Abstract
Automotive air conditioning system is the realization to the inside of the train air for
refrigeration, heating, ventilation and air purification devices. It can provide comfortable
for a ride by bus driver of the environment， reduces the fatigue strength, improve the
driving safety. Air conditioning unit has become a car is all ready function to measure one
of the marks.
The role of automotive air conditioning is well known. Automotive air conditioning
unit is no longer a luxury， not only the symbol of cars， buses, trucks, the air
conditioning engineering installation of air-conditioning equipment in the car. People of the
air conditioning needs more and more urgent, to the requirements of the quality of the
automotive air conditioning more and more is also high.
In recent years， the domestic highway, especially a new highway rapid development,
effectively drive the highway passenger transport business， especially the rapid
development of high speed passenger transport business。 At the same time, with the
surface of the earth is warming and the improvement of people's living standard， promote
the city bus began to USES air conditioning coaches， the two factors of air conditioner
fuelled by the demand for passenger cars. Due to the passenger cars were largely developed
by the domestic, and the air conditioning system should be domestic car factory and air
conditioner factory to design, form a complete set， so the car manufacturers, air
conditioner manufacturers and the urgent need to understand automobile air conditioner pit
on the knowledge of air conditioning。
Along with the development and popularization of automotive air conditioner, air
condition in the development through five stages: a single heating stage, a single air
conditioning phase, the changes in temperature and integration phase， automatic control
stage， computer control stage. Air conditioning control method also after from simple to
complex, from simple to complex in the process, as the air conditioning system of the car
circuit control are constantly updated improvement。
Keywords: Automotive air conditioning Fault Diagnosis Maintenance Note
