Torque Converter and Epicyclic Gear train

What is "coupling point"?

• When you hold the car with the brakes when it is in drive.

• When the turbine and impellor speeds are the same

• When the stator lock on the one way clutch

• When two gears are selected together.

Answer explanation

When the turbine and impellor speeds are matched inside the torque converter. Some torque converters also have a lockup clutch to improve efficiency.

What is approximately the maximum torque multiplication in a torque converter?

• 2.2:1

• 1:1

• 14.7:1

• All answers are correct

Answer explanation

Its not always "all answers are correct" just because it's there.

Maximum torque multiplication happens when there is the greatest difference in speeds between the impellor and the turbine. its around 2.2:1

Which of the following are used in an automatic transmission to select a gear ratio?

• Brake bands

• multi-plate clutch packs

• unidirectional sprag clutches

• All answers are correct

Answer explanation

sometimes all answers are correct.

Reverse is obtained by ​ (a)   the ​ (b)   and ​ (c)   the ​ (d)   gear.

• clamping
• planet carrier
• driving
• sun
• reversing
• planet

What is the Orange part?

• Annulus

• Sun gear

• Earth gear

• Moon gear

What are the blue parts?

• Planet gears

• Sun gears

• Earth gears

• Moon gears

What happens if the dark grey part is clamped and stopped from rotating if the orange gear is rotating clockwise?

• All gears would lock up

• reverse would be selected

• planet carrier would rotate clockwise

• planet carrier would rotate anti-clockwise

Which part is the turbine?

Which part is bolted to the flywheel?

Answer explanation

The casing of the torque converter is bolted to the flywheel.

The ​ (a)   drives the ​ (b)   which, in turn drives the ​ (c)   .

• Flywheel
• impellor
• turbine
• stator
• clutch