Engine type meaning

Engine type definition

Over the years of engine development, several types or configurations have been made. All of them relate to the position of the valves and the camshaft (s) that operates them.
air cooled engine -- An engine which is not cooled by antifreeze but by passing air past external fins.
diesel engine -- An engine with high compression that pressurizes the diesel oil fuel and fires the
charge through compression not by a spark plug.
DOHC -- double overhead camshafts
F-head -- Side exhaust valve and overhead intake valve .
flat engine 
four-stroke cycle engine 
hemi or hemi-head -- Engine using hemispherical -shaped (half of a globe or sphere) combustion chambers.
horizontally opposed engine 
hydrocarbon engine 
I-head -- Both valves located directly over the piston . Also called valve-in-head or overhead valve engine.
in-line engine 
internal combustion engine 
L-head -- Both valves on one side of the cylinder 
oversquare engine 
pancake engine 
radial engine 
rotary engine 
slant engine 
SOHC -- Single overhead camshaft.
square engine 
steam engine 
stirling engine 
stratified charge engine 
straight engine 
T-head -- exhaust valve on one side and inlet valve on the other side of the cylinder and found on twin-camshaft engines.
traction engine 
transverse engine 
turbine engine 
two-stroke cycle engine 
undersquare engine 
V-type -- Two sets of cylinders set apart in a V-formation like a V-8 or V-6
valve-in-head engine 
wankel engine 
X-type

Dictionary of Automotive Terms Index

Automotive terms beginning with "E", page 7

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