Glossary 171
Electronic Unit Injector (EUI)
Controlled electronically by the EECU, there is one electronic unit injector for each
cylinder of an engine. A unit injector incorporates the pump, the injector nozzle
and two solenoids in a single body. Actuated by the camshaft via rocker arms with
roller followers, electronic unit injectors offer precise fuel metering using a process
called "rate shaping."
Engine Electronic Control Unit (EECU)
A microprocessor-based controller usually mounted on the engine block. On the
engine, a cooling plate mounts on the surface of the module. A tube on the plate
conducts fuel drawn from the tank on its way to the pump before being pressurized.
The fuel acts as the coolant. The EECU controls fuel timing and delivery, exhaust gas
recirculation, fan operation, engine protection functions and engine brake operation.
Exhaust Aftertreatment System (EATS)
Equipment installed to remove the maximum amount of noxious emissions from
the exhaust gases after they leave the combustion chamber before they reach the
atmosphere. This includes exhaust gas recirculation (EGR), the variable geometry
turbocharger (VGT), the discharge recirculation valve (DRV), the aftertreatment fuel
injector (AFI) and the diesel particulate filter (DPF).
Exhaust Gas Recirculation (EGR)
A system whereby a pre-determined amount of exhaust gas is returned to the
combustion chambers. Adding a small percentage of exhaust gas to the fuel/air
mixture lowers the combustion temperature reducing the formation of nitrogen oxides
(NOx).
Hydrocarbons (HC)
Chemical compounds composed only of carbon and hydrogen. Gasoline, diesel fuel
and motor oil are all examples of a very large group of hydrocarbons. The largest
source of hydrocarbons is petroleum.
Idler Gear
A gear running between a driving and a driven gear to make the driven gear rotate in
the same direction as the driving gear.
Summary of Contents for EPA2007 D13F
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Page 35: ...SPECIFICATIONS 29 Bearing Cap Camshaft Rocker Arm Shaft T2022796 ...
Page 101: ...ENGINE COMPONENT AND LOCATION 95 Fuel System W2033327 ...
Page 134: ...128 ENGINE COMPONENT AND LOCATION Rear Engine Components W2032470 ...
Page 136: ...130 ENGINE COMPONENT AND LOCATION Oil Pan and Stiffing Frame W2032451 ...
Page 138: ...132 ENGINE COMPONENT AND LOCATION Lower Engine Components W2032471 ...
Page 140: ...134 ENGINE COMPONENT AND LOCATION Replacement Kits Engine Replacement Kits W2032452 ...