Deutz D2011L04W Specifications
| Engine Model: Deutz D2011L04W |
| Engine Type: 4-stroke in-line 4-cylinder water-cooled diesel |
| Total Displacement: 221 cu.in (3.62 L) |
| Rated Engine Power: 67 Hp (50 kW) at 2600 rpm |
| Fuel System Type: Direct injection |
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The Deutz D2011L04W is a 3.6-liter,
four-cylinder, four-stroke water-cooled diesel engine manufactured by
DEUTZ AG, a German engine producer with a history spanning over 150
years. This industrial power unit belongs to the 2011 series and was
engineered for applications including construction equipment,
agricultural machinery, aerial work platforms, and compact loaders.
The engine employs direct injection with a pump-pipe-nozzle fuel system,
a mechanical configuration that prioritizes reliability and
serviceability in demanding environments. The D2011L04W features a cast
iron cylinder block, two valves per cylinder with overhead valve (OHV)
actuation, and a water-cooled cooling system.
The engine’s compact design allows for installation in space-constrained
equipment, with maintenance access consolidated on one side to reduce
service downtime. The engine meets US EPA Tier 4i emission standards for
power ratings below 56 kW. The robust construction enables worldwide
operation even with high sulfur fuel grades, a characteristic valuable
in regions with less refined diesel supplies.
The D2011L04W is a four-stroke, water-cooled diesel engine operating on
the compression-ignition principle. The engine architecture is an inline
four-cylinder configuration with a total displacement of 3.62 L (221
cu.in), derived from a bore of 96 mm (3.78 in) and a stroke of 125 mm
(4.92 in). This undersquare design, with stroke exceeding bore, promotes
torque generation at low engine speeds, a characteristic essential for
industrial and construction applications where sustained pulling power
at reduced engine speeds is required. The compression ratio is set at
19.0:1, a value that ensures reliable cold-start capability and
efficient combustion.
The rated power at the crankshaft is 50 kW (67 hp) at 2,600 rpm. Maximum
torque is 210 Nm (155 lb-ft) achieved at 1,700 rpm, providing strong
low-end pulling power characteristic. The firing order for this inline
four-cylinder engine is 1-3-4-2. The fuel consumption rate is 218 g/kWh
under full load conditions. The idle speed is set at 900 rpm.
The cylinder block is manufactured from cast iron, providing the
rigidity and wear resistance required for sustained industrial diesel
operation. The block is a vertical, inline four-cylinder design with the
cylinders arranged in a single row. The cylinder bores are cast directly
into the block and are finished with a plateau honing process that
optimizes oil retention and piston ring sealing. The crankcase houses a
forged or cast steel crankshaft. The main bearing caps are secured with
bolts torqued to specifications appropriate for the engine’s power
output.
The dry weight of the engine is specified at 270 kg (595 lb) by one
source, while another indicates 200 kg (441 lb). These differences
likely reflect varying levels of accessory fitment. The weight for the
basic engine without generator or flywheel is 207 kg (456 lb). The
physical dimensions are: length 720 mm (28.3 in), width 530 mm (20.9
in), and height 710 mm (28.0 in).
The cylinder head is manufactured from cast iron, matching the cylinder
block material to ensure uniform thermal expansion. The valvetrain is an
overhead valve (OHV) configuration with the camshaft located in the
cylinder block, driven by the front gear train. Each cylinder utilizes
two valves - one intake and one exhaust - for a total of eight valves.
The two-valve-per-cylinder design provides simplicity and reliability
suited to industrial applications. The valves are actuated via pushrods
and rocker arms. Valve clearances require periodic mechanical
adjustment. The cylinder head incorporates the intake manifold mounting
flange, exhaust manifold mounting flange, and the fuel injector ports
positioned for the direct injection combustion system. The cylinder head
gasket is a multi-layer steel (MLS) design.
The D2011L04W is equipped with a direct injection fuel system utilizing
the pump-pipe-nozzle configuration. In this mechanical system,
individual unit pumps generate high pressure, which is transmitted
through high-pressure steel lines to the injection nozzles mounted in
the cylinder head. The system provides precise fuel delivery timing and
quantity control through mechanical governing. The efficient injection
system and optimized combustion ensure optimum engine performance with
low fuel consumption.
The fuel delivery system is fully mechanical, eliminating electronic
components that could fail in harsh environments. The robust design
allows worldwide operation even with high sulfur fuel grades. A fuel
filter assembly provides filtration to protect the injection pump and
injectors from contamination. An electric stop solenoid controls fuel
shutoff.
The lubrication system is a forced-feed circulation design utilizing a
gear-type pump. The oil pump draws lubricant from the sump through a
strainer and delivers it to the main oil gallery. A pressure regulating
valve maintains stable oil pressure within the system. The total oil
capacity, including the filter, is 10.5 L (11.1 US qt).
The engine employs a full-flow spin-on or cartridge-type oil filter. The
engine meets US EPA Tier 4i emission standards for power ratings below
56 kW. The engine requires diesel engine oil meeting appropriate API
specifications, with SAE 15W-40 recommended for most operating
conditions. The oil change interval is specified at 500 operating hours
under normal conditions. All maintenance parts are accessible from one
side of the engine, reducing service downtime.
