World class in performance and productivity Cold Milling...
Transcript of World class in performance and productivity Cold Milling...
World class in performance and productivity
Cold Milling Machine W 250 i
High-performance cold milling machine – designed with sheer efficiency in mind
No other milling machine is equal to greater challenges in road construction
Maximize productivity while minimizing operating
costs – this maxim is the key for construction projects
that require large pavement areas to be milled at record
speed. Tremendous engine power makes the W 250 i high-
end cold milling machine from Wirtgen a top performer
which completes even the toughest jobs with maximum
efficiency. But the large milling machine has even more to
offer: the WIDRIVE machine management system, which
greatly improves operator comfort, guarantees low fuel
consumption rates while enabling an environmentally
compatible milling process. It goes without saying that,
owing to its innovative dual-engine concept, the W 250 i
is a role model in economy also during phases in which
performance requirements are low.
2 //3
A machine that lets performance
speak for itself
Tremendous milling performance
State-of-the-art machine management and maximum
drive power.
Dual-engine concept
Milling with one engine at 447 kW / 600 HP / 608 PS or
two engines at 739 kW / 991 HP / 1,005 PS.
Six different milling widths
Milling widths ranging from 2.20 m to 4.40 m.
WIDRIVE
Intelligent machine management system for low
operating costs.
Smart ISC travel drive system
Traction control, power control, precise manoeuvring
in bends.
The W 250 i excels in the quick completion of large-scale milling projects
The large milling machine is removing the pavement at high advance rates
Unlimited milling performance
Unrivalled in the large milling machine class
Each type of pavement removed by the W 250 i is
instantly crushed into small-sized material by the
top-performing machine at tremendous advance rates as
two ultra-strong diesel engines flex their muscles. Milling
extensive areas on motorways or airports is therefore not
a problem at all. The machine’s intelligent WIDRIVE
management system, state-of-the-art dual-engine concept
and choice of different engine or milling drum speeds are
extremely useful features on such high-profile, large-scale
construction projects: they contribute to significantly
reducing the overall operating costs.
4 //5
Its tremendous engine power makes the W 250 i the
ideal candidate for milling pavements at depths of
up to 350 mm or hard concrete pavements at high
advance rates.
Beyond the highly efficient milling of individual layers,
complete road pavements can also be removed in a
single machine pass.
Optimum organization of trucks enables the W 250 i to
remove up to 1,200 tonnes per hour of asphalt – which
is equivalent to the payload of 60 trucks.
The high-performance W 250 i is the ideal choice also
for large-scale projects that need to be completed on
schedule under tremendous deadline pressure.
Advance rate (m/min)
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0 Milling depth in mm0 25 50 75 100 125 150 175 200 225 250 275 300 325 350
Milling performance at 2.2 m milling width
Engine speed = 1,600 min-1
Engine speed = 1,900 min-1
Engine speed = 2,000 min-1
Choice of three different milling drum speeds
A clever feature assists the machine operator in
optimizing diesel fuel consumption, milling per-
formance and thus the overall efficiency of the W 250 i:
adjustment of the milling drum speed from the operator’s
platform. It guarantees optimal milling performance levels
regardless of conditions and across a wide range of ap-
plications. The W 250 i usually runs at the medium milling
drum speed when carrying out standard milling jobs, such
as milling a surface course. High speed is selected for the
large-scale milling of thin pavement layers. Low speed is
the right choice if maximum milling performance levels are
to be achieved at the lowest possible cost: it guarantees
reduced fuel consumption rates and low cutting tool wear.
Optimum milling performance – whatever the job
6 //7
A selector switch in the operator’s platform enables
the engine or milling drum to be set to three different
speed levels.
Low milling drum speed is recommended if high milling
performance levels are required at low milling costs,
for instance, when removing complete pavements at
full depth.
Medium milling drum speed ensures a favourable par-
ticle size of the milled material and should be selected
for surface course milling jobs.
