Perkins 2506 Operation And Maintenance Manual page 19

SEBU8313-02
Illustration 15
Typical example
Right side view
(8) Exhaust manifold
(9) Turbocharger
Engine Description
Table 1
2506 Engine Specifications
Cylinders and Arrangement
Bore
Stroke
Displacement
Firing Order
Rotation (flywheel end)
(10) Temperature regulator housing
(11) Water pump
i02581540
In-line six cylinder
137.2 mm (5.4 inch)
171.5 mm (6.8 inch)
15.2 L (928 in 3 )
1-5-3-6-2-4
Counterclockwise
(12) Oil cooler
(13) Oil filter
The electronic engines that are covered by this
manual have the following characteristics: direct fuel
injection, electronic unit injection that is mechanically
actuated, turbocharged and air-to-air aftercooled
(ATAAC).
The electronic engine control system provides the
following functions: electronic governing, automatic
air to fuel ratio control, injection timing control and
system diagnostics.
An electronic governor controls the output of the unit
injectors in order to maintain the engine rpm that is
desired.
Very high injection pressures are produced by
electronically controlled, mechanically actuated unit
injectors. The injectors combine the pumping and the
electronic fuel metering (duration and timing) during
injection. The unit injectors accurately control smoke
limiting, white smoke, and engine acceleration rates.
Product Information Section
Engine Description
g01289038
19