BMW N43 straight-4 Petrol Engine
From 2007 to 2011
The BMW N43 is a straight-4 naturally aspirated gasoline engine DOHC engine which was sold from 2007-2011. It replaced the N46 (and related N45), however the N43 was not sold in countries with high sulfur fuel, therefore the N45/N46 engines remained in production alongside the N43.
The BMW N43 with four cylinders in a row . The light alloy engine has two overhead camshafts and 16 valves. He has a spray- guided gasoline direct injection , which operates in the partial load range in lean operation. So could the 116i compared to the previous engine N45 a performance increase of six percent while reducing fuel consumption by 23% can be achieved. Since low-sulfur gasoline for the lean operation is needed, the N43 in many markets could not be offered. In these markets, the predecessor engines were therefore N45 and N46 available in modified form.
The N46B20 is identical to the N43B20 in many parts, such. B. the crankshaft or the oil pan. As of 2011, the N43 was the N13 replaced.
The N43 replaced the technically similar, but without direct injection operating BMW N42 engine, which was used from 2001 to 2004. In addition, the N43 was equipped with start-stop system and brake energy recovery (see also BMW EfficientDynamics ).
Compared with its N46 predecessor, the N43 features direct injection.
In 2011, as part of BMW's shift to turbocharging, the N43 was replaced by the turbocharged N13.
Engine Models
| Engine | Displacement | Power | Torque | Year |
|---|---|---|---|---|
| N43B16 | 1,599 cc | 90 kW (121 hp) @ 6000 rpm | 160 N·m (118 lb·ft) @ 4250 rpm | 2008-2011 |
| N43B20 | 1,995 cc | 90 kW (121 hp) @ 6000 rpm | 185 N·m (136 lb·ft) @ 3000 rpm | 2007-2011 |
| 110 kW (148 hp) @ 6000 rpm | 190 N·m (140 lb·ft) @ 4500 rpm | |||
| 127 kW (170 hp) @ 6700 rpm | 210 N·m (155 lb·ft) @ 4250 rpm |
N43B16
| engine type | capacity | Bore × stroke | Power at 1 / min | Torque at 1 / min | construction time |
|---|---|---|---|---|---|
| N43B16 | 1.6 L (1597 cm 3 ) | 82 mm × 75.6 mm | 90 kW (122 hp) at 6000 | 160 Nm at 4250 | 03 / 2007-10 / 2013 |
The N43B16 has a 1,599 cc (98 cu in) displacement and produces 90 kW (121 hp) and 160 N·m (118 lb·ft). It is the successor to the N45 engine and, as per the N45, does not have valvetronic.
BMW 1 series E87 116i Performance
| Engine Size | 1599cc |
|---|---|
| Cylinders | 4 |
| Valves | 16 |
| Fuel Type | Petrol |
| Power | 120 bhp |
|---|---|
| Top Speed | 127 mph |
| 0-60 mph | 9.9 secs |
| Torque | 160 Nm, 118 ft-lb |
| CO2 Emissions | 139 g/km |
| Euro Emissions Standard | 4 |
| Miles Per Tank | 559 miles |
Applications:
- 2007-2009 E87 116i
- 2008 E90 316i
N43B20
| engine type | capacity | Bore × stroke | Power at 1 / min | Torque at 1 / min | construction time |
|---|---|---|---|---|---|
| N43B20 | 2.0 L (1995 cm 3 ) | 84 mm × 90 mm | 90 kW (122 hp) at 6000 | 185 Nm at 3000 | 03 / 2009-10 / 2013 |
| 105 kW (143 hp) at 6000 | 190 Nm at 4500 | 03 / 2007-09 / 2007 | |||
| 190 Nm at 4250 | 09 / 2007-10 / 2013 | ||||
| 125 kW (170 hp) at 6700 | 210 Nm at 4250 | 03 / 2007-10 / 2013 |
The N43B20 has a 1995 cc displacement and produces up to 127 kW (173 PS; 170 hp) and 210 Nm.
In 2009, the 2.0 litre N43B20 replaced the 1.6 litre N43B16 in the 116i. Power remained at 90 kW (121 hp), however torque was increased. It is suggested that this 90 kW version might not have valvetronic.
BMW 3 series E92 Performance
| Engine Size | 1995cc |
|---|---|
| Cylinders | 4 |
| Valves | 16 |
| Fuel Type | Petrol |
| Power | 167 bhp |
|---|---|
| Top Speed | 143 mph |
| 0-60 mph | 7.8 secs |
| Torque | 210 Nm, 155 ft-lb |
| CO2 Emissions | 154 g/km |
| Euro Emissions Standard | 5 |
| Miles Per Tank | 582 miles |
Applications:
90 kW (121 hp) and 185 N·m (136 lb·ft) version
- 2009-2011 E81/E87 116i
110 kW (148 hp) and 190 N·m (140 lb·ft) version
- 2007-2011 E90/E91/E92/E93 318i
- 2008-2011 E81/E87/E88 118i
127 kW (170 hp) and 210 N·m (155 lb·ft) version
- 2007-2011 E81/E82/E87/E88 120i
- 2007-2011 E90/E91/E92/E93 320i
- 2007-2009 E60/E61 520i
- since 03/2007 E81 / E87 as 120i
- since 09/2009 E82 as a 120i Coupe
- since 03/2008 E88 as 120i Cabriolet
- since 09/2007 E90 / E91 as 320i
- since 09/2007 E92 320i Coupe
- since 09/2007 E93 320i Convertible
- since 03/2007 E60 as 520i
