Question 1

A DCT transmission is really two separate transmissions, one for the even-numbered gears and one for the odd-numbered gears.

Accepted Answer

A DCT transmission is designed with two separate clutches, allowing for quick, seamless shifts between even and odd-numbered gears. This design is often referred to as a "dual-clutch" transmission.

Question 2

DCTs were first put into production by _____.
A) Volkswagen
B) Borg Warner
C) BMW
D) Porsche

Accepted Answer

Borg Warner was the first manufacturer to put DCTs into production. Volkswagen, BMW, and Porsche all began using DCTs later.

Question 3

Dual-clutch transmissions can change gears faster than any other geared transmission.

Accepted Answer

Dual-clutch transmissions are designed with two separate clutches that allow for seamless and rapid gear changes, resulting in faster gear changes than any other geared transmission.

Question 4

A CVT transmission is an automatic transmission which functions like a manual transmission.

Accepted Answer

A CVT transmission, or continuously variable transmission, uses belts and pulleys to provide an infinite number of gear ratios, allowing for smoother acceleration and improved fuel efficiency. This is similar to how a manual transmission can change gears based on the speed and power needed for the vehicle. However, unlike a manual transmission, the driver does not need to physically shift gears in a CVT transmission.

Question 5

A CVT without a torque converter may use a(n) _____.
A) dual-clutch flywheel
B) start clutch
C) planetary gear
D) initial start pulley

Accepted Answer

A start clutch can be used in place of a torque converter in a CVT to provide initial starting power and smooth engagement. Dual-clutch flywheels are typically used in dual-clutch transmissions, not CVTs. Planetary gears and initial start pulleys are not typically used in CVTs without torque converters.

Question 6

In a typical CVT, one pulley is the drive member and the other is the driven member.

Accepted Answer

In a typical CVT (Continuously Variable Transmission), one pulley serves as the input or drive member, while the other pulley serves as the output or driven member. The diameter of each pulley can be changed by adjusting the distance between them, creating an infinite number of gear ratios.

Question 7

Sequential manual transmissions (SMTs) work like typical manual transmissions, except automatic actuators shift the gears and work the clutch.

Accepted Answer

The answer of Sequential manual transmissions (SMTs) work like typical...

Question 8

If a CVT is equipped with five or six predetermined pulley stops in the transmission, it is known as a(n) _____.
A) manual transmission
B) automatic transmission
C) stepless transmission
D) stepped transmission

Accepted Answer

A CVT (Continuously Variable Transmission) with predetermined pulley stops is known as a stepped transmission. These stops create fixed ratios similar to traditional automatic transmissions, blending CVT efficiency with the familiar feel of gear changes.

Question 9

The size of the pulleys in a CVT is _____ controlled to select the best overall drive ratio based on throttle position, vehicle speed, and engine speed
A) manually
B) automatically
C) electronically
D) computer

Accepted Answer

The size of the pulleys in a CVT is electronically controlled using sensors that transmit data to the vehicle's computer, which then calculates the optimal drive ratio for the given driving conditions. This process happens automatically and continuously, without the need for any manual adjustment.

Question 10

Controller area network (CAN) components are used in _____ to interconnect the network of electronic control modules.
A) Toyota and Lexus hybrids
B) Ford hybrids
C) BMW hybrids
D) Honda hybrids

Accepted Answer

The answer of Controller area network (CAN) components are used...

Question 11

The _____ hybrid system, found in GM, BMW, and DaimlerChrysler vehicles, relies in advanced hybrid, transmission, and electronic technologies to improve fuel economy and overall vehicle performance.
A) two-mode
B) four-mode
C) SMG
D) MGR

Accepted Answer

The two-mode hybrid system is known for its advanced hybrid, transmission, and electronic technologies that improve fuel economy and overall vehicle performance. This system is used by GM, BMW, and DaimlerChrysler vehicles. The other options, SMG and MGR, are transmission systems used by specific brands (SMG by BMW and MGR by MG Rover) and four-mode hybrid system is not as widely used as the two-mode hybrid system.

Question 12

All dual-clutch transmissions use wet clutches to prevent overheating and damage.

Accepted Answer

Dual-clutch transmissions can use either wet or dry clutches; the choice depends on the specific application, design, and performance requirements. Wet clutches are lubricated with oil to manage heat, while dry clutches do not use oil, which can make them lighter but potentially less durable under high stress.

Question 13

Technician A says both MG1 and MG2 are used to power the drive wheels in a Toyota hybrid drive system. Technician B says only MG1 is used to drive the wheels. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Accepted Answer

The answer of Technician A says both MG1 and MG2...

