IC Engine Lab Quiz

Mixture requirements during starting of SI engine is

• Rich

• Lean

• Stoichiometry

• Best power

Stoichiometric air fuel ratio for petrol is

• 14:1

• 12:1

• 16:1

• 8:1

A crankshaft's job in an engine is to:

• deliver fuel to the cylinders

• change linear motion into rotational motion

• keep cylinder heads in place

• To deliver the power to piston

What direction is the piston traveling during the Power-Stroke?

• Up

• Down

• Left

• Right

What position are the valves in during the intake stroke

• Intake Closed, Exhaust Closed

• Intake Open, Exhaust Open

• Intake Open, Exhaust Closed

• I have no idea

Cylinder volume with the piston at bottom dead center (BDC) compared to cylinder volume with the piston at top dead center (TDC)

• Compression Ratio

• Piston Comparison

• Pressure Ratio

• Engine Displacement

in the Power stroke of an engine, the fuel and air is compressed and ignited by the?

• high pressure
• spark plug
• piston movement
• high temperature

Camshaft turns at what speed compared to the crankshaft

• Same speed
• 1/2 Speed
• 2/1 Speed
• 1/1 Speed

The length the piston moves from top to bottom or bottom to top is called

• Stroke
• Bore
• Movement
• Lenght

In an actual 4 stroke SI engine, exhaust valve opens...

• At TDC

• At BDC

• Before TDC

• Before BDC