Mercedes-Benz M139 engine

Last updated
Mercedes-Benz M139
Mercedes-AMG M139 at IAA 2019 IMG 0505.jpg
Overview
Manufacturer Mercedes-AMG
Production2019-present
Layout
Configuration Inline-four engine
Displacement 2.0 L (1,991 cc)
Cylinder bore 83 mm (3.27 in)
Piston stroke 92 mm (3.62 in)
Cylinder block material Aluminium alloy
Cylinder head materialAluminium alloy
Valvetrain DOHC
Compression ratio 9.0:1
Combustion
Turbocharger One twin-scroll, electrically assisted
Fuel systemCombined Direct and Port Fuel Injection
Fuel type Gasoline
Output
Power output 285 kW (387 PS; 382 hp) base version 310 kW (421 PS; 416 hp) S-model
Torque output 480 N⋅m (354 lb⋅ft) (base version) 500 N⋅m (369 lb⋅ft) (S-model)
Dimensions
Dry weight 160.5 kg (354 lb)
Chronology
Predecessor Mercedes-Benz M133 engine

The M139 is a turbocharged inline-four engine produced by Mercedes-Benz. It is the successor of the M133 engine. It is also the first four-cylinder engine by AMG to be specified with two outputs, to be assembled by hand using "one man, one engine" philosophy, and to be equipped with combined port and direct fuel injection system. At 310 kW (416 hp) on its introduction, M139 is the world's most powerful four-cylinder engine in serial production with specific output of 208 hp per litre or 104 hp per cylinder. [1] [2]

Contents

Design

The M139 engine is based on the current M260 engine, which is an upgraded version of the outgoing M270, sharing the same bore and stroke dimension as well as the block. Unlike the normal M260, the AMG engineers rotated the engine block 180 degrees so that the intake system is in the front of the engine, while the turbochargers and exhaust headers are situated between the engine and firewall. [3] The rotation optimises the engine air flow for higher performance and with shorter distance and fewer diversions. This also "allows the flattest possible and aerodynamically advantageous front section design." [4] The exhaust valves in M139 engine are bigger than ones in M133 engines for higher flow. The compression ratio is raised to 9.0:1 for M139 from 8.6:1 for M133. The two-stage fuel injection system, a first in AMG four-cylinder engine, has the piezo injectors delivering the fuel directly into the combustion chambers as first stage and solenoid valves in the manifolds as second stage for increased specific output.

An electrically assisted turbocharger system by Garrett Motion is used. [5]

Performance

The M139 engine has two specific outputs: 285 kW (387 PS; 382 hp) and 480 N⋅m (354 lb⋅ft) for the base version; and 310 kW (421 PS; 416 hp) and 500 N⋅m (369 lb⋅ft) for the S-model.

Models

EnginePowerTorqueYears
M139285 kW (382 hp)
at 6,500 rpm
480 N⋅m (354 lb⋅ft)
at 4,750-5,000 rpm
2019-
300 kW (402 hp)500 N⋅m (369 lb⋅ft)2022-
310 kW (416 hp)
at 6,750 rpm
500 N⋅m (369 lb⋅ft)
at 5,000-5,250 rpm
2019-
M139I350 kW (469 hp)
at 6,750 rpm
545 N⋅m (402 lb⋅ft)
at 5,250-5,500 rpm
2023-

M139 (285 kW version)

M139 (300 kW version)

M139 (310 kW version)

M139I (350 kW version)

Related Research Articles

<span class="mw-page-title-main">Mercedes-Benz CL-Class</span> Grand tourer car

The Mercedes-Benz CL-Class is a line of grand tourers which was produced by German automaker Mercedes-Benz, produced from 1992 to 2014. The name CL stands for the German Coupé Luxusklasse (Coupé-Luxury). It is considered by Mercedes as their premier model.

Mercedes-AMG GmbH, commonly known as AMG, is the high-performance subsidiary of Mercedes-Benz AG. AMG independently hires engineers and contracts with manufacturers to customize Mercedes-Benz AMG vehicles. The company has its headquarters in Affalterbach, Baden-Württemberg, Germany.