High milling drum speed at high advance rates ensures
an excellent surface texture in fine milling jobs.
More power, less fuel
… to efficiently remove complete road pavements down to a depth of up to 350 mm
Manual adjustment of the mill-ing drum speed – enabling the
machine, when working in ECO mode at low engine speed ...
High-tech – yet easy to operate
Controlling the W 250 i with ease
The innovative operating concept installed in the
W 250 i supports the operator and keeps him up-
to-date on everything he needs to know. The control
panels on the left and right have identical features and are
individually adjustable, thus allowing ease of operation on
both sides of the machine. Together with the LEVEL PRO
control panel, the multifunctional control screen can be
swivelled to both sides to always face the machine opera-
tor. It informs the operator about all important machine and
operation parameters. All controls are located within easy
reach and in the operator’s field of view. They are labelled
in a language-neutral manner and allow easy and intuitive
operation. In the final analysis, the operator is familiar with
the W 250 i very quickly, enabling him to fully focus on the
milling process and deliver top performance.
8 //9
A small number of buttons and switches
… and right ensure ease of operation
Control panels with identical features left …
The W 250 i offers great clarity, a small number of controls and ad-justment to personal preferences
The number of controls has been minimized as the
intelligent WIDRIVE machine control system takes care
of many tasks previously performed by the machine
operator.
The clearly arranged controls are ergonomic in design
and help to prevent fatigue during work.
Ground personnel can use control panels mounted on
the sides of the machine to set or modify important
parameters, such as the milling depth.
Lockable, break-proof covers protect all of the control
panels against vandalism.
Making easy work of any job
The multifunctional control screen provides clear in-
formation on operation parameters and maintenance
details. User-friendly diagnostic tools with clear, unam-
biguous graphic displays enable comprehension of the di-
agnostics procedures after only a short training period. Yet
another feature is the continuous logging of events during
the entire milling process. After keying in the material
density and milling width, the control system automatically
displays information such as the weight and volume of the
material milled, the size of the area milled or the number of
trucks loaded. These job parameters allow the quick and
easy settlement of projects and provide reliable logging of
daily performance.
Multifunctional control screen
Giving operators the full picture – at all times
… and displays operation pa-rameters, job data or diagnostic
details clearly and in colour
The control screen is mounted in the operator’s immediate fi eld of view …
Operation parameters:
Job data:
Diagnostics:
10 //11
WIDRIVE – technology designed with people in mind
WIDRIVE is an intelligent machine management sys-
tem. It automatically manages numerous steps in the
control of the W 250 i which normally need to be performed
by the machine operator. WIDRIVE links various machine
functions, such as diesel engines, travel drive, milling drum
drive and conveyor drive, water spray system, automatic
PTS system as well as LEVEL PRO levelling system, thus
enabling the operator, who is relieved of much of his previ-
ous workload, to fully focus on the quality of his work.
The intelligent linking of these machine functions pays for
the customer in terms of signifi cantly reduced diesel con-
sumption rates, faster processes, reduced water demand,
low engine noise levels and increased daily production
rates.
Engine station Automatic speed adjustment in accord-ance with the milling process to lower diesel fuel consumption
Dual-engine design: the second engine is switched on and off automatically
Height adjustment Four-fold full-fl oating axle
LEVEL PRO levelling system
PTS (Parallel To Surface)
Milling drum assembly Automatic raising of side plates, grada-tion control beam and scraper in transport mode
Travel drive ISC (Intelligent Speed Control) offers optimized machine advance rate, traction control and adjustment of the track speed in bends
Loading of milled material Consistently high belt speed in case of engine lugging
Belt is switched off automatically during reversing and in transport mode
Water system Switches on and off automatically
Water feed adjustment depending on engine load
Perfect visibility and unmatched operator comfort
Perfect working environment ensures maximum effectiveness
The spacious operator’s platform is fully equipped
to enable ergonomic working in line with practi-
cal requirements and over extended periods of time. The
recessed chassis contour – or so-called “wasp waist”
design – of the W 250 i provides the machine operator
with a full view of the front right track unit, milling edge
and edge protection plates. He also has an excellent view,
in both upright and seated position, of the controls and
everything that is happening on the construction site. The
vibration-isolated operator’s platform is accessed conveni-
ently via access ladders fitted on both sides. It is equipped
with individually adjustable comfort seats, a hot-air blower
and a protective canopy that is fully movable to the left or
right side. All of these features make for perfect working
conditions.
