Study On The Control System Of The Automatic Mechanical Transmission

Automatic Mechanical Transmission as so called AMT, accomplished automatic gearshift based on manual fixed-shaft and dry clutch, which takes ECU as kernel, and then uses electrical and pneumatic system to control clutch and gearshift by adopting electronics technique and automatic gearshift theory. As far as the condition of our country, AMT is easy to be accepted by manufacturer due to good inheritance, few expenses for reforming and high performance price ratio. Therefore it has a wide potential to develop. This article introduces the history,actuality and development trend of the automatic transmission. Focused on gearbox CA5-75 K65, we betterment primary transmission by manual gear-shift replace with pneumatic gear-shift, including the shift parts and clutch executors. Through the research of clutch engagement,shifting process and influence during the bus driving, two parameters electrical control system based on speed and pedal are introduced, including the clutch control,shifted gears control and the electrically controlled software,hardware system and so on.