Transmission Flashcards
The purpose of the guide ring in a torque converter is to reduce the oil:
a. Movement between members.
b. Turbulence.
c. Level in the coupling phase.
d. Impact Angle.
b. Turbulence
A guide ring along the inner edges of the vanes provides a path for smooth fluid flow.
Too much automatic transmission shaft end play could be caused by any of these EXCEPT a worn:
a. Clutch
b. Selective washer
c. Transmission case
d. Planetary carrier
a. Clutch.
A worn clutch disc is the only part in a transmission that does not contribute to shaft end play.
If the engine load is high, the manifold vacuum is low and the throttle is wide open, the throttle pressure will be:
a. Low
b. High
c. Moderate
d. Decreasing
b. High.
Fully open throttle pedal (high) will cause the throttle pressure to climb (high).
Which of the following is not a benefit of using planetary gear sets in transmission?
a. Long life
b. Compactness
c. Lower torque
d. Smooth ratio changes
c. Lower torque.
A planetary gearset creates all the gear ratios that a transmission can produce. It gives vehicle the ability to change gears smoothly as a vehicle reaches different speeds without having to move the gear shift like in a manual system. Lower torque is not a benefit.
Torque multiplication is greater at what speed?
a. Low speed
b. Cruising speed
c. High speed
d. On the float
a. Low speed.
A torque converter will not cause torque multiplication. What is the problem?
a. The stator is not locking to redirect fluid to the impeller.
b. The stator is locking and redirecting fluid to the impeller.
c. The impeller is being driven at engine speed.
d. The impeller and turbine are being driven at the same speed.
a. The stator is not locking to redirect fluid to the impeller.
When referring to a simple planetary gear set in a transmission, the (blank) is the output member for reduction ranges.
a. Planetary carrier
b. Pinion
c. Sun
d. Annulus
a. Planetary carrier. Whenever the carrier in a planetary gear set is the output member,
the condition will ALWAYS be forward reduction, always!!!!
What allows the stator to operate correctly during vortex and rotary flow?
a. the torque converter clutch
b. an overrunning clutch
c. governor pressure
d. throttle pressure
b. an overrunning clutch.
In fluid dynamics, a vortex is a region in a fluid in which the flow revolves around ab axis line.(straight or curve)
the stator resides in the very center of the torque converter. it’s job it to redirect the fluid returning from the turbine before it hits the pump again.
The STATOR’s overrunning clutches enables thee stator to spin freely in one direction. if the stator’s one-way clutch spins freely while at low speed, there will be loss of torque multiplication.
Another name for the internal gear is the:
a. Pinion
b. Annulus
c. Axis
d. Reaction member
b. Annulus
A torque converter stall:
a. Two members are stationary and one is turning
b. One member is stationary and two are turning
c. None of the members are stationary
d. All of the members are stationary
b. One member is stationary and two are turning. (verify answer)
A torque converter consists of three major internal components: the pump, turbine, and stator,
a torque converter has three stages of operation: stall, acceleration, and coupling.
during a stall test, the torque converter impeller is spinning at maximum speed while the the turbine is held stationary.
