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What is a major function of the gear ratio adjustment in a transmission?
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Adjusts the ratio between drive wheels and engine to control speed.
Describe the key components of an automatic transmission.
Torque converter and planetary gear system (sun gear, planetary gears, ring gear).
In what scenario is engine braking not available with a CVT?
During normal driving, because the CVT lacks a fixed gear ratio.
What is the mechanism behind an Automated Manual Transmission (AMT)?
Sensors and actuators handle the clutch and shifting.
What key role does a car transmission serve?
Transfers power from the engine to the wheels.
Identify one advantage and one disadvantage of Automated Manual Transmission (AMT).
Advantage: Reduces driver fatigue. Disadvantage: Unplanned shifts during overtaking.
How does an Intelligent Manual Transmission (IMT) improve on traditional manual transmissions?
It offers full control without the need to operate a clutch pedal.
What are the advantages and disadvantages of using a Dual Clutch Transmission (DCT)?
Advantages: Fast gear changes. Disadvantages: Complex, expensive, costly repairs.
Why is the engine disconnection feature important in a transmission?
It disconnects the engine from the drive wheels when the vehicle stops.
What are the primary pros and cons of using an automatic transmission?
Pros: Easy to use, comfortable driving. Cons: Complex, prone to more failures, expensive to maintain/repair.
Why is a CVT often considered more fuel-efficient but less suitable for off-road conditions?
Its continuous gear ratio adjustment leads to smooth and efficient power delivery, but it lacks the robustness needed for off-road conditions.
What are the drawbacks of an Intelligent Manual Transmission (IMT)?
Less smooth gear shifts due to single clutch modulation by an actuator.
How does a Continuously Variable Transmission (CVT) differ fundamentally from other transmissions?
Uses a belt and pulley system to provide an infinite range of gear ratios.
What critically distinguishes a semi-automatic transmission from a fully automatic transmission?
Uses a computer-controlled clutch but no clutch pedal.
What are the primary pros and cons of a manual transmission?
Pros: Better for off-road/high torque use, reliable, easy to service/repair. Cons: Requires skill, lower resale, higher learning curve, more work during driving.
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