1 Prius: Latin word meaning "to go before" or "before its predecessors.” Prius = Hybrid Pioneer
Aug 20, 2015
Objectives1. Definition of a Hybrid System2. Main Hybrid Systems Components3. Classification of Hybrids4. Types of Hybrid Drivetrain
Source: www.hybridcenter.org 3
Hybrid Systems DefinitionDefinition
“A hybrid is the combination of two or more different things, aimed at achieving a particular objective or goal”
Hybrid Vehicle “A hybrid electric vehicle combines an internal
combustion engine and an electric motor powered by batteries, merging the best features of today's combustion engine cars and electric vehicles.”
Source: www.hybridcenter.org 4
Key Components
Source: www.hybridcenter.org 5
1. ICE2. Generator3. The Inverter4. Power Splitter5. Electric Motor6. Battery Pack7. Electronic Modules
Steps for Hybridization
1. Idle-off capability 2. Regenerative braking capacity 3. Power Assist and Engine downsizing (“mild"
hybrid)
4. Electric-only drive ("full" hybrid)
5. Extended battery-electric range ("plug-in" hybrid)
Source: www.hybridcenter.org 6
Hybrids Drivetrains
Source: www.hybridcenter.org 13
Series/ Engine Assist• Only the electric motor is used to propel the vehicle at very low speeds
• When desiring greater speeds, the gasoline motor kicks in• Most suited for urban lifestyle and driving around the city
Parallel/ Electric Assist• Both the Electric Motor and Gasoline Engine generate power to propel vehicle
• More suited for highway driving due to the fact that the electric motor only kicks in when the gasoline engine requires an additional boost
Parallel/Series – Two Mode• a combination of the petroleum and electric assist engines uses twin electric motors ideal for both low and high speed driving
Wrap-upHybrid System Definition
Internal combustion engine and an electric motor powered by batteries
Main Hybrid Systems Components: engine, electric motors, generators, inverter, power splitter, battery pack , electronics
Classification1. Conventional Vehicle2. Mild Hybrid3. Full Hybrid4. Plug-in Hybrid
Types of Drivetrains1. Series – Engine Assist2. Parallel – Electric Assist 3. Parallel/Series – Two Mode
Source: www.hybridcenter.org 14