Mercedes-Benz M112 engine#E 32 ML
{{Infobox automobile engine
| name = Mercedes-Benz M112 engine
| image = Motor im E320 4Matic in einer E Klasse der Baureihe W211.jpg
| caption =
| manufacturer = Mercedes-Benz
| production = 1996–2015
| configuration = 90° V6
| block = Aluminum
| head = Aluminum
| valvetrain = SOHC 3 valves x cyl.
| fueltype = Gasoline
| fuelsystem = Sequential fuel injection
| coolingsystem = Water cooled
| redline = 6,000-6,400 rpm
| supercharger = IHI Twin-screw type (in some versions)
| displacement = {{convert|2398|cc|L|1|abbr=on|disp=flip}}
{{convert|2597|cc|L|1|abbr=on|disp=flip}}
{{convert|2799|cc|L|1|abbr=on|disp=flip}}
{{convert|3199|cc|L|1|abbr=on|disp=flip}}
{{convert|3724|cc|L|1|abbr=on|disp=flip}}
| bore = {{convert|83.2|mm|2|abbr=on}}
{{convert|89.9|mm|2|abbr=on}}
{{convert|97|mm|2|abbr=on}}
| stroke = {{convert|68.2|mm|2|abbr=on}}
{{convert|73.5|mm|2|abbr=on}}
{{convert|84|mm|2|abbr=on}}
| power = {{convert|125-260|kW|PS bhp|0|abbr=on}}
| torque = {{convert|225-450|Nm|lbft|0|abbr=on}}
| predecessor = Mercedes-Benz M104 (inline-6)
| successor = Mercedes-Benz M272
}}
The Mercedes-Benz M112 engine is a gasoline-fueled, 4-stroke, spark-ignition, internal-combustion automobile piston V6 engine family used in the 2000s. Introduced in 1996, it was the first gasoline V6 engine ever built by Mercedes. A short time later the related M113 V8 was introduced.
All are built in Bad Cannstatt, Germany, except the supercharged C 32 AMG and SLK 32 AMG, assembled in Affalterbach, Germany.
All M112 engines have silicon/aluminum (Alusil) engine blocks with a 90° vee angle. The aluminum SOHC cylinder heads have 3 valves per cylinder. All use sequential fuel injection with two spark plugs per cylinder. All have forged steel connecting rods, a one-piece cast camshaft, iron-coated aluminum pistons and a magnesium intake manifold. To deal with the vibration problems of a 90 degree V6, a balancer shaft was installed in the engine block between the cylinder banks. This essentially eliminated first and second order vibration problems (see engine balance). A dual-length Variable Length Intake Manifold is fitted to optimise engine flexibility.
E24
The E24 is a {{convert|2398|cc|L|1|abbr=on|disp=flip}} version. Bore and stroke is {{convert|83.2x73.5|mm|2|abbr=on}}. The engine produces {{convert|168|bhp|kW PS|0|abbr=on}} at 5900 rpm and {{convert|225|Nm|lbft|0|abbr=on}} of torque between 3000 and 5500 rpm. The compression ratio is 10.0:1.{{cite web|url=https://motor-car.net/mercedes-engines/item/20013-mercedes-m112|title=Mercedes-Benz M112 V6 petrol engine|website=motor-car.net|accessdate=8 January 2020 |archiveurl=https://web.archive.org/web/20200929224712/https://motor-car.net/mercedes-engines/item/20013-mercedes-m112 |archivedate=29 September 2020}}{{Cite web|url=https://mercedes-benz-publicarchive.com/marsClassic/en/instance/ko/C-240--W-202-E-24-1997---2000.xhtml?oid=5488|title=C 240 / W 202 E 24, 1997 - 2000|access-date=28 November 2023|website=mercedes-benz-publicarchive.com}}
Applications:
- M112.910: 1996–2000 C 240 (W202)
- M112.911: 1996–2000 E 240 (W210)
E26
The E26 is a {{convert|2597|cc|L|1|abbr=on|disp=flip}} version. Bore and stroke is {{convert|89.9x68.2|mm|2|abbr=on}}. Output is {{convert|125|kW|PS bhp|0|abbr=on}} ECE at 5,500 rpm {{convert|240|Nm|lbft|0|abbr=on}} of torque at 4,500 rpm in all applications except in the 2003-2005 W211 E-Class where power rose to {{convert|130|kW|PS bhp|0|abbr=on}}.{{Cite web |title=Detailed specs review of 2004 Mercedes-Benz E 240 model for Europe |url=https://www.automobile-catalog.com/car/2004/1540670/mercedes-benz_e_240.html |access-date=2023-02-18 |website=www.automobile-catalog.com}}{{Cite web |title=2002-2005 Mercedes E 240 W211 Specs & Performance, Ranks & Comparisons 🚘 |url=https://www.encycarpedia.com/mercedes/02-e-240-saloon |access-date=2023-02-18 |website=encyCARpedia |language=en-GB}}{{Cite web |title=Mercedes Benz E Class (W211) 240 4Matic Technical Specs, Fuel Consumption, Dimensions |url=https://www.ultimatespecs.com/car-specs/Mercedes-Benz/2568/Mercedes-Benz-E-Class-(W211)-240-4Matic.html/amp |access-date=2023-02-18 |website=www.ultimatespecs.com}} The compression ratio is raised to 10.5:1.{{Cite web|url=https://mercedes-benz-publicarchive.com/marsClassic/en/instance/ko/C-240--W-203-E-26-2000---2004.xhtml?oid=5535|title=C 240 / W 203 E 26, 2000 - 2004|access-date=28 November 2023|website=mercedes-benz-publicarchive.com}}
