Understanding Engine Top End Components

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

• To house the crankshaft

• To seal the top of the cylinder and contain the combustion process

• To support the engine block

• To regulate the engine's temperature

Which component is NOT part of the valvetrain?

• Camshaft

• Rocker arm

• Piston

• Valve spring

What is the purpose of the camshaft in an engine?

• To convert fuel into energy

• To open and close the engine's valves

• To cool the engine

• To increase the engine's compression ratio

Which of the following is a common material used for cylinder head construction?

• Plastic

• Aluminum alloy

• Wood

• Rubber

What is the typical shape of intake and exhaust ports in a high-performance engine?

• Square

• Circular

• Oval

• Triangular

In a dual overhead camshaft (DOHC) engine, how many camshafts are typically used per cylinder head?

• One

• Two

• Three

• Four

What is the primary advantage of using a multi-valve cylinder head design?

• Increased engine weight

• Improved fuel economy

• Enhanced airflow and performance

• Simplified engine design

Which equation best represents the relationship between camshaft lift and valve lift?

• Valve lift = Camshaft lift

• Valve lift = 2 \times Camshaft lift

• Valve lift = \frac{1}{2} \times Camshaft lift

• Valve lift = \sqrt{Camshaft lift}

What is the function of the valve spring in the valvetrain?

• To open the valves

• To close the valves

• To lubricate the valves

• To cool the valves

Which of the following camshaft specifications directly affects the engine's power band?

• Camshaft material

• Camshaft duration

• Camshaft color

• Camshaft weight