Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A speed control method of construction machinery engine

A technology for engine controllers and construction machinery, applied in engine control, machines/engines, combustion engines, etc., can solve problems such as large fluctuations in engine speed, poor action coordination, and poor dynamic response, so as to improve operation coordination , Renovation cost is low, and the effect of saving fuel costs

Inactive Publication Date: 2016-03-02
SHANGHAI SANY HEAVY IND
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing non-electrically controlled engine control, the throttle motor is used to drive the engine fuel supply rod to adjust the engine speed. The control method cannot be changed, and only constant throttle control can be realized.
[0005] In the existing technology, due to the unique combustion characteristics and air intake control method of the gas engine, the dynamic response is worse than that of the diesel engine, that is, when the load changes suddenly, the engine speed fluctuates greatly
[0006] In addition, because the load of the excavator often changes suddenly during the operation process, resulting in large fluctuations in speed and poor coordination of actions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A speed control method of construction machinery engine
  • A speed control method of construction machinery engine
  • A speed control method of construction machinery engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0030] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] Embodiments of the present invention will be specifically explained below in conjunction with the accompanying drawings.

[0032] figure 1 It is the schematic diagram of electronically controlled engine control. The main controller (MC) 1 collects the output load rate of the gas engine 3 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for controlling the revolving speed of engineering mechanical engines and belongs to the field of mechanical control. The method comprises the steps that by judging load increase which is smaller than or equal to the range of 50-70%, a main controller 1 sends a constant revolving speed control method to an engine controller 2, and a gas engine 3 keeps the revolving speed unchanged; if the load does not increase or increase larger than the range of 50-70%, the main controller 1 sends a constant throttle control method to the engine controller 2, and the revolving speed of the gas engine 3 decreases according to a speed regulation curve. According to the method, different control methods are adopted according to hydraulic load changes, overlarge speed decrease of loading is prevented, overlarge speed increase of unloading is prevented, stationarity of the revolving speed of an excavator during the whole operation is ensured, and therefore, operation coordination of the integral machine is ensured.

Description

technical field [0001] The invention belongs to the field of mechanical equipment control, and relates to a control method, in particular to a speed control method suitable for construction machinery engines of excavators. Background technique [0002] In recent years, with the increasing requirements for environmental protection and energy saving, gas fuel engines have been re-emphasized and developed, especially for vehicles fueled by compressed natural gas (CNG), liquefied natural gas (LNG) and liquefied petroleum gas (LPG). Countries all over the world have been promoted very quickly, and also promoted the progress of gas fuel engine technology. Studies have shown that the emissions of CO, CO2, PM (soot particles) and NMHC (unburned hydrocarbons other than methane) produced by gaseous fuel engines have been greatly reduced, and NOx has also been improved to varying degrees (depending on the differences of different engines, the mixture The quality of the gas formed, the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/00E02F9/20E02F9/22
CPCY02T10/12
Inventor 曹东辉陈克雷石向星
Owner SHANGHAI SANY HEAVY IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com