Torque converters, planetary gearsets, hydraulic circuits and electronic controls.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What does a torque converter do?
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Transfers engine power to the transmission while allowing the engine to idle with the car stopped- What device holds the torque converter stator stationary?
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One-way clutch (freewheel)- When does the lock-up clutch in a torque converter engage?
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When the vehicle reaches cruise speed to reduce heat and improve fuel economy- Name the three main rotating elements inside a torque converter
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Pump, turbine, and stator- What is the typical maximum torque multiplication ratio of a non-locking torque converter?
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2.0 to 3.0 times engine torque- What causes fluid to circulate in a torque converter at idle?
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The pump, which is driven by the engine crankshaft- At what point does the stator in a torque converter freewheel?
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When turbine speed approaches pump speed and torque multiplication is no longer needed- What is vortex flow in a torque converter?
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Circular motion of fluid as it moves from pump through turbine and back through stator- What fluid fills a torque converter?
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Automatic transmission fluid (ATF)- Why does a torque converter eliminate the need for a mechanical clutch?
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It uses hydraulic fluid to transmit power smoothly without direct mechanical engagement- What is a planetary gearset?
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A gear arrangement with a sun gear, planet gears, and ring gear that creates multiple gear ratios- Name the three basic components of a simple planetary gearset
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Sun gear, planet gears (on carrier), and ring gear- What ratio results when the carrier is held stationary in a planetary gearset?
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A reduction ratio determined by the ring and sun gear teeth count- What happens when the sun gear and ring gear are locked together in a planetary gearset?
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Direct drive (1:1 ratio) because all components rotate as one unit- What gear ratio is produced when a planetary gearset ring gear is held stationary?
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Overdrive ratio (gear reduction less than 1:1)
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