Skip to main content

Analysis of the Influence of Engine Speed ​​in Automobile Air Conditioner

 

The car air conditioner controller should be able to control the evaporating temperature, superheat, compressor speed, electronic expansion valve opening, evaporator fan speed and car interior temperature at the same time according to certain performance indicators. Unlike household air conditioners, the speed of the car air conditioner compressor changes with the speed of the car engine.

The cooling capacity of the car air conditioner is greatly affected by the engine speed. Therefore, the car air conditioning control system is a multivariable control system. The coupling relationship of various control parameters affects the quality of the car air conditioning control system. Therefore, it is very important to design a controller with a simple precompensator to decouple the coupling system of the car air conditioner.

Air conditioning system is mainly composed of compressor accumulator, expansion valve and other equipment. In the traditional semi-mechanical control system, the constant-capacity compressor controls the start and stop of the compressor through the electromagnetic clutch according to the evaporation temperature, and the thermal expansion valve reduces the pressure of the high-pressure liquid refrigerant to the evaporation pressure, so that it can be vaporized and absorbed in the evaporator. Heat, and it can also control the flow in the evaporator.

Traditional fixed-capacity compressors and expansion valves can no longer meet the requirements of high-efficiency and energy-saving automatic control. Therefore, it is necessary to study the control system of car air-conditioning with a new actuator. It adopts a multi-variable control strategy, and uses a variable speed compressor and an electronic expansion valve to comprehensively control the evaporation pressure and superheat.

In the experiment, a variable-speed compressor was simulated by a constant-capacity compressor driven by an AC motor, and an electronic expansion valve driven by a stepping motor was used for the experiment.

The automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

Link to this article：Analysis of the Influence of Engine Speed ​​in Automobile Air Conditioner

Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting.：Cnc Machining，Thank

Comments

Post a Comment

Popular posts from this blog

Drive the preferential presetting of the spring frame of the vehicle

The secondary spring system of the original electric locomotive consists of 4 sets of the same ordinary cylindrical compression springs. Its parameters are: spring material diameter d=48mm, maximum working circle diameter D=230mm, effective working circle number n=6.6, free height H0= 528mm, working height H=431mm. The characteristic curve of the spring is approximately straight, with stable stiffness and simple structure. However, the spring stiffness is mainly along the axial direction, and its transverse shear and bending stiffness is very poor, and its anti-resonance ability is poor. After the train speeds up, its snake-like movement and shaking phenomenon intensify. Therefore, it is necessary to improve the spring system of electric locomotives. Improvement of the spring system. The improved spring parameters and characteristics take into account the special position of the secondary spring (between the bogie and the car body) and specific functions (s...
Post a Comment
Read more

How are the CNC Machining Manufacturers in Shenzhen? China Hardware Has Carried out Comprehensive Comparison with Multiple Dimensions in Various Regions

Keywords: Cnc Machining manufacturers,CNC Machining,How about Shenzhen CNC Machining manufacturers I'm not afraid of the quality of the product, I'm afraid to shop around. There is no contrast and no injury, this has been known to everyone since ancient times. For example, Shenzhen CNC Machining manufacturers, if you can find more Shenzhen CNC Machining manufacturers to compare their products, and compare the strengths of Shenzhen CNC Machining manufacturers, you will find that what you see with the naked eye is not all right, there may be some Unidentified objects participate in it, how do you compare them, and what aspects should you start with? Let's see how you do it. Everyone says to shop around. So, what is the comparison? Here is an explanation. Duowei Shenzhen is looking for suitable Shenzhen manufacturers for CNC Machining: 1. There are various qualification certificates: such as: business license, ISO, equipment distribution, enviro...
Post a Comment
Read more

Hitachi LM213XB

# LM213XB Hitachi LM213XB New LM213XB KOE 5.8inch Panel 256×64 Monochrome B/L CPU, LM213XB pictures, LM213XB price, #LM213XB supplier ------------------------------------------------------------------- Email: sales@shunlongwei.com https://www.slw-ele.com/lm213xb.html ------------------------------------------------------------------- Panel Brand : HITACHI Panel Model : LM213XB Panel Type : STN- LCD , Panel  Panel Size : 5.8 inch Resolution : 256×64   Display Mode : STN, Yellow/Green (Positive), Reflective  Active Area : 143.31×35.79 mm Outline : 184×75×12 mm Display Colors : Monochrome     Signal Interface : 8-bit parallel , 20 pins   Input Voltage : 5.0V (Typ.)  ...
Post a Comment
Read more