Automotive Vocabulary for Engine Repair Basics

EGR (Exhaust Gas Recirculation) Valve

• Increases fuel efficiency by adding more fuel to the combustion process.

• Reduces nitrogen oxide emissions by recirculating a portion of exhaust back into the intake manifold.

• Enhances engine power by increasing air intake.

• Improves exhaust sound quality by modifying exhaust flow.

Muffler

• Reduces noise produced by exhaust gases exiting the vehicle.

• Increases the speed of the vehicle by enhancing engine performance.

• Filters out harmful emissions from the exhaust system.

• Improves fuel efficiency by optimizing air intake.

Piston

• A stationary component that holds the fuel-air mixture.

• A moving component within the cylinder that compresses the fuel-air mixture and transfers power to the crankshaft.

• A type of valve that regulates the fuel flow.

• A component that cools the engine by circulating coolant.

Fuel Injector

• Sprays fuel into the combustion chamber in a fine mist for efficient burning.

• Stores fuel until it is needed for combustion.

• Filters impurities from the fuel before it enters the engine.

• Regulates the temperature of the fuel before injection.

Thermostat

• Regulates coolant flow based on engine temperature to prevent overheating.

• Controls the air conditioning system in a vehicle.

• Measures the outside temperature for climate control.

• Acts as a fuel injector for the engine.

Alternator

• Generates electricity to recharge the battery while the engine runs.

• Converts mechanical energy into electrical energy for the starter motor.

• Stores electrical energy for use when the engine is off.

• Regulates the engine temperature by circulating coolant.

Coolant Reservoir

• A tank that holds excess coolant for use when needed.

• A device that measures the temperature of the coolant.

• A filter that cleans the coolant before it circulates.

• A pump that circulates the coolant through the engine.

Maintenance Schedule

• A recommended timeline for routine inspections and services to keep a vehicle running smoothly.

• A list of all the parts that need to be replaced in a vehicle.

• A guide for choosing the right fuel for your vehicle.

• A schedule for washing and waxing the exterior of the vehicle.

Flywheel

• A device that converts electrical energy into mechanical energy.

• A heavy wheel that stores rotational energy and helps smooth out engine operation.

• A component that regulates the flow of fuel in an engine.

• A part that increases the speed of a vehicle's engine.

Shift Linkage

• Connects the gear shifter to the transmission, allowing for gear changes.

• Controls the speed of the vehicle by adjusting the throttle.

• Regulates the fuel flow to the engine for optimal performance.

• Links the brake pedal to the braking system for effective stopping.