Some vehicles use motor generators that perform both the drive and regeneration functions. Onboard charger: Takes the incoming AC electricity supplied via the charge port and converts it to DC power for charging the traction battery. It also communicates with the charging equipment and monitors battery characteristics such as voltage, current, temperature, and state of charge while charging the pack. Power electronics controller: This unit manages the flow of electrical energy delivered by the traction battery, controlling the speed of the electric traction motor and the torque it produces.
The intake stroke starts the combustion process by allowing the engine to take in a cylinder-full of air and gasoline. After this process, air is compressed through the movement of the pistons in the engine. Upon compression, a spark plug emits a spark to ignite the gasoline and causes a controlled explosion in the cylinder. The resulting explosion causes the piston to move downward, which causes the exhaust valve to open and release exhaust out the tailpipe.
Petrol, also known as "crude oil," consists of carbon and hydrogen atoms that split apart when burned. The combustion process in a petrol engine occurs when the carbon and hydrogen combine with oxygen from the air to make carbon dioxide gas and water. They both use internal combustion engines. A gasoline car typically uses a spark-ignited internal combustion engine, rather than the compression-ignited systems used in diesel vehicles.
In a spark-ignited system, the fuel is injected into the combustion chamber and combined with air. Although gasoline is the most common transportation fuel, there are alternative fuel options that use similar components and engine systems. Learn about alternative fuel options.
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