Automotive Engine Performance Quiz

What is the purpose of the spark plug in an automotive engine?

• Cool down the engine

• Increase fuel efficiency

• Control the steering

• Ignite the air-fuel mixture

Tags

NGSS.MS-PS3-5

Explain the concept of engine displacement and its impact on performance.

• Engine displacement is the total volume of air and fuel that an engine can push through its cylinders, and it impacts performance by affecting power and torque output.

• Engine displacement is the speed at which the engine operates, and it impacts performance by affecting the top speed of the vehicle.

• Engine displacement is the size of the engine's exhaust system, and it impacts performance by affecting emissions.

• Engine displacement is the amount of fuel efficiency in an engine, and it impacts performance by affecting fuel consumption.

What is the role of the fuel injector in the engine's performance?

• The fuel injector is used to regulate the air intake into the engine

• The fuel injector is responsible for delivering the right amount of fuel into the combustion chamber at the right time.

• The fuel injector is responsible for cleaning the engine's exhaust system

• The fuel injector is designed to cool down the engine during operation

Describe the function of the camshaft in an automotive engine.

• It regulates the fuel injection in the engine

• It controls the temperature of the engine

• It is responsible for steering the vehicle

• It controls the opening and closing of the engine's intake and exhaust valves.

How does the air-fuel ratio affect the performance of an engine?

• It decreases the combustion efficiency

• It affects the combustion efficiency and power output.

• It has no effect on the engine performance

• It only affects the fuel consumption

Tags

NGSS.HS-PS3-4

Explain the difference between horsepower and torque in an engine.

• Horsepower is a measure of an engine's ability to do work over time, while torque is a measure of the twisting force that the engine generates.

• Horsepower is only important for trucks and torque is only important for sports cars.

• Horsepower and torque are essentially the same thing and can be used interchangeably.

• Horsepower is a measure of an engine's top speed, while torque is a measure of the engine's fuel efficiency.

What is engine knocking and how does it affect performance?

• Engine knocking is the normal sound produced by a well-functioning engine and has no effect on performance.

• Engine knocking is the result of using high-quality fuel and can improve engine performance.

• Engine knocking is caused by a faulty exhaust system and can improve fuel efficiency.

• Engine knocking is the metallic sound produced when the air-fuel mixture in the cylinders ignites at the wrong time. It can affect performance by causing loss of power, reduced fuel efficiency, and potential damage to the engine.

Discuss the importance of engine timing in relation to performance.

• Engine timing only affects the color of the car, not its performance

• Engine timing is crucial for the proper functioning of the engine, as it ensures that the valves open and close at the right time in relation to the pistons. This directly impacts the engine's performance, fuel efficiency, and emissions.

• Engine timing has no impact on performance, it's just a minor detail

• Engine timing is important for performance, but it doesn't affect fuel efficiency or emissions

Tags

NGSS.HS-PS3-3

What are the common causes of engine misfires and how do they impact performance?

• Dirty windshield and wiper blades, leading to reduced visibility

• Excessive tire wear, resulting in poor traction and handling

• Spark plug issues, fuel delivery problems, vacuum leaks, and ignition system faults. Engine misfires can lead to reduced power, rough idling, and poor fuel economy.

• Loose gas cap, causing fuel evaporation and decreased fuel efficiency

Tags

NGSS.HS-PS1-5

Explain the concept of engine tuning and its impact on performance.

• Engine tuning has no impact on performance

• Engine tuning decreases horsepower and torque

• Engine tuning can significantly impact performance by increasing horsepower, torque, and fuel efficiency.

• Engine tuning only impacts the color of the car

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS3-3