Key Hybrid Electric Vehicle Components

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A hybrid electric automobile is powered by both an electric engine and a gasoline engine. The battery of it is charged by the regenerative braking mechanism and the gasoline engine. Its battery can not just power headlights and sound system and other auxiliary loads, but it can also reduce idling. Together, the features mentioned here bring about superior fuel economy and that too, without sacrificing the performance of electric hybrid cars.


The supplementary battery provides the electricity required to start it before its electric vehicle battery is in use, and it powers the auto’s accessories too.

Electric Generator

It generates electricity out of the wheels when you apply the brake, and transfers that energy to the pack of traction batteries (also known as electric vehicle batteries). Some autos utilize motor generators, which do the drive function and regeneration function.

Exhaust System

This component channels the flue gases out of the vehicle’s engine through its tailpipe. The three-way catalyst in this vehicle is designed for reducing emissions out of the engine in its exhaust system.

Traction Motor

With power derived from the pack of traction batteries, this motor powers the automobile’s wheels.

Fuel Tank

This component stores gasoline onboard until the vehicle’s engine requires it.

Fuel Filling Component

A nozzle part from a dispenser of high-pressure hydrogen connects to the vehicle’s receptacle to fill its tank. For an easy explanation, this component can be termed “fuel filler”. Do not go by the technical descriptor, this is just an opening to fill fuel into the vehicle.

Internal Combustion or Gasoline Engine

In this design, fuel is put into the vehicle’s combustion chamber or intake manifold, in which it is blended with air. The spark coming from a component ignites this combination of air and fuel.

Thermal System

The system maintains an appropriate operating range of temperature for the vehicle engine, power electronics, electric motor, and other parts.


The vehicle transmission converts mechanical energy from its traction motor and/or engine to cause the wheels to work.

Pack of Traction Batteries

This component stores electric power to be used by the traction motor of the vehicle.

Power Electronics Controller

The electrical energy flow, which its traction battery delivers, is managed by this particular unit. This management then controls the traction motor’s speed as well as the torque which it creates.

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