The so-called “wasp waist” design enables a free view of the milling cut
Ergonomic working in both upright and seated position
1
6
5
3 4
2
12 //13
The multifunctional control screen can be switched to
camera mode to monitor important work processes.
When using six cameras, an additional camera screen
is installed to allow the simultaneous display of two
different camera views.
Two or six high-resolution colour cameras can be
installed in accordance with customer specifi cations.
Optional installation of an intelligent data converter ena-
bles defi ned machine parameters to be read out from
the machine’s control system as per the standardized
WIFMS norm.
Overview of cameras:
3 Camera at scraper1 Camera at the rear 2 Camera at end of conveyor
5 Camera front, right4 Camera front, centre 6 Camera front, left
LEVEL PRO guarantees high-precision milling results
Geared up for the future with state-of-the-art technology
An accurate levelling system is essential for achiev-
ing a perfect working result. Wirtgen has developed
a specific levelling system for use with cold milling ma-
chines: LEVEL PRO. The overall system comprises various
sensors, a controller unit and a separate control panel.
The graphics-enabled LEVEL PRO screen provides a clear
read out of key parameters. Set and actual values for the
left and right milling depth as well as cross slope parame-
ters are clearly shown on the displays as work progresses.
In addition, the memory feature is very useful to program,
store and invoke set values.
“Rapid slope” – the electronic cross slope sensor for the milling
of predefined cross slopes
Displacement sensors in the hydraulic cylinder accurately
capture the milling depth
14 //15
Two lifting cylinders with integrated displacement sen-
sors capture the milling depth at the edge protection
plates on both sides of the machine.
A great variety of sensors can be integrated into the
automatic levelling system, such as hydraulic milling
depth, cross slope and ultrasonic sensors.
LEVEL PRO can be easily extended, for instance, by
the multiplex system, laser levelling, or 3D levelling
which uses the interface included in the system.
The multiplex system analyses the measuring points
of three sensors on each side of the machine – very
useful to ensure perfectly level surfaces.
Multiplex system: two ultrasonic sensors plus the sensors mounted at the side plates capture the mill-ing depth
Hydraulic milling depth sensors capture the level in
front of the milling drum
● Black = slope sensor● Blue = sensor scanning in front of the drum● Red = permanently installed sensor ■ Yellow = socket for ultrasonic sensor, wire-rope sensor etc.■ Green = socket for LEVEL PRO control panel
Unrivalled power – optimized environmental protection
State-of-the-art engine technology
Two separate ultra-performance diesel engines
enable the W 250 i to mobilize unparalleled milling
performance whenever required. In addition to the innova-
tive dual-engine concept, the large milling machine offers
an exceptionally efficient energy balance while keeping
the strain on the environment low. For the two economical
engines can be operated at three different speed levels to
efficiently respond to the specific job requirements. The
fully electronic WIDRIVE machine management system
enables both engines to always work in the optimal perfor-
mance and torque ranges, at extremely low fuel consump-
tion rates and low operating costs.
16 //17
The W 250 i features state-of-the-art engine technology
for lowest environmental emission levels, complying
with the stringent specifi cations of exhaust emission
standards EC Stage 3b / US Tier 4i.
To ensure effective exhaust gas purifi cation, both
engines of the W 250 i are equipped with a two-way
catalytic converter integrated into the diesel particulate
fi lter.
