N67 MNT M28
OVERVIEW
1.12
OCTOBER 2005
NEF engines are the highest expression of design and engi-
neering efficiency that IVECO MOTORS makes available on
the market place. They are highly innovative engines designed
to be able to comply now with the regulations on fumes and
acoustic emissions that will be enforced in the near future.
Designed with innovative techniques and manufactured with
advanced working processes, they are the result of hundreds
of years of design and engineering tradition as well as of an
important international cooperation.
The excellent performance of NEF engines originates from
induction and exhaust ducts of new design where, by impro-
ving the gas exchange phases, the intaken air turbolence is
improved, thus enabling the complete exploitation of the
new injection system capacity.
The new criteria chosen in defining the parameters setting
the combustion conditions, metering and injection, enable
to obtain new balance between high performance and
consumption reduction. NEF engines can be fitted with a
mechanical pump or a total electronic controlled “Common
Rail” fuel supply system.
Every technical solution has been accurately devised so as
to assure qualitative product perfection. The configuration
of the engine itself has been designed in such a way as to
facilitate access to each individual part thus reducing main-
tenance time.
Cylinder head fitted with two valves per cylinder, rear timing
control, new design connecting rods and aluminum-nickel
pistons are components of an engine fitted with 40% less
elements than an engine of equivalent performance.
Moreover, within the cast iron crankcase, coolant circula-
tion grooves, ducts for lubrication loops for the various
machine parts and the seat for push rod bushings have
been grooved in. The backing plate (6) applied to the
lower part makes the crankcase tougher and improves
resistance to stress.
Crankcase
04_011_N
7
8
1
3
6
5
4
2
1. Reconditionable integral cylinder barrels - 2. Water pump seat - 3. Camshaft bushing seat - 4. Oil pump seat - 5.-Main bearings - 6.
Crankcase backing plate - 7. Oil cooler (water/oil) seat - 8. Product model number location.
ENGINE ARCHITECTURE
Figure 5
Summary of Contents for N67 MNT M28
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