Title:
AUTOMATIC PRESSURE-REGULATING VALVE SUITABLE FOR MULTI-LEVEL DRIVING AUTOMATION OF COMMERCIAL VEHICLE, AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/000363
Kind Code:
A1
Abstract:
An automatic pressure-regulating valve suitable for multi-level driving automation of a commercial vehicle, and a control method therefor. The automatic pressure-regulating valve comprises an upper valve body, a lower valve body, a piston (3), a main valve element assembly, a switching valve (17), a high-speed air intake valve (18) and a high-speed exhaust valve (19), wherein the switching valve (17), the high-speed air intake valve (18) and the high-speed exhaust valve (19) are all mounted at an upper end of the upper valve body; the piston (3) is located in a cavity formed by the upper valve body and the lower valve body, and divides the cavity into a control cavity at an upper portion and a lower cavity at a lower portion; and the main valve element assembly is mounted on the lower valve body. The automatic pressure-regulating valve and the control method are suitable for a commercial vehicle with a multi-level driving automation function, and can be used in a commercial vehicle air-pressure braking system with multi-level driving automation functions, such as manual control braking, electric control braking, electric control to manual control, and manual control to electric control braking; the pressure of a brake chamber can be rapidly, accurately and independently adjusted automatically in real time; a transmission time delay of the air pressure brake system is shortened; the reliability of the air pressure brake system is improved; manual control braking can still be guaranteed when an electric control failure fault, such as power failure, occurs in the system; and normal running of a vehicle is maintained.
Inventors:
LI GANGYAN (CN)
BAO HANWEI (CN)
HU JIAN (CN)
YANG FAN (CN)
WANG ZAIYU (CN)
BAO HANWEI (CN)
HU JIAN (CN)
YANG FAN (CN)
WANG ZAIYU (CN)
Application Number:
PCT/CN2021/109032
Publication Date:
January 26, 2023
Filing Date:
July 28, 2021
Export Citation:
Assignee:
UNIV WUHAN TECH (CN)
International Classes:
B60T15/02; B60T13/68; B60T15/18
Foreign References:
| CN113460015A | 2021-10-01 | |||
| CN210106460U | 2020-02-21 | |||
| CN109733364A | 2019-05-10 | |||
| CN108883759A | 2018-11-23 | |||
| CN210978304U | 2020-07-10 | |||
| CN101312864A | 2008-11-26 | |||
| CN109823331A | 2019-05-31 | |||
| US3944294A | 1976-03-16 |
Attorney, Agent or Firm:
WUHAN ZHICHANSHIDAI INTELLECTUAL MPROPERTY CO., LTD (CN)
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