Deck 22: Hybrid Transmissions

Question 1

Hybrid vehicles are classified as mild or full hybrid based on the:

A) number of hybrid functions they use.
B) number of power sources they use.
C) type of power sources they use.
D) type of engine and transmission used.

Answer 1

A

Question 2

Which function uses a small, electric transmission hydraulic pump that prevents a delay in the engagement of the transmission?

A) Torque smoothing
B) Idle start
C) Regenerative braking
D) Electric-only propulsion

Answer 2

B

Question 3

What is helpful on small three- and four-cylinder engines with respect to compression and power impulses?

A) Electric-only propulsion
B) Belt alternator starter
C) Torque assist
D) Torque smoothing

Answer 3

D

Question 4

All of the following statements are true except:

A) Regenerative braking system turns the generator and creates electricity to charge the high-voltage battery.
B) Regenerative brakes can develop great amount of stopping power.
C) Regenerative braking system is an opportunity to energize the battery.
D) Regenerative braking system makes hybrids ideal for delivery vehicles and city transit buses.

Question 5

Which of these systems uses an electric motor with an ICE so that the overall displacement of the ICE can be reduced?

A) Torque smoothing
B) Torque assist
C) Electric-only propulsion
D) Integrated motor assist

Question 6

Tech A states that all hybrid vehicles can operate on electric propulsion only. Tech B states that most hybrids utilize stop start technology to improve fuel economy. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 7

Tech A states that electric motors tend to create more torque than gasoline engines. Tech B states that electric motors are used to create additional high speed horsepower on most hybrids. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 8

Tech A states that hybrid vehicles store AC voltage in battery packs to be used to propel the vehicle. Tech B states that hybrid vehicles recapture energy during braking and stores it in the battery. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 9

All of the following statements with respect to the Honda integrated motor assist are true except:

A) It uses between 144 volts and 158 volts, depending on the year and specific model.
B) It does not have a conventional 12-volt starter.
C) Both the gasoline and electric motors operate at the same time in the IMA.
D) It uses a thin electric motor in place of a conventional flywheel or flexplate.

Question 10

All of the following systems are considered as full hybrid that can be classified as a series-parallel hybrid except:

A) electric-only propulsion systems.
B) Honda two-motor hybrid systems.
C) Toyota and Lexus hybrid systems.
D) Ford hybrid powertrain.

Question 11

Which system allows the vehicle to use the fuel savings of the idle stop function in hybrid vehicles?

A) Integrated motor assist
B) Belt alternator starter
C) Regenerative braking
D) Electric-only propulsion

Question 12

Which hybrid system has two electric motors attached through a set of transfer gears?

A) Honda Intelligent Multi-Mode Drive
B) Toyota and Lexus hybrids
C) Ford hybrids
D) Two-mode hybrid

Question 13

Tech A states that hybrid vehicles use higher voltage than traditional cars. Tech B states that hybrid vehicles use one or more operating modes to achieve higher fuel economy. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 14

Tech A states that hybrid vehicles use high voltage to power the traditional starter motor to allow it to crank the engine over faster. Tech B states that some hybrids will have two starter motors, one high voltage, one 12 volts. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 15

Tech A states that vehicle transmissions must include some modifications to allow for start stop operation. Tech B states that the Honda IMA system utilizes a thin electric motor between the engine and transmission. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 16

All of the following statements are true except:

A) After the shutdown procedure is completed, a voltmeter must be used to verify that the voltage has been shut off.
B) High voltage loves are actually two gloves in one: a rubber inner glove, and a leather outer glove that protects the rubber gloves.
C) Insulation on the windings inside hybrid electric motors must be designed to handle very high voltages.
D) High voltage gloves are hardy and should be discarded only when there is major damage.

