Improved Design And Realization Of Automobile Air Conditioning Test Bench

The automobile air conditioning system is an important part of the automobile,and the use frequency is high.In order to construct and use and fault diagnosis to enable students to better grasp the development of automotive air conditioning,an important aids air-conditioning test-bed this professional car,to improve the level of teaching is of great significance to practice in the condition of the equipment to improve the higher education,higher vocational education,vocational education.Therefore,this paper will improve the design of the automobile air conditioning test platform,and explain the specific circumstances of its application to the actual teaching process.This paper comprehensively introduces the application,existing problems and development trend of teaching aids for automotive specialty both at home and abroad.Through market investigation,combined with the original experimental platform for improved design,will be developed the experimental platform applied to the course of "automobile air conditioning detection and maintenance",and the test results are studied and analyzed,laid the foundation for the further improvement of the experiment platform.First of all,making the Volkswagen New Jetta car air conditioning test bench design and.The compressor,the condenser,evaporator,blower system,expansion valve and other components are reliable and orderly arranged on the movable frame,circuit design of an experimental platform for internal control,determine the wiring scheme,to meet the design requirements of the system;the blower working indicator,compressor indicator,cooling fan working indicator is reasonable in the arrangement of test panel;LED display set foot outlet temperature sensor,outlet temperature sensor,temperature sensor,temperature of outlet throttle position sensor mode.Through the enterprise investigation,we collect common faults of the automotive air conditioning system,and set up the corresponding detection points on the circuit board of the air conditioner test bench.Students can connect the network to set up the fault points through the tablet computer,and modify the testing data.The common faults of automobile air conditioning system are analyzed and other faults of automobile air conditioning system which are not easy to be simulated on the experimental platform are supplemented.Based on a real case to exclude air conditioning system fault of automobile maintenance enterprises as the experimental platform for automotive air conditioning "and extend the course of the automobile air conditioning test and maintenance",through this case to prove the occupation education now truly professional education and job requirements corresponding to the professional course,occupation school learning skills and enterprise personnel requirements disconnect.Finally,after the completion of the design of the automobile air conditioning test bed,it has been tested in the two major classes of the automobile application and maintenance major in Jilin mechanical and electrical engineering school,as well as the whole vehicle and parts,which has achieved good results.The use of air conditioning test in the teaching process,not only can increase the students hands-on experiment,the students to master the process of fault diagnosis of automotive air conditioning has been significantly improved,but also can effectively stimulate students’ learning autonomy,training students to analyze and solve problems and troubleshooting skills,gained remarkable teaching effect of trial results obtained by teachers and students alike.At the same time,the author analyzes the application of the classroom teaching model of the automobile air conditioning test platform in the course of "automobile air conditioning testing and maintenance".The shortcomings of the test platform are understood,which lays the foundation for the adjustment of the actual teaching and the improvement of the equipment.