Excavator control method and excavator

A control method and excavator technology, applied in engine control, electrical control, machine/engine, etc., can solve problems such as low work efficiency, delayed response action, high fuel consumption, etc., and achieve improved driving experience, stable and smooth operation, and improved The effect of response speed and motor coordination

Active Publication Date: 2022-04-01
LIUZHOU LIUGONG EXCAVATORS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in actual application, it is found that the load sensing system adjusts the displacement of the hydraulic pump according to the pressure of the hydraulic system, which has the problems of delayed response, low work efficiency and high fuel consumption

Method used

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  • Excavator control method and excavator
  • Excavator control method and excavator
  • Excavator control method and excavator

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Experimental program
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Effect test

Embodiment 2

[0076] The difference between the embodiment and the embodiment is, such as figure 2 As shown, the difference between the current power of the engine and the engine demand power is not in the preset difference range, and when the engine demand power exceeds the engine power threshold, the current operation of the excavator is obtained according to the engine speed, and the current job of the excavator is acquired while the engine speed is adjusted. Mode, switch the excavator's job mode to the target job mode.

[0077] The above objective operation mode is a job mode that is not exceeding the engine power threshold and the gear position difference with the current job mode.

[0078] Specifically, such as image 3 As shown, the target job mode is obtained as follows:

[0079] S110, get the current operating mode of the hydraulic system;

[0080] S120, determine if the current job mode is a job mode of the minimum gear position. If so, the demand power of the engine exceeds the prompt...

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Abstract

The invention relates to the field of engineering vehicles, and discloses an excavator control method and an excavator. The control method comprises the steps that the load power of an excavator hydraulic system is calculated, and engine demand power is calculated according to the load power; according to the mapping relation between the engine rotating speed and the engine power, the engine rotating speed corresponding to the engine demand power is inquired, and the engine rotating speed is adjusted to the inquired engine rotating speed; according to the mapping relation between the operation mode of the excavator and the set flow of the hydraulic system, the set flow corresponding to the current operation mode is inquired; and the displacement of the hydraulic pump is calculated according to the inquired rotating speed of the engine and the set flow, and the displacement of the hydraulic pump is adjusted to the calculated displacement of the hydraulic pump. The displacement of the hydraulic pump and the power of the engine are dynamically matched, the rotating speed of the engine is self-adaptively adjusted according to the load, the displacement of the hydraulic pump is self-adaptively adjusted according to the adjusted rotating speed of the engine, and the action coordination and smoothness in the operation process of the excavator are improved.

Description

Technical field [0001] The present invention relates to the field of engineering vehicles, and more particularly to an excavator control method and an excavator. Background technique [0002] The existing excavator is multi-load-sensitive system, which can adjust the displacement of the hydraulic pump according to the pressure of the hydraulic system to meet the demand for traffic on the traffic. [0003] However, when the actual application, the load-sensitive system regulates the displacement of the hydraulic pump according to the pressure of the hydraulic system, and has a problem of delay in response, low operating efficiency, and high fuel consumption. Inventive content [0004] It is an object of the present invention to provide an excavator control method and an excavator capable of improving operation coordination and fluidity, reducing fuel consumption. [0005] In order to reach this, the present invention adopts the following technical solutions: [0006] An excavator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/04F02D41/00E02F9/22
Inventor 洑平
Owner LIUZHOU LIUGONG EXCAVATORS
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