Question 17

Tech A states that before performing service on some components on a hybrid vehicle it will be necessary to shut off the high voltage system. Tech B states that high voltage gloves must be worn when working on high voltage circuits. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 18

Tech A states that high voltage gloves should be replaced every year. Tech B states that high voltage gloves should be tested or replaced every 6 months. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 19

Tech A states that the Prius drive system only uses electric motors to propel the vehicle in reverse. Tech B states that the Prius drive system uses a small planetary gear set for reverse. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 20

Tech A states that high voltage wiring will be encased in color coded conduit to identify the high voltage. Tech B states that many connectors on hybrids will have an interlock system built in that will turn off the high voltage system if the connector is unplugged. Who is correct?

A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Question 21

Technician A says that all hybrid vehicles use the same transmission as a non-hybrid vehicle. Technician B says that some hybrid transmissions have a small electric fluid pump for when the transmission is in idle/stop mode. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 22

Technician A says that parallel hybrid systems use transmissions that allow both the internal combustion engine and electric motor to drive the wheels at the same time. Technician B says that all hybrid systems use a variable pulley diameter continually variable transmissions to connect the internal combustion engine to the electric motor. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 23

Technician A says that Belted Alternator Starter (BAS) vehicles use an alternator to help slow the vehicle and act as a starter. Technician B says that the BAS alternator can be used to propel the vehicle without the internal combustion engine. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 24

Technician A says that Belted Alternator Starter (BAS) vehicles use an alternator to help slow the vehicle and act as a starter. Technician B says that the BAS alternator can be used to propel the vehicle without the internal combustion engine. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 25

Technician A says that the Honda IMA system uses a thin electric motor between the engine and the transmission. Technician B says that the Honda IMA system uses battery voltages between 144 and 158 volts. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 26

Technician A says that the Honda IMA system uses a thin electric motor between the engine and the transmission. Technician B says that the Honda IMA system uses battery voltages between 144 and 158 volts. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 27

Technician A says that the transmission in a Toyota hybrid has a separate gear to provide reverse. Technician B says that Toyota hybrids use a Variable Diameter Pulley (VDP) type Continuously Variable Transmission (CVT). Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 28

Technician A says that the transmission in a Toyota hybrid has a separate gear to provide reverse. Technician B says that Toyota hybrids use a Variable Diameter Pulley (VDP) type Continuously Variable Transmission (CVT). Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 29

Technician A says that two-mode hybrid transmissions can use two electric motors to propel the vehicle. Technician B says that the two-mode hybrid transmission can use one motor to propel the vehicle and one to charge the battery. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 30

Technician A says that two-mode hybrid transmissions can use two electric motors to propel the vehicle. Technician B says that the two-mode hybrid transmission can use one motor to propel the vehicle and one to charge the battery. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 31

Which of the following manufacturers uses a set of transfer gears inside their series-parallel hybrid transaxle to connect the two electric motors/generators to the internal combustion engine (ICE)?

A) Ford
B) Toyota
C) Lexus
D) General Motors

Question 32

Technician A says Toyota and Lexus hybrid systems monitor battery voltage; if voltage is low, the internal combustion engine (ICE) is engaged. Technician B says Ford hybrid systems monitor battery voltage; if voltage is low, the ICE is engaged. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 33

The Honda IMA system is an example of the two-mode hybrid system.

Question 34

Which of the following hybrid electric systems uses a belt-driven alternator that also doubles as a starter?

A) Integrated motor assist (IMA)
B) Belt alternator starter (BAS)
C) Two-mode hybrid
D) All of the above

Question 35

Belt Alternator Starter hybrid systems are capable of auto stop but cannot provide regenerative braking.

Question 36

Which of the following hybrid electric systems uses a thin electric motor located between the engine and transmission?

A) Integrated motor assist (IMA)
B) Belt alternator starter (BAS)
C) Two-mode hybrid
D) All of the above

Question 37

What is the battery pack voltage in a Honda integrated motor assist (IMA) system?

A) 42 volts
B) 42 volts to 100 volts
C) 144 volts to 158 volts
D) None of the above

Question 38

Honda's integrated motor assist (IMA) system can be used with a conventional automatic transmission, a manual transmission, or a continuously variable transmission (CVT).

