FUEL FILTERA device located in the fuel system
that removes dirt and other contaminates from the
fuel passing through.
FUEL GAUGEThe gauge that indicates to the
operator the height of the fuel level in the tank.
FUEL INJECTIONA fuel delivery system that
sprays fuel either directly into the cylinders or into
the intake manifold just ahead of the cylinders.
FUEL INJECTION TUBINGThe tube connecting
the injection pump to the nozzle holder assembly.
FUEL INJECTORA device in a diesel engine fuel
system for injecting fuel into the cylinder.
FUEL LINEThe pipe or tube through which fuel
travels from the tank to other components within
the fuel system.
FUEL PUMPThe electrical or mechanical device in
the fuel system which forces fuel from the fuel tank
to the carburetor or fuel injection system.
FUEL PUMPHOUSINGThe main casing into or to
which are assembled all the components of the
injection pump, and may accommodate the
camshaft in the case of camshaft pumps; or the
camshaft or driveshaft in the case of distributor type
FUEL TANKThe metal tank that serves as a storage
place for fuel.
FULL-FLOATING PISTONA piston pin free to
turn in the piston boss of the connecting rod eye.
FULL THROTTLEWide-open throttle position
with accelerator pressed all the way down to the
GASOLINEA liquid blend of hydrocarbons,
obtained from crude oil; used as the fuel in most
GASOLINE ENGINEAn engine having its piston
driven by the explosions of a mixture of air and
gasoline vapor ignited by an electric spark
GASTIGHT Constructed or arranged so that gas will
not enter or escape an enclosed space under
GEAR TRAINA drive mechanism consisting of a
group of gear that mesh together to operate an
engine and its accessories.
GLOW PLUGA small electric heater installed in the
precombustion chamber of diesel engine to preheat
the chamber for easier starting in cold weather.
GOVERNORA device that controls, or governs,
another device, usually on the basis of speed or
HEAT-CONTROL VALVEIn the engine, a
thermostatically operated valve in the exhaust
manifold; diverts heat to the intake manifold to
warm it before the engine reaches normal operating
HONEA tool/process for enlarging cylinders or
cylinder lines to precise tolerances; also used for
HORSEPOWERA measure of a definite amount of
power; 550 foot-pound per second.
governor having a hydraulic servo-booster to
increase output force.
HYDRAULIC HEAD ASSEMBLYThe assembly
containing the pumping, metering, and distributing
elements (and may include the delivery valve) for
HYDRAULIC VALVE TAPPETA valve tappet
that, by means of hydraulic pressure, maintains zero
valve clearance so that valve noise is reduced.
HYDROCARBON (HC)A compound containing
only carbon and hydrogen atoms, usually derived
from fossil fuels such as petroleum, natural gas, and
coal; an agent in the formation of photochemical
smog. Gasoline is a blend of liquid hydrocarbons
refined from crude oil.
HYDROGEN (H)A colorless, odorless, highly
flammable gas whose combustion produces water;
the simplest and lightest element.
HYDROMETERA device to determine the specific
gravity (roughly the heaviness) of a liquid. This
determination indicates the freezing point of the
coolant in the cooling system.
I-HEADA type of engine with the valves located in
the cylinder head.
INDICATED HORSEPOWERA measurement of
engine power based on power actually developed in
the engine cylinders.