The Mercedes-Benz M137 engine was a
naturally aspirated
Naturally may refer to:
;Albums
* ''Naturally!'', an album by Nat Adderley
* ''Naturally'' (Houston Person album)
* ''Naturally'' (J. J. Cale album)
* ''Naturally'' (John Pizzarelli album)
* ''Naturally'' (Sharon Jones album)
* ''Naturally'' ...
,
SOHC
An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion cha ...
60°
V12 engine
A V12 engine is a twelve-cylinder piston engine where two banks of six cylinders are arranged in a V configuration around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines.
The fi ...
, with three valves per cylinder. It was built to replace the larger and heavier, yet more powerful,
DOHC
An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion c ...
, four valves per cylinder, naturally aspirated, 6.0 L
M120 V12 unit. The M137 was used briefly between 1998 and 2002 for the
W220 S-Class and
C215 CL-Class. The architecture was similar to
M112 and
M113 engines and was designed to match the overall dimensions of a V8 unit with an
undersquare
In a reciprocating piston engine, the stroke ratio, defined by either bore/stroke ratio or stroke/bore ratio, is a term to describe the ratio between cylinder bore diameter and piston stroke length. This can be used for either an internal comb ...
internal measurements. The crankcase was cast in a lightweight alloy with "Silitec" (silicon/aluminium) cylinder liners to save weight. The new powerplant was 80 kg lighter than its predecessor and offered better fuel consumption thanks to a cylinder deactivation technology. Both displacement variants have 10:1 compression ratio.
The M137 was replaced by the more powerful
twin-turbocharged
Twin-turbo (not to be confused with a twincharger setup, which is a combination of a supercharger and a turbocharger) refers to an engine in which two turbochargers work in tandem to compress the intake fuel/air mixture (or intake air, in the case ...
M275 engine.
E58
Mercedes introduced M137 engine in its 5.8-litre form in
S 600 and
CL 600 models. The internal measurements of of bore and stroke translated to a total displacement of . The resulting power output was at 5500 rpm and torque figures of at 4250 rpm.
Applications:
* 1998–2002
S 600
* 1998–2002
CL 600
E63 AMG
In 2001 Mercedes and
AMG introduced a series of special high-output models equipped with a larger-displacement M137 engine. Cars were available through AMG dealers only and sold to selected European and Asian customers. The 2001 S 63 AMG was produced in only 70 units. The 2001 CL 63 AMG existed in only 26 examples and the rarest of all was the 2002
G 63 AMG with only five units produced. The total displacement of was thanks to an internal measurements of . The resulting power output was at 5500 rpm and torque figures of at 4400 rpm.
Applications:
* 2001
S 63 AMG
* 2001
CL 63 AMG
* 2002
G 63 AMG
See also
*
List of Mercedes-Benz engines
Mercedes-Benz has produced a range of petrol, diesel, and natural gas engines. This is a list of all internal combustion engine models manufactured.
Petrol engines Straight-three
* M160, 0.6 – 0.7 L (1998–2007)
* M281, 0.9 - 1.0 L (20 ...
References
{{DEFAULTSORT:Mercedes-Benz M137 Engine
Mercedes-Benz engines
V12 engines
Gasoline engines by model