Name 8 Gear forms
Planetary gear: How does the velocity of the planetary carrier in the middle and the two contact points behave when
sun gear is moving, ring gear not
both are moving in opposite directions
ring gear is moving, sun gear not
case 3: v_A = 0; 2*v_C = v_B
What is the idea of the hydrostatic drive?
Through the rotation of inclined chambers, the chambers experience a cycle of high pressure and low pressure.
This translates to torque on the motor side.
How can the transmission ratio/ torque be changed in a hydrostatic drive?
How can the power (P) be changed?
The transmission ratio is equal to the volume ratio (motor/ pump)
—> it depends on the area, inclination angle and number of pistons
To change the transmission ratio, the motor-angle is fixed and the pump-angle can be changed.
Power is doubled if the radius or the angular velocity of the pump is doubled.
What is the concept behind hydrodynamic coupling?
A driving impeller accelerates a fluid.
The fluid’s momentum is transferred to a turbine
Torque is transmitted via fluid inertia and circulation, not friction (centrifugal force)
—> The difference in the angular velocities of impeller and turbine results in a difference of centrifugal forces, which is the reason for the ring flow
Always involves some slip between input and output.
Provides smooth torque transfer and vibration isolation
What is the essential difference between a hydrodynamic coupling and a converter?
The guidance wheel and shape of the blades (or vanes)
What is a big advantage of hydrostatic transmission over mechanical ones?
Why is it important for heavy military vehicles?
Continuous transmission —> infinitely variable steering area
left: mechanical steering transmission
right: hydrostatic steering transmission
Fill in the blanks
Explain how this transmission works
Last changed2 days ago
