Exam 22: Hybrid Transmissions

Technician A says torque assist refers to using torque to help propel the vehicle when additional torque is needed. Technician B says common hybrid systems in current production include belt alternator starter and integrated motor assist. Who is correct?

Which of the following transmission designs do not use gears as a method of changing the torque / speed relationship between the input and output shafts of the transmission?

What kind of energy, found in a vehicle's movement, can be used to turn the generator and create electricity to charge the high-voltage battery in a hybrid vehicle.

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?

On some hybrid vehicles, what is the method of slowing the vehicle using the hybrid system rather than hydraulic brakes?

A ________ drive system is defined as a system that uses two or more power sources, such as an internal combustion engine (ICE) and an electric motor, to propel the vehicle.

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

Technician A says that there are no special tools for servicing a high-voltage system on a hybrid vehicle. Technician B says that the special tools needed are always identified on the vehicle's underhood service sticker and not in the service information. Who is correct?

On many full hybrids, which of the following can be used to propel the vehicle during low speed operation?

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

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?

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

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?

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

An electric motor is capable of creating its maximum torque as soon as it begins spinning.

Before repairing a hybrid vehicle, a technician should do which of the following?

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

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?

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?

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?