Combined with an effective sound insulation of the en-
gine compartment, the quiet ECO engines guarantee
low noise emission levels.
The operator is protected from vibrations as both
engines are supported and isolated from vibration by
silent blocks.
P (kW)
[1/min]20001900180017001600150014001300120011001000900 2200
M [Nm]
0500
4000
1500
2000
3000
3500
5000
080
720
160
320
400
560
800
2100
1000
2500
4500
240
480
640
Engine output using two engines
Engine output using one engine
Torque using two engines
Torque using one engine
Engine speed = 1,600 min-1
Engine speed = 1,800 min-1
Engine speed = 2,000 min-1
Combined two-way catalytic converterand diesel particulate fi lter
Special “direct-fl ow” air fi lters
Diesel engines 1 + 2 with cooledexhaust gas recirculation andv ariable turbocharger geometry
1
2
3
Combined two-way catalytic converterand diesel particulate fi lter
Special “direct-fl ow” air fi lters
Diesel engines 1 + 2 with cooledexhaust gas recirculation andv ariable turbocharger geometry
1
2
3
3
21
State-of-the-art dual-engine concept
It takes two to boost economic efficiency
Wirtgen is the first cold milling machine manufacturer
worldwide to offer uncompromising performance
characteristics and maximum efficiency by connecting two
diesel engines by means of a multiple V-belt. Taken togeth-
er, the two engines provide tremendous power, enabling
the W 250 i to achieve unmatched performance levels.
Engine 1 only is in operation in those conditions where the
performance level required to achieve the specified results
is low. This offers significant advantages: deactivating en-
gine 2 results in lower noise levels, lower fuel consumption
and therefore lower exhaust gas emission levels.
18 //19
While engine 1 drives all functional groups, engine 2
is switched on automatically or at the fl ick of a switch
for full milling power.
Engine 2 is switched off automatically in certain situa-
tions, for example, when initiating the transport mode
or when stopping the traction drive for three minutes
or longer.
The operator decides for himself whether to switch off
engine 2 when performing milling operations at partial
load.
Switching on engine 1 only is often suffi cient for milling
off a surface course at a depth of 4 cm.
Tailoring performanceto economical fi t
Engine 2 is switched on or off depending on requirements.
Engine 1 is running in all operating conditions.
Manual selection of engine 2via the ignition switch
Economical drive concept:two combustion engines
Engine 1
Engine 1
Engine 2
PTS – always parallel to the road surface
Finely tuned compensation of surface irregularities
Why does the W 250 i always maintain its stability,
whether during the milling process, when simulta-
neously lowering all four lifting columns, when lowering
the rear track units into the milling cut, when altering the
milling depth, in case of surface irregularities on the left
or right side, or when in transport mode? The solution is
PTS. The intelligent automatic system aligns the machine
parallel to the road pavement: any surface irregularities are
compensated dynamically via the machine’s four hydrauli-
cally inter-connected lifting columns. This feature provides
the W 250 i with a high level of stability in both longitudinal
and transverse direction, relieves the operator from the
need for manual adjustment and improves the overall lev-
elling quality. In short – it makes the milling process much
more efficient.
If one of the crawler tracks hits an obstacle (such as an elevated milling edge) during the milling operation, the other three track units contribute to compensating the level offset, thus enabling the level compensation to occur much more rapidly.
20 //21
Large steering angles of the four track units enable surprisingly small turning radii
Crab steering permits the machine to easily approach the milled cut from the side
ISC – the intelligent travel drive system
Narrow radii, accurate and fast steering
manoeuvres
When a large milling machine is required to be highly
manoeuvrable or make swift headway on difficult
ground, the turn of the W 250 i has come. However, this
is attributable not only to the hydraulic all-track steering
system, freely selectable steering modes, suspension units
with separate hydraulic height adjustment or continuously
adjustable travel speed. Add to this the intelligent ISC
track control system. It includes three basic features: an
electronic traction control system to ensure optimal trac-
tion, automatic speed adjustment of the individual track
units in bends to reduce track pad wear, as well as an
optimized advance rate to ensure maximum milling perfor-
mance at all times.
