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Deutz BF3M2011 Engine

The Deutz BF3M2011 is a modular, four-stroke, inline three-cylinder diesel engine featuring an integrated turbocharger. Known for its compact footprint and robust power-to-weight ratio, this model utilizes a unique integrated cooling system that minimizes external plumbing and enhances structural reliability. Designed for demanding conditions, it provides high torque at low engine speeds, excellent fuel economy, and lowered acoustic emissions. Its service-friendly layout places all major maintenance points on a single side of the engine, aligning with heavy-duty industrial application standards.

The engine utilizes an overhead valve (OHV) design driven by a single camshaft located within the crankcase via pushrods and rocker arms. It features two valves per cylinder (one intake and one exhaust) for a total of six valves. Valve clearance must be checked and adjusted periodically according to service intervals when the engine is cold. The cylinder dimensions feature a bore diameter of 94 mm and a stroke length of 112 mm. The total displacement measures 2.33 liters.

The fuel injection architecture relies on a mechanical unit pump system (UPS). Each individual cylinder is equipped with its own dedicated injection pump driven directly by the main camshaft. Short high-pressure fuel lines connect each pump to a multi-hole mechanical injection nozzle centered in the combustion chamber. This localized pressure generation ensures precise injection timing and high atomization pressures, promoting complete combustion, reduced exhaust emissions, and optimized fuel consumption.

Engine lubrication is managed by a forced-feed system pressurized by a gear-driven oil pump. The system features an integrated full-flow oil filter cartridge and a high-efficiency oil cooler. In this specific engine family, the lubrication circuit pulls double duty, acting as both the friction reducer and the primary internal thermal regulation medium for high-load components like the pistons and cylinder heads.

The BF3M2011 uses an integrated oil-cooling system rather than a traditional water jacket. The engine oil absorbs combustion heat directly from the cylinder liners and heads. An external engine-driven cooling fan then pushes air across a dedicated, high-capacity oil radiator. This eliminates the risk of cavitation, freezing, and boiling associated with liquid-coolant mixtures, while ensuring rapid warm-up to optimal operating temperatures.

General Technical Data

Engine Specifications

Engine Model ............... Deutz BF3M2011
Engine Type ............... 4-cycle 3-cylinder direct injection oil-cooled turbocharged diesel
Number of Cylinders ............... 3
Cylinder Arrangement ............... In-line vertical
Engine Bore, in (mm) ............... 3.70 (94.0)
Engine Stroke, in (mm) ............... 4.41 (112.0)
Displacement, cu.in (L) ............... 142.2 (2.33)
Rated Engine Power, hp (kW) ............... 65.0 (48.5)
Rated Engine Speed, rpm ............... 2800
Peak Torque, lb-ft (Nm) ............... 140 (190) at 1600 rpm
Minimum Idle Speed, rpm ............... 900
Maximum Idle Speed, rpm ............... 3000
Aspiration Type ............... Turbocharged
Compression Ratio ............... 17.5:1
Firing Order ............... 1-2-3
Cylinder Block Material ............... Cast iron
Cylinder Head Material ............... Cast iron
Combustion System ............... Direct injection with single injection pumps per cylinder
Direction of Rotation ............... Counter-clockwise looking at flywheel side
Number of Valves per Cylinder ............... 2 (1 intake, 1 exhaust)
Exhaust Gas Turbocharger ............... Integrated turbocharger with internal wastegate valve
Lubrication System Type ............... Full-pressure lubrication with integrated oil cooler
Oil Pump Type ............... Gear-driven rotary pump
Oil Filter Type ............... Full-flow spin-on cartridge
Cooling System Type ............... External oil-cooled or integrated oil cooling system
Cooling Fan Drive ............... V-belt driven
Air Cleaner Type ............... Dry type with safety cartridge
Starting System Type ............... Electric starter motor
Electrical System Voltage, V ............... 12 or 24
Alternator Output Capacity, A ............... 60-80