<span class="mw-page-title-main">Brabus</span> German high-performance automotive aftermarket tuning company

Brabus GmbH is a German high-performance automotive aftermarket tuning company founded in 1977 in Bottrop. Brabus specialises mainly in Mercedes-Benz, Maybach and Smart vehicles. They have also modified other vehicles too, including Porsche.

<span class="mw-page-title-main">Mercedes-Benz M275 engine</span> Reciprocating internal combustion engine

The Mercedes-Benz M275 engine is a twin-turbocharged and intercooled, all-aluminium, 60° V12 automobile piston engine family used in the 2000s to the 2010s. It is loosely based on the M137 naturally aspirated V12 sold between 1998 and 2002, and retains its SOHC, 3 valves per cylinder, twin-spark ignition layout, but differs with the addition of structural reinforcements to the engine block for improved rigidity which in turn yields greater reliability. The M275 V12 Bi-Turbo engine was modified with the addition of larger turbochargers. Several variations of the M275 V12 Bi-turbo engine have powered many top-of-the-range Mercedes-Benz and Maybach models since 2003.

<span class="mw-page-title-main">Mercedes-Benz M104 engine</span> Reciprocating internal combustion engine

The Mercedes-Benz M104 is a automobile straight-six engine produced from 1988 through 1999. It has a double overhead cam design with 4 valves per cylinder, and used a crossflow cylinder head. It replaced the M103 and was replaced by the M112 V6 starting in 1997. The bore spacing on all M104 engines is the same as M103 engines.

<span class="mw-page-title-main">Mercedes-Benz GLA</span> German small SUV (from 2013)

The Mercedes-Benz GLA is a subcompact luxury crossover SUV manufactured and marketed by Mercedes-Benz over two generations. It is essentially the SUV equivalent of the A-Class, and the smallest SUV marketed by the brand. The production version was revealed in August 2013 ahead of the 2013 Frankfurt Auto Show in September 2013.

<span class="mw-page-title-main">Mercedes-Benz GLC</span> German large SUV (from 2015)

The Mercedes-Benz GLC is a compact luxury crossover SUV introduced in 2015 for the 2016 model year that replaced the GLK-Class. According to Mercedes-Benz, it is the SUV equivalent to the C-Class.

<span class="mw-page-title-main">Mercedes-Benz M278 engine</span> Reciprocating internal combustion engine

The Mercedes-Benz M278 is a family of direct injected, Bi-turbocharged, V8 gasoline automotive piston engines.

<span class="mw-page-title-main">Mercedes-Benz M276 engine</span> Reciprocating internal combustion engine

The Mercedes–Benz M276 engine is a direct injected, gasoline automotive piston V6 engine.

<span class="mw-page-title-main">Mercedes-Benz CLA</span> German small car (from 2013)

The Mercedes-Benz CLA class is a series of luxury compact executive cars manufactured by Mercedes-Benz since 2013. The first generation was a four-door sedan based on the platform of the W176 A-Class and W246 B-Class compact cars, marketed as a four-door coupé. In 2015, Mercedes-Benz expanded the CLA family to include the Shooting Brake, a station wagon configuration. As the V177 A-Class sedan took its place as the budget-conscious sedan, the second generation got longer and wider than the W205 C-Class.

<span class="mw-page-title-main">Mercedes-Benz GLB</span> German small SUV (from 2019)

The Mercedes-Benz GLB is a crossover SUV produced by Mercedes-Benz. It was unveiled by the German manufacturer Daimler AG on 10 June 2019 in Park City, Utah. It was previously unveiled as a concept car to the public at the Shanghai Auto Show in April 2019.

<span class="mw-page-title-main">Mercedes-Benz C-Class (W205)</span> German mid-size car (from 2013)

The Mercedes-Benz W205 is the fourth generation of the Mercedes-Benz C-Class which was produced by Daimler AG between 2014 and 2021. The W205 C-Class was preceded by the W204 C-Class and superseded by the W206 C-Class. The fourth-generation C-Class was available in sedan (W205), station wagon/estate (S205), coupe (C205), cabriolet (A205) and long-wheelbase sedan (V205) body styles.

