AT6501 - AUTOMOTIVE TRANSMISSION (Syllabus) 2013-regulation Anna University

AT6501 - AUTOMOTIVE TRANSMISSION (Syllabus) 2013-regulation Anna University

AT6501

AUTOMOTIVE TRANSMISSION

 LPTC
3003

OBJECTIVES:
• To know about the various transmission and drine line units of automobiles.

UNIT I

CLUTCH AND GEAR BOX

9
Requirement of transmission system, Different types of clutches, principle & Construction of Single plate coil spring and Diaphragm spring clutches., Need and Objectives of Gear box. Construction and operation of Sliding mesh, Constant mesh and Synchromesh gearboxes. – Determination of gear ratios for vehicles. Performance characteristics in different speeds. Problems on performance of automobile such as Resistance to motion, Tractive effort, Engine speed & Power and acceleration.

UNIT II

HYDRODYNAMIC TRANSMISSION

9
Fluid coupling-Principle-Constructional details. Torque capacity. Performance characteristics. Reduction of drag torque in fluid coupling. Torque converter-Principle-constructional details, performance characteristics. Multistage torque converters and Polyphase torque converters.


UNIT III

EPICYCLIC GEARBOXES USED IN AUTOMATIC TRANSMISSION

9
Principle of Planetary gear trains - Wilson Gear box, Cotal electromagnetic transmission- Hydraulic control system for Automatic Transmission.

UNIT IV

AUTOMATIC TRANSMISSION APPLICATIONS

9
Need for automatic transmission, Four speed longitudinally mounted automatic transmission - Chevrolet “Turboglide” Transmission, Continuously Variable Transmission (CVT) – Types – Operations of a typical CVT.

UNIT V

HYDROSTATIC AND ELECTRIC DRIVE

9
Hydrostatic drive; Various types of hydrostatic systems – Principles of Hydrostatic drive system. Advantages and limitations. Comparison of hydrostatic drive with hydrodynamic drive, construction and working of typical Janny hydrostatic drive. Electric drive-types- Principle of early and modified Ward Leonard Control system-Advantages & limitations.

TOTAL : 45 PERIODS

OUTCOMES:
• The students will understand the constructional, working principle of various types of manual and automotive transmission of an automobile.

TEXT BOOKS:
1. Heldt, P.M., "Torque converters", Chilton Book Co., 1962.
2. Newton and Steeds, "Motor vehicles", Illiffe Publishers, 1985.
3. Devaradjane. Dr. G., Kumaresan. Dr. M., "Automobile Engineering", AMK Publishers, 2013.

REFERENCES
1. SAE Transactions 900550 & 930910.
2. Hydrostatic transmissions for vehicle applications, I Mech E Conference, 1981-88.
3. Crouse,W.H., Anglin,D.L.," Automotive Transmission and Power Trains construction", McGraw Hill, 1976.
4. Heinz Heisler, "Advance vehicle Technology", Butterworth-Heinemann, 2002
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