manual transmission in automobile

1. Manual Transmission System
SIR C.R REDDY COLLEGE OF
ENGINEERING, ELURU
K.S. Saran Kumar
(315277133004)
M.E (Machine Design)

2. Contents
• Introduction
• Types of Transmission
• Types of Gear Box
• Fabrication
• Working
• Conclusion

3. Introduction
The word ‘Transmission’ means the
whole of the mechanism that transmits the
power from the engine crankshaft to the rear
wheels, providing the suitable variations of the
engine torque at the road wheels, whenever
required.

4. Transmission...

5. Types of Transmission
• Manual transmission
• Fully automatic Transmission
• Semi-Automatic Transmission

6. Manual Transmission
Components:
– Clutch
– Gearbox
– Differential

8. Gear Ratio
• It is the ratio of the no. of teeth on the driver wheel to
no. of teeth on the driven wheel or the speed of
rotation of the driver to the driven .
For example:
Gear ratio,
G=(10/20) = 1:2
(smaller gear is the driven)
20
Teeth
10 Teeth

9. Gear Box...

10. Types of Gearbox
• Constant mesh type (Manual)
• Synchromesh type (Brass ring)
• Sliding mesh type (Automatic)

11. Constant Mesh Type

13. Cross- Sectional view

14. Dog Gear

15. Synchromesh type
Gearbox
Synchro collar

18. First Gear

20. Second Gear

22. Third Gear

24. Fourth Gear

26. Reverse Gear

29. Conclusion
Now a days , By using the Brass synchronised
ring the wearing effect in transmission is reduced.

30. QUERIES ???

31. Thank You...