Mercedes-Benz M 112
| Mercedes-Benz / AMG | |
|---|---|
|
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| Manufacturer: | Mercedes-Benz / AMG |
| Production period: | 1997-2005 |
| Design: | V , six-cylinder |
| Engines: | 2.4 liters (2398 cm³) to 3.7 liters (3724 cm³) |
| Previous model: | M 104 |
| Successor: | M 272 |
| Similar models: | M 113 , M 137 |
The M 112 is a V6 - gasoline engine from Mercedes-Benz , which in March 1997 in the 210 series E-Class was introduced. It replaced the M 104 . In 2004 the successor M 272 was presented.
Technically, the M 112 is closely related to the V8 M 113 . Both have a cylinder distance of 106 mm and an angle of 90 ° between the cylinder banks. As a result, they can largely be manufactured on the same production facilities and there are many identical parts. Both have an engine block made of light alloy with cast-in cylinder liners made of Silitec ( Al - Si - alloy ), and a light alloy cylinder head having an overhead camshaft per cylinder bank.
The four-bearing crankshaft has split crank pins for even firing intervals of 120 ° crank angle. They sit directly next to one another without an intermediate beam so that the offset of the cylinder banks and thus the overall length of the engine do not have to be increased. Above the crankshaft in cylinder V there is a balance shaft that rotates against the crankshaft at the same speed. As a result, the inertial forces and moments of the first order are completely balanced. The camshafts and balancer shaft are driven by a double roller chain.
Like the M 113, the M 112 has two inlet valves and one outlet valve per cylinder , which are operated via light metal roller rocker arms with hydraulic valve clearance compensation. The individual exhaust valve results in a smaller surface area of the exhaust duct and therefore less heat dissipation from the exhaust gas to the cylinder head, especially when the engine is cold. As a result, the catalytic converter reaches its operating temperature more quickly. The thin and double-walled sheet metal exhaust manifolds , which absorb little heat, also contribute to this.
There are two spark plugs on the right and left of the exhaust valve in each combustion chamber . The arrangement of valves and candles is symmetrical. The double ignition works with delayed activation of the two candles. This achieves fast and even combustion, greater security against combustion misfires and higher tolerance against mixture lean and exhaust gas recirculation . As the heat load on the piston increases as a result of the double ignition , it is cooled by oil spray nozzles which spray engine oil from below against the piston crown. The candles in each combustion chamber are also controlled from one work cycle to the next in alternating order. This results in a more even and lower heat load on the piston and even burning of both candles.
The M 112 was available with a displacement of 2.4 to 3.7 liters .
Data
| Engine designation | Bore × stroke [mm] |
Cubic capacity [cm 3 ] |
compression | Power [kW / PS] at speed [1 / min] |
Torque [Nm] at speed [1 / min] |
|---|---|---|---|---|---|
| M 112 E 24 | 83.2 x 73.5 | 2398 | 10.0: 1 | 125/170 at 5900 | 225 at 3000-5000 |
| M 112 E 26 | 89.9 x 68.2 | 2597 | 10.5: 1 | 125/170 at 5500 | 240 at 4500 |
| M 112 E 28 | 89.9 x 73.5 | 2799 | 10.0: 1 | 150/204 at 5700 | 270 at 3000-5000 |
| M 112 E 32 | 89.9 × 84 | 3199 | 10.0: 1 | 140/190 at 5600 | 270 at 2750-4750 |
| M 112 E 32 | 89.9 × 84 | 3199 | 10.0: 1 | 160/218 at 5700 | 310 at 3000-4600 |
| M 112 E 32 | 89.9 × 84 | 3199 | 10.0: 1 | 165/224 at 5600 | 315 at 3000-4800 |
| M 112 E 32 ML * | 89.9 × 84 | 3199 | 9.0: 1 | 260/354 at 6100 | 450 at 4400 |
| M 112 E 37 | 97 × 84 | 3724 | 10.0: 1 | 170/231 at 5600 | 345 at 2500-4500 |
| M 112 E 37 | 97 × 84 | 3724 | 10.0: 1 | 173/235 at 5750 | 345 at 3000-4500 |
| M 112 E 37 | 97 × 84 | 3724 | 10.0: 1 | 180/245 at 5750 | 350 at 3000-4500 |
- M = Motor, 112 = type, E = manifold injection, 24 = displacement (2.4 liters), ML = compressor ( M echanischer L vein).
