BMW N47
Encyclopedia
BMW N47 is BMW's latest four-cylinder common rail diesel engine, with many improvements over its predecessor, the BMW M47.
Having made its debut in the face lifted BMW E87 and the E81 which were both introduced in March 2007, it was also offered from the outset in the BMW E82 and E88, which were introduced later in the same year. The engine also became available in the BMW E60-E61 from September 2007, several months after the E60-E61 were face lifted, during which time the older M47
remained available.
It then followed in October 2007 into the 2008 model year BMW E90
/E91/E92/E93, at which time the entire 3 series range gained the company's Efficient Dynamics. Not long after it became available in the BMW E83
X3, and since then it has found its way into the
BMW E84 X1. Rumors suggested that this engine will make its way into the E89, as a rival to Audi's TT TDI.
The N47 comes as a 1995 cc unit, identical in capacity to the BMW M47
TU/TU2 series.
The 115 bhp tune is for the entry level E81 and E87 116d, as well as the entry level E90 316d, the 143 bhp model sees service in the E81, E87 and E88 118d, E90 and E91 318d, not forgetting the E84 X1 sDrive18d and xDrive18d, and also the BMW E83
X3 xDrive18d.
Introduced in September 2009 for the 2010 model year is a new 163 bhp/265 lb ft (360 N m) derivative in the new E90 BMW 320d Efficient Dynamics, with exceptionally low CO2 emissions of only 109 g/km. This exceptionally low amount of CO2 is matched by extremely low fuel consumption of 68.9 mpg, lower than the Second Generation Toyota Prius despite offering superior performance: 0–100 km/h in 8.2 seconds and a top speed of 225 km/h (140 mph).
The "standard" x20d model has 14 extra bhp, at 177 bhp but 7 lb ft of torque less at 258 lb ft(350 N m). This is found in the E81/E82/E87/E88 120d, E90/E91/E92/E93 320d, recently retired E60 and E61 520d, E84 X1 sDrive20d, X1 xDrive20d and E83 X3 xDrive20d.
In Europe, this particular version is one of the most popular engines in the entire range; the best selling 3 series is the 320d, while the 520d is the UK's best selling 5 series. Needless to say, it is also the de facto choice for X3 buyers in Europe.
In October 2007, BMW introduced another derivative of the N47D20, the twin sequential turbo model. With 204 bhp, it is the first production diesel on sale to achieve a specific output of over 100 bhp per liter. It uses the same turbo technology first shown in the E60 535d. It is also more powerful than the E90-E91-E92-E93 325d, which has 197 bhp in spite of having a 3.0 liter straight six engine. This engine is on sale in the E81/E82/E87/E88 123d and the E84 X1 xDrive 23d. This engine, which won the International Engine of the Year
Award 2010, is effectively the top model for these ranges in certain markets: in the UK and Ireland the X1 is only available with diesel power, so the company's straight 6 is not offered at all in these markets. In these countries, only the E81 1 Series Coupé and E88 1 Series Cabriolet are available with BMW's famous straight 6; the E82 3-door hatchback and the E87 5 door hatchback only have four-cylinder engines and this is the most potent 4-cylinder engine BMW makes.
Interestingly, BMW has held onto their straight 6 for the new F10/F11 525d, despite many reports to the contrary saying that the E60 525d would be replaced with a 523d featuring the N47 4-cylinder engine; although it develops 204 bhp, identical to the engine in the 123d, it develops 332 lb ft(450 N m) of torque as opposed to the 295 lb ft(400 N m) of torque that the 4-cylinder engine features.
It is not yet known whether the new F10/F11 520d, featuring 184 bhp and 280 lb ft(380 N m) is going to be designated N47 or N47TU.
Having made its debut in the face lifted BMW E87 and the E81 which were both introduced in March 2007, it was also offered from the outset in the BMW E82 and E88, which were introduced later in the same year. The engine also became available in the BMW E60-E61 from September 2007, several months after the E60-E61 were face lifted, during which time the older M47
BMW M47
The BMW M47 is a diesel straight-4 engine produced from 1998 through 2007, using at the beginning of its life high-pressure injection system over the Common Rail Applications:* 1999-2004 Rover 75 CDT* 2004-2005 Rover 75 CDTi...
remained available.
It then followed in October 2007 into the 2008 model year BMW E90
BMW E90
The saloon model was the first model sold of the 5th generation BMW 3 series. Debuting in the US in 2006, the E90 came in two trims, the 325i/xi and 330i/xi models...
/E91/E92/E93, at which time the entire 3 series range gained the company's Efficient Dynamics. Not long after it became available in the BMW E83
BMW E83
The first generation BMW X3 is a compact crossover SUV of the German automaker BMW. Marketed below the E53 and later E70, the X3 was presented at the IAA 2003 and is since January 2004 on the market.-Engines:...
X3, and since then it has found its way into the
BMW E84 X1. Rumors suggested that this engine will make its way into the E89, as a rival to Audi's TT TDI.
