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Question

Difficulty: EasyClutches and Transmissions

In a manual transmission, which component is specifically designed to match the rotational speed of a gear with the output shaft to prevent gear grinding during shifts?

  1. A
    Differential gearset
  2. B
    Disc brake caliper
  3. Synchronizer assemblyAnswer
  4. D
    Hydraulic shock absorber

Answer

The synchronizer assembly matches the rotational speed of the gear and shaft to ensure smooth engagement without grinding.
The synchronizer assembly uses friction between a blocker ring and gear cone to bring the free-wheeling gear and the transmission output shaft to identical rotational speeds before the shift sleeve slides into place.

Step-by-Step Solution

1
Identify the primary function described in the problem.
The requirement is matching rotational speeds of internal transmission components prior to mechanical engagement.
When shifting gears in a manual transmission, the selected gear and the transmission main shaft frequently rotate at different speeds.
2
Evaluate the role of transmission synchronizers.
Synchronizers utilize brass or composite blocker rings acting as friction clutches to bring the gear and shaft to identical speeds before locking teeth engage.
Speed equalization prevents gear clash and component damage during shifts.

Key Concept

Manual transmission synchronizer operation and speed equalization
Estimated Time:45s
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Topics

Clutches and Transmissions

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