Title:
CONTROL METHOD FOR HYDRAULIC RETARDER, AND CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/016807
Kind Code:
A1
Abstract:
A control method for a hydraulic retarder and a control system. The control method comprises: acquiring a gradient of a slope of a downhill road segment ahead of a vehicle; determining whether the absolute value of the gradient of the slope of the downhill road segment ahead of the vehicle is greater than the absolute value of the gradient of a slope for which a braking force is not required; if so, predicting a required braking force for the vehicle to travel, at a steady vehicle speed, on the slope of the downhill road segment ahead of the vehicle, and an oil amount required for the braking force; predicting a corresponding oil filling time according to the required oil amount; predicting, according to the oil filling time, the distance between the vehicle and a start point on the downhill road segment ahead at the start time of oil filling of the hydraulic retarder; when the actual distance between the vehicle and the start point on the downhill road segment ahead is equal to the predicted distance, controlling the hydraulic retarder to start oil filling; and upon the vehicle reaching the start point on the downhill road segment ahead, controlling the hydraulic retarder to start braking. The control method for a hydraulic retarder and the control system start oil filling of a hydraulic retarder before reaching a downhill position, and start the braking of the hydraulic retarder upon reaching the downhill position, thereby lowering the wear of brake pads, and reducing the waste of vehicle running costs.
Inventors:
TU YANKAI (CN)
CHEN YUAN (CN)
CHEN YUAN (CN)
Application Number:
PCT/CN2020/139955
Publication Date:
January 27, 2022
Filing Date:
December 28, 2020
Export Citation:
Assignee:
XIAMEN YAXON NETWORK CO LTD (CN)
International Classes:
F16D57/00; B60T10/00
Domestic Patent References:
| WO2019209158A1 | 2019-10-31 |
Foreign References:
| CN105752062A | 2016-07-13 | |||
| CN102666233A | 2012-09-12 | |||
| CN104773151A | 2015-07-15 | |||
| CN106994966A | 2017-08-01 | |||
| CN105008187A | 2015-10-28 | |||
| CN201510321728A | 2015-06-12 |
Attorney, Agent or Firm:
SHOUCHUANG JUNHE PATENT AGENT CO., LTD. XIAMEN (CN)
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