Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A method for controlling an electronic expansion valve of an automobile air-conditioning system

An automotive air-conditioning system and electronic expansion valve technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the operation failure of electronic expansion valve and propose a treatment plan, motor overheating or overcurrent, affecting the energy-saving control accuracy of the air-conditioning system, etc. It can avoid the damage of refrigeration system equipment, avoid over-frequency action, and improve safety and reliability.

Active Publication Date: 2016-08-31
SHAOXING SANHUA NEW ENERGY AUTOMOTIVE COMPONENTS CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the existing electronic expansion valve control methods for automotive air-conditioning systems has proposed a solution for the operation failure of the electronic expansion valve.
[0005] As we all know, due to the influence of its own structure and application environment, the electronic expansion valve may fail. It is a key stage of energy consumption adjustment, which directly affects the energy-saving control accuracy of the air conditioning system

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 method for controlling an electronic expansion valve of an automobile air-conditioning system
  • A method for controlling an electronic expansion valve of an automobile air-conditioning system
  • A method for controlling an electronic expansion valve of an automobile air-conditioning system

Examples

Experimental program
Comparison scheme
Effect test

no. 4 example

[0072] Compared with the fourth embodiment, this solution has made two optimizations.

[0073] First, step S02 is executed before step S41: on the condition that the rotation speed of the compressor is maintained within the corresponding operation interval for a second length of time, step S41 is executed to determine the opening of the electronic expansion valve according to the rotation speed of the compressor. Preset amount s 0 .

[0074] As mentioned above, the rotation speed of the compressor may change at any time due to some reason. In order to avoid too fast action of the expansion valve, resulting in too frequent control and too large fluctuation of the low pressure of the system, therefore, compared with the first embodiment, this The added step S02 of the plan can avoid the fluctuation of the compressor speed causing the electronic expansion valve to operate frequently and make the system fluctuate too much, thereby effectively improving the energy efficiency of th...

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 control method of an electronic expansion valve of an automobile air conditioner system. The method includes acquiring a result of the judgment of whether the electronic expansion valve is currently in the fault state or not according to the acquired current openness, actual overheat degree Tsh and preset overheat threshold Tsh_set of the electronic expansion valve while conducting overheating degree control and outputting a control signal to an execution mechanism according to the result of the judgment. By means of the control method, effective fault diagnosis can be conducted on the electronic expansion valve in real time. When the overheat degree is mistakenly controlled, the control signal is output to the execution mechanism to stop work of the system by controlling a compressor to shut down and / or remind operators to conduct fault overhauling by controlling a fault indicator lamp to be turned on, so that accidents of refrigeration system device damage caused by mistaken control can be completely avoided, and system running safety and reliability can be improved.

Description

technical field [0001] The invention relates to refrigeration control technology, in particular to a method for controlling an electronic expansion valve of an automobile air-conditioning system. Background technique [0002] As we all know, in the automobile system, the automobile air conditioner is the main energy consumption unit. With the improvement of the energy saving requirements of the whole vehicle, the energy saving of the automobile air conditioner is also gradually proposed. Especially in electric vehicle systems, the cruising range of the car is limited due to the limited capacity of the battery. Therefore, the energy saving of electric vehicle air conditioners is particularly important. [0003] In the automotive air-conditioning system, the key to energy saving of the system is to effectively control the flow of refrigerant in the system so that the system can play the best performance. Specific to electric vehicle air conditioners, since the compressor can...

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): F25B49/02
Inventor 爱德文·约翰·斯坦科张荣荣张峻
Owner SHAOXING SANHUA NEW ENERGY AUTOMOTIVE COMPONENTS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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