190201a Flashcards
Engine Fundamentals
Development of the combustion engine started approximately ________ years ago.
200 (about 1794)
An internal combustion engine converts the heat energy of the 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:
Rotational force
What is “engine displacement”?
The swept volume of one cylinder multiplied by the number of cylinders
The compression ratio of a diesel engine would be:
About 2x that of a gasoline engine’s compression ratio (18:1)
An air filter with high restriction would effect the volumetric efficiency of an engine how?
It would decrease the efficiency
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 TDC to BDC
List, in order, the four events that make up ONE cycle of an internal combustion engine.
- ) Intake
- ) Can
- ) Power
- ) Exhaust
A four stroke engine completed all four events in how many crankshaft rotations?
2 full rotations (720°)
“Scavenging” is a term that refers to:
Removing exhaust gasses from a cylinder
What is the term describing the event when both the exhaust and intake valves being open at the same time, in a four stroke engine?
Valve overlap
A two stroke engine has a __________ power stroke than a four stroke engine?
Shorter
