51
october 2014
international
construction
ENGINES
Emissions impact
The turbocharged straight four-cylinderTCD 3.6
L4 covers the range up to 90 kW at Stage IIIB
emissions level and develops maximum torque
of 480 Nm. At Stage IV, it attains maximum
output of 97 kW at maximum torque of
500 Nm, elevating the four-cylinder power pack
to a class that is normally served by engines
of much greater displacement. The engine
is also available without an intercooler at
outputs below 56 kW.
In addition, theTCD3.6permits 100%
power take-off both front and back, and
also features two auxiliary power take-offs
with total torque of up to 310Nm.
The straight four and six-cylinderTCD
4.1 and TCD 6.1 engines are suited to
medium- and heavy-duty application.The
TCD 4.1 covers the range up to 115 kW,
developing a maximum torque of 610 Nm, while
the TCD 6.1 is available at higher outputs up to 180 kW and
maximum torque of 1,000Nm.
TheTCD 7.8 is Deutz’s most powerful mid-class engine with
amaximum output of 250 kW and top torque of 1,400Nm. It
claims to offer -3% to -5% lower fuel consumption compared
with its predecessor.
The six-cylinder TCD 12.0 delivers maximum output of
390 kW and maximum torque of 2,130 Nm, while the eight-
cylinderTCD 16.0 rounds out theDeutz line-upwith 520 kW
and top torque of 2,890Nm.
For EU emission level Stage IV, the 4- to 8-litreTCD 4.1, 6.1
and 7.8 engines come equipped with a DVERT particle filter
and SCR.
Power unit
Also fromGermany, the newHatz 4H50TIC open power unit
(OPU) has been in themarket since January.
The new water-cooled 55 kWHatz 4H50TIC is available as
a ready-to-install OPU. All the parts required for the operation
of the engine are included, such as a radiator and intercooler,
and associated installationhardware.All parts are installed in the
factory during the productionprocess.Thismeans the customer
needs only to connect the tank, pre-filter andpump aswell as air
filter, battery and control box.
According to Hatz, the OPU can be used with a wide range
of applications, including hydraulic lifts, hydraulic power units,
forestrymachinery, drill rigs and stationary applications such as
pumps and generators.
The cooling is adapted to a temperature range of up to 46° C.
Different radiators with other temperature ranges are possible
depending on requirements.
The 4H50TIC as an OPU meets Stage IIIB emissions
regulations in the EUwithout the use of aDPF, althoughHatz
said a detachable DPF could be provided. It can be removed
for cleaning, which Hatz said resulted in lower operating
costs compared to closed particle filter systems. It said manual
cleaning was considerably less expensive than replacing the
complete system.
The engine features two-valve technology in conjunctionwith
a camshaft in block and maintenance-free hydraulic lifters,
creating low internal friction values. In addition, a generously
sized oil pan and filter allow a service interval of 500
hours.Hatz said the engine also set new standards
in its class in terms of power-to-weight ratio and
fuel efficiency.
In July, the 4H50TIC diesel engine, when
equipped with the optional DPF, received
the certificate of conformity with the
Ordinance on Air Pollution Control
(OAPC) of the Federal Office for the
Environment (FOEN) in Switzerland.
By fulfilling the strict OAPC
requirements, it can now be used in
machinery in Switzerland. Since 2009, new
construction machinery in Switzerland with
an output of 18 kW or more has had to keep
to a particle number limit or alternatively be
equippedwith a certified particulate filter system.
While itmet the strict requirements of Stage IIIB
andTier 4 Final without the use of a particle filter,
N
ett Technologies’ newMD 300Diesel OxidationCatalyst (DOC) is designed to oxidize
carbonmonoxide (CO), hydrocarbons (HC) and aldehydes contained in diesel exhaust,
turning them into non-toxic compounds like carbon dioxide (CO2) andwater vapour.
Using corrugated, high temperature-resistant stainless steel metallic foil coatedwith
platinum groupmetal catalysts, theMD 300 is said to be able to reduceCO by up to 90% and
HC by asmuch as 80%. The unit can also convert diesel particulatematter (DPM) and can
reduce particulatematter (PM) by 20%.
MD300DOCs are suitable for use on 4-cycle, constant speed, compression ignition
engines (diesels) rated at 75 kw to 560
kW. Applications include power generation,
gas compression, co-generation, pumping
stations and irrigation equipment.
Nett’sMD300DOCs are available in
either stand-alone or silencer configurations.
Stand-alone designs are universal-fit units for
controlling exhaust emissions only. Silencer
configurations pair theDOC emissions control
unit with silencers. Models are available in
heavy-gaugemild, aluminium and stainless steel
materials.
Catalytic conversion fromNett
The anatomy of DOC aftertreatment
The Stage IV Final turbocharged straight four-cylinder
TCD 3.6 L4 fromDeutz has amaximum output of 97 kW
at maximum torque of 500 Nm.
The Hatz 4H50TIC is described as compact in size and
low inweight. The OPU (Open Power Unit) version is
a ready-to-install engine solution.