Question 39

Two technicians are discussing Toyota and Lexus hybrids. Technician A says Toyota and Lexus hybrids use a power-splitting device that could be considered a type of CVT. Technician B says these types of hybrids use voltages from 200 to 650 volts depending on the application. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 40

Which of the following is the classification of Toyota and Lexus hybrids?

A) Two-mode hybrid
B) Parallel hybrid
C) Series-parallel hybrid
D) All of the above

Question 41

Toyota and Lexus series-parallel hybrids use a transaxle that contains two electric motor/generators, a final drive gear set, a differential, and planetary gear set.

Question 42

Which of the following can be used in a hybrid vehicle to generate electricity to charge the high-voltage battery?

A) The vehicle's kinetic energy during braking
B) The vehicle's potential energy during acceleration
C) Solar energy during static operation
D) None of the answers listed

Question 43

Which of the following hybrid system functions allows the hybrid vehicle to use a smaller internal combustion engine and still perform like a non-hybrid vehicle with a larger engine?

A) Torque smoothing
B) Torque assist
C) Idle stop
D) Regenerative braking

Question 44

Which of the following hybrid electrical systems uses a thin electric motor in place of a conventional flywheel or flex plate?

A) Integrated motor assist (IMA)
B) Belt alternator starter (BAS)
C) Two-mode hybrid
D) All of the above

Question 45

Which of the following hybrid systems cannot drive the vehicle by using only the electric motor only?

A) Integrated motor assist (IMA)
B) Two-mode hybrid system
C) Both Integrated motor assist (IMA) & Two-mode hybrid system
D) None of the above

Question 46

The Belt Alternator Starter (BAS) hybrid system is widely used by all manufacturers.

Question 47

Which of the following is the voltage used by a Honda integrated motor assist (IMsystem?

A) 42 volts
B) 42 volts to 100 volts
C) 144 volts to 158 volts
D) 244 volts to 288 volts

Question 48

The Honda ____________system can be used with a conventional automatic transmission, a manual transmission, or a continuously variable transmission (CVT).

A) belted alternator starter
B) two mode
C) electronically continually variable transmission
D) integrated motor assist

Question 49

Two technicians are discussing Toyota and Lexus hybrids. Technician A says Toyota and Lexus hybrids use a power-splitting device that could be considered a type of CVT. Technician B says these types of hybrids use voltages from 200 to 650 volts, depending on the application. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 50

How are Toyota and Lexus hybrid systems classified?

A) Two-mode hybrid
B) Parallel hybrid
C) Series-parallel hybrid
D) Series hybrid

Question 51

The hybrid system found in Toyota and Lexus vehicles uses a transaxle that contains two electric motor/generators, a final drive gear set, a differential assembly and a planetary gear set.

Question 52

Two technicians are discussing two-mode hybrid vehicles. Technician A says the system uses 300 volts to power the two electric motor/generators housed inside the transmission case. Technician B says the two-mode hybrid uses three or four planetary gear sets, depending on the application. Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question 53

Which of the following modes is used for low vehicle speed operation in a two-mode hybrid?

A) Mode 1
B) Mode 2
C) Both Mode 1 and Mode 2
D) None of the above

Question 54

Which of the following features is used in Mode 2 of a two-mode hybrid to achieve fuel savings?

A) Shutting down cylinders
B) Variable cam timing
C) Both shutting down cylinders and variable cam timing
D) None of the above

Question 55

The two-mode hybrid system was developed between General Motors, Chrysler and BMW for lightweight sub-compact cars.

Question 56

The Two-mode hybrid system uses a belt driven alternator/starter.

Question 57

Currently, hybrid vehicles are available from only a few vehicle manufacturers.

Question 58

New hybrid vehicle models are being added every month as the demand for more fuel-efficient vehicles increases.

