Ase Engine Repair

Which component of the engine management system is primarily responsible for controlling fuel injection timing and quantity?

• Oxygen sensor

• Engine Control Unit (ECU)

• Throttle body

• Fuel pump

What is the effect of a fouled spark plug on engine performance?

• It improves engine performance

• It has no effect

• It can cause the engine to run rough or misfire

• It increases the engine's horsepower

What is the primary function of a fuel injection system in an automotive engine?

• To lubricate the engine's moving parts

• To cool the engine

• To mix fuel with air to produce a combustible mixture

• To filter impurities from the fuel

Why is it important for an Engine Control Unit (ECU) to monitor and adjust the air-to-fuel ratio?

• To ensure the vehicle can reach maximum speeds

• To maintain optimal engine temperature

• To optimize engine performance and fuel efficiency

• To increase the loudness of the exhaust system

Tags

NGSS.MS-ETS1-2

What is the primary purpose of a turbocharger in an engine?

• To increase fuel efficiency by reducing engine size

• To reduce emissions by controlling exhaust flow

• To increase engine power by forcing more air into the combustion chamber

• To cool the engine by circulating extra air

Tags

NGSS.MS-PS2-1

The main function of the engine _______ is to let air in and out of the cylinders.

• Camshaft

• Valves

• Rocker arm

• Connecting Rod

A four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes to complete one operating cycle. What are the 4 basic steps in the correct order?

• Intake, Power , Compression, Exhaust

• Compression, Power, Intake, Exhaust

• Intake, Exhaust, Compression, Power

• Intake, Compression, Power, Exhaust

What is the primary function of the catalytic converter in an automotive engine?

• To increase engine power

• To reduce harmful emissions

• To improve fuel efficiency

• To cool the engine

Tags

NGSS.HS-ESS3-4

NGSS.HS-ETS1-3

Which component in an engine is responsible for converting chemical energy into mechanical energy?

• Alternator

• Starter motor

• Piston

• Fuel injector

What is the role of the oxygen sensor in an engine management system?

• To measure engine temperature

• To monitor exhaust gases for optimal fuel mixture

• To control the ignition timing

• To regulate oil pressure