The D2011L04W utilizes a water-cooled system as standard equipment, with
an air-cooled or optionally integrated cooling system also available.
The water-cooled configuration employs a centrifugal water pump to
circulate coolant through the cylinder block and cylinder head. The
system maintains engine operating temperature within a range suitable
for continuous industrial operation.
The coolant circuit includes a thermostatic bypass that facilitates
rapid warm-up. The radiator configuration varies by equipment
application. A charge air cooler (intercooler) is optionally available
for water-cooled configurations. The recommended coolant mixture is a
50/50 glycol-water blend with appropriate corrosion inhibitors for cast
iron engines. The engine is also available with oil-cooled
configuration, providing flexibility for different installation
requirements.
| Intake and Exhaust Systems |
Air Intake: The D2011L04W is equipped with inline turbocharging in its
standard configuration. The turbocharger increases air density entering
the cylinders, improving combustion efficiency and power output. The
intake system includes a heavy-duty paper element air cleaner. The
engine is available with either oil-cooled or water-cooled systems,
including integrated cooling system options.
Exhaust System: The exhaust system incorporates a cast iron exhaust
manifold with provisions for turbocharger mounting in turbocharged
configurations. The engine in its naturally aspirated configuration
(D2011L04 without the W designation for different cooling arrangements)
provides lower power output. The turbocharged version offers increased
power density.
The electrical system is 12V, with an appropriately rated starter motor
and alternator. The alternator and wiring harness are supplied
separately from the basic engine when ordered as a replacement part.
Engine Management: The D2011L04W utilizes mechanical engine controls
with a mechanical governor regulating fuel delivery. All parts requiring
maintenance are positioned on one side of the engine, allowing easy
access and reducing running costs.
Cold Start Capability: The engine features best cold starting properties
even under extreme conditions, a characteristic engineered into the 2011
series for reliable operation in varied climates.
The physical dimensions of the D2011L04W are compact for its
displacement class: length 720 mm (28.3 in), width 530 mm (20.9 in), and
height 710 mm (28.0 in). The dry weight varies according to the source
and configuration: 270 kg (595 lb) for one configuration, 200 kg (441
lb) for another, and 207 kg (456 lb) for the basic engine without
generator or flywheel. The compact engine design and an optional PTO
drive reduce installation costs and increase the number of applications.
The service life of the D2011L04W under proper operating conditions is
engineered to exceed 10,000 operating hours in industrial applications
before major overhaul. Oil change intervals are recommended at 500
operating hours for normal service conditions. The oil capacity is 10.5
L (11.1 US qt) including the filter. The engine requires diesel engine
oil meeting appropriate API specifications, with SAE 15W-40 recommended
for most operating conditions.
Valve clearance inspection and adjustment is mandated every 1,000
operating hours. Replacement of the fuel filter is required every 500
operating hours. The air cleaner element requires replacement based on
operating environment dust loading, with inspection at 250-hour
intervals. The coolant must be replaced every 2 years or 4,000 operating
hours, using a 50/50 glycol-water mixture with appropriate corrosion
inhibitors.
The accessory drive belt requires inspection at each service interval,
with replacement when cracking or wear is evident. Long oil change
intervals and easy changing of engine fluids reduce running costs and
increase machinery availability.
Critical fasteners on the D2011L04W require precise torque application
per Deutz service specifications. The cylinder head bolts follow a
multi-stage angular torque procedure. The connecting rod bolts are
tightened to 50 Nm (37 lb-ft) plus 90-degree angle. The main bearing cap
bolts are torqued to 100 Nm (74 lb-ft) plus 90-degree angle. The
flywheel-to-crankshaft bolts receive a torque of 120 Nm (89 lb-ft) plus
90-degree angle.
The rocker arm shaft pedestal bolts are torqued to 25 Nm (18 lb-ft). The
injection pump mounting bolts are torqued to 25 Nm (18 lb-ft). The
injector hold-down bolts are torqued to 30 Nm (22 lb-ft). The intake and
exhaust manifold bolts are torqued to 35 Nm (26 lb-ft). These values
assume the use of high-strength, lubricated threads as per factory
specifications. The engine workshop service manual provides detailed
torque values for all engine components and should be consulted for
exact specifications.
The D2011L04W is utilized across a wide range of industrial and
commercial applications. In the construction equipment sector, the
engine powers JLG 600S aerial work platforms, where it produces 36.5 kW
(49 hp) at 2,600 rpm. The engine also powers HAMM 3205P vibratory
rollers, delivering 48 kW (64 hp) at 2,500 rpm. In the material handling
sector, the engine is used in Kramer 850 wheel loaders from model year
2008 onward.
In the compact equipment sector, the engine is suitable for excavators,
generators, and water pumps. The engine in its naturally aspirated
configuration (without W designation) powers a range of Deutz equipment
series. The D2011L04W remains a supported engine through Deutz’s global
service network, with genuine parts availability for maintenance and
repair. The engine meets EU II emission standards and US EPA Tier 4i for
power ratings below 56 kW.
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