Fuel System

Fuel Injection Pump Type ............... Deutz single injection pumps (PF type unit pumps)
Injection Pump Drive ............... Driven directly by the engine camshaft
Fuel Injector Type ............... Multi-hole nozzle injector assemblies
Fuel Injection Pressure, psi (bar) ............... 3625.9-4351.1 (250.0-300.0)
Peak Injection Pressure, psi (bar) ............... 17404.5 (1200.0)
Fuel Feed Pump Type ............... Mechanical diaphragm or gear type pump plunger
Fuel Feed Pump Pressure, psi (bar) ............... 14.5-29.0 (1.0-2.0)
Fuel Filter Type ............... Spin-on primary cartridge type filter elements
Fuel Injection Timing, deg BTDC ............... 4-8
Governor Type ............... Mechanical centrifugal or optional electronic

Dimensions and Weight

Overall Length, in (mm) ............... 24.1 (610)
Overall Width, in (mm) ............... 19.5 (495)
Overall Height, in (mm) ............... 26.7 (680)
Dry Weight, lbs (kg) ............... 470 (215)
Wet Weight, lbs (kg) ............... 495 (225)

Maintenance Data

Service Information

Compression Pressure Range, psi (bar) ............... 348.0-406.1 (24.0-28.0)
Compression Difference Between Cylinders, psi (bar) ............... 43.5 (3.0)
Oil Pressure at Low Idle Speed, psi (bar) ............... 14.5 (1.0)
Oil Pressure at Rated Speed, psi (bar) ............... 43.5-58.0 (3.0-4.0)
Maximum Oil Temperature in Oil Pan, F (C) ............... 266 (130)
Intake Valve Clearance, in (mm) ............... 0.012-0.016 (0.30-0.40)
Exhaust Valve Clearance, in (mm) ............... 0.020-0.024 (0.50-0.60)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, 15W-40
API Service Classifications ......................... CH-4, CG-4, CI-4
Engine Oil Capacity (Minimum Mark), gal (L) ............... 1.5 (5.5)
Engine Oil Capacity (Maximum Mark), gal (L) ............... 2.2 (8.5)

Service Intervals

Change oil and filter ............... Every 500 hours
Replace fuel filters ............... Every 500 hours
Inspect air filter ............... Every 150 hours
Replace air filter ............... Every 1000 hours
Valve clearance adjustment ............... Every 1000 hours
Fuel system inspection ............... Every 1500 hours
Compression test ............... Every 2000 hours
Drain water separator ............... As required
Belt inspection ............... As required

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ................ 3.7008-3.7016 (94.000-94.020)
Crankshaft Journal Outside Diameter, in (mm) ................ 2.7543-2.7551 (69.960-69.980)
Crank Pin Outside Diameter, in (mm) ................ 2.1638-2.1646 (54.960-54.980)
Crankshaft End Play, in (mm) ................ 0.0039-0.0110 (0.100-0.280)
Intake Valve Stem Outside Diameter, in (mm) ................ 0.3138-0.3142 (7.970-7.980)
Exhaust Valve Stem Outside Diameter, in (mm) ................ 0.3130-0.3134 (7.950-7.960)
Intake Valve Guide Inside Diameter, in (mm) ................ 0.3150-0.3157 (8.000-8.018)
Exhaust Valve Guide Inside Diameter, in (mm) ................ 0.3150-0.3157 (8.000-8.018)
Intake Valve Stem to Guide Clearance, in (mm) ................ 0.0008-0.0019 (0.020-0.048)
Exhaust Valve Stem to Guide Clearance, in (mm) ................ 0.0016-0.0027 (0.040-0.068)
Intake Valve Spring Free Length, in (mm) ................ 1.8898 (48.00)
Exhaust Valve Spring Free Length, in (mm) ................ 1.8898 (48.00)
Intake Cam Height, in (mm) ................ 1.8701-1.8740 (47.50-47.60)
Exhaust Cam Height, in (mm) ................ 1.8701-1.8740 (47.50-47.60)
Piston Pin Outside Diameter, in (mm) ................ 1.1811-1.1813 (30.000-30.005)
Piston Pin to Piston Bore Clearance, in (mm) ................ 0.0002-0.0006 (0.005-0.015)
Top Ring Side Clearance, in (mm) ................ 0.0024-0.0035 (0.060-0.090)
Second Ring Side Clearance, in (mm) ................ 0.0016-0.0028 (0.040-0.070)
Oil Ring Side Clearance, in (mm) ................ 0.0012-0.0024 (0.030-0.060)
Top Ring End Gap, in (mm) ................ 0.0098-0.0157 (0.250-0.400)
Second Ring End Gap, in (mm) ................ 0.0118-0.0197 (0.300-0.500)
Oil Ring End Gap, in (mm) ................ 0.0098-0.0157 (0.250-0.400)

