auto and shop info

What is the primary function of an internal combustion engine?

To convert chemical energy stored in fuel into mechanical energy that propels a car.

What is a camshaft?

A mechanical component that controls the opening and closing of the engine’s valves.

What does the combustion chamber do in an internal combustion engine?

It is where the air-fuel mixture is burned to produce heat energy.

What role does the crankshaft play in an engine?

It converts the reciprocating motion of the pistons into rotary motion.

What is the purpose of the water pump in an engine’s cooling system?

To circulate the coolant through the engine and radiator.

What is the difference between a single overhead cam (SOHC) and a double overhead cam (DOHC) engine?

SOHC has one camshaft for all valves; DOHC has two camshafts, one for intake and one for exhaust valves.

What is the primary purpose of the lubrication system in a car engine?

To provide oil to the engine’s moving parts to reduce friction, heat, and wear.

What are the three main components an internal combustion engine needs to operate effectively?

Air-fuel mixture, ignition timing, and combustion.

What is the stoichiometric ratio for gasoline engines?

Approximately 14.7:1, meaning 14.7 parts air to one part fuel.

What is ignition timing and why is it important?

The precise moment when the air-fuel mixture is ignited, crucial for optimal engine performance.

What is a distributorless ignition system (DIS)?

A system that uses sensors to determine the precise timing for ignition, eliminating the need for a distributor.

What is the main function of the exhaust system?

To remove exhaust gases from the engine and reduce harmful emissions.

What are the main parts of the brake system?

Brake pedal, master cylinder, brake fluid reservoir, brake lines, and brake assemblies.

What is the purpose of diesel fuel in a diesel engine?

Diesel fuel ignites due to heat generated from compressing air in the cylinder.

What is a carburetor?

An older type of fuel system that mixes fuel and air before delivering it to the engine.

What does the powertrain control module (PCM) do?

It controls the fuel system and adjusts fuel delivery based on driving conditions.

What is a torque converter?

A device in an automatic transmission that allows the engine to keep running while the vehicle is stopped.

What is a CV joint?

A type of mechanical joint used in vehicles to transmit power from the engine to the wheels at a constant speed.

What are rabbet and edge chisels used for?

To create grooves and shape edges in woodworking.

What is MIG welding?

A welding process that uses a continuous solid wire electrode fed through a welding gun.

What is significant about the four-stroke cycle in an engine?

It involves four stages: intake, compression, combustion, and exhaust.

How do ball joints function in a vehicle's suspension system?

They allow the steering knuckle to move up and down and side to side.