Mercedes-Benz M133 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.[1]

Mercedes-Benz M133
Overview
ManufacturerMercedes-Benz
Production2013–present
Layout
ConfigurationInline-four engine
Displacement2.0 L (1,991 cc)
Cylinder bore83 mm (3.27 in)
Piston stroke92 mm (3.62 in)
Block materialAluminium alloy
Head materialAluminium alloy
ValvetrainDOHC
Compression ratio8.6:1
Combustion
TurbochargerSingle twin-scroll
Fuel systemDirect injection
Fuel typeGasoline
Output
Power output265–280 kW (360–381 PS; 355–375 hp)
Torque output450–475 N⋅m (332–350 lb⋅ft)
Dimensions
Dry weight147.8 kg (326 lb)
Chronology
PredecessorMercedes-Benz OM642 engine
SuccessorMercedes-Benz M139 engine

Design

The M133 is based on the M270 engine but has been extensively revised by AMG.[2] It features a twin-scroll turbocharger, BlueDIRECT direct injection, iron-carbon alloy on the cylinder walls to reduce friction, and zircon in the cylinder heads to increase thermal conductivity.[3] The cooling system is also based on the one found in the Mercedes-Benz SLS AMG.[4] The M133 was updated in 2015, and features performance improvements of 15 kW (20 PS; 20 hp) and 25 N⋅m (18 lb⋅ft).[5]

Models
Engine Power Torque Years
M133 DE20 LA 265 kW (360 PS; 355 hp)
at 6,000 rpm		 450 N⋅m (332 lb⋅ft)
at 2,250–5,000 rpm		 2013–2015
280 kW (381 PS; 375 hp)
at 6,000 rpm		 475 N⋅m (350 lb⋅ft)
at 2,250–5,000 rpm		 2015–2018

M133 DE20 LA (265 kW version)

M133 DE20 LA (280 kW version)
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References
  1. "Mercedes-AMG 2-liter turbo wins third Engine of the Year Award - MercedesBlog". MercedesBlog. 2016-06-01. Retrieved 2018-07-03.
  2. Radu, Mihnea (2013-03-24). "M133 – The First Four-Cylinder Turbo Mercedes-AMG Engine Explained". autoevolution. Retrieved 2018-07-03.
  3. "The New 2.0-l High-Performance Four-Cylinder Engine from Mercedes-AMG - PDF Free Download". slideheaven.com. Retrieved 2018-07-03.
  4. "Mercedes A 45 AMG: The most powerful 4-cylinder turbo engine in the world". www.car-engineer.com. Retrieved 2018-07-03.
  5. "Next Mercedes-AMG A45 to outgun rivals with 300+kW". www.motoring.com.au. Retrieved 2018-07-03.
  6. George, Patrick. "2014 Mercedes-Benz CLA45 AMG: The Jalopnik Review". Jalopnik. Retrieved 2018-07-03.
  7. "Mercedes-Benz A45 AMG 2.0 turbo good for crazy 185 HP per liter". Autoblog. Retrieved 2018-07-03.
  8. "2015 Mercedes-Benz GLA45 AMG". Car and Driver. Retrieved 2018-07-03.
  9. "Mercedes-AMG CLA45 4Matic Reviews | Mercedes-AMG CLA45 4Matic Price, Photos, and Specs | Car and Driver". Car and Driver. Retrieved 2018-07-03.
  10. "Mercedes-A45 AMG replacement set to breach 400bhp". Evo. Retrieved 2018-07-03.
  11. "Mercedes-AMG to launch new entry A 45, CLA 45 and GLA 45 models | Autocar". www.autocar.co.uk. Retrieved 2018-07-03.
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