Engine Parts Diagram Quiz

Questions and Answers

What converts the reciprocating motion of the piston(s) into useful rotary motion?

Crankshaft (correct)

Cylinder Head

Piston

Connecting Rod

What is a piston?

Sliding metal 'plug' that transfers the energy of combustion to the connecting rod, and seals the cylinder.

What is the cylinder block?

The foundation of the engine that contains all of the other parts.

What is the function of a connecting rod?

The link between the crankshaft and the piston. Signup and view all the answers

What differentiates an intake valve from an exhaust valve?

Intake controls the flow of the air/fuel mixture into the engine, and exhaust controls the flow out of the engine. Signup and view all the answers

What does combustion refer to?

The burning of an air/fuel mixture. Signup and view all the answers

What is the role of the cylinder head?

Fits on top of the cylinder block to close off and seal the top of the cylinders. Signup and view all the answers

What does the connecting rod cap do?

Allows the installation of the connecting rod onto the crankshaft. Signup and view all the answers

What is compression in an engine?

The pressure placed on the air/fuel mixture. Signup and view all the answers

What is contained in the oil pan?

Engine oil for lubrication. Signup and view all the answers

What is the primary function of a camshaft?

Rotating lobes push the valves open. Signup and view all the answers

What do valve springs do?

Close the valve when the camshaft lobe is not causing the valve to open. Signup and view all the answers

What is the function of the harmonic balancer?

Reduces engine vibration and often serves as a pulley for drive belts. Signup and view all the answers

The spark plug is a device for firing the __________ in an internal combustion engine.

explosive mixture Signup and view all the answers

What is the role of an ignition coil?

Transforms the battery's low voltage to the thousands of volts needed to create an electric spark. Signup and view all the answers

What connects and synchronizes the crankshaft to the camshaft?

Timing belt or timing chain. Signup and view all the answers

What does the crankshaft position sensor do?

Measures speed and position of the crankshaft and reports to the engine computer. Signup and view all the answers

What does the ignition distributor do?

Sends spark to the correct cylinder based on firing order. Signup and view all the answers

What prevents oil leaks from the distributor?

Distributor o-ring. Signup and view all the answers

What is the valve cover designed to do?

Cover the top of the cylinder head. Signup and view all the answers

What does the valve cover gasket do?

Seals the oil to prevent leaks from the valve cover. Signup and view all the answers

What does the intake manifold do?

Distributes clean air to the cylinders. Signup and view all the answers

What does the water pump do?

Pumps coolant through the engine and radiator. Signup and view all the answers

What is the role of the exhaust manifold?

Routes exhaust gases out of the cylinder head and into the catalytic converter. Signup and view all the answers

What does the oil filter do?

Filters and cleans the engine oil. Signup and view all the answers

What does the camshaft sprocket do?

Is connected to the camshaft and driven by the timing belt. Signup and view all the answers

What is the oil drain plug used for?

Allows the technician to drain the engine oil. Signup and view all the answers

What does the head gasket do?

Seals the cylinder head to the engine block. Signup and view all the answers

What does the camshaft position sensor do?

Senses camshaft position and speed and sends this signal to the engine computer. Signup and view all the answers

What is the throttle position sensor used for?

Senses the position of the throttle plate in the throttle body. Signup and view all the answers

Study Notes

Engine Parts Overview

Crankshaft: Converts piston motion into rotary motion.
Piston: Transfers combustion energy to the connecting rod; seals the cylinder.
Cylinder Block: The foundational structure housing key engine components.
Connecting Rod: Connects the crankshaft and piston.
Intake/Exhaust Valve: Manages the flow of air/fuel mixture and exhaust gases.

Combustion and Pressure

Combustion: The chemical reaction of burning an air/fuel mixture.
Compression: The force exerted on the air/fuel mixture within the cylinder.

Engine Components

Cylinder Head: Seals the top of the cylinders and supports the valves.
Connecting Rod Cap: Facilitates the mounting of the connecting rod to the crankshaft.
Oil Pan: Holds engine oil, located beneath the cylinder block.

Valvetrain Mechanics

Camshaft: Operates valves via rotating lobes.
Valve Springs: Responsible for closing valves when not operated by the camshaft.
Valve Cover: Protects the valve train and seals the top of the engine.

Vibration and Torque Management

Harmonic Balancer: Reduces engine vibrations and often doubles as a pulley for drive belts.
Flywheel/Flexplate: Transfers torque from the crankshaft to the clutch or torque converter.

Ignition System

Spark Plug: Ignites the air/fuel mixture in the combustion chamber.
Ignition Coil: Converts low battery voltage into high voltage to create a spark.
Ignition Distributor: Directs the spark to the appropriate cylinder according to the firing order.

Engine Timing

Timing Belt/Chain: Synchronizes crankshaft and camshaft movement.
Crankshaft Position Sensor: Measures the crankshaft's speed and position, reporting to the engine computer.
Camshaft Position Sensor: Monitors the camshaft's position and sends data to the engine computer.

Sealing and Preventing Leaks

Distributor O-Ring: Prevents oil leaks from the distributor.
Valve Cover Gasket: Seals the valve cover to prevent oil leaks.
Oil Drain Plug: Used for draining engine oil during maintenance.
Oil Drain Plug Seal: Ensures no oil leaks from the drain plug.

Air Intake and Exhaust Management

Intake Manifold: Distributes airflow to the cylinders for combustion.
Intake Manifold Gasket: Seals the manifold to the cylinder head, avoiding vacuum leaks.
Exhaust Manifold: Directs exhaust gases from the cylinder head to the catalytic converter.

Cooling and Lubrication

Water Pump: Circulates coolant through the engine and radiator.
Oil Filter: Cleans and filters engine oil to ensure proper lubrication.

Additional Sensors

Throttle Position Sensor: Monitors the throttle plate position and communicates with the engine computer.
Head Gasket: Seals the cylinder head to the block, preventing leaks and maintaining compression.

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Description

Test your knowledge of engine components with this quiz. Each question focuses on a specific part of an engine, such as the crankshaft and piston, along with their definitions. Perfect for automotive students or enthusiasts.