Hard-wearing HT22 quick-change toolholder system included
Wirtgen has continually developed and improved the
milling process in accordance with strict rules. Our
greatest strengths are extensive manufacturing expertise,
knowledge in the use of high-quality, highly wear-resistant
materials and optimal, application-specific positioning of
the cutting tools on the milling drum. The cutting tools
guarantee optimal milling performance, a highly precise
milling texture and low-vibration operation of the machine.
The broad range of different types of milling drums enables
an equally broad range of applications. In addition, the
wear-resistant HT22 quick-change toolholder system
ensures extended, highly effective milling intervals. All in
all, Wirtgen milling drums contribute to significant time and
cost savings in tough everyday operation on the job site.
On the road of success with mature Wirtgen milling technology
22 //23
The HT22 system is distinctive for its exceptionally
high durability, optimized tool rotation and significantly
extended service intervals.
The milling drum turning device moves the milling
drum into the ideal position in forward or reverse mode
with the diesel engine switched off.
The innovative hydraulic tool extractor can be oper-
ated effortlessly with the diesel engine switched off.
Ejectors made of highly wear-resistant steel can be
turned about 180° and thus be used twice.
Simple replacement of cutting tools
Intelligent tool arrangement in a helical pattern – cutting tools tailored to the specific milling job
Quick replacement of cutting tools, drum turning device, ejectors suitable for multiple use
Wide range of applications with milling widths from 2.20 m to 4.40 m
Cost and quality benefits through XXL-size milling drum units
To fully exploit its tremendous milling potential,
a housing extension enables the W 250 i to be
equipped with milling drums of up to 4.40 m in width.
Milling drum units wider than 2.20 m pay for themselves
quickly through tremendous area performance levels as
they enable wide road pavements to be removed in a
single machine pass. The oversized drum units play their
trump cards in particular on wide urban roads, motorways,
highways and airports. In addition, the milled surfaces
impress with perfect evenness. This results in enormous
saving potentials as a process using greater milling widths
reduces the number of adjacent cuts and of the turning
manoeuvres required while also driving down labour cost.
W 250 i with 3.8-m drum assembly
W 250 i with 2.5-m drum assemblyW 250 i with 2.2-m drum assembly
The following are additionally available:
Drum assembly with a working width of 3.1 m
Drum assembly with a working width of 3.5 m
Drum assembly with a working width of 4.4 m
Six different milling width options on offer:
24 //25
2.2 m drum assembly with FCS Light
Fine milling and micro fi ne milling drums are fi tted with
cutting tools arranged at a much narrower tool spacing
than standard milling drums.
Fine milling and micro fi ne milling drums create fi nely
textured surfaces which are ideally suited as a base for
the application of thin pavement layers.
Fine milling and micro fi ne milling drums enable road
pavements to be roughened and their evenness and
tyre adhesion to be improved.
They additionally enable the cross slope of a road
pavement to be altered or coatings to be removed.