Question 14

A(n) _____ is a fully automated, manual transmission with two computer-controlled clutches.
A) SMT
B) DCT
C) CVT
D) SST

Accepted Answer

DCT (Dual Clutch Transmission) is a fully automated, manual transmission with two computer-controlled clutches. SMT (Sequential Manual Transmission) and SST (Sport Shift Transmission) are also types of automated manual transmissions, but they only have one clutch. CVT (Continuously Variable Transmission) is not a type of automated manual transmission.

Question 15

In Toyota and Lexus hybrids, MG1 is used as a starter activator and a generator.

Accepted Answer

Yes, in Toyota and Lexus hybrids, MG1 (Motor Generator 1) is used as a starter activator and a generator.

Question 16

The most complex transmissions are those used in most high-performance vehicles.

Accepted Answer

High-performance vehicles often use advanced transmissions, but complexity varies widely across different types of vehicles, including commercial, industrial, and luxury vehicles, which may have transmissions that are equally or more complex for different purposes.

Question 17

Two-mode hybrid vehicles can rely on electric motor power, engine power, or both.

Accepted Answer

Two-mode hybrids have the ability to use electric motor power, engine power, or both, making them versatile in terms of power source.

Question 18

Currently, Audi has more models available with DCTs than any other manufacturer.

Accepted Answer

Volkswagen Group, which Audi is part of, widely uses DCTs across its brands, but Audi itself does not have the most models with DCTs compared to all other manufacturers. Brands like Volkswagen and Porsche also offer numerous models with DCTs, and other manufacturers outside the Volkswagen Group offer a variety of models with DCTs as well.

Question 19

Motor generator 1 (MG1) and Motor generator 2 (MG2) are components found in _____.
A) Toyota and Lexus hybrids
B) Ford hybrids
C) BMW hybrids
D) Honda hybrids

Accepted Answer

MG1 and MG2 are components unique to Toyota and Lexus hybrids, specifically the Toyota Prius and Lexus CT.

Question 20

Dual-clutch transmissions are being discussed: Technician A says these transmissions use a modified torque converter to transfer power from the engine to the transmission. Technician B says dual-clutch transmissions can use either wet or dry clutches. Who is correct?
A) A only
B) B only
C) both A and B
D) neither A nor B

Accepted Answer

Technician A is incorrect because dual-clutch transmissions do not use a torque converter as they rely on the clutches to transfer power from the engine to the transmission. Technician B is correct as dual-clutch transmissions can use either wet or dry clutches.

Quiz 11: Electronically Controlled and Automated Transmissions Diagnosing Advanced Electronic Systems

A DCT transmission is really two separate transmissions, one for the even-numbered gears and one for the odd-numbered gears.

DCTs were first put into production by _____.

Dual-clutch transmissions can change gears faster than any other geared transmission.

A CVT transmission is an automatic transmission which functions like a manual transmission.

A CVT without a torque converter may use a(n) _____.

In a typical CVT, one pulley is the drive member and the other is the driven member.

Sequential manual transmissions (SMTs) work like typical manual transmissions, except automatic actuators shift the gears and work the clutch.

If a CVT is equipped with five or six predetermined pulley stops in the transmission, it is known as a(n) _____.

The size of the pulleys in a CVT is _____ controlled to select the best overall drive ratio based on throttle position, vehicle speed, and engine speed

Controller area network (CAN) components are used in _____ to interconnect the network of electronic control modules.

The _____ hybrid system, found in GM, BMW, and DaimlerChrysler vehicles, relies in advanced hybrid, transmission, and electronic technologies to improve fuel economy and overall vehicle performance.

All dual-clutch transmissions use wet clutches to prevent overheating and damage.

Technician A says both MG1 and MG2 are used to power the drive wheels in a Toyota hybrid drive system. Technician B says only MG1 is used to drive the wheels. Who is correct?

A(n) _____ is a fully automated, manual transmission with two computer-controlled clutches.

In Toyota and Lexus hybrids, MG1 is used as a starter activator and a generator.

The most complex transmissions are those used in most high-performance vehicles.

Two-mode hybrid vehicles can rely on electric motor power, engine power, or both.

Currently, Audi has more models available with DCTs than any other manufacturer.

Motor generator 1 (MG1) and Motor generator 2 (MG2) are components found in _____.

Dual-clutch transmissions are being discussed: Technician A says these transmissions use a modified torque converter to transfer power from the engine to the transmission. Technician B says dual-clutch transmissions can use either wet or dry clutches. Who is correct?