01
Plenty of power...
and more in reserve
More usable power
All of the engines have significantly
more power at 2,000 rpm than at
2,200 rpm (rated engine speed).
This ‘power bulge’ gives incredible
lugging ability to pull through
difficult conditions or to help
haul fully laden trailers on long,
steep gradients.
Also, with an increased
constant power range of at
least 500 rpm, you can maintain
work rate at lower engine
speed, giving reduced noise
and fuel consumption.
Advanced Electronic
Engine Management
The Electronic Engine Management
system (EEM) controls not only
the very precise common rail
fuel injection, but also enables a
range of advanced engine control
functions, including Power Boost
and Engine Speed Control*.
Power boost
Due to sophisticated interaction
between the engine and
transmission management
systems, on MF 6400 models
when 3rd or 4th gear is selected
or when the PTO is engaged, EEM
automatically gives a significant
power and torque ‘boost’.
All models featured in this brochure are powered by AGCO SISU
POWER, Tier lll emissions compliant engines, featuring common
rail fuel injection and 4-valve cylinder head design. They deliver
high power and torque and work in perfect harmony with the highly
efficient Dyna-6 and Dyna-VT transmissions to give superb field
and transport capabilities, with excellent fuel economy.
Engine speed control
Switches mounted conveniently
on the right-hand console enable
two engine speeds to be pre-set
and memorised.
This enables one engine speed to
be set for work and the other for
use when turning at the headland.
The ability to return quickly and
easily to precise engine speeds will
boost productivity, improve work
quality and simplify operation in
almost all of your daily tasks.
Improved fuel economy
Electronic engine management
constantly monitors a wide range
of parameters and makes continual
and incredibly fine adjustments to
fuel injection. Combined with four-
valve cylinder head design and
Common Rail fuel injection, this has
given significant improvements in
both emissions and fuel economy.
Whilst lowering the absolute
Specific Fuel Consumption (SFC)
figure is important, the graph (right)
shows how the latest engines
achieve lower fuel consumption
over a much wider range of
operating conditions.
Common rail fuel injection
The common rail fuel injection
system uses precise electronic
control to continuously monitor
operating conditions and engine
load, and to regulate accordingly
the high-pressure fuel injection.
The result is faster response to
changes in field conditions and
engine load, more power and
torque over a wider engine speed
range, excellent fuel economy and
lower noise and emissions.
Four valves per cylinder
The cylinder head design features
two inlet valves and two exhaust
valves per cylinder enabling
the fuel injectors to be centrally
positioned in the cylinder head.
This design improves fuel/air
mixture and gas flow, giving
optimum fuel combustion and
reducing emissions and fuel
consumption, whilst also improving
engine reliability by reducing upper
cylinder temperature. The more
efficient combustion also improves
torque characteristics throughout
the whole working range.
* Standard specifications vary by model
and market
08
01
Common rail fuel injection: Mor
e
power
. Mor
e tor
que. Better fuel economy
.
‘A/B’ memorise the engine speed,
‘+/-’ adjust the memorised speeds (A/B)
09
Compared to previous
generation engines,
MF’s electronic
engine management
system broadens the
operating range within
which the tractor is
operating at optimum
fuel efficiency.
Specific Fuel Consumption
190
200
210
220
230
Optimum fuel
economy
Speci
fi
c fuel consumption
Engine rev/min
B
A
Power incr
ease
B
A
Power (PS)
Power: MF 6485 - MF 6499
High power, with power
increase as engine
speed falls between
2200 and 2000 rpm.
A:
Normal power curve.
B:
Power Boost, available
when PTO is engaged
or 3rd or 4th gear
are selected.
Torque reserve
B
A
Torque reserve
B
A
The torque curve
shows how ‘pulling
power’ is maintained
as engine speed falls
and how it increases
with boost.
A:
Normal torque curve.
B:
Extra torque, available
when PTO is engaged
or 3rd or 4th gear are
selected.
To
rque (Nm)
Torque: MF 6485 - MF 6499
