Download Auto Service Worksheet________Name

Auto Study Guide
Hybrid Drive Systems
Chapter #38
Pages 694-723
Name__________________________
48 Points
Due Date________
1. A ____________ vehicle uses 2 individual power sources to provide energy for propulsion.
2. A hybrid ______ - _____________ vehicle has an internal combustion engine and an electric drive
system combined into one vehicle power train.
3. The extremely high _____________ and high ____________ stored and generated by gas-electric hybrid
drive trains are the primary safety concerns when working on these vehicles.
4. About 110 years ago (1898) _____________ __________ built a car that
used a small internal combustion engine to spin a large electric generator.
5. The 6 major assemblies working in unison under the computer control to propel a hybrid vehicle and to
operate its electrical accessory systems are:
The high–voltage ______________ ________ (many cells wired in series)
The __________ - _______________ (that can change functions between propulsion & generation)
The __________ __________ _________ (high voltage electronics to either invert or convert ac & dc)
The ____________ __________ ______ (an electronic control unit that monitors and controls)
___________ ____________ (large, insulated conductors, often bright orange in color)
The ______________ ______________ ___________ [ICE] (either gasoline or diesel for highway speeds)
6. The gas-electric hybrid uses a conventional _________ ____________ system to fuel the engine.
7. The motor-generator is used to both ____________ the vehicle and to help ________ the vehicle.
8. A vehicle that uses the motor-generator to initially accelerate and only runs the engine when the
battery pack becomes discharged is known as a: [ ] full hybrid [ ] mild hybrid
9. A vehicle propelled by its internal combustion engine only and then shuts it down for coasting, braking,
or stopping and then quickly restarts it when the brake pedal is released is a: [ ] full hybrid [ ] mild hybrid
10. Mild hybrids often have a ____ or a ____ volt electrical accessory system for EPS & HVAC.
11. When describing or classifying Hybrid Drive Train Configurations:
Have a separate Generator & Traction Motor
[ ] series [ ] parallel [ ] series-parallel
Motor-Generator cannot simultaneously drive & recharge
[ ] series [ ] parallel [ ] series-parallel
Can use any combination of drive & recharge
[ ] series [ ] parallel [ ] series-parallel
12. ________ - ____ hybrids can be connected to 120 - volt home outlet to fully recharge the battery pack.
13-18. The 6 modes of a full hybrid drive system operation are:
_________________________
_________________________
_________________________
_________________________
_________________________
_________________________
19. ______________________ braking uses the kinetic energy of normal stopping to recharge the
high voltage battery pack. During quick, hard braking the conventional hydraulic system is used.
20. Hybrids use 2 voltage systems, the high-voltage system for the drive system and a ___ - volt system
for the vehicle’s conventional electrical & electronic components – including the computer systems.
21. The hybrid high-voltage system can range from ______ to ______ volts ac or dc…That’s deadly!
22. High-voltage power cables are large in diameter and easily identified by their bright _________ color.
23-26. The full hybrid motor-generator or “MG” has 4 basic functions:
Helps power the _________ _________ and propel the vehicle
__________________ the high-voltage battery pack
_____________ the internal combustion engine
Helps to _________ and ________ the vehicle
27. The “MG” is usually a synchronous ac, permanent __________,
brushless motor-generator design.
28. A __________________ can step dc voltage either up or down.
29. An __________________ can either change dc to ac or ac to dc.
30. The __________ _____________ is a planetary gearset used to control the transfer of power through the
hybrid drive train. It is computer-controlled.
31. For safety against short circuits and electrocution, ____________ __________ interrupters, impact
sensors or ___________ switches and high voltage fuses are used in hybrid systems.
32. Hybrid systems can be cooled by ______________ coolant, by ________ circulation, and by a separate
R-134a refrigerant cooling system.
33. The hybrid power display informs the driver with a __________ __________ light, a hybrid __________
warning light, a ______________ ________ warning light, and a conventional MIL.
34. Besides wearing safety glasses, removing all conductive jewelry, and creating a high-voltage buffer zone
when working on hybrids, OHSA-approved gloves with a _________ volt insulation value must be worn.