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

Mercedes-Benz M281
Overview
ManufacturerMercedes-Benz
Also calledRenault H4D
Renault H4B
Nissan BR
Production2014–
Layout
ConfigurationStraight-three engine
Displacement1.0 L (999 cc)
0.9 L (898 cc) (M281 E09 LA)
Cylinder bore72.2 mm
Piston stroke81.3 mm
73.1 mm (M281 E09 LA)
Block materialAluminium alloy
Head materialAluminium alloy
ValvetrainDOHC
Compression ratio10.5:1
9.5:1 (M281 E09 LA)
Combustion
TurbochargerSingle-turbo (M281 E09 LA)
Fuel systemMulti-point injection
Fuel typePetrol

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


Engine Displacement Power Torque Years
M281 E10 R 999 cc (61 cu in) 45 kW (60 hp)
at 6,000 rpm
87 N⋅m (64 lb⋅ft)
at 3,500 rpm
2014–
M281 E10 52 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)



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.

На других языках


- [en] Mercedes-Benz M281 engine

[it] Mercedes-Benz M281

Il Mercedes-Benz M281 è un motore a scoppio alimentato a benzina prodotto a partire dal 2014 dalla casa automobilistica tedesca Mercedes-Benz per la Smart.



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