Chapter 1 Flashcards
Development of the internal combustion engine started approximately _________ years ago.
200
An internal combustion engine coverts the heat energy of fuel into:
Useable mechanical energy and wasted heat.
The term compression ignition refers to:
The method of igniting fuel in a diesel engine.
The term torque could best be described as a:
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 gasoline engines compression ratio
An air filter with high restriction would _____ the volumetric efficiency of an 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:
the cooling and exhaust systems.
The term stroke refers to:
the distance the piston moves from BDC to TDC.
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 Degrees
Scavenging is a term that refers to:
Removing exhaust gases from the cylinder.
In a four stroke cycle engine, _______ is the number of crankshaft degrees that the intake and exhaust valves are both 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, 5.5 inch bore, 6 inch stroke.
6 cylinder engine, 130mm bore, 160mm stroke.
20 cylinder engine, 9.0625 inch bore, 10 inch stroke.
14.04L displacement
855.3in^3 displacement
12.74L displacement
12,900.81 in^3 displacement
