Mercedes-Benz M281 engine
The M281 is a straight-three petrol engine produced by Mercedes-Benz since 2014.
| Mercedes-Benz M281 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Mercedes-Benz |
| Also called | Renault H4D Renault H4B Nissan BR |
| Production | 2014– |
| 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 material | Aluminium 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 |
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
- 2014–present C453/A453 Smart Fortwo
- 2014–present W453 Smart Forfour
M281 E10 (Nissan HR10DE)
- 2014–present C453/A453 Smart Fortwo
- 2014–present W453 Smart Forfour
- 2014–present Renault Twingo III
- 2017–present Dacia Sandero II 1.0 SCe
- 2017–present Dacia Logan II 1.0 SCe
- 2017–present K14 Nissan Micra 1.0
M281 E09 LA (Nissan HR09DE/Renault H4Bt)
- 2014–present C453/A453 Smart Fortwo
- 2014–present W453 Smart Forfour
- 2014–present Renault Twingo III
- 2014–present Dacia Sandero II 0.9 TCe
- 2014–present Dacia Logan II 0.9 TCe
- 2017–present K14 Nissan Micra 1.0
References
- "M281 - OE-Teile-Shop Austria". oe-autoteile-shop.com. Retrieved 2018-07-03.
- "Introduction of the New smart Model Series 453 smartfortwo coupé/smart forfour" (PDF). www.evilution.co.uk. Retrieved 2018-07-03.
- "SMART 453 Series Introduction Into Service Manual (Page 45 of 122)". www.manualslib.com. Retrieved 2018-07-03.
- "Renault, Nissan and Daimler sign up for green car-share deal". The Independent. Retrieved 2018-07-03.
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