Deutz D2011L04 Specifications
| Engine Model: Deutz D2011L04 |
| Engine Type: 4-stroke in-line 4-cylinder oil-cooled diesel |
| Total Displacement: 221 cu.in (3.62 L) |
| Rated Engine Power: 62 Hp (46 kW) at 2600 rpm |
| Fuel System Type: Direct injection |
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The Deutz D2011L04 is a 4-cycle inline
4-cylinder oil-cooled diesel engine from the Deutz 2011 family. This
power unit serves compact construction equipment, agricultural
machinery, and industrial applications, producing an output of 62 hp (46
kW) at 2600 rpm. A defining feature of this engine family is the use of
oil cooling rather than conventional liquid coolant, which eliminates
corrosion and cavitation concerns associated with water jackets.
The combustion system uses direct injection with a pump-pipe-nozzle
configuration, where individual injection pumps serve each cylinder. The
engine incorporates an integrated oil cooling system that simultaneously
lubricates and cools critical components, reducing the number of
external systems required for operation. This design contributes to
extended oil change intervals of up to 1000 hours.
The Deutz D2011L04 is an inline, four-cylinder, four-cycle, oil-cooled
diesel engine. Its architecture uses a vertical inline cylinder
arrangement with direct injection combustion. The engine is naturally
aspirated, drawing air without turbocharging. The combustion process
employs direct injection with individual single-plunger injection pumps
for each cylinder, connected to their respective nozzles via
high-pressure lines in a pump-pipe-nozzle system. The engine uses a
two-valve-per-cylinder overhead valve configuration.
Engine Type: Inline 4-cylinder, 4-cycle, oil-cooled diesel
Family: Deutz 2011
Displacement: 3.62 L (221 cu.in)
Bore x Stroke: 96 mm x 125 mm (3.78 in x 4.92 in)
Compression Ratio: 19.0:1
Rated Power: 46 kW (62 hp) @ 2600 rpm
Maximum Torque: 190 Nm (140 lb-ft) @ 1700 rpm
Aspiration: Naturally aspirated
Combustion Process: Direct injection
Injection System: Pump-pipe-nozzle
Valves per cylinder: 2 (1 intake, 1 exhaust)
Firing Order: 1-3-4-2
Valvetrain: OHV (Overhead Valve)
Low Idle Speed: 900 rpm
High Idle Speed: 2600-2800 rpm depending on application
The cylinder block is a single-piece, inline construction manufactured
from high-grade cast iron. The block incorporates the integrated oil
cooling system, where pressurized oil circulates through channels cast
into the block walls to remove combustion heat. This design uses a high
grey cast iron crankcase for monobloc construction, eliminating the need
for a separate coolant jacket and the associated corrosion and
cavitation risks.
The cylinder bores are induction hardened and finished to accommodate
the piston rings directly. Five main bearings support the crankshaft.
The crankcase breather operates as a closed-circuit system, routing
blow-by gases back into the intake system to reduce emissions. The oil
filter mounting base and oil cooler housing are integrated into the
block casting.
The cylinder head is manufactured from cast iron, matching the block
material for uniform thermal expansion. The valve arrangement consists
of one inlet and one exhaust overhead valve per cylinder, for a total of
eight valves across all four cylinders. Valve actuation occurs via a
camshaft located in the cylinder block, using tappets, pushrods, and
rocker arms. Valve clearance adjustment is performed using setscrews and
locknuts at the rocker arm tips.
The centrally located fuel injector for each cylinder passes through the
cylinder head, directing fuel directly into the combustion chamber
recess in the piston crown. Valve train components are available as
service parts including valve guides, valve seats, valves, springs, and
rocker arms.
The fuel system is a direct injection architecture using individual
single-plunger injection pumps for each cylinder. Each pump is
integrated into the crankcase and driven by the camshaft. The
pump-pipe-nozzle configuration connects each pump to its corresponding
injection nozzle via a high-pressure line. A mechanical governor
controls engine speed by regulating fuel delivery volume from all four
pumps simultaneously.
An optional electronic governor is available for applications requiring
more precise speed control. The fuel lift pump draws fuel from the tank
through a replaceable cartridge-type filter with a water separator.
Injection nozzles are of the multi-hole type, providing optimized fuel
atomization within the combustion chamber. Excess fuel from the
injection pumps and nozzles returns to the tank through a common spill
line.
The lubrication system uses a forced-feed circulation design with an
integrated gear-type oil pump. Engine oil serves dual functions:
lubricating moving components and removing combustion heat from the
cylinder walls and cylinder head. The integrated oil cooling system
routes oil through a plate-type oil cooler before distribution to the
engine. A full-flow spin-on oil filter with paper filtration element
cleans the oil before it enters the main galleries.
