WorksheetsD&R Ignition Management Quiz 2
Total questions: 28
Worksheet time: 14mins
What is the primary function of the ECU in a spark ignition engine?
Control fuel injection
Monitor exhaust emissions
Control ignition timing
All of the above
Which sensor measures the amount of air entering the engine?
Oxygen sensor
Throttle position sensor
Mass airflow sensor
Coolant temperature sensor
What does a high fuel trim value indicate?
Rich fuel mixture
Lean fuel mixture
Normal operation
Faulty sensor
Which component is responsible for generating the spark in a spark ignition engine?
Fuel injector
Ignition coil
ECU
Oxygen sensor
What is the purpose of the knock sensor?
Detect engine misfires
Measure air-fuel ratio
Detect engine knocking
Control idle speed
Which waveform represents a healthy ignition coil signal?
Waveform A
Waveform B
Waveform C
Waveform D
What does the throttle position sensor (TPS) measure?
Engine speed
Throttle angle
Air temperature
Fuel pressure
Which component adjusts the air-fuel mixture in response to engine load?
Oxygen sensor
Mass airflow sensor
Fuel injector
ECU
What is the function of the camshaft position sensor?
Measure engine speed
Determine camshaft position
Control fuel injection timing
Monitor exhaust emissions
Which part of the ignition system is labeled as ‘A’ in the diagram below?
Spark plug
Ignition coil
What does a low voltage reading from the oxygen sensor indicate?
Rich mixture
Lean mixture
Normal operation
Faulty sensor
Which component is responsible for controlling the idle speed of the engine?
Throttle position sensor
Idle air control valve
Mass airflow sensor
Knock sensor
What is the purpose of the crankshaft position sensor?
Measure engine temperature
Determine crankshaft position
Control ignition timing
Monitor fuel pressure
What does the term ‘dwell period’ refer to in ignition systems?
Time the spark plug fires
Time the ignition coil charges
Time the engine idles
Time the fuel injectors open
Which sensor provides data to adjust the air-fuel ratio for optimal combustion?
Knock sensor
Oxygen sensor
Throttle position sensor
Coolant temperature sensor
What is the function of the fuel pressure regulator?
Increase fuel pressure
Decrease fuel pressure
Maintain constant fuel pressure
Measure fuel pressure
Which part of the ignition system is in the diagram below?
Spark plug
Ignition coil
Distributor
ECU
What does a high voltage reading from the oxygen sensor indicate?
Rich mixture
Lean mixture
Normal operation
Faulty sensor
What is the purpose of the coolant temperature sensor?
Measure engine temperature
Control fuel injection timing
Monitor exhaust emissions
Adjust ignition timing
Which waveform represents a healthy crankshaft position sensor signal?
Waveform A
Waveform B
Waveform C
Waveform D
What does the term ‘short-term fuel trim’ refer to?
Immediate adjustments to air-fuel ratio
Long-term adjustments to air-fuel ratio
Adjustments to ignition timing
Adjustments to idle speed
Which component adjusts the ignition timing based on engine load and speed?
Knock sensor
Throttle position sensor
ECU
Mass airflow sensor
What is the function of the intake air temperature sensor?
Measure air temperature entering the engine
Measure engine temperature
Control fuel injection timing
Monitor exhaust emissions
Which part of the ignition system is in the diagram below?
Spark plug
Ignition coil
Distributor
ECU
What does a fluctuating oxygen sensor signal indicate?
Normal operation
Faulty sensor
Rich mixture
Lean mixture
Which component is responsible for controlling the fuel injectors?
Throttle position sensor
Mass airflow sensor
ECU
Knock sensor
What is the purpose of the exhaust gas recirculation (EGR) valve?
Reduce exhaust emissions
Increase engine power
Control fuel pressure
Measure air-fuel ratio
What does the term ‘long-term fuel trim’ refer to?
Immediate adjustments to air-fuel ratio
Long-term adjustments to air-fuel ratio
Adjustments to ignition timing
Adjustments to idle speed
