Chapter 26 POWERPOINT

Use the textbook to define these Technical Terms:

1. assist hybrid

2. full electric vehicle

3. HV battery

4. HV flywheel generator

5. hybrid electric vehicle (HEV)

6. mild hybrid

7. parallel hybrid

8. plug-in hybrid electric vehicle (PHEV)

9. regenerative braking

Use the textbook to answer these discussion questions:

1. What are the major parts common to hybrid gas/ electric or all-electric vehicles?

Read the chapter summary below:

Summary

■ In an HEV, the internal combustion engine and electric drive system work in unison under computer control to propel the vehicle and operate its electrical accessory systems.

■ A typical hybrid drive system has six major assemblies: an HV battery, a motor-generator, an HV power control module, a hybrid control module, HV power cables, and an internal combustion engine.

■ A full hybrid is propelled by the motor-generator until the HV battery has about a 30% charge remaining.

■ In a series hybrid configuration, an electric motor is the only method used to apply torque to the vehicle’s drive train.

■ A parallel hybrid uses both the internal engine and a motor-generator to apply torque to the drive train.

■ The series-parallel hybrid can recharge the HV battery even when the electric motor is used to drive the vehicle.

■ A typical series-parallel hybrid drive system has six basic modes of operation: all-electric drive mode, motor-assist mode, idle stop mode, regenerative braking mode, engine starting mode, and HV battery recharging mode.

■ The HV battery sends high-voltage dc into the HV PCM through the HV power cables.

■ A hybrid motor-generator functions as both a powerful traction motor and as a high-energy alternator in the vehicle’s power train.

■ The HV power control module is a set of electronic circuits that feeds voltage between the HV battery and motor-generator.

■ The hybrid control module controls the HV PCM and motor-generator to keep the battery pack operating at the optimum temperature and state of charge.

■ Hybrid power cables transfer extremely high voltage and current to the components of the electric drive system.

■ The dash display of a hybrid presents many variables pertaining to the performance and condition of the internal combustion engine and electric drive system.