<span class="mw-page-title-main">Mercedes-Benz E-Class (W213)</span> German large car (2016–2023)

The W213 Mercedes-Benz E-Class is the fifth-generation of the Mercedes-Benz E-Class. Sold from 2016, it is the successor to the W212/S212 E-Class models. The coupe/convertible models share the same platform as the sedan/wagon, in contrast to the previous generation. The high-performance Mercedes-AMG E 63 and E 63 S versions of the W213 have been available as well from 2016, and these are the only versions with V8 engines.

<span class="mw-page-title-main">Mercedes-Benz M176/M177/M178 engine</span> Reciprocating internal combustion engine

The M176/M177/M178 is a petrol V8 engine range designed by Mercedes-AMG, replacing the M278 and M157 engines, and is based on the M133 engine.

<span class="mw-page-title-main">Mercedes-AMG GT 4-Door Coupé</span> Motor vehicle

The Mercedes-AMG GT 4-Door Coupé is an executive car (E-segment) introduced in 2018 by Mercedes-AMG. It is marketed as a five-door variant of the AMG GT two-door sports car. Despite the name and style, the GT 4-Door Coupé is closely related to E63 wagon with its performance chassis, and is featured by the AMG-specific rear frame and a different front axle for better kinematics.

<span class="mw-page-title-main">Mercedes-Benz A-Class (W177)</span> German small car (from 2018)

The Mercedes-Benz A-Class(W177) is the fourth and current generation of the A-Class range of subcompact executive hatchbacks and sedans. It was launched in 2018 as the successor to the W176 A-Class, with sales commencing in March 2018. The available body styles include:

<span class="mw-page-title-main">Mercedes-Benz M256 engine</span> Reciprocating internal combustion engine

The Mercedes-Benz M256 engine is a turbocharged straight-six engine produced since 2017, when it was first introduced on the W222 S450. It replaces the previous M276 V6 engine, and is Mercedes' first straight-six engine since the M104 engine.

<span class="mw-page-title-main">Mercedes-Benz M260/M264 engine</span> Reciprocating internal combustion engine

The M260 and M264 are turbocharged inline-four engines produced by Mercedes-Benz since 2017. It is the successor to the M270 and M274 engine.

<span class="mw-page-title-main">Mercedes-Benz M133 engine</span> Reciprocating internal combustion engine

The M133 is a turbocharged inline-four engine produced by Mercedes-Benz. Since its debut in 2013, it has been awarded International Engine of the Year three times in the "Best New Engine" and "1.8-litre to 2-litre" categories.

<span class="mw-page-title-main">Mercedes-Benz C-Class (W206)</span> Motor vehicle

The Mercedes-Benz W206 is the fifth generation of the Mercedes-Benz C-Class which is produced by Mercedes-Benz Group AG since 2021. It replaces the W205 C-Class which has been produced since 2014. The fifth-generation C-Class is available in sedan (W206), station wagon/estate (S206), and long-wheelbase sedan (V206) body styles. The W206 C-Class is based on the Mercedes MRA II rear-wheel drive modular platform also used by the W223 S-Class.

References

  1. Patrick George (7 June 2019). "Good Gravy: AMG Is Getting 416 Horsepower Out of Just a 2.0-Liter Turbo Four". Jalopnik.
  2. Bob Sorokanich (7 June 2019). "How Mercedes-AMG Made the Most Powerful Production Four-Cylinder Ever". Road & Track.
  3. "Mercedes-AMG's New 2.0 Inline-Four Develops 415bhp, Revs to 7200rpm".
  4. "The world's most powerful four-cylinder engine in series production, made in Affalterbach". Mercedes-Benz USA. 6 June 2019.
  5. "Nerd's Eye View: Mercedes AMG M139 Engine with E-turbo and Liquid Immersion Battery Cooling". MotoIQ. 11 April 2021.