Exam 35: Hybrid Vehicles

While discussing the DC-DC converter used in most hybrids: Technician A says that it changes some of the DC voltage from the battery module to an AC voltage for the electric motors. Technician B says that it provides the power to operate the car's 12 -volt electrical system and accessories. Who is correct?

Technician A says a mild hybrid has stop-start, regenerative braking, and electric motor assist available when the engine needs added power to overcome the load. Technician B says a full hybrid has stop-start, regenerative braking, electric motor assist, and can be driven by only electricity. Who is correct?

On a Honda hybrid, the IMA [integrated motor assist] unit is located ______.

Which of the following is the least likely to decrease fuel consumption of a hybrid vehicle?

The Prius PHEV offers many advantages over the basic Prius, how is that possible?

The integrated starter alternator damper (ISAD) system replaces the conventional starter, generator, and transmission.

Technician A says Ford hybrid SUV's with 4WD have an additional motor in the rear axle. Technician B says Ford's Energi models are plug-in hybrids. Who is correct?

While discussing regenerative braking: Technician A says the regenerative system can completely stop the vehicle in order to generate a maximum amount of electricity. Technician B says since most hybrids are FWD vehicles, the rear wheels are designed to claim the most kinetic energy. Who is correct?

What is a plug-in hybrid?

Because of the memory effect, nickel-metal-hydride [Ni-MH] type batteries are never used in hybrid vehicles.

A hybrid vehicle may have battery voltages over 200 volts.

Technician A says diesel engines can be used in a hybrid powertrain. Technician B says a gasoline engine is normally used in hybrid powertrain. Who is correct?

Which of the following statements about the high voltage circuits in a Honda Hybrid is NOT true?

In a hybrid vehicle the ___________________ changes the high DC voltage of the battery to a high AC voltage for the electric motors.

After isolating the high-voltage system, what is the minimum time you should wait before beginning to work on or around the hybrid system?

While discussing working on hybrid vehicles: Technician A says to make sure that the high-voltage system is shut down and isolated from the vehicle before working near or with any high-voltage component. Technician B says that when working on or near the high-voltage system, even when it is de-powered, always use insulated tools. Who is correct?

Technician A says hybrids have an electrohydraulic brake assist system. Technician B says hybrids have an engine vacuum assisted power brake system. Who is correct?

While discussing the other classifications for the extended EV, the Chevy Volt: Technician A says it can be called a plug-in hybrid. Technician B says it can be called a parallel hybrid. Who is correct?

Two technicians are discussing the operation of the Toyota hybrid transaxle. Technician A says that the vehicle is driven electrically by MG2 when the transmission selector is in reverse. Technician B says that whenever the car is powered by MG2, the engine may start if the battery SOC is low. Who is correct?

A parallel hybrid can run on just the engine, just the batteries, or a combination of the two.