Title:
POSITIVE FLOW EXCAVATOR AND CONTROL METHOD AND CONTROL DEVICE THEREFOR, AND CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2024/000942
Kind Code:
A1
Abstract:
Embodiments of the present application provide a positive flow excavator and a control method and control device therefor, and a controller. The control method for the positive flow excavator comprises: obtaining a pilot pressure of a control mechanism; determining an action type of the positive flow excavator according to the pilot pressure; determining a first preset power proportion of a first main pump and a second preset power proportion of a second main pump according to the action type, wherein the sum of the first preset power proportion and the second preset power proportion is 100%; respectively determining a first control current of a first main pump electromagnetic valve and a second control current of a second main pump electromagnetic valve according to the first preset power proportion and the second preset power proportion; and respectively outputting the first control current and the second control current to the first main pump electromagnetic valve and the second main pump electromagnetic valve, so as to control the output power of the first main pump and the output power of the second main pump. According to the embodiments of the present application, the throttling loss can be avoided, the controllability is ensured, and both the fuel economy and operation efficiency are achieved.
Inventors:
GAO JIANCHANG (CN)
YUAN YE (CN)
WU YUANFENG (CN)
WEI XUEPING (CN)
YUE BAOGEN (CN)
DI XIANG (CN)
YUAN YE (CN)
WU YUANFENG (CN)
WEI XUEPING (CN)
YUE BAOGEN (CN)
DI XIANG (CN)
Application Number:
PCT/CN2022/126656
Publication Date:
January 04, 2024
Filing Date:
October 21, 2022
Export Citation:
Assignee:
ZOOMLION EARTHMOVING MACHINERY CO LTD (CN)
ZOOMLION SHAANXI WESTERN EARTHMOVING MACHINERY CO LTD (CN)
ZOOMLION SHAANXI WESTERN EARTHMOVING MACHINERY CO LTD (CN)
International Classes:
E02F3/28; E02F1/00; E02F3/36; E02F3/40; E02F3/42; E02F9/20
Foreign References:
| CN115030249A | 2022-09-09 | |||
| CN106869223A | 2017-06-20 | |||
| CN111148906A | 2020-05-12 | |||
| CN104480991A | 2015-04-01 | |||
| CN102758464A | 2012-10-31 | |||
| JP2015036495A | 2015-02-23 | |||
| US5361211A | 1994-11-01 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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