Tightening Torque Specs

Cylinder Head Bolt (Stage 1), lb-ft (Nm) ............... 22.1 (30.0)
Cylinder Head Bolt (Stage 2), lb-ft (Nm) ............... 59.0 (80.0)
Cylinder Head Bolt (Stage 3), lb-ft (Nm) ............... 118.0 (160.0)
Main Bearing Cap Fasteners, lb-ft (Nm) ............... 36.8 (50.0)
Connecting Rod Cap Bolts, lb-ft (Nm) ............... 22.1 (30.0)
Crankshaft Central Pulley Screw, lb-ft (Nm) ............... 29.5 (40.0)
Flywheel Mounting Bolts, lb-ft (Nm) ............... 22.1 (30.0)
Camshaft Timing Belt Gear Screw, lb-ft (Nm) ............... 15.4 (21.0)
Rocker Arm Shaft Lever Block Bolt, lb-ft (Nm) ............... 15.4 (21.0)
Valve Adjusting Screw Locknut Fastener, lb-ft (Nm) ............... 14.7 (20.0)
Fuel Injection Pump Clamping Bracket Bolts, lb-ft (Nm) ............... 22.1 (30.0)
Fuel Injector Hold-Down Clamp Flange Bolt, lb-ft (Nm) ............... 15.4 (21.0)
High Pressure Fuel Line Delivery Union Nuts, lb-ft (Nm) ............... 18.4 (25.0)
Fuel Feed Pump Mounting Flange Nuts, lb-ft (Nm) ............... 15.4 (21.0)
Exhaust Manifold Structural Mounting Nuts, lb-ft (Nm) ............... 18.4 (25.0)
Intake Manifold Air Channel Mounting Screws, lb-ft (Nm) ............... 6.6 (9.0)
Turbocharger Exhaust Inlet Flange Mounting Nuts, lb-ft (Nm) ............... 29.5 (40.0)
Oil Cooler Housing Core Retention Fasteners, lb-ft (Nm) ............... 15.4 (21.0)
Crankcase Timing Belt Cover Housing Bolts, lb-ft (Nm) ............... 15.4 (21.0)
Crankcase Housing Flywheel Side Cover Bolts, lb-ft (Nm) ............... 15.4 (21.0)
Starter Motor Frame Mounting Flange Bolts, lb-ft (Nm) ............... 59.0 (80.0)
Alternator Pivot Adjustment Lock Fastener Bolt, lb-ft (Nm) ............... 22.1 (30.0)
Cooling Fan Hub Drive Pulley Lock Screws, lb-ft (Nm) ............... 18.4 (25.0)
Crankcase Ventilation Pressure Regulator Screw, lb-ft (Nm) ............... 6.6 (9.0)
Camshaft Belt Tensioner Idle Roller Bolt, lb-ft (Nm) ............... 33.1 (45.0)
Thermostat Housing Cover Retaining Screws, lb-ft (Nm) ............... 15.4 (21.0)

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• Deutz Engines Specs
  
• Deutz BF3L2011 Specs
  
• Deutz BF4L2011 Specs
  
• Deutz BF4M2011 Specs
  
• Deutz F3M2011 Specs
  
• Deutz F4M2011 Specs
  

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