Erj Ch. 31 Engine Performance Systems Exam Questions & Answers (Grade A+).docx

Erj 2016-1522 Ch. 31 Engine
Performance Systems Exam
Questions & Answers (Grade A+)
Question 1 Which of the following is a feature of an enhanced EVAP
system monitor?
1) purge flow sensor connected to the vacuum hose between the
canister surge solenoid and the intake manifold
2) specially designed fuel tank filler cap
3) secondary air injection system
4) leak detection pump -
correct answer ✅specially designed fuel tank filler cap


Question 2 Which job is a function of the ignition system?
1) engaging the starter motor
2) generating a spark with enough heat to ignite the fuel
3) monitoring the air/fuel ratio
4) controlling air flow to the engine -
correct answer ✅generating a spark with enough heat to ignite
the fuel


Question 3 What is the purpose of firing order?
1) to remove dirt from the fuel
2) to generate sufficient spraying force

, Erj 2016-1522 Ch. 31 Engine
Performance Systems Exam
Questions & Answers (Grade A+)
3) to ensure the spark occurs at the end of the compression stroke
4) to ensure the correct injector pulse width -
correct answer ✅to ensure the spark occurs at the end of the
compression stroke


Question 4 Which of the following is an EI (electronic ignition)
system?
1) MI (magneto ignition)
2) DI (distributor ignition)
3) MSI (multispark ignition)
4) GCI (ground circuit ignition) -
correct answer ✅DI (distributor ignition)


Question 5 When is it necessary to complete a trip?
1) to warm up the engine
2) to enable a monitor to test or repair a component
3) to bring the engine into closed loop operation
4) to bring the engine into open loop operation -
correct answer ✅to enable a monitor to test or repair a
component