Removing an 11 cm thick surface and binder course of hard asphalt material using the 2.2-m ECO cutter
FCS Light for a multitude of applications at a milling width of 2.2 m
ECO cutterMilling width: 2.2 mMilling depth: 0 – 350 mmTool spacing: 25 mm
Fine milling drumMilling width: 2.2 mMilling depth: 0 – 100 mmTool spacing: 8 mm
Standard milling drumMilling width: 2.2 mMilling depth: 0 – 350 mmTool spacing: 15 mm
Micro-fine milling drumMilling width: 2.2 mMilling depth: 0 – 30 mmTool spacing: 6 x 2 mm
ECO cutterMilling width: 2.2 mMilling depth: 0 – 350 mmTool spacing: 25 mm
Fine milling drumMilling width: 2.2 mMilling depth: 0 – 100 mmTool spacing: 8 mm
Standard milling drumMilling width: 2.2 mMilling depth: 0 – 350 mmTool spacing: 15 mm
Micro-fine milling drumMilling width: 2.2 mMilling depth: 0 – 30 mmTool spacing: 6 x 2 mm
Milling drum unit with many useful features
Milling flush to kerb right down to the full working depth
An intelligently designed milling drum unit is part of
the W 250 i’s equipment package. For full loading of
the milled material, the operator lowers the scraper blade
hydraulically. When raised and locked at the required
height, the scraper blade enables the milled material to be
either partially loaded or remain in the milled cut. In addi-
tion, the scraper blade can be swung wide open for the
replacement of cutting tools. The edge protection plates
left and right are raised via hydraulic cylinders to precisely
mill along road fixtures. Raising the edge protection plates
also prevents them from digging into the ground in un-
paved areas. To prevent collisions during manoeuvring, the
gradation control beam, scraper blade and side plates are
raised when in transport mode. Yet another extra feature:
in emergency mode, all cylinder functions can be operated
even with the engine switched off.
Set the scraper blade to “float-ing” position to allow full loading
of the milled material
… promotes favourable par-ticle sizes and prevents the
formation of large slabs
The hydraulically lifting gra-dation control beam protects
the belt from damage, …
Lock the scraper blade at the required height for partial loading of the milled material
26 //27
Yet another highlight: the edge protection plate on the
right machine side can be raised by 450 mm.
Accurate milling fl ush to kerb is thus also ensured at
great working depths, enabling the edge protection
plate to move over the kerb for the purpose of level
detection.
Two separate water spray bars ensure optimal tool
cooling, with the water pressure being adjusted in
accordance with the machine’s performance and the
amount of water being continuously variable.
This feature extends tool durability and effectively
reduces the generation of dust.
Accurate milling along kerbs is possible on the right side even at maximum milling depth
The left edge protection plate can be raised by 350 mm, the right
one by as much as 450 mm35
0 450
350
350
Dimensions in mm:
Removing huge amounts of milled material
Reliable material loading even under full load
The powerful W 250 i has been designed for maxi-
mum performance and is therefore equipped with
a conveyor system offering exceptionally high conveying
capacities. The swivel-mounted and height-adjustable
discharge conveyor enables tremendous amounts of milled
material to be loaded onto trucks in the most flexible and
cost-effective manner. This is of advantage in particular
when working in narrow bends or crossroad areas and to
ensure that trucks can change “on the fly”. The conveyor
system can be continuously adjusted to different belt
speeds as required by the milling job.
The loading conveyor fills large dump trucks in record time
Wide conveyor slewing angles of 60° to either side ensure smooth material transport
28 //29
The belt speed can also be adjusted manually to
achieve perfect distribution of the milled material on
the truck by setting a variable discharge pattern.
Optimizing the belt speed guarantees minimum wear
of the belts which have rugged cleat profiles.
Wear of the primary conveyor is minimized as the belt
speed is controlled automatically in accordance with
the load.
A stoplight system integrated in the electrically adjust-
able, fold-in exterior mirrors enables visual communi-
cation with the truck driver without needing to revert to
audible signals.
High belt speed
Low belt speed
Continuously adjustable belt speed and discharge range
Useful for night work: the stoplight system gives silent “Stop” and “Go”
instructions to the truck driver
Vacuum cutting system offers a high level of operator comfort
Innovative extraction technology offers a free view of the milling edge
The health and well-being of the operating crew de-
serve particular attention. The W 250 i can therefore
be equipped with the vacuum cutting system to extract
fine material particles: by creating a negative pressure in
the milling drum housing, the mix of air and water vapour
is evacuated and, via a hose system, fed back into the
flow of the milled material transported on the discharge
conveyor. Better air quality and visibility in the working
environment of the machine operator and ground crew
significantly improve operator comfort and boost staff
performance. In addition, reduced soiling of components
such as the engine or air filter results in savings in the
replacement of spare parts or cleaning of the machine.
