Gasoline Engine Components and Functions

The video tutorial covers the components and functioning of a four-stroke engine, focusing on the valve mechanism. It explains the four-stroke cycle, including intake, compression, power, and exhaust strokes. The tutorial details the components of the valve mechanism, such as timing gear, camshaft, and rocker arm, and describes how these components work together to control the opening and closing of valves. The video concludes with a brief mention of different types of valve mechanisms and their advantages and disadvantages.

What is one of the main components that make up a gasoline engine?

• Exhaust pipe

• Valve mechanism

• Radiator

• Fuel injector

How many strokes are required to complete one combustion cycle in a four-stroke engine?

• Four

• Five

• Three

• Two

During which stroke does the intake valve open?

• Intake stroke

• Exhaust stroke

• Power stroke

• Compression stroke

What must happen to the exhaust valve during the exhaust stroke?

• It must be removed

• It must partially open

• It must open

• It must remain closed

What is the purpose of the Tensioner in the valve mechanism?

• To cool the engine

• To reduce fuel consumption

• To increase engine speed

• To maintain timing chain tension

Which component is responsible for opening the valves in a single overhead camshaft (SHC) engine?

• Crankshaft

• Timing belt

• Camshaft

• Piston

What connects the crankshaft to the camshaft in the valve mechanism?

• Exhaust pipe

• Fuel line

• Timing chain

• Cooling system

What happens when the camshaft lobe pushes the rocker arm?

• The valve closes

• The valve opens

• The engine stops

• The piston moves

What is the ratio of gear teeth between the camshaft and the crankshaft?

• 1:2

• 1:1

• 3:1

• 2:1

What will be discussed in the next section after the valve mechanism?

• Different valve mechanisms and their pros and cons

• Types of engines

• Engine cooling systems

• Fuel types