Pressurized oil is distributed to the five main bearings, four
connecting rod bearings, camshaft bearings, rocker arm shaft, and the
four individual injection pumps. Piston cooling nozzles direct oil to
the underside of each piston crown. The oil cooling circuit eliminates
the need for a separate liquid coolant system, preventing corrosion and
cavitation damage. A dipstick passes through the cylinder block into the
sump for level checks.
This engine uses an integrated oil cooling system instead of a
conventional liquid coolant circuit. The cooling system is integral to
the lubrication circuit, with engine oil circulating through an oil
cooler and then through passages cast into the cylinder block and
cylinder head. Heat is transferred from the oil to the oil cooler, which
is either air-cooled or liquid-cooled depending on the installation
configuration.
This design provides several advantages: no risk of coolant leakage into
the crankcase, no corrosion or cavitation of cylinder liners, and
reduced maintenance. A thermostatic valve regulates oil flow through the
cooler to maintain optimal operating temperature. The cooling system
capacity is defined by the external oil cooler and plumbing
configuration.
Starting System: A 12-volt electric starting system is standard, with a
starter motor engaging a ring gear on the flywheel. Glow plugs provide
cold starting assistance, preheating the combustion chambers before
cranking.
Intake System: Air enters through a dry-type air cleaner with a
replaceable paper element, then passes through the intake manifold. The
intake manifold distributes air equally to all four cylinders. No
turbocharger or charge air cooler is present on this naturally aspirated
variant.
Exhaust System: The exhaust manifold is a single-piece cast iron
component bolted to the cylinder head. Exhaust gases flow through the
manifold and exhaust pipe to a muffler. The engine meets EPA US T3 and
EU IIIA Tier emissions standards.
Charging System: A 60-amp belt-driven alternator charges the battery and
powers machine electrical loads. The alternator is driven by a poly-V
belt from the crankshaft pulley.
Length: 710 mm (27.95 in)
Width: 465 mm (18.30 in)
Height: 713 mm (28.07 in)
Dry Weight: 303 kg (668 lb)
Oil and Oil Filter Change: Every 500-1000 hours or 12 months.
Valve Clearance Inspection: Every 500 hours.
Fuel Filter Replacement: Every 500 hours.
Air Cleaner Element Inspection: Every 250 hours.
Air Cleaner Element Replacement: When restriction indicator shows
maximum.
Cooling System Service: External oil cooler cleaning as required.
Engine Oil Capacity (with filter): 11.5-12.5 L (12.1-13.2 qt).
Recommended Oil Grade: SAE 15W-40 (API CF or higher).
Oil Change Interval (standard): 500 hours.
Oil Change Interval (with synthetic oil): 1000 hours.
Cylinder Head Bolts (Stage 1): 60 Nm (44 lb-ft)
Cylinder Head Bolts (Stage 2): 120 Nm (89 lb-ft)
Main Bearing Cap Bolts: 100 Nm (74 lb-ft)
Connecting Rod Cap Bolts: 70 Nm (52 lb-ft)
Flywheel Bolts: 80 Nm (59 lb-ft)
Rocker Arm Shaft Support Bolts: 35 Nm (26 lb-ft)
Rocker Arm Adjusting Locknuts: 15 Nm (11 lb-ft)
Injector Clamp Bolts: 25 Nm (18 lb-ft)
Oil Filter (spin-on): 20 Nm (15 lb-ft)
Oil Pan Bolts: 15 Nm (11 lb-ft)
Intake Manifold Nuts: 25 Nm (18 lb-ft)
Exhaust Manifold Nuts: 35 Nm (26 lb-ft)
Starter Motor Mounting Bolts: 40 Nm (30 lb-ft)
Alternator Pivot Bolts: 35 Nm (26 lb-ft)
The Deutz D2011L04 engine serves compact construction, agricultural, and
aerial lift equipment applications requiring 40-65 horsepower.
Articulated Boom Lifts: JLG 600S, JLG 660SJ, and 600 AJ models. These
aerial work platforms use this engine for personnel elevation in
confined areas.
Compact Loaders: Weidemann wheel loaders and compact machines. The
D2011L04W variant is documented in Weidemann equipment spare parts
catalogs.
Agricultural Equipment: Small tractors and agricultural machinery
requiring a 4-cylinder oil-cooled diesel engine.
Industrial Applications: Stationary generator sets, industrial pumps,
and compact construction machinery. The engine is manufactured under
Deutz part number D2011L04i.
Material Handling: Telehandlers and rough-terrain forklifts. A shutoff
device for this engine is available for various construction machinery
applications.
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