Auto Trans Week1 Flashcards
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which one of the following statements is true of a torque converter when comparing it with a standard fluid coupling?
a torque converter is capable of multiplying torque.
which of the torque converter components is known as the driving member
the turbine
which torque converter component is splined to a shaft that connects to the forward clutch of the transmission?
the turbine
which of the torque converter components is responsible for torque multiplication?
the pump/impeller
what medium is used to transfer energy through a torque converter when it is not in lockup mode?
transmission fluid
where is the stator located in a torque converter assembly?
between the pump/impeller and turbine
when is Rotary fluid flow at a maximum during torque converter operation
at coupling phase
in a torque converter which type of fluid flow has the effect of multiplying torque?
Vortex flow
what is the function of split guide rings in a torque converter?
to reduce turbulence
in order for torque multiplication to take place in a torque converter which of the following should be true?
the pump/impeller must turn faster than the turbine
which of the following is true during the torque converter coupling phase
the turbine speed it’s just slightly slower than the impeller speed
at torque converter coupling phase
the lock-up clutch disengages
what is the most common lock-up clutch designs used in heavy duty torque converters
piston
technician A says that a torque converter with a stall torque ratio of 1.5.1can transmit 75% of engine torque to the transmission it is coupled to. Technician B says that when the engine RPM torque converter impeller RPM and torque converter turbine RPM are all identical the torque converter is operating in rotary flow mode who was correct
?
if engine output torque to a torque converter with a stall torque ratio of 2:1 is 1000 lb what would be the maximum converter output torque specification
?
technician A says that engine and torque converter impeller should both turn in the same RPM. Technician B says that the torque converter turbine and transmission input shaft should both turn at the same RPM. Who is correct?
?
technician A says that bolted torque converters can usually be serviced and repaired. Technician B says that welded torque converter housing can usually be serviced and repaired. Who is correct?
technician A only
technician a says that when a truck is stationary and the engine is running at idle. The torque converter behaves like a disengaged clutch, Technician B says that whenever the torque converter impeller is rotating there is output to the transmission. Who was correct?
?
which is commonly used to mount a torque converter to the engine crankshaft
a flexplate
in which of the following phases would the drive efficiency of a torque converter be at 100%?
at lockup
