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260 kW, 1600 Nm, D457.951, On Highway EURO 4, Bus , Stadtbus
Date: 21.12.
The technical data indicated here apply to the structure of engine according to the basis engine type (at ambient conditions +25°C /1013 mbar). Deviations by variants/options in the scope of supply are possible. Technical data indicated as "xxx" are not contained in the basis scope of supply and not relevant for the engine model. Technical data indicated as "---" are contained in the basis scope of supply but not yet documented ("in work"). Subject to change
Engine Description
Model In-line Diesel engine with electronic engine management Turbocharging System Turbocharging with charge air cooling (air/air) Turbocharger 1 - TC, with fixed geometry
Exhaust Gas Aftertreatment SCR system, exhaust muffler with catalyst, AdBlue injection withsupplying and metering unit
Combustion Process Four stroke Diesel direct injection
Injection System High-pressure fuel-injection system with centrally positionedinjection nozzles
Injection Pump Single injection pumps, integrated in crankcase Cooling System Coolant recirculation cooling Fan xxx Crankcase Grey cast iron, noise-optimized Cylinder Wet type cylinder liners Cylinder Head Single cylinder heads, grey cast iron Valves 2 inlet valves and 2 exhaust valves per cylinder Charge Air Housing / Charge Air Manifold Noise-optimized, acoustically decoupled Crankshaft Forged, with counterweights Connecting Rod Forged Piston Aluminium piston with steel ring carrier and oil cooling Oil Cooler Integrated in crankcase Gear Drive Located at fleywheel end Belt Drive System V-ribbed single belt with automatic belt tensioner Oil- / Fuel Filter Hanging positon at engine front
Engine Representation (Drawing) --- Engine Illustration (Drawing) 000 05 401
General Data
Engine Code OM 457 LA.IV/ No. of Cylinders 6 Displacement liter 11, Bore mm 128 Stroke mm 155 Compression 18, Direction of Rotation (View From Flywheel) Counterclockwise direction Firing Order 1 - 5 - 3 - 6 - 2 - 4 Coldstart Coldstart Limit at Battery Capacity of 75% °C - Starting Speed at -20°C, min rpm 100 Engine Compartment Temperature Engine Compartment, max. Permissible °C 100 Generator, max. Permissible °C 80 Noise Emission Sound Power Level at Rated Power dB(A) --- Sound Power and Third Octave Band (Drawing) --- Moment of Inertia of the Rotating Mass Flywheel kgm² 1, Engine (with Flywheel) kgm² 2, Bending Moment at Rear Edge of Flywheel Housing (stat.), max. Nm 2000
260 kW, 1600 Nm, D457.951, On Highway EURO 4, Bus , Stadtbus
Date: 21.12.
The technical data indicated here apply to the structure of engine according to the basis engine type (at ambient conditions +25°C /1013 mbar). Deviations by variants/options in the scope of supply are possible. Technical data indicated as "xxx" are not contained in the basis scope of supply and not relevant for the engine model. Technical data indicated as "---" are contained in the basis scope of supply but not yet documented ("in work"). Subject to change
Power, Torque
Rated Power kW 260 at Engine Speed rpm 2000 Torque, max. Nm 1600 from Engine Speed rpm 1100 Power, Torque Overview Single Curve 100 04 555 Mean Effective Pressure at Maximum Torque bar 16, at Rated Power bar 13, Engine Speed Low Idle Speed, Standard rpm 560 Low Idle Speed, min. rpm 510 Maximum no Load Speed, max. rpm 2360 Lowest Speed for Continuous Operating rpm 1000 Operation Altitude w/o Power Reduction, max m.a.sea l. 2000 Power Reduction at Higher Altitudes Overview (Drawing) 100 70 010
Dimension, Weight
Dimension Length mm 1316 Width mm 746 Height mm 1019 Weight Dry kg 1045 Wet kg 1065 P/W Ratio kg/kW Dry kg/kW 4, Wet kg/kW 4, Location of Center of Gravity (Drawing) --- Main Moments of Inertia (Drawing) ---
Coolant System
Cooling Water Circuit (Drawing) --- Heat Rejection, at Rated Power kW 116 Coolant Pump Delivery at Rated Speed Engine l/s 7, Transmission Ratio 0, Pump Characteristic (Drawing) 300 10 200 Thermostat Begin of Opening °C 83 Fully Open at °C 95 Temperature Difference between Engine Inlet and Outlet, max. °C 8 Coolant Temperature, max. °C 100 Pressure Protection of Cooling System min. bar 1, Coolant Volume in the Engine liter 15
260 kW, 1600 Nm, D457.951, On Highway EURO 4, Bus , Stadtbus
Date: 21.12.
The technical data indicated here apply to the structure of engine according to the basis engine type (at ambient conditions +25°C /1013 mbar). Deviations by variants/options in the scope of supply are possible. Technical data indicated as "xxx" are not contained in the basis scope of supply and not relevant for the engine model. Technical data indicated as "---" are contained in the basis scope of supply but not yet documented ("in work"). Subject to change
At Rated Power m³/min 24, max. m³/min 24, Intake Air Volume (Drawing) 650 00 716 Combustion Intake Vacuum (stat.), at Rated Power Air Cleaner, at New Condition mbar 25 Air Cleaner, Service Point, max. mbar 55 Permissible Air Temperature, max. At Engine Inlet °C 55 Rise between Ambiente and Engine Inlet °C 8
Exhaust System
Exhaust Gas Mass, at Rated Power g/s 460 Exhaust Gas Volume, at Rated Power m³/min 44 Exhaust Gas Temperature at Rated Power °C 380 max. °C 580 Exhaust Back Pressure (stat.), at Rated Power mbar 165 Exhaust Silencer Volume, +/-40% dm³ Volume dm³ 149 AdBlue Consumption, Related to Fuel Consumption, approx. % 3-
Auxillaries
Alternator 2 x Voltage V 28 Current A 100 Starter Motor Voltage V 24 Rating kW 7, Air Compressor Delivery, at Rated Power dm³/min 890 Operating Pressure bar 12 Transmission Ratio 0, Delivery (Drawing) 550 10 402 Power Steering Pump xxx
Power Take-Off
Power - Take - Off, Rear xxx Output, Front xxx Power - Take - Off (Air Compressor) xxx
Engine Brake
Drag Power at max. Permissible Brake Speed, Short-Time kW 55 Drag Power (Drawing) 700 00 603 Brake Speed max. Permissible, Continuous rpm 2300 max. Permissible, Short-Time rpm 2500
260 kW, 1600 Nm, D457.951, On Highway EURO 4, Bus , Stadtbus
Date: 21.12.
The technical data indicated here apply to the structure of engine according to the basis engine type (at ambient conditions +25°C /1013 mbar). Deviations by variants/options in the scope of supply are possible. Technical data indicated as "xxx" are not contained in the basis scope of supply and not relevant for the engine model. Technical data indicated as "---" are contained in the basis scope of supply but not yet documented ("in work"). Subject to change
Exhaust Aftertreatment
NOx-Reduction Trade name AdBlue Standard DIN 70070 / ISO 22241 Dosing Unit AdBlue Dosing Unit (drawing) 000 96 003 Voltage V 24 required air pressure, approx. bar 5, AdBlue Pressure bar 4,6-5, AdBlue Pump Unit Voltage V 24 AdBlue pressure, max. bar 0, AdBlue Volume flow l/h 18 Pressure Regulator Voltage V 24 Consumption of compressed air for AdBlue l/min 22,
