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Power matching control device, method, system and construction machinery

A technology for controlling equipment and construction machinery, which is applied in pump control, mechanical equipment, engine control, etc., and can solve the problem that the output power cannot match the load well

Active Publication Date: 2015-12-02
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the field, the working gear is selected by the operator, and the load varies widely, so there will inevitably be a problem that the output power cannot match the load well

Method used

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  • Power matching control device, method, system and construction machinery
  • Power matching control device, method, system and construction machinery
  • Power matching control device, method, system and construction machinery

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Embodiment Construction

[0019] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0020] Before introducing the technical solution of the present invention, the idea on which the present invention is based is firstly introduced.

[0021] The load rate of the engine refers to the ratio of the output torque of the engine at a certain speed to its rated torque at that speed, and it can also be expressed as the ratio of the engine's load absorption power at a certain speed to the rated power at that speed. The specific derivation process is as follows:

[0022] During the power transmission process of construction machinery, the output torque M of the engine e Roughly equal to the absorption torque M of the hydraulic pump b , the function expr...

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Abstract

The invention discloses power match control equipment, a power match control method, a power match control system and engineering machinery comprising the power match control system. The power match control equipment comprises a receiving device for receiving the load rate of a motor, and a controller for adjusting the rotary speed of the motor or the discharge of a hydraulic pump according to the load rate of the motor so as to enable the load rate of the motor to be positioned between the upper limit allowable load rate and the lower limit allowable load rate of the motor, wherein the motor drives the hydraulic pump to work. Through the technical scheme, as the load rate can comprehensively reflect the load change of the motor, the load of the motor can be accurately positioned between the upper limit allowable load rate and the lower limit allowable load rate of the motor by performing power match control according to the load rate, and the efficiency and the stability of the motor can be improved.

Description

technical field [0001] The present invention relates to the field of construction machinery, in particular to a power matching control device, method, system and construction machinery including the system. Background technique [0002] In the prior art, construction machinery absorbs the output power of the engine through a hydraulic pump and provides it to the hydraulic system for operation. The power control of construction machinery is based on the speed-power characteristic data of the chassis engine to set multiple speeds, that is, working gears, and output different powers to meet the needs of different working conditions. However, in the field, the working gear is selected by the operator, and the load varies widely, so there will inevitably be a problem that the output power cannot match the load well. Contents of the invention [0003] The purpose of the present invention is to provide a power matching control device, method, system and engineering machinery inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D29/04F04B49/06F02B63/06
Inventor 王帅李葵芳罗建利李志杰
Owner ZOOMLION HEAVY IND CO LTD
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