18 Questions
What is the ratio of brake horsepower to the power available at the fuel in an internal combustion engine?
Thermal efficiency
What is the minimum speed of an engine at no load called?
Idle speed
What is the amount of pressure generated during the power stroke of the engine called?
Mean Effective Pressure (MEP)
Which term refers to the series of events occurring one after the other in a definite order and repeating the event after the last one has occurred?
Cycle
Where is the spark plug or fuel injector housed in an internal combustion engine?
Cylinder head
What does the ratio of brake horsepower and indicated horsepower determine in an engine?
Mechanical efficiency
What is the main difference between a supercharger and a turbocharger?
A supercharger increases air pressure through engine drive while a turbocharger increases air pressure through exhaust gases.
What is the purpose of an intercooler in an engine?
To reduce the temperature of compressed gases before entering the engine.
What does an engine specification sheet typically include?
Engine performance characteristics like power and fuel consumption.
In terms of engine performance, what does a performance curve show?
Power, fuel consumption, and torque at various operating conditions.
Which of the following parameters is not typically found in piston specifications?
Brake horsepower
Why are superchargers more commonly used in gasoline engines than turbochargers?
Gasoline engines have lower exhaust gas energy compared to diesel engines.
What is the purpose of a turbocharger in an engine?
Increase the amount of air injected into the engine
How are running mates of pistons determined in an engine?
By splitting the firing order and pairing the numbers
What is the function of an intercooler in an engine system?
Cool down compressed air from the turbocharger
How does an internal combustion engine firing order affect engine performance?
It determines the engine's maximum power output
What does a high-pressure electric pump do in a fuel injection system?
Mixes precisely measured fuel and air
Why is piston displacement an important factor in determining an engine's specifications?
It affects the volume swept by all the pistons in the cylinders
Explore the functions and differences between superchargers and intercoolers in internal combustion engines. Learn about their roles in improving engine performance and efficiency. Topic 5 covers these key components in the context of engine design.
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