Mercedes-Benz M113 engine

The M 113 is an eight -cylinder V- engine ( gasoline engine ) of Mercedes -Benz, in September 1997 in the E-Class ( 210 series ) was introduced, and later in the S-Class 220 series and other models. It replaced the 1989 -built M 119. In September 2005, the successor M 273 was used. In some models, the M 113 was also after the change of generations (2005/ 06 ) is still installed.

Technical Description

The M 113 is available with both mechanical supercharging (compressor), as well as without. He is technically related closely with the V6 M 112. Both engines have the same angle of 90 ° between the cylinder banks, and uniform cylinder spacing of 106 mm. This allows them to be efficiently produced on the same production equipment and have many identical parts. Both have an engine block made ​​of light alloy with cast-in cylinder liners Silitec (Al -Si alloy ) and a light alloy cylinder head with overhead camshaft per cylinder bank. The camshaft, and the M 112 and the balancer shaft are driven by a double roller chain.

The cylinders have the motors M 112 and M 113 two intake valves and one exhaust valve, operated on light metal roller rocker with hydraulic valve clearance compensation. Through the single exhaust valve, a smaller surface area of the exhaust port, thereby giving especially when engine is cold less heat loss from the exhaust gas at the cylinder head. The catalyst achieved its operating temperature faster. Also contributes to the thin-walled sheet metal exhaust manifold which receives very little heat.

Each combustion chamber there are two spark plugs left and right next to the outlet valve. The arrangement of valves and candles is symmetrical. The dual ignition system works with simultaneous activation of the two candles. This achieves a rapid and uniform combustion, greater security against misfires and higher tolerance to leaner mixture and exhaust gas recirculation. Since the dual ignition increases the heat load on the piston, it is cooled by oil spray nozzles, spray the engine oil from below the piston crown. The candles in each combustion chamber are also driven by a working stroke to the next in an alternating sequence. This results in a more uniform and lower heat load of the piston and even burn both candles.

The 5-liter version of the M 113 is optionally available with cylinder deactivation ( ZAS ) available. At low loads and speeds up to 3500 rpm of the motor only runs with four cylinders. There are two cylinders of each bank shut down, so that the remaining cylinders at equal intervals (180 ° crank angle) light. Here also, the valves are closed. The rocker arms are in two parts for this and the parts can be detached from one another by a hydraulically actuated piston. The ZAS improved engine efficiency due to smaller throttle losses and higher effective compression, because the cylinders are filled better. The fuel consumption of the S 500 ( 220 series ) is reduced by the ZAS according to the manufacturer by 0.9 l/100 km.

Based on the variant E 55 ML Mercedes- Benz M 155 has been developed for the Mercedes -Benz SLR McLaren.

Data

* M = motor, 113 = Series, E = manifold injection, 55 = Engine displacement (5.5 liters), ML = compressor ( Mechanical loader ).

Use

M 113 E 43

M 113 E 50

M 113 E 55

M 113 E 55 ML

* ML is in the engine designation for compressor

  • Mercedes- Benz engine
  • Motor model ( V engine )
Mercedes-AMG Mercedes-Benz M112 engine V8 engine Mercedes-Benz W210 Mercedes-Benz W220 Aluminium Variable displacement Mercedes-Benz C208 Mercedes-Benz W211 Mercedes-Benz R-Class Mercedes-Benz CLK-Class#CLK GTR and CLK DTM
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