Mack MP7 - Mp7 Engine Design Features; Engine Variants; Engine Components

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DESCRIPTION AND OPERATION
MP7 ENGINE DESIGN
FEATURES
[200 EA]
6
Figure 6 — MP7 Engine — Conventional Chassis —
Right Rear Quarter View
Engine Variants
HORSEPOWER AND CLASS
The MP7 engine is an 11-liter engine available
with six different peak power ratings.
앫 242 kW (325 hp) Econodyne and Maxidyne
앫 257 kW (345 hp) MaxiCruise
앫 265 kW (355 hp) Econodyne
앫 272 kW (365 hp) MaxiCruise and Maxidyne
앫 295 kW (395 hp) MaxiCruise
앫 302 kW (405 hp) Econodyne and Maxidyne
Peak torque ratings fall within the range of
1627 N•m (1200 lb-ft) to 2115 N•m (1560 lb-ft).
Recommended cruising speed for all engines is
1500 rpm where practical. Engine design meets
U.S. and California exhaust emissions regulations
to be imposed beginning with the year 2007.
Engine Components
CYLINDER HEAD
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Figure 7 — Cylinder Head with Valves and Camshaft
Supports
Main features of the cylinder head are:
앫 One-piece cast iron
앫 Integral thermostat housing
앫 Valves angled 12 degrees from normal
(facilitates charge air and exhaust gas flow)
앫 New aid to installation