Mercedes-Benz M281 engine

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Mercedes-Benz M281
2016 Renault Twingo III SCe 70 - engine.jpg
Overview
Manufacturer Mercedes-Benz
Also called Renault H4D
Renault H4B
Nissan BR
Production2014–
Layout
Configuration Straight-three engine
Displacement 1.0 L (999 cc)
0.9 L (898 cc) (M281 E09 LA)
Cylinder bore 72.2 mm
Piston stroke 81.3 mm
73.1 mm (M281 E09 LA)
Block material Aluminium alloy
Head materialAluminium alloy
Valvetrain DOHC
Compression ratio 10.5:1
9.5:1 (M281 E09 LA)
Combustion
Turbocharger Single-turbo (M281 E09 LA)
Fuel system Multi-point injection
Fuel type Petrol

The M281 is a straight-three petrol engine produced by Mercedes-Benz since 2014.

Contents

Design

The M281 uses an aluminium alloy cylinder block and head, and features a dual overhead camshaft with 4 valves per cylinder. [1] It is transversely mounted and is available in three configurations: naturally aspirated with 45 kW (60 hp) or 53 kW (71 hp), or as a turbocharged 66 kW (89 hp) version. [2] [3] These engines are used in Smart, Renault, Nissan, and Dacia models due to Daimler A.G.'s involvement in the Renault–Nissan–Mitsubishi Alliance since 2010. [4]

Models

EngineDisplacementPowerTorqueYears
M281 E10 R999 cc (61 cu in)45 kW (60 hp)
at 6,000 rpm
87 N⋅m (64 lb⋅ft)
at 3,500 rpm
2014–
M281 E1052 kW (70 hp)
at 6,000 rpm
91 N⋅m (67 lb⋅ft)
at 2,850 rpm
M281 E09 LA
turbocharged
898 cc (55 cu in)66 kW (89 hp)
at 5,500 rpm
135 N⋅m (100 lb⋅ft)
at 2,500 rpm

M281 E10 R

M281 E10 (Nissan HR10DE/Renault H4D)

M281 E09 LA (Nissan HR09DET/Renault H4Bt)

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References

  1. "M281 - OE-Teile-Shop Austria". oe-autoteile-shop.com. Retrieved 2018-07-03.
  2. "Introduction of the New smart Model Series 453 smartfortwo coupé/smart forfour" (PDF). www.evilution.co.uk. Retrieved 2018-07-03.
  3. "SMART 453 Series Introduction Into Service Manual (Page 45 of 122)". www.manualslib.com. Retrieved 2018-07-03.
  4. "Renault, Nissan and Daimler sign up for green car-share deal" . The Independent. Archived from the original on 2022-05-12. Retrieved 2018-07-03.