Applications:
M112.912:
- 1999–2005 C 240 (W203)
- 2001–2005 CLK 240 (C209)
M112.914:
- 1999–2002 E 240 (W210)
M112.916:
- 2002–2005 C 240 4MATIC (W203)
M112.917:
- 2001–2005 E 240 (W211)
M112.950:
- 2000–2001 C 240 (S202)
E28
The E28 is a {{convert|2799|cc|L|1|abbr=on|disp=flip}} version. Bore and stroke is {{convert|89.9x73.5|mm|2|abbr=on}}. It produces {{convert|201|bhp|kW PS|0|abbr=on}} (W220 S280, R129 SL280 and W210 E280) or {{convert|194|bhp|kW PS|0|abbr=on}} (W202 C280) at 5,700 rpm and {{convert|270|Nm|lbft|0|abbr=on}} of torque between 3,000 and 5,000 rpm. The compression ratio is 10.0:1.{{Cite web|url=https://mercedes-benz-publicarchive.com/marsClassic/en/instance/ko/C-280-V6-engine--W-202-E-28-1997---2000.xhtml?oid=5492|title=C 280 (V6 engine) / W 202 E 28, 1997 - 2000|access-date=28 November 2023|website=mercedes-benz-publicarchive.com}}
Applications:
- M112.920: 1996–2000 C 280 (W202)
- M112.921: 1996–2002 E 280 (W210)
- M112.922: 1997–2005 S 280 (W220)
- M112.923: 1997–2001 SL 280 (R129)
E32
File:Chrysler Crossfire fastback blue engine.jpg
The E32 is a {{convert|3199|cc|L|1|abbr=on|disp=flip}} version. Bore remains at {{convert|89.9|mm|2|abbr=on}} but the engine is stroked to {{convert|84|mm|2|abbr=on}}. Output is 215-224 bhp ECE at 5,700 rpm (depending on model) with {{convert|315|Nm|lbft|0|abbr=on}} of torque at 3,000-4,800 rpm. The compression ratio is 10.0:1. It has fracture-split forged steel connecting rods.{{Cite web|url=https://mercedes-benz-publicarchive.com/marsClassic/en/instance/ko/CLK-320--C-208-E-32-1997---1999.xhtml?oid=4564|title=CLK 320 / C 208 E 32, 1997 - 1999|access-date=28 November 2023|website=mercedes-benz-publicarchive.com}}
Applications:
- M112.940: 1996–2002 CLK 320 (C208)
- M112.941: 1998–2003 E 320 (W210)
- M112.942: 1998–2003 ML 320 (W163)
- M112.943: 1998–2001 SL 320 (R129)
- M112.944: 1998–2002 S 320 (W220)
- M112.945: 1997–2006 G 320 (W463)
- M112.946: 2000–2005 C 320 (W203) & C 320 SportCoupé (CL203)
- M112.947: 2000–2003 SLK 320 (R170)
- M112.949: 2002–2005 E 320 (W211)
- M112.951: 2003–2015 Viano 3.0/Vito 119 (W639)
- M112.953: 2002–2005 C 320 4MATIC (W203)
- M112.954: 2003–2004 E 320 4MATIC (W211)
- M112.955: 2002–2005 CLK 320 (C209)
- 2004–2008 Chrysler Crossfire
E32 ML
File:2003MY Mercedes AMG 3.2 litre V6 supercharged engine. October 2012.jpg
The E32 Kompressor is a special version of the {{convert|3199|cc|L|1|abbr=on|disp=flip}}, fitted with a helical Twin-screw type supercharger. The supercharger was developed in conjunction with IHI and features Teflon-coated rotors producing overall boost of {{convert|14.5|psi|bar|abbr=on}} with the factory 74mm clutch-activated pulley. A water-to-air intercooler made by Garrett is fitted beneath the supercharger inside the V, with a 0.8L Heat-Exchanger mounted under the bumper run by an electric water pump. Output is {{convert|260|kW|PS bhp|0|abbr=on}} ECE at 6,100 rpm with {{convert|450|Nm|lbft|0|abbr=on}} of torque at 3,000-4,600 rpm. The compression ratio is 9.0:1.{{Cite web|url=https://mercedes-benz-publicarchive.com/marsClassic/en/instance/ko/SLK-32-AMG--R-170-E-32-ML-2001---2004.xhtml?oid=5023|title=SLK 32 AMG / R 170 E 32 ML, 2001 - 2004|access-date=28 November 2023|website=mercedes-benz-publicarchive.com}}
Applications:
- M112.960: 2000–2004 SLK 32 AMG (R170)
- M112.961: 2000–2004 C 32 AMG (W203) & C 32 AMG SportCoupé (CL203)
- 2002 A 32K AMG
- 2005–2006 Chrysler Crossfire SRT-6
E37
The E37 is a {{convert|3724|cc|L|1|abbr=on|disp=flip}} version. It retains the stroke of the E32 but is bored to {{convert|97|mm|2|abbr=on}}. Output is {{convert|173|to|180|kW|PS bhp|0|abbr=on}} ECE at 5,750 rpm with {{convert|344|Nm|lbft|0|abbr=on}} of torque at 3,000-4,500 rpm. The compression ratio is 10.0:1.{{Cite web|url=https://mercedes-benz-publicarchive.com/marsClassic/en/instance/ko/ML-350--W-163-E-37-2002---2004.xhtml?oid=4819|title=ML 350 / W 163 E 37, 2002 - 2004|access-date=28 November 2023|website=mercedes-benz-publicarchive.com}}
Applications:
- M112.970: 2001–2004 ML 350 (W163)
- M112.972: 2002–2005 S 350 (W220)
- M112.975: 2002–2005 S 350 4MATIC (W220)
- M112.973: 2001–2006 SL 350 (R230)
- 2004–2008 V 350