PLC Controlled, Automotive Gear Shifting Mechanism英文书.pdf

Research Journal of Applied Sciences, Engineering and Technology 2(3): 245-251, 2010 ISSN: 2040-7467 ? M axwell Scientific Organization, 2010 Submitted Date: March 10, 2010 Accepted Date: March 30, 2010 Published Date: May 10, 2010 Pneumatic, PLC Controlled, Automotive Gear Shifting Mechanism Muntaser Momani, Mohammed Abuzalata, Igried Al-Khawaldeh and Hisham Al-M ujafet Department of Mechanical Engineering, Faculty of Engineering Technology, Al-Balqa’ Applied University, Amman, P.O. Box 150 08, 11134, Jordan Abstract: In this study, a gear shifting m echa nism was desig ned and applied to make the shifting process faster and less destructible for the driver. The new device must be reliable, has a small dimensions, low construction and maintenan ce cost. This paper aims to improve gear shifting process using devices as: a manual four speed gear box, four pneumatic double acting cylinders, four pneumatic two position five ways directional control valves, Programm able Logic Controller (PLC) LOG O unit, an electrical motor, an electrical clutch, a belt, two pulleys, limit switches, push buttons, bulbs, a table (holder) and pow er supply. A ccording to su ggested g ear_ shifting method the driver can select the transmission gear ratio without moving his hands from the steering wheel by putting the gear shifting push buttons on the steering wheel. Using this method leaves to the driver the excitement of choosing the shifting moment. Key words: Directional control valve, gearbox, gear shifting m echa nism, pneu matic cylinder, Prog ramm able Logic Controller (PLC), solenoid valve I N TR O D U C T IO N This study describes in detail in an understandable way to how to convert the traditional manually gear shifting mechanism to a sem i-automated gear shifting mechanism by using the Programm able L ogic Controller (PLC). Increasing demands on performance, quality and cost are the main challenge for todays automotive industry, in an environment where every movement, component