LAMINATED--Made up of thin sheets, leaves, or
INTERFERENCE--In radio, any signal received that
plates.
overrides or prevents normal reception of the
desired signal. In mechanical practice, anything
LAMINATED LEAF SPRING--A spring made up
that causes mismating of parts so they cannot be
of leaves of graduated size.
normally assembled.
LANDS--(1) Piston metal between the ring grooves.
INTERNAL GEAR--A gear in which the teeth point
(2) The raised machined surface on a spool valve.
inward rather than outward as with a standard spur
LEAF SPRING--A suspension system component
gear.
made up of one or several layers of flat spring steel.
INTERNAL-COMBUSTION ENGINE--An engine
LEAN MIXTURE--A fuel-air mixture that has a high
in which the fuel is burned inside the engine, as
proportion of air and a low proportion of fuel.
opposed to an external-combustion engine where
the fuel is burned outside the engine, such as a
LEVER--A rigid bar or beam of any shape capable of
steam engine.
turning about one point, called the fulcrum; used
for transmitting or changing force or motion.
INVERSE PROPORTION--The relation that exists
between two quantities when an increase in one of
LEVERAGE--The mechanical advantage obtained
them produces a corresponding decrease in the
by use of lever. Also an arrangement or combina-
other.
tion of levers.
ION--An electrically charged atom produced by an
LINE--A tube, pipe, or hose that is used as a conductor
electrical field.
of fluid.
JET--A metered opening in an air or fuel passage to
LIQUID--A form of matter that has a definite volume
control the flow of fuel or air.
but takes the shape of its container.
JOURNAL--That part of a shaft that rotates in a
LOAD--The power that is being delivered by any
bearing.
power-producing device. The equipment that uses
the power from the power-producing device.
KELVIN SCALE--The temperature scale using
absolute zero as the zero point and divisions that
LPG--Liquefied petroleum gas.
are the same size as centigrade degrees.
LUBRICATION--The process of supplying a coating
KINETIC ENERGY--The energy that a substance
of oil between moving surfaces to prevent actual
has while it is in motion.
contact between them. The oil film permits relative
movement with little frictional resistance.
KINETIC THEORY--A theory of matter that
assumes that the molecules of matter are in con-
LUBRICATOR--A device that adds controlled or
stant motion.
metered amounts of lubricant into a fluid power
system.
KINGPIN INCLINATION--The number of degrees
that the kingpin, which supports the front wheel, is
LUNETTE--An eye that hooks into a pintle assembly
tilted from the vertical.
to tow vehicles.
KINGPIN--The pin by which a stud axle is articulated
MACPHERSON STRUT--A front end suspension
to an axle beam or steering head.
system in which the wheel assembly is attached to a
long telescopic strut.
KNOCK--In an engine, a rapping or hammering noise
resulting from excessively rapid burning or
MAGNETIC CLUTCH--An electric clutch that uses
detonation of the compressed fuel-air mixture.
a magnetic field created by electrical current
flow for engagement. Such clutches are used in
KNUCKLE--A joint or parts carrying a hinge pin that
air-conditioning systems.
permit one part to swing about or move in relation
to another.
MAGNETIC FIELD--The space around a magnet
that the magnetic lines of force permeate.
L-HEAD--A type of engine with valves in the cylinder
block.
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