Mercedes-Benz M271 engine
Encyclopedia
The Mercedes-Benz
Mercedes-Benz
Mercedes-Benz is a German manufacturer of automobiles, buses, coaches, and trucks. Mercedes-Benz is a division of its parent company, Daimler AG...

 M271 engine is a straight-4
Straight-4
The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....

 automobile
Automobile
An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

 piston engine family used in the 2000s.

All M271 engines are built in Untertürkheim, Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. The family has a cast aluminum engine block and aluminum DOHC cylinder heads with 4 valves per cylinder
Multi-valve
In automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing and can operate at higher revolutions per minute than a two-valve engine, delivering more power.- Multi-valve rationale :A multi-valve design...

 and variable valve timing
Variable valve timing
In internal combustion engines, variable valve timing , also known as Variable valve actuation , is a generalized term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine...


E18ML

The E18ML is a 1.8 L (1796 cc) version. Bore is 82 mm and stroke is 85 mm. Output ranges from 122 PS at 5200 rpm to 192 PS at 5800rpm.

It uses SFI fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....

, is supercharged and intercooled, and features fracture-split forged
Forged
Forged is a book written by biblical scholar, Bart D. Ehrman which attempts to analyze the historical accuracy of the Christian Bible. The book posits that 11 or more books out of the 27 books of the Christian New Testament canon were written as certain types of forgeries related to the politics...

 steel connecting rod
Connecting rod
In a reciprocating piston engine, the connecting rod or conrod connects the piston to the crank or crankshaft. Together with the crank, they form a simple mechanism that converts linear motion into rotating motion....

s.
A version running on natural gas was introduced in the German market in 2002.

Applications:
  • 2002 Mercedes-Benz CLK-Class (W209)
    Mercedes-Benz W209
    The Mercedes-Benz C209/A209 cars have been produced since 2002. They are sold under the CLK-Class model names. The C209/A209 is based on the W203 C-Class...

     CLK 200K
  • 2002 Mercedes-Benz C-Class (W203) C 180K, C 200K, C 230K
  • 2002 Mercedes-Benz C-Class Sportcoupé C 160K, C 180K, C 200K, C 230K
  • 2002 Mercedes-Benz E-Class (W211)
    Mercedes-Benz W211
    The Mercedes-Benz W211 is a mid-size luxury car–executive car which was produced by the German automaker Mercedes-Benz from 2002 to 2009, under the E-Class model names. The W211 models replaced the W210 E-Class models and were superseded by the Mercedes-Benz W212 in 2009...

     E 200K
  • 2004 Mercedes-Benz SLK-Class (R171)
    Mercedes-Benz R171
    R171 represents the second generation of Mercedes-Benz SLK and is slightly larger than its predecessor the R170. The Mercedes-Benz SLK-Class is a luxury roadster built by the German manufacturer Mercedes-Benz since 1997...

     SLK 200K
  • 2007 Mercedes-Benz C-Class (W204) C 180K, C 200K
  • 2008 Mercedes-Benz CLC-Class CLC 180K, CLC 200K

DE18ML

This engine had the same dimensions as E18ML and almost the same features, but used CGI gasoline direct injection
Gasoline direct injection
In internal combustion engines, gasoline direct injection , also known as petrol direct injection or direct petrol injection, is a variant of fuel injection employed in modern two-stroke and four-stroke gasoline engines...

. It has been produced since 2003 in only one version, with an output of 170 PS at 5300 rpm. The production ceased in 2005.

Applications:
  • 2003 Mercedes-Benz C-Class Sportcoupé C 200K CGI
  • 2003 Mercedes-Benz C-Class (W203) C 200K CGI
  • 2003 Mercedes-Benz CLK-Class (W209)
    Mercedes-Benz W209
    The Mercedes-Benz C209/A209 cars have been produced since 2002. They are sold under the CLK-Class model names. The C209/A209 is based on the W203 C-Class...

     CLK 200K CGI

E16ML

The E16 is a 1.6 L (1597 cc) version introduced in 2008. Bore is 82 mm and stroke is 75.6 mm. It shares the same features with the E18ML version, like supercharger and multi-point injection. Output ranges from 129 PS at 5000 rpm to 156 PS at 5200 rpm.

Applications:
  • 2008 Mercedes-Benz CLC-Class CLC 160
  • 2008 Mercedes-Benz C-Class (W204) C 180K

DE18LA

This is the last version of M271 engine family. Dimensions are the same as E18ML and DE18ML, but the supercharger has been replaced with a turbocharger; like the DE18ML it uses the CGI gasoline direct injection
Gasoline direct injection
In internal combustion engines, gasoline direct injection , also known as petrol direct injection or direct petrol injection, is a variant of fuel injection employed in modern two-stroke and four-stroke gasoline engines...

. Output ranges from 156 PS at 5200 rpm to 204 PS at 5500 rpm.

Applications:
  • 2009 Mercedes-Benz C-Class (W204) C 180 CGI, C 200 CGI, C 250 CGI
  • 2009 Mercedes-Benz E-Class (W212)
    Mercedes-Benz W212
    The Mercedes-Benz W212 is a sedan sold as the ninth-generation E-Class, replacing the previous W211 model. C207 is the chassis code for the related E-Class Coupe, a replacement for the CLK-class coupe and cabriolet...

     E 200 CGI, E 250 CGI
  • 2009 Mercedes-Benz E-Class Coupé (C207)
    Mercedes-Benz W212
    The Mercedes-Benz W212 is a sedan sold as the ninth-generation E-Class, replacing the previous W211 model. C207 is the chassis code for the related E-Class Coupe, a replacement for the CLK-class coupe and cabriolet...

    E 250 CGI
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