The N47 comes as a 1995 cc unit, identical in capacity to the BMW M47
BMW M47
The BMW M47 is a diesel straight-4 engine produced from 1998 through 2007, using at the beginning of its life high-pressure injection system over the Common Rail Applications:* 1999-2004 Rover 75 CDT* 2004-2005 Rover 75 CDTi...
TU/TU2 series.
| Engine | Displacement | Minimum specific fuel consumption(g/kWh) | Compression Ratio | Engine Weight(kg) | Power | Torque | Redline(rpm) | Injection Pressure(bar) | Relative Boost(bar) | MEP Mean effective pressure The mean effective pressure is a quantity related to the operation of an reciprocating engine and is a valuable measure of an engine's capacity to do work that is independent of engine displacement. When quoted as an indicated mean effective pressure or imep , it may be thought of as the average... (bar) | Maximum combustion chamber pressure(bar) | Introduced in |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N47D20 | 2.0 L (1995 cc/121 in³) | 198 | 16.1:1 | 149 | 85 kW (116 bhp) @ 4000 rpm | 260 N m (192 lb ft) @ 1750 rpm | 09/2009 | |||||
| 105 kW (143 bhp) @ 4000 rpm | 300 N m (221 lb ft) @ 1750-3000 rpm | 5000 | 1600 | 1.5 | 19 | 170 | 03/2007 | |||||
| 120 kW (163 bhp) @ 3500-4200 rpm | 360 N m (265 lb ft) @ 1750-3200 rpm | 09/2009 | ||||||||||
| 130 kW (177 bhp) @ 4000 rpm | 350 N·m (258 lb ft) @ 1750-3000 rpm | 5000 | 1800 | 1.5 | 22 | 180 | 03/2007 | |||||
| 204 | 161 | 150 kW (204 bhp) @ 4400 rpm | 400 Nm (295 lb ft) @ 2000 rpm | 5200 | 2000 | 2.0 | 25.3 | 200 | 10/2007 |
The 115 bhp tune is for the entry level E81 and E87 116d, as well as the entry level E90 316d, the 143 bhp model sees service in the E81, E87 and E88 118d, E90 and E91 318d, not forgetting the E84 X1 sDrive18d and xDrive18d, and also the BMW E83
BMW E83
The first generation BMW X3 is a compact crossover SUV of the German automaker BMW. Marketed below the E53 and later E70, the X3 was presented at the IAA 2003 and is since January 2004 on the market.-Engines:...
X3 xDrive18d.
Introduced in September 2009 for the 2010 model year is a new 163 bhp/265 lb ft (360 N m) derivative in the new E90 BMW 320d Efficient Dynamics, with exceptionally low CO2 emissions of only 109 g/km. This exceptionally low amount of CO2 is matched by extremely low fuel consumption of 68.9 mpg, lower than the Second Generation Toyota Prius despite offering superior performance: 0–100 km/h in 8.2 seconds and a top speed of 225 km/h (140 mph).
The "standard" x20d model has 14 extra bhp, at 177 bhp but 7 lb ft of torque less at 258 lb ft(350 N m). This is found in the E81/E82/E87/E88 120d, E90/E91/E92/E93 320d, recently retired E60 and E61 520d, E84 X1 sDrive20d, X1 xDrive20d and E83 X3 xDrive20d.
In Europe, this particular version is one of the most popular engines in the entire range; the best selling 3 series is the 320d, while the 520d is the UK's best selling 5 series. Needless to say, it is also the de facto choice for X3 buyers in Europe.
In October 2007, BMW introduced another derivative of the N47D20, the twin sequential turbo model. With 204 bhp, it is the first production diesel on sale to achieve a specific output of over 100 bhp per liter. It uses the same turbo technology first shown in the E60 535d. It is also more powerful than the E90-E91-E92-E93 325d, which has 197 bhp in spite of having a 3.0 liter straight six engine. This engine is on sale in the E81/E82/E87/E88 123d and the E84 X1 xDrive 23d. This engine, which won the International Engine of the Year
International Engine of the Year
The International Engine of the Year is an annual competition for automotive industry internal combustion engines, judged by a panel of automobile journalists from around the world. It is organised by the United Kingdom's largest technical motoring, aerospace and traffic management publication...
Award 2010, is effectively the top model for these ranges in certain markets: in the UK and Ireland the X1 is only available with diesel power, so the company's straight 6 is not offered at all in these markets. In these countries, only the E81 1 Series Coupé and E88 1 Series Cabriolet are available with BMW's famous straight 6; the E82 3-door hatchback and the E87 5 door hatchback only have four-cylinder engines and this is the most potent 4-cylinder engine BMW makes.
Interestingly, BMW has held onto their straight 6 for the new F10/F11 525d, despite many reports to the contrary saying that the E60 525d would be replaced with a 523d featuring the N47 4-cylinder engine; although it develops 204 bhp, identical to the engine in the 123d, it develops 332 lb ft(450 N m) of torque as opposed to the 295 lb ft(400 N m) of torque that the 4-cylinder engine features.
It is not yet known whether the new F10/F11 520d, featuring 184 bhp and 280 lb ft(380 N m) is going to be designated N47 or N47TU.