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DEUTZ - 912 air cooled diesel engines

These are the characteristics:

  • Air-cooled 3-, 4-, 5-, 6-cylinder naturally aspirated in-line-engines.
  • Direct injection.
  • Advanced injection and combustion system.
  • PTOs via gear, V-belt and crankshaft.
  • Extremely compact design.
  • High torque at low speeds.
  • Modular system with single cylinder arrangement and high degree of parts commonality.
  • Customized component system with many different peripheral parts.
  • Cold-starting ability even under extreme climatic conditions.
    DEUTZ air-cooled diesel engine

    Dimensions

    engine dimensions
    EngineABCDEF
    F3L912 mm589679796329268108
    F4L912 mm71967979632926888
    F5L912 mm86667983332930588
    F6L912 mm99667980632927888

    Engine description


    Cooling system: Air-cooled with integrated axial-flow blower
    Crankcase: Grey cast iron
    Cylinder head: Aluminum single cylinder heads
    Valve arrangement/timing: Overhead valves in the cylinder head, one inlet and one exhaust valve per cylinder, actuated from gear-driven camshaft via tappets, push-rods and rocker arms
    Piston: Three-ring piston: two compression rings and one oil scraper ring
    Piston cooling: Oil spray via nozzle
    Crankshaft: Nodular cast iron with integrated counterweights
    Connecting rod: Drop-forged steel rod, diagonally split
    Main and big end bearings: Ready-to-install bi-metal plain bearings
    Camshaft: Steel, seated in bi-metal bearing on the blower side
    Lubrication system: Forced-feed circulation lubrication with rotary pump which feeds lubricating systems
    Engine oil cooler: Integrated aluminum cooler
    Oil cooler thermostat: Oil cooler flow thermostatically controlled on engines with heating system
    Lube oil filter: Paper-type micro-filter as replaceable-cartridge full flow filter
    Injection pump/governor: In-line injection pump with mechanical centrifugal governor
    Injection nozzle: Five-hole-nozzle
    Fuel filter: Replaceable cartridge
    Starter motor: 12V; 2,7 kW (Standard)
    Alternator: Three-phase alternator, 14 V; 55A (Standard)
    Options: Intake manifold connections, exhaust manifold connections, compressors, hydraulic pumps, engine mounts rigid and flexible, oil pans casted in self supporting design (3-, 4- and 6-cylinder engines), SAE 1/2/3/4 flywheel housings, three-phase alternators 12 and 24 Volt, integrated hydraulic oil cooler, cooling fans controlled by exhaust thermostat

    DEUTZ air-cooled diesel engine

    Technical data

    Engine typeF3L912F4L912F5L912F6L912
    Number of cylinders3456
    Bore/stroke mm100/120100/120100/120100/120
    Displacement l2.8273.7704.7125.660
    Compression ratio19191919
    Max. rated speed rpm2500250025002500
    mean piston speed m/s10101010
    Power to ISO 3046 kW38516570
    at speed rpm2350235023002300
    mean effective pressure bar6.846.907.206.45
    Max. torque Nm176238307364
    at speed rpm1450145014501450
    Minimum idle speed rpm650650650650
    Specific fuel consumption g/kWh221220223222
    Weight to DIN 70020, part 7A kg285320405440


    Related links: DEUTZ licensed engines


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    Rafal Swiecki, geological engineer email contact

    This document is in the public domain.

    March, 2011