation performed to a brake operating member, exhibits hysteresis due to a forward mapping dataset and a backward mapping dataset. The vehicle brake control device selects the forward mapping dataset or the backward mapping dataset based on the amount of operation performed to the brake operating member, and determines a current value of a current to be supplied to one of first to fourth linear valves. Therefore, it is possible to prevent a wheel cylinder pressure from changing too sensitively to the operation to the brake operating member and from changing even when the driver is not intentionally operating the brake operating member. This makes the driver experience an improved brake feeling.
대표청구항
▼
What is claimed is: 1. A vehicle brake control device, comprising:a brake operating member to be operated by a driver;an operation amount sensor for detecting an operation amount of the brake operating member;a first and a second front wheel cylinder, which are respectively installed to two front wh
What is claimed is: 1. A vehicle brake control device, comprising:a brake operating member to be operated by a driver;an operation amount sensor for detecting an operation amount of the brake operating member;a first and a second front wheel cylinder, which are respectively installed to two front wheels;a first and a second rear wheel cylinder, which are respectively installed to two rear wheels;a reservoir for storing brake fluid;a main conduit for connecting the first and second front wheel cylinders and the first and second rear wheel cylinders with the reservoir, the main conduit branching into four sections which are respectively connected with the first and second front wheel cylinders and the first and second rear wheel cylinders;a first pump located in a first one of the four sections, the first pump for pressurizing a first one of the first front wheel cylinder, the second front wheel cylinder, the first rear wheel cylinder, and the second rear wheel cylinder by drawing in and discharging the brake fluid stored in the reservoir;a second pump located in a second one of the four sections, the second pump for pressurizing a second one of the first front wheel cylinder, the second front wheel cylinder, the first rear wheel cylinder, and the second rear wheel cylinder by drawing in and discharging the brake fluid stored in the reservoir;a third pump located in a third one of the four sections, the third pump for pressurizing a third one of the first front wheel cylinder, the second front wheel cylinder, the first rear wheel cylinder, and the second rear wheel cylinder by drawing in and discharging the brake fluid stored in the reservoir;a fourth pump located in a fourth one of the four sections, the fourth pump for pressurizing a fourth one of the first front wheel cylinder, the second front wheel cylinder, the first rear wheel cylinder, and the second rear wheel cylinder by drawing in and discharging the brake fluid stored in the reservoir;a first motor for driving the first and second pumps which are provided to a first conduit system of the main conduit and pressurize the first conduit system;a second motor for driving the third and fourth pumps which are provided to a second conduit system of the main conduit and pressurize the second conduit system;first to fourth adjustment conduits, which are located respectively in parallel with the first to fourth pumps and return the brake fluid to the reservoir;first to fourth linear valves, which are respectively located in the first to fourth adjustment conduits; andcontrol means for controlling, based on a detection signal from the operation amount sensor, the first to fourth linear valves, the first motor, and the second motor,wherein the control means includes:a first storing portion for storing a forward mapping dataset and a backward mapping dataset each for indicating change of a wheel cylinder pressure generated at one of the first front wheel, the second front wheel, the first rear wheel, and the second rear wheel, the change being in accordance with the operation amount, wherein:the forward mapping dataset is for an operation increasing process in which the operation amount increases; andthe backward mapping dataset is for an operation decreasing process in which the operation amount decreases and exhibits hysteresis against the forward mapping dataset;a first selecting portion for selecting one of the forward mapping dataset and the backward mapping dataset based on the operation amount detected by the operation amount sensor;a pressure calculating portion for calculating, based on the selected one of the forward mapping dataset and the backward mapping dataset, a target wheel cylinder pressure corresponding to the detected operation amount; andan adjusting portion for adjusting, based on the calculated target wheel cylinder pressure, a current value of a current to be supplied to one of the first to fourth linear valves.
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