Engine fundamentals 201a Flashcards
Development of the internal combustion engine started approximately _________ years ago
200
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 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 engine’s CR
An filter with high restriction (dirty) 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 TDC to BDC
List in sequence the 4 events that make up one cycle of an internal combustion engine ?
Intake/compression/power/exhaust
A 4 stroke cycle engine completes all 4 events in _____ of crankshaft rotation ?
720degrees
Scavenging is a term that refers to ?
Removing exhaust gases from a cylinder
In a 4 stroke cycle engine __________ is the number of crankshaft degrees that the intake and exhaust valves are both open
Valve overlap
A 2 stroke cycle engine has a ____ power stroke than a 4 stroke cycle engine
Shorter