30 //31
For peace of mind in operation
The hydraulically opening, hinged engine cowling and
wide-opening service panels on either side ensure full
access to all points of maintenance.
All points of maintenance have been grouped together
and are arranged in a clear pattern, offering convenient
access.
The machine’s automatic diagnostic system indepen-
dently monitors valves, sensors and control compo-
nents.
Ample space is available for storing spare cutting
tools, tool kit, machine equipment and high-pressure
cleaner.
Maintenance diagnostics and parameter settings via the on-board control panel
Replacing the air filter is simple and can be performed from the operator’s platform
The engine cowling opens hydraulically at the mere push of a button
Quick maintenance boosts productivity
Successful moves in night operation
Wasting no time during night operations
The W 250 i calls it a day only after it has successfully
completed its daily work – which is not a problem at
all even in darkness. The machine puts up an equally com-
pelling performance during the night and in broad daylight.
The lighting system comprises several spotlights and LED
lights offering flexible adjustment options to fully illuminate
the important work areas. Backlit control panels enable the
machine operator to easily control the W 250 i even during
night operations. Not to forget the smart “Welcome” and
“Go home” lights feature: when walking away from the
W 250 i, it fully illuminates the surroundings of the machine.
Excellent lighting enables night operations to be completed quickly and efficiently
All clear even in darkness – backlit control panels
Heavy-duty transport made easy
32 //33
The folding conveyor design reduces the overall length
of the W 250 i, thus permitting the use of smaller trans-
port vehicles.
The canopy is folded down to transport height hydrau-
lically at the mere push of a button.
Our range of equipment options includes conveyor
support legs for machine transport on a flatbed truck.
Supplementary weights allowing flexible use enable
transport of the W 250 i on vehicles with a low maxi-
mum permissible payload.
Transport – a smooth affair
The control console can be piv-oted down to facilitate transport
The folding conveyor reduces the machine’s transport length
Transport on a flatbed truck with the canopy folded down – tailored to accurate fit!
Keeping a firm eye on environmental standards
Significant reduction of environmental emission levels
The W 250 i large milling machine performs extremely
hard work, yet also successfully meets the chal-
lenge to comply with ever stricter environmental and health
requirements. Users of the W 250 i have a clear ecological
conscience thanks to the intelligent WIDRIVE machine
management system, for WIDRIVE not only significantly
reduces diesel consumption rates but also minimizes
exhaust gas emissions, noise levels and engine vibrations.
The machine’s dual-engine concept is a vital element of
the WIDRIVE system as it offers the unbeatable advantage
of simply shutting down the second engine, when not
needed, for fuel economy. Exhaust and noise emission
levels are reduced at the same time – to keep the environ-
ment intact.
34 //35
The two engines installed in the W 250 i comply with
the strict specifications of exhaust emission standards
EC Stage 3b / US Tier 4i.
The effective VCS extraction system used to evacu-
ate fine material particles reduces dust emission in the
area of the milling drum housing.
Noise emission is reduced by the efficient soundproof-
ing of the engine compartment and anti-vibration
engine support.
Different engine or milling drum speeds, which can be
selected in line with the milling job, ensure exception-
ally low fuel consumption.
Reduced diesel consumption
The W 250i delivers a clean job in terms of efficiency and environmental compatibility
Economical operation, low en-vironmental impact, efficiently performing staff
Wirtgen GmbHReinhard-Wirtgen-Str. 2 · 53578 Windhagen · Germany
Phone: +49 (0) 26 45 / 131-0 · Fax: +49 (0) 26 45 / 131-242Internet: www.wirtgen.com · E-Mail: [email protected]
Illustrations and texts are non-binding and may include customized fittings. Subject to technical changes. Performance data depend on operational conditions. No. 2182650 23-10 EN-04/13 © by Wirtgen GmbH 2013 Printed in Germany