Written automotive

The distance between the two widest points from the right to left sides of the body. (two words)

Shoulder Width

Opens and closes to control the flow of the air

intake valve

The brain of the computer control system. (three words)

Engine Control Unit

The distance from the centerline of the front wheels to the centerline of the rear wheels. (two words)

Wheelbase

Small cavity between the top of the piston and the bottom of the cylinder head. (two words)

Combustion Chamber

Steel, aluminum, fiberglass, plastic, or composite skin forming the outside of the vehicle.

Body Panels

The eyes, ears, and nose of the computer control system.

Sensors

A measurement from the outermost point on the front bumper to the outermost point on the rear bumper. (two words)

Overall Length

Also called full frame construction. (three words)

Body on frame

Keeps the valves closed when they do not need to be open. (two words)

Valve Springs

A system that produces friction to slow or stop the vehicle. (two words)

Braking System

A cylindrical component that transfers the energy of combustion to the connecting rod.

Piston

A system that allows the vehicle's wheels and tires to move up and down. (two words)

Suspension System

Uses various gear combinations or ratios, to multiply engine speed and torque to accommodate driving conditions.

Transmission

Sheet metal body panels are welded together to form the body and frame. (two words)

Unibody Construction

A large gear that is engaged by the starter and is attached to the back of the crankshaft.

Flywheel

This covers and seals the top of the cylinder. (two words)

Cylinder Head

A set of fitted parts designed to complete a specific function.

Assembly Kit

The total weight of the vehicle with a full tank of gas and no driver. (three words)

Curb Weight

Measurement from the ground to the highest point on the roofline. (two words)

Roof Height

A measurement of how much force is pushing down on the front and rear tires of the vehicle. (three words)

Tire Load Rating

Refers to the vehicle's frame and everything mounted to it except the body.

Chassis Frame

Provides energy to propel the vehicle and operate other vehicle systems.

Engine

This is a round hole that guides piston movement.

Piston Pin

Seals the small gaps that are around the sides of the piston.

Piston Rings

A system that allows the driver to control vehicle direction. (two words)

Steering System

The opening of valves is controlled by this.

Camshaft

Rating of how far a vehicle can travel on only one gallon of fuel. (two words)

Fuel Efficiency

The hands and arms of the computer control system.

Actuators

The metal casting that holds all the other engine parts in place.

Engine Block

The smallest removable item on your car.

Spark Plug

A group of related parts and assemblies that performs a specific function.

Subsystem

Allows the driver to engage or disengage the engine and manual transmission or transaxle.

Clutch Pedal