Title:
CONTROL METHOD FOR POWER SYSTEM, CONTROL SYSTEM, AND CONSTRUCTION MACHINERY
Document Type and Number:
WIPO Patent Application WO/2020/119085
Kind Code:
A1
Abstract:
A control method for a power system, comprising acquiring a first flow rate of a fuel pump (S102); controlling an engine to run at a first rotational speed which matches the first flow rate (S104); acquiring the load torque of the engine as well as the maximum torque of the engine at the first rotational speed, and comparing the load torque and the maximum torque (S106); and adjusting the rotational speed of the engine on the basis of the comparison result (S108). The described control method allows the engine to work within an economical, fuel-saving, low-noise area so as to effectively reduce energy consumption for the whole machine. Also disclosed are a control system and construction machinery.
Inventors:
ZHANG QIJUN (CN)
WANG GUANGLEI (CN)
LI JIARONG (CN)
WANG GUANGLEI (CN)
LI JIARONG (CN)
Application Number:
PCT/CN2019/093898
Publication Date:
June 18, 2020
Filing Date:
June 28, 2019
Export Citation:
Assignee:
SANY AUTOMOBILE MFG CO LTD (CN)
International Classes:
F04B49/20
Foreign References:
| CN109404146A | 2019-03-01 | |||
| CN103062027A | 2013-04-24 | |||
| CN107489601A | 2017-12-19 | |||
| CN104481712A | 2015-04-01 | |||
| CN106368829A | 2017-02-01 | |||
| DE102014224723A1 | 2015-07-02 |
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
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