Engine Fundamentals Flashcards
Development of the internal combustion engine started approximately _________ years ago.
200yrs
An internal combustion engine converts the heat energy of the fuel into:
usable mechanical energy and wasted heat
The term compression ignition refers to:
The method of igniting fuel in a diesel engine.
The term torque could be referred to as:
rotational force
Which of the following describes the term engine displacement?
Swept volume of one cylinder X number of cylinders
The compression ratio of a diesel engine would be:
About two times a gasolines engines compression ratio.
An air filter with high restriction would ________ the volumetric efficiency of the engine.
decrease
Horsepower is a measurement of:
The rate of doing work.
An internal combustion engine dissipates approximately 60% of the heat developed by combustion through:
B. The cooling and exhaust systems.
The term stroke refers to:
The distance the piston moves from TDC to BDC.
List, in sequence, the four events that make up one cycle of an internal combustion engine.
Intake.
Compression.
Power.
Exhaust.
A four stroke cycle engine completes all four events in _______ of crankshaft rotation.
720 Degress
Scavenging is a term that refers to:
Removing exhaust gases from a cylinder.
In a four stroke cycle engine, ________ is the number of crankshaft degrees that the exhaust and intake valves are open.
valve overlap
A two stroke cycle engine has a ______ power stroke than a four stroke cycle engine.
shorter
The camshaft of a four stroke cycle engine rotates at _________ crankshaft speed.
one half
On the compression stroke, a gasoline engine compresses:
an air/fuel mixture
The rpm and power output of a diesel engine are controlled by regulating:
Fuel quantity
Engines may be classified by:
Cycle and cooling type.
Number and arrangement of cylinders.
Operational speed and type of fuel used.
A turbocharger is a device used to:
Increase volumetric efficiency.
Using the formula, Area=Bore^2 x 0.7854, calculate engine displacement for the following:
6 cylinder engine, 140mm bore, 152mm stroke
6 cylinder engine, 5.5inch bore, 6.0 inch stroke
6 cylinder engine, 130mm bore, 160mm stroke
20 cylinder engine, 9.0625 inch bore, 10 inch stroke
14.04L Displacement
855.30 in^3 Displacement
12.74L Displacement
12,900.81 in^3 Displacement
