Internal Combustion Engine Basics

Play an AI-generated podcast conversation about this lesson

What is the primary principle of operation for a diesel engine?

Force multiplied by distance

Compression ignition (correct)

Work equals force divided by distance

Spark ignition

What is the unit of measurement for force in the Imperial system?

Newtons

Pounds (correct)

Foot-pounds

Meters

What is the formula for work?

Work = distance divided by force

Work = force squared

Work = force divided by distance

Work = force multiplied by distance (correct)

What type of ignition is used with fuels such as gasoline and propane?

Spark ignition Signup and view all the answers

What is the definition of force?

The push or pull that attempts to move an object Signup and view all the answers

What is the unit of measurement for work in the Imperial system?

Foot-pounds Signup and view all the answers

What is the unit of measurement for torque in the metric system?

newton metres Signup and view all the answers

What is the formula to calculate the area of a cylinder?

Area = bore2 x 0.7854 Signup and view all the answers

What is the term used to describe the distance that a piston moves from top dead centre to bottom dead centre?

Stroke Signup and view all the answers

What is the unit of measurement for engine displacement in the imperial system?

cubic inches Signup and view all the answers

What is the formula to calculate engine displacement?

Engine displacement = area of a cylinder x stroke x number of cylinders Signup and view all the answers

What is the term used to describe the diameter of a cylinder?

Bore Signup and view all the answers

What is the unit of measurement for compression ratio?

Ratio of volumes Signup and view all the answers

What is the formula to calculate compression ratio?

CR = CV / V Signup and view all the answers

What is the relationship between engine displacement and power output?

Engine displacement is directly proportional to power output Signup and view all the answers

What is the device used to measure engine torque?

Dynamometer Signup and view all the answers

What is the primary reason a diesel engine requires a higher compression ratio than a gasoline engine?

To heat the air in the cylinder to ignite the fuel Signup and view all the answers

What is the unit of measurement for heat value in the metric system?

Kilojoule (kJ) Signup and view all the answers

What is the percentage of heat energy lost to overcome friction in an internal combustion engine?

7% Signup and view all the answers

What is the purpose of a turbocharger or blower in an engine?

To force the intake air into the cylinder under pressure Signup and view all the answers

What is the difference between indicated horsepower and brake horsepower?

Indicated horsepower is the theoretical horsepower, while brake horsepower is the rated horsepower Signup and view all the answers

What is the formula to calculate brake horsepower?

bhp = ihp - fhp Signup and view all the answers

What is the effect of engine speed on volumetric efficiency?

Volumetric efficiency decreases with engine speed Signup and view all the answers

What is the percentage of an engine's theoretical power that is typically lost to overcome internal friction?

64% Signup and view all the answers

What is the definition of one horsepower?

The ability to perform 33 000 lb-ft of work in 1 minute Signup and view all the answers