Podcast
Questions and Answers
What causes the vacuum inside the cylinder during the intake stroke?
What causes the vacuum inside the cylinder during the intake stroke?
- The movement of the piston downwards (correct)
- The opening of the inlet valve
- The closing of the inlet valve
- The burning of the air-fuel mixture
What happens to the pressure inside the cylinder during the compression stroke?
What happens to the pressure inside the cylinder during the compression stroke?
- The pressure remains constant at atmospheric pressure
- The pressure fluctuates between high and low values
- The pressure increases as the volume decreases (correct)
- The pressure decreases as the volume increases
What is the purpose of the spark plug in an SI engine?
What is the purpose of the spark plug in an SI engine?
- To open and close the intake and exhaust valves
- To ignite the air-fuel mixture at the end of the compression stroke (correct)
- To measure the temperature and pressure inside the cylinder
- To lubricate the moving parts of the engine
What is the purpose of the exhaust valve during the power stroke?
What is the purpose of the exhaust valve during the power stroke?
What is the compression ratio of a typical SI engine?
What is the compression ratio of a typical SI engine?
What happens to the temperature and pressure inside the cylinder during the combustion/expansion stroke?
What happens to the temperature and pressure inside the cylinder during the combustion/expansion stroke?
What is the purpose of the intake stroke in a four-stroke spark ignition engine?
What is the purpose of the intake stroke in a four-stroke spark ignition engine?
Which stroke in a four-stroke spark ignition engine involves combustion of the fuel-air mixture?
Which stroke in a four-stroke spark ignition engine involves combustion of the fuel-air mixture?
How many revolutions of the crankshaft are required to complete one full cycle in a four-stroke spark ignition engine?
How many revolutions of the crankshaft are required to complete one full cycle in a four-stroke spark ignition engine?
What is the purpose of the exhaust stroke in a four-stroke spark ignition engine?
What is the purpose of the exhaust stroke in a four-stroke spark ignition engine?
What is the process of converting chemical energy into mechanical energy called in a four-stroke spark ignition engine?
What is the process of converting chemical energy into mechanical energy called in a four-stroke spark ignition engine?
What is the purpose of the compression stroke in a four-stroke spark ignition engine?
What is the purpose of the compression stroke in a four-stroke spark ignition engine?
What is the purpose of the exhaust stroke?
What is the purpose of the exhaust stroke?
What is a key difference between a supercharger and a turbocharger?
What is a key difference between a supercharger and a turbocharger?
What is the relationship between engine speed and compressor pressure in a turbocharger system?
What is the relationship between engine speed and compressor pressure in a turbocharger system?
What is the purpose of the waste gate valve in a turbocharger system?
What is the purpose of the waste gate valve in a turbocharger system?
What is the main disadvantage of a turbocharger system compared to a naturally aspirated engine?
What is the main disadvantage of a turbocharger system compared to a naturally aspirated engine?
What is the relationship between the peak pressure in the exhaust system and atmospheric pressure in a turbocharger system?
What is the relationship between the peak pressure in the exhaust system and atmospheric pressure in a turbocharger system?