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Engine rotating speed stabilizing method and device and operation machine

A technology of engine speed and stabilization method, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problems of stable lag and cumbersome rotation speed, and achieve the effect of avoiding abnormal fluctuation, accurate and stable, and realizing normal operation.

Pending Publication Date: 2021-12-24
SHANGHAI HUAXING DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing engine speed control method is relatively cumbersome, and there is a lag in the stability of the speed

Method used

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  • Engine rotating speed stabilizing method and device and operation machine
  • Engine rotating speed stabilizing method and device and operation machine
  • Engine rotating speed stabilizing method and device and operation machine

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] It should be noted that the method for stabilizing the engine speed provided by the present invention can be used to control the engine speed of an operation machine equipped with a hydraulic system, and is especially suitable for controlling the engine speed of the above-mentioned work machine when the load of the above-mentioned work machine suddenly changes. Rotating speed.

[0036...

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Abstract

The invention provides an engine rotating speed stabilizing method and device and an operation machine. The method comprises the steps that pilot pressure of a hydraulic main valve of a target operation machine at the current moment and the actual rotating speed of an engine of the target operation machine are obtained; based on the pilot pressure, the actual rotating speed and the predetermined target rotating speed of the engine, the target torque of the engine at the next moment is obtained; and based on the target torque, the first rotating speed deviation between the actual rotating speed of the engine at the next moment and the actual rotating speed at the current moment is controlled to be smaller than a deviation threshold value. According to the engine rotating speed stabilizing method and device and the operation machine, under the condition that the load pressure value of a hydraulic system of the operation machine does not need to be obtained, linkage hydraulic control and engine control can stabilize the rotating speed of the engine more simply, efficiently and accurately, under the condition that the load of the operation machine changes suddenly, abnormal fluctuation of the rotating speed of the engine is avoided, and normal operation of the operation machine in a complex operation environment and a complex working condition can be achieved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a method and device for stabilizing the rotational speed of an engine and an operating machine. Background technique [0002] Working machines equipped with hydraulic systems are widely used in infrastructure construction such as cities, transportation, water conservancy, mines and rivers. However, when the operating environment where the operating machine is located is harsh and the working conditions are complex and changeable, the load of the operating machine is prone to sudden changes, which will cause large fluctuations in the rotational speed of the engine. If the speed of the engine cannot be controlled in time to stabilize the speed of the engine, the speed may drop or even stall, which will affect the normal operation of the operating machinery. [0003] In the prior art, the pressure sensor can collect the load pressure value of the hydraulic system of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/00F02D45/00
CPCF02D29/00F02D31/001F02D2200/1002F02D2200/101
Inventor 吴小忠高永红孙哲浩
Owner SHANGHAI HUAXING DIGITAL TECH
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