auto transmissions&transaxles
Technician A says that most modern transmissions have at least four forward gears. Technician B says that the highest gear on most modern transmissions is an overdrive gear. Who is right?
Both A and B.
Two ______________________________ axles deliver power to the drive wheels.
CV
On which of the following places would a seal most likely be used to prevent leaks?
Torque converter-to-transmission pump.
The hydraulic parts of the transmission or transaxle on most modern vehicles are operated by ____.
electronic components
Thrust washers are used to control transmission and transaxle ______________________________.
endplay
Bushings and bearings are used to reduce internal transmission or transaxle ______________________________.
friction
Clutch and band material is always bonded to a(n) ______________________________ backing.
metal
The transmission and transaxle hydraulic system performs all of the following tasks, except:
multiplies torque in response to load.
In addition to transmitting engine power, a transmission must also ______________________________ and ______________________________ that power when necessary.
multiply, reverse
The planet gears of a planetary gearset are attached to the ____
planet carrier
The central planetary gear is called the ______________________________ gear.
sun
A CVT uses infinitely variable planetary gears to obtain different gear ratios.
False
Transmission and transaxle cases have internal oil passages drilled into them.
True
The stator redirects fluid moving from ____.
the impeller to the turbine
Technician A says that there are two major classes of hybrid vehicles, the mild hybrid and the full hybrid. Technician B says that there is only one type of hybrid vehicle, the full hybrid. Who is right?
A only
Technician A says that planetary gearsets do not go in and out of engagement. Technician B says that planetary gears are designed to slip under high power. Who is right?
A only.
Technician A says that the pump produces pressure only when the vehicle is moving. Technician B says that the pump produces pressure whenever the engine is running. Who is right?
B only.
Compared to the torque converter, the fluid coupling is very efficient.
False
Some transmission and transaxle oil pans are made of cast iron.
False
The gear ratio of a direct drive gear is about .7 to 1.
False
Technician A says that the first transmissions had aluminum cases. Technician B says that modern transmissions have cast iron cases. Who is right?
Neither A nor B.
A dual clutch transmission can be thought of as two manual transmisssions.
True
All transmissions and transaxles have the same basic purpose.
True
Four-wheel drive vehicles always have a transfer case.
True
Gear ratio is the relationship of the input and output shaft speeds.
True
Most automatic transaxles have at least one hollow shaft.
True
Servos are used to apply bands.
True
Simple planetary gears can be combined into more complex gearsets.
True
The most common holding members are ____.
clutches and bands
a hybrid vehicle, the _____________________________ controls the interaction of the engine and the electric motor.
computer
The engine and drive wheels must be ______________________________ when the vehicle is stopped.
disconnected
On trucks, transmission weight savings are less important than ______________________________.
durability
Transmission fluid performs all of the following tasks, except:
expands gaskets.
A transaxle contains all of the following components, except:
fluid coupling.
Overall transmission pressure is usually called ______________________________ pressure.
line
The clutch discs, apply piston, return springs, and other clutch parts are called a clutch ______________________________.
pack
The first use of electronic transmission control was an electric solenoid used to give a transaxle a(n) ______________________________.
passing gear
The first transaxles were used in vehicles with ______________________________ engines.
rear
In drive, with the engine idling, there is ______________________________ between the impeller and turbine blades. This keeps the engine from stalling but creates heat.
slippage
Failure to transmit engine power to the drive wheels in gears other than neutral is called ______________________________.
slipping
All of the following are found in a fluid coupling, except:
stator.
