190303B Flashcards
What controls Volume in a Fluid Coupler/Torque Converter?
Physical size of impeller, number and structure of vanes
What is controlled by the speed of the impeller?
Velocity
Describe Viscosity
Viscosity rating of the oil used in the system is another factor of energy transfer, used with Velocity and Volume.
Describe Kinetic Energy
Kinetic Energy is the energy of motion
What does the turbine convert kinetic energy into?
Mechanical energy
What are the two elements of a fluid coupler (clutch)?
Impeller and Turbine
When does the impeller on a simple fluid clutch rotate?
When the engine is running, it turns with the flywheel
At what engine speed is the coupling effect achieved in a fluid clutch?
At high engine speeds
What type of energy does a turbine received?
hydraulic energy from impeller
Where is the mechanical linkage between the input and output on a fluid clutch?
There is no mechanical linkage
What is an advantage of using a fluid coupling?
Fluid can absorb shock loads
Gradual start up
When is direct drive achieved in a fluid coupler?
NEVER. There is always slippage due to no mechanical linkage
What can fluid couplings do with torque?
They can transfer it but not increase or multiply it
True or False: Vortex flow is created when the oil flows the same direction as the impeller is turning.
False, turbine and impeller move a different speeds creating vortex flow
What is rotary flow also known as?
Coupling Phase
Converter phase is?
Vortex flow
Split guide rings are only used in fluid clutches?
No, they are also used in Torque converters
What does a split guide ring prevent?
Turbulence within the unit while it is operating
Torque converter has another component than fluid couplings, what is it called?
A stator
How can you tell if a torque converter is remote?
there is a drive shaft between the engine and the torque converter
Where is a torque converter usually found (mounted)?
On the engine
What is another name for a Impeller Element?
Pump Element
What is a torque converter output shaft also considered?
Transmission input shaft
What type of member is a stator?
Reaction Member
What can change the amount of torque multiplication?
Hint: Design
The angle of the vanes in the elements
When is torque being multiplyed in a torque converter? What condition are the elements in?
Impeller rotates faster than turbine
Stator is stopped