commitment
M 112 E 24
| Sales description | model series | Construction period |
|---|---|---|
| Displacement: 2398 cm³, power: 125 kW (170 hp) at 5900 rpm, torque: 225 Nm at 3000-5000 rpm | ||
| C 240 | W / S 202 | 1997-2000 |
| E 240 | W / S 210 | 1997-2000 |
M 112 E 26
| Sales description | model series | Construction period |
|---|---|---|
| Displacement: 2597 cm³, power: 125 kW (170 hp) at 5500 rpm, torque: 240 Nm at 4500 rpm | ||
| C 240 T | S 202 | 2000-2001 |
| C 240 | W / S 203 | 2000-2005 |
| CLK 240 | C / A 209 | 2002-2005 |
| E 240 | W / S 210 | 2000-2002 |
| Displacement: 2597 cm³, power: 130 kW (177 hp) at 5750 / min, torque: 240 Nm at 4500 / min | ||
| E 240 | W / S 211 | 2002-2006 |
M 112 E 28
| Sales description | model series | Construction period |
|---|---|---|
| Displacement: 2799 cm³, power: 145 kW (197 hp) at 5800 rpm, torque: 265 Nm at 3000 rpm | ||
| C 280 | W / S 202 | 1997-2000 |
| Displacement: 2799 cm³, power: 150 kW (204 hp) at 5700 rpm, torque: 270 Nm at 3000-5000 rpm | ||
| SL 280 | R 129 | 1998-2001 |
| E 280 | W / S 210 | 1997-2002 |
| S 280 | W 220 | 1998-2005 |
M 112 E 32
| Sales description | model series | Construction period |
|---|---|---|
| Displacement: 3199 cm³, output: 140 kW (190 hp) at 5600 rpm, torque: 270 Nm at 2750–4750 rpm | ||
| Viano 3.0 / Viano 119 | W / V 639 | 2003–2008 / since 2010 |
| Displacement: 3199 cm³, output: 160 kW (218 hp) at 5600 rpm, torque: 305 Nm at 2800-4750 rpm | ||
| Viano 3.2 / Viano 122 | W / V 639 | 2003-2004 |
| Displacement: 3199 cm³, output: 160 kW (218 hp) at 5700 rpm, torque: 310 Nm at 3000–4600 rpm | ||
| ML 320 | W 163 | 1997-2002 |
| SLK 320 | R 170 | 2000-2004 |
| C 320 | W / S 203 | 2000-2005 |
| CLK 320 | C / A 208 | 1997-2003 |
| CLK 320 | C / A 209 | 2002-2005 |
| Chrysler Crossfire | - | 2003-2007 |
| Displacement: 3199 cm³, power: 165 kW (224 hp) at 5600 rpm, torque: 315 Nm at 3000-4800 rpm | ||
| SL 320 | R 129 | 1998-2001 |
| E 320 | W / S 210 | 1997-2002 |
| E 320 | W / S 211 | 2003-2006 |
| P. 320 | W 220 | 1998-2002 |
M 112 E 32 ML
| Sales description | model series | Construction period |
|---|---|---|
| Displacement: 3199 cm³, power: 246 kW (335 hp) at 6100 rpm, torque: 420 Nm at 3500 rpm | ||
| Chrysler Crossfire SRT-6 | - | 2004-2007 |
| Displacement: 3199 cm³, output: 260 kW (354 hp) at 6100 rpm, torque: 450 Nm at 4400 rpm | ||
| SLK 32 AMG | R 170 | 2001-2004 |
| C 32 AMG | W / S 203 | 2000-2004 |
M 112 E 37
| Sales description | model series | Construction period |
|---|---|---|
| Displacement: 3724 cm³, output: 170 kW (231 hp) at 5600 rpm, torque: 345 Nm at 2500–4500 rpm | ||
| Viano 3.5 / Vito 123 | W / V 639 | 2004-2008 |
| Displacement: 3724 cm³, output: 173 kW (235 hp) at 5750 rpm, torque: 345 Nm at 3000–4500 rpm | ||
| ML 350 | W 163 | 2003-2005 |
| Displacement: 3724 cm³, power: 180 kW (245 hp) at 5700 rpm, torque: 350 Nm at 3000–4500 rpm | ||
| ML 350 | W 163 | 2002-2003 |
| S 350 | W / V 220 | 2002-2005 |
| SL 350 | R 230 | 2003-2006 |
