Mercedes-Benz M271 engine

Last updated
Mercedes-Benz M271
Motor M271.jpg
Overview
Manufacturer Mercedes-Benz
Production2002–2015
Layout
Configuration Straight-4
Displacement 1.6 L (1,597 cc)
1.8 L (1,796 cc)
Cylinder bore 82 mm (3.23 in)
Piston stroke 75.6 mm (2.98 in)
85 mm (3.35 in)
Cylinder block materialCast aluminium
Cylinder head materialAluminium
Valvetrain DOHC 4 valves x cyl. and VVT
Combustion
Supercharger In some versions and intercooled
Turbocharger In DE18LA (M271Evo, 271.8XX)
Fuel system Sequential fuel injection
Direct injection
Fuel type Gasoline
Cooling system Water cooled
Output
Power output 122–204 PS (90–150 kW; 120–201 hp)
Chronology
Predecessor Mercedes-Benz M111 engine
Successor Mercedes-Benz M274 engine

The Mercedes-Benz M271 engine is a straight-4 automobile piston engine family used in the 2000s (decade).

Contents

All M271 engines are built in Untertürkheim, Germany. The family has a cast aluminium engine block and aluminium DOHC cylinder heads with 4 valves per cylinder and variable valve timing and a coil-on-plug ignition system.

KE18 ML (271.9XX)

The KE18 ML is a 1.8 L (1,796 cc) version. Bore and stroke is 82 mm × 85 mm (3.23 in × 3.35 in). Output ranges from 122 PS (90 kW; 120 hp) at 5200 rpm to 194 PS (143 kW; 191 hp) at 5800 rpm.

It uses sequential fuel injection, is supercharged and intercooled, and features fracture-split forged steel connecting rods. A version running on natural gas was introduced in the German market in 2002.

Applications: [1]

DE18 ML (271.942)

This engine had the same dimensions as E18 ML and almost the same features including a supercharger, but used CGI (Stratified Charged Gasoline Injection) gasoline direct injection. It has been produced since 2003 in only one version, with an output of 170 PS (125 kW; 168 hp) at 5300 rpm. The production ceased in 2005.

Applications: [3]

KE16 ML (271.910)

The KE16 ML is a 1.6 L (1,597 cc) version introduced in 2008. Bore and stroke is 82 mm × 75.6 mm (3.23 in × 2.98 in). It shares the same features with the KE18ML version, like supercharger and multi-point fuel injection. Output ranges from 129 PS (95 kW; 127 hp) at 5000 rpm to 156 PS (115 kW; 154 hp) at 5200 rpm.

Applications: [4]

DE18 LA (M271Evo, 271.8XX)

This is the last version of M271 engine family. Dimensions are the same as E18 ML and DE18 ML, but the supercharger has been replaced with a turbocharger; like the DE18 ML it uses the CGI (Stratified Charged Gasoline Injection) gasoline direct injection. Output ranges from 156 PS (115 kW; 154 hp) at 5200 rpm to 204 PS (150 kW; 201 hp) at 5500 rpm.

Applications: [5]

Other uses

The engine in 2.0-litre naturally aspirated form is used by German automotive company HWA Team as the basis for a Mercedes-Benz motor racing engine and has been the engine used widely in Formula 3 motor racing powering championship winning drivers across Europe and further afield. [6]

See also

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References

  1. "Mercedes-Benz M271 engine". Australian Car Review and Valuation. Australian Car Review and Valuation. Retrieved 22 April 2015.
  2. "C 160 Sportcoupé". mercedes-benz-publicarchive.com. Retrieved 13 March 2024.
  3. "Mercedes-Benz M271 engine". Australian Car Review and Valuation. Australian Car Review and Valuation. Retrieved 22 April 2015.
  4. "Mercedes-Benz M271 engine". Australian Car Review and Valuation. Australian Car Review and Valuation. Retrieved 22 April 2015.
  5. "Mercedes-Benz M271 engine". Australian Car Review and Valuation. Australian Car Review and Valuation. Retrieved 22 April 2015.
  6. "FORMULA 3 – ENGINES OF SUCCESS". HWA AG. Retrieved 21 October 2024.