ENGINE TECH QUIZIZZ

Which part of the engine converts linear motion into rotational motion?

• Crankshaft

• Camshaft

• Piston

• Timing belt

Answer explanation

The crankshaft is the component that converts the linear motion of the pistons into rotational motion, enabling the engine to turn the wheels. The other options do not perform this function.

What is the primary function of the cylinder head in an engine?

• To house the crankshaft

• To store engine oil

• To control the intake and exhaust valves

• To support the pistons

Answer explanation

The primary function of the cylinder head is to control the intake and exhaust valves, allowing air and fuel in and exhaust gases out, which is crucial for the engine's operation.

Which of the following components is responsible for controlling the timing of the engine's valves?

• Timing belt

• Alternator

• Crankshaft

• Oil pump

Answer explanation

The timing belt is responsible for synchronizing the rotation of the crankshaft and camshaft, ensuring that the engine's valves open and close at the correct times during the engine cycle.

What is the purpose of the camshaft in an engine?

• To pump fuel into the cylinders

• To rotate the crankshaft

• To control valve timing

• To circulate coolant

Answer explanation

The camshaft's primary function is to control valve timing, ensuring that the engine's intake and exhaust valves open and close at the correct times during the engine cycle, which is crucial for optimal performance.

Which part of the engine is responsible for compressing the air-fuel mixture before ignition?

• Crankshaft

• Piston

• Timing gear

• Fuel injector

Answer explanation

The piston compresses the air-fuel mixture in the cylinder before ignition, creating the necessary pressure for combustion. The crankshaft converts linear motion to rotational, while the timing gear and fuel injector serve different functions.

What does the oil pump do in an engine?

• Circulates engine oil to lubricate moving parts

• Adds fuel to the combustion chamber

• Compresses air into the cylinder

• Controls valve timing

Answer explanation

The oil pump is crucial in an engine as it circulates engine oil to lubricate moving parts, reducing friction and wear, which helps maintain engine performance and longevity.

Which part of the engine is responsible for controlling the intake and exhaust gases?

• Pistons

• Crankshaft

• Valve train

• Timing chain

Answer explanation

The valve train is responsible for controlling the intake and exhaust gases in an engine. It includes components like valves and camshafts that open and close to allow air and fuel in and exhaust out.

What is the purpose of the engine's flywheel?

• To cool the engine

• To store electrical energy

• To maintain smooth engine operation by balancing the crankshaft

• To fuel the engine

Answer explanation

The flywheel's purpose is to maintain smooth engine operation by balancing the crankshaft. It stores rotational energy, helping to reduce fluctuations in engine speed and ensuring consistent performance.

Which of these components is part of the engine's cooling system?

• Alternator

• Thermostat

• Distributor

• Air filter

Answer explanation

The thermostat is a key component of the engine's cooling system, regulating the engine temperature by controlling coolant flow. The alternator, distributor, and air filter serve different functions unrelated to cooling.

The purpose of the valve lifter is to:

• Control the amount of fuel injected

• Open and close the engine's intake and exhaust valves

• Generate power for the electrical system

• Cool the engine

Answer explanation

The valve lifter's primary function is to open and close the engine's intake and exhaust valves, allowing for proper airflow and engine operation. This is essential for the engine's performance.