Quiz on Engine Management System

What is the brain of the electronic engine management system?

• Igniters

• Actuators

• Sensors

• ECU

What are sensors in the electronic engine management system primarily responsible for?

• Generating power output

• Controlling engine idle speed

• Sending information to the ECM

• Injecting fuel into the cylinders

What is the purpose of actuators in the electronic engine management system?

• Send information to the ECM

• Control engine functions

• Detect engine conditions

• Perform output actions based on ECM signals

How does the ECM control the ignition timing in the engine?

• By increasing engine speed

• By adjusting the air-fuel ratio

• By controlling the throttle valve position

• Based on signals from sensors

What is the function of the idle speed control system in the engine management system?

• Maintain stable idle speed

• Increase engine power

• Reduce exhaust emissions

• Control fuel injection timing

What does the ECM do if it detects a malfunction in the engine management system?

• Ignore the malfunction

• Reduce engine power output

• Store diagnostic trouble codes

• Increase fuel consumption

What is the advantage of an electronic engine management system in terms of exhaust emissions?

• Have no effect on emissions

• Reduce exhaust emissions

• Cause fuel wastage

• Increase harmful emissions

How does the electronic engine management system ensure accurate air-fuel ratio and spark timing?

• By ignoring engine conditions

• By continuously providing precise signals to the engine

• By using fewer sensors

• By relying on mechanical adjustments

What is the benefit of stable idle speed control in the engine management system?

• Maximize fuel consumption

• Cause engine overheating

• Ensure smooth engine operation

• Increase engine load

Why does the ignition timing need to decrease under heavy engine load?

• To reduce engine power output

• To increase exhaust emissions

• To improve fuel economy

• To avoid spark knock