Workplace Training

Engine Parts Quiz: Identify Every Component

Moderate2-5mins

This quiz helps you identify engine system components fast and check what each part does. If you want more practice, try our parts of an engine quiz for a tougher mix, or focus on fluids with the engine oil system quiz. For road safety know-how beyond the hood, test yourself with the car warning lights quiz.

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Papercraft style engine parts illustration with gears pistons valves on golden yellow background
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1Which component converts linear motion of the piston into rotational motion in an engine?
2What is the primary fun<wbr>ction of a spark plug?
3Which component houses the cylinders and supports the crankshaft and camshaft?
4Which part seals the combustion chamber between the cylinder head and engine block?
5Which component circulates engine oil to lubricate bearings and moving parts?
6Which component filters contaminants from engine oil?
7Which component controls the intake and exhaust valves by converting rotational motion into reciprocating motion?
8Which component mixes air and fuel before entering the combustion chamber in carbureted engines?
9Which component removes heat from the engine coolant?
10Which part regulates engine temperature by controlling coolant flow to the radiator?
11Which component directs exhaust gases away from the engine?
12Which component distributes high voltage from the ignition coil to the spark plugs?
13Which part connects the engine to the transmission and helps smooth out torsional vibrations?
14Which component stores fuel and supplies it to the engine?
15Which component injects fuel into the combustion chamber in modern engines?
16Which part provides the air intake path to the throttle body?
17What component maintains timing between the crankshaft and camshaft?
18Which sensor measures engine coolant temperature?
19What is the fun<wbr>ction of a knock sensor?
20Which component recirculates exhaust gases back into the intake to reduce NOx emissions?
21Which part controls the amount of air entering the engine in electronic fuel injection systems?
22What is the primary purpose of a catalytic converter?
23Which component reduces intake air temperature after turbocharging?
24Which component synchronizes exhaust camshaft timing in many variable valve timing systems?
25Which component regulates oil pressure within the engine lubrication system?
26Which sensor measures the mass of air entering the engine?
27Which sensor measures the oxygen content in exhaust gases to help control fuel trim?
28Which component directs fresh air into the turbocharger?
29What component engages with the starter motor to crank the engine?
30Which component removes particulate matter from diesel exhaust?
31Which sensor measures the throttle plate position to aid in fuel management?
32What is the purpose of a camshaft position sensor?
33What does the positive crankcase ventilation (PCV) system do?
34Which component adjusts fuel pressure in the fuel rail to maintain consistent injection?
35What is the fun<wbr>ction of the oil slinger on a crankshaft?
36Which component helps dampen torsional vibrations on the crankshaft?
37What is the purpose of a swirl flap in an intake manifold?
38Which part splits the engine's firing order signals for multiple ignition coils?
39What is the fun<wbr>ction of the engine cooling system thermoswitch?
40Which sensor monitors the pressure inside the intake manifold?
41Which component measures engine oil level electronically?
42What is the role of the thermostat bypass in the cooling system?
43What is the purpose of a variable geometry turbocharger (VGT)?
44Which sensor measures nitrogen oxide concentrations for selective catalytic reduction systems?
45What advantage does a wideband air-fuel ratio sensor have over a narrowband oxygen sensor?
46Which valve enriches the air-fuel mixture during cold starts in carbureted engines?
47Which component controls idle speed by regulating air bypassing the throttle plate?
48Which device limits maximum boost pressure in turbocharged engines?
49Which sensor monitors the temperature of the air entering the engine?
50What system injects fresh air into the exhaust stream to reduce emissions during cold start?
51What benefit does a dual-mass flywheel provide in modern engines?
52Which type of spark plug can monitor combustion quality by measuring ionization current?
Learning Goals

Study Outcomes

  1. Understand Core Engine Functions -

    After completing the quiz, you will grasp how each engine system component contributes to overall performance and efficiency.

  2. Identify Key Engine Parts -

    You will accurately recognize and name critical engine parts during the engine system components quiz.

  3. Differentiate Automotive Engine Components -

    You will distinguish between mechanical engine systems parts, such as pistons, valves, and camshafts, based on their roles and locations.

  4. Apply Diagnostic Skills -

    You will leverage your knowledge from the engine component identification quiz to troubleshoot common engine issues.

  5. Analyze Component Interactions -

    You will explain how engine system parts work together to optimize vehicle performance and prevent mechanical failures.

Study Guide

Cheat Sheet

  1. Engine Block and Cylinder Configuration -

    The engine block houses the cylinders where combustion occurs, and its bore and stroke determine total displacement (Displacement = π×(bore/2)²×stroke×# of cylinders). Remember the mnemonic "Big Boys Smoke Cigars" (Bore, Block, Stroke, Cylinders) to recall these terms. Solid foundations: refer to SAE International and university engineering curricula for detailed designs.

  2. Cylinder Head and Valve Mechanism -

    The cylinder head contains intake and exhaust valves, guiding airflow during the four-stroke cycle: Intake, Compression, Power, Exhaust (mnemonic: "I Can Power Engines"). When tackling the engine system components quiz, remember valve clearances and cam overlap; these details often appear on automotive engine components tests.

  3. Crankshaft and Connecting Rod Dynamics -

    Connecting rods link pistons to the crankshaft, converting linear motion into rotation that drives the drivetrain. Understanding journal bearings and counterweights - highlighted in technical college courses - will boost your score on any mechanical engine systems quiz.

  4. Camshaft Timing and Drive Systems -

    The camshaft controls valve timing via lobes and is driven by belts, chains, or gears; mistiming can cause poor performance or engine damage. Note common timing belt replacement intervals (60k - 100k miles) recommended by OEMs for your engine component identification quiz.

  5. Lubrication and Oil Pump Function -

    Oil pumps maintain pressure (20 - 60 psi) to lubricate moving parts, reducing friction and heat. Examine oil gallery schematics from automotive research journals to spot the pump, filter, and relief valve during your engine system parts quiz.

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Michael HodgeEdTech Product Lead & Assessment Design SpecialistQuiz Maker
Updated Feb 23, 2026