Question 59

The only major difference between the Ford and the Toyota hybrid vehicles is that rather than having the two electric motor/generators directly connected to the ring gear and the sun gear, as they are in the Toyota vehicles, the Ford hybrids are attached through a set of ________.

A) Gear ratios
B) Transfer gears
C) Planetary gears
D) None of the above

Question 60

Belt Alternator Starter (BAS) vehicles cannot provide regenerative braking.

Question 61

Conventional starter motors and alternators in non-hybrid vehicles typically operate on 42 volts, while the Belt Alternator Starter (BAS) hybrid system uses a 12-volt battery.

Question 62

Belt alternator starter (BAS) vehicles have been produced primarily by the General Motors Corporation.

Question 63

Which of the following transaxles can be used in combination with the integrated motor assist system?

A) Conventional automatic transaxle
B) Manual transaxle
C) Continuously Variable Transaxle
D) All of the above

Question 64

To maximize fuel savings and hybrid function performance, what is different between transaxles used with an Integrated Motor Assist (IMA) hybrid and those used in a conventional vehicle?

A) Clutch material
B) Gear ratios
C) Gear design
D) There is no difference between hybrid and non-hybrid transaxles

Question 65

Because because the electric motor is operating at the same time as the gasoline engine, how is the Honda Integrated Motor Assist (IMA) system classified?

A) Mild hybrid
B) Series hybrid
C) Parallel hybrid
D) Series-parallel hybrid

Question 66

Currently, Honda Integrated Motor Assist (IMA) hybrids cannot drive using the electric motor only because the IMA rotor is not able to disconnect from the gasoline engine.

Question 67

Because either the gasoline engine or the electric motor/generator can propel the vehicle, or both can be used together, how are Toyota and Lexus hybrids classified?

A) Mild
B) Series
C) Parallel
D) Series-parallel

Question 68

In Toyota and Lexus hybrid vehicles, what is used to charge the high-voltage battery pack and to crank the engine over?

A) M/G1
B) M/G2
C) Regenerative braking
D) All of the above

Question 69

In Toyota and Lexus hybrid vehicles, through what part are each of the electric motor/generators and the Internal Combustion Engine (ICE) connected?

A) Final drive unit
B) Continuously Variable Transmission (CVT)
C) Planetary gear set
D) Drivetrain

Question 70

The Ford transaxle uses two electric motor/generators that, in conjunction with an Internal Combustion Engine (ICE), split power through a planetary gear set.

Question 71

The Ford Escape and Fusion hybrids (along with the Lincoln and Mercury versions) are very similar in operation to the Toyota system.

Question 72

Ford Motor Company uses planetary gear sets in their hybrid vehicles to create a ________ when it is requested by the driver.

A) High ratio
B) Low ratio
C) Neutral
D) None of the above

Question 73

Ford advertises their Continually Variable Transmissions (CVTs) as two-speed CVTs.

Question 74

In Mode 1 of a two-mode hybrid, the electric motor/generators, in combination with the planetary gear sets, allow the transmission to operate as a type of ________, keeping the engine operating in its most efficient rpm range.

A) Continuously Variable Transmision (CVT)
B) Integrated Motor Assist (IMA)
C) Belt Alternator Starter (BAS)
D) None of the above

Question 75

In a two-mode hybrid, the Powertrain Control Module can phase in and out each of the ________ to create four distinct gear ratios.

A) Compressors
B) Generators
C) Motors
D) Planetary gear sets

Question 76

During Mode 1 of a two-mode hybrid vehicle, only the gasoline engine is running to propel the vehicle.

Question 77

Mode 2 of a two-mode hybrid is used at low speeds and light engine load.

Question 78

Which of the following hybrid systems cannot drive using the electric motor only?

A) Integrated motor assist (IMA)
B) Two mode hybrid
C) Belt alternator starter (BAS)
D) Both A and C

Question 79

Extreme safety should be exercised when working on a hybrid vehicle.

Question 80

A technician should only work on a hybrid vehicle once they have completed the safety training and have a thorough knowledge of the system.