BMW M47
Encyclopedia
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 (CR)
Applications:
Applications:
This updated engine was expanded slightly to 1995 cc, it finally introduced COMMON-RAIL technology similar to an M57 engine ramping up the torque and improved consumption and more boost lower down the rev range, however it added 50 kg in extra weight and emissions were raised slightly. In the UK, the new engine lifted the 320d into the next highest insurance bracket and next highest band for Vehicle Excise Duty (commonly known as Road Tax).
The M47TU was also fitted with twin balancer shafts to counteract the secondary balances inherent in a diesel four-cylinder engine. The M47TU was regarded as so good that BMW made it available in the 320Cd Coupé.
Although an extremely well accomplished piece of engineering, the M47TUD20 was not without flaws. A number of common failure points have been highlighted in the engines produced prior to the introduction of the M47TU2D20, chief among which is 'swirl flap' mechanism employed within the inlet manifold. These consist of a number of butterfly valves within each individual inlet tract. These flaps are secured to an actuating rod via two small screws. It has become clear that over time these screws can come loose via vibration etc. When this happens they can end up being drawn into the respective cylinder, causing significant damage to piston, cylinder head and valves. If unlucky further damage can be caused to the turbo if the screw then makes its way through the exhaust valve into the manifold and subsequently into the turbo. These failures have occurred in such quantity that a number of specialist BMW magazines have featured articles on the problem including information on how to remove the swirl flaps http://www.pmwltd.co.uk/swirl_flaps.pdf. For those who wish to perform some preventive maintenance on the M47TUD20 engine, there are companies who supply and/or fit blanking plugs to allow the removal of these swirl flaps altogether http://www.pmwltd.co.uk/. Subsequent revisions of this engine involved the replacement of the mechanical method of securing these flaps by a one-piece moulded plastic flap that so far appears to have eliminated the problem.
Applications:
Applications:
BMW
Bayerische Motoren Werke AG is a German automobile, motorcycle and engine manufacturing company founded in 1916. It also owns and produces the Mini marque, and is the parent company of Rolls-Royce Motor Cars. BMW produces motorcycles under BMW Motorrad and Husqvarna brands...
M47 is a diesel
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...
straight-4
Straight-4
The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....
engine produced from 1998 through 2007, using at the beginning of its life high-pressure injection system over the Common Rail (CR)
| Engine | Displacement | Power | Torque | Redline | Year |
|---|---|---|---|---|---|
| M47D20 | 2.0 L (1951 cc/119 in³) | 100 kW (134 hp) @ 4000 | 280 N·m (207 ft·lbf) @ 1750 | 4750 | 1998 |
| 85 kW (114 hp) @ 4000 | 265 N·m (195 ft·lbf) @ 1750 | 2001 | |||
| M47TUD20 | 2.0 L (1995 cc/121 in³) | 85 kW (114 hp) @ 4000 | 280 N·m (207 ft·lbf) @ 1750 | 2003 | |
| 110 kW (148 hp) @ 4000 | 330 N·m (243 ft·lbf) @ 2000-2500 | 4600 | 2001 | ||
| M47TU2D20 | 90 kW (121 hp) @ 4000 | 280 N·m (207 ft·lbf) @ 2000 | 2004 | ||
| 90 kW (121 hp) @ 4000 | 280 N·m (207 ft·lbf) @ 1750-2000 | 2005 | |||
| 120 kW (161 hp) @ 4000 | 340 N·m (251 ft·lbf) @ 2000-2750 | 2004 |
Applications:
- 1999-2004 Rover 75 CDTRover 75The Rover 75 is an executive car produced initially by the Rover Group at Cowley, Oxfordshire, UK, and later by MG Rover at their Longbridge site in Birmingham, UK...
- 2004-2005 Rover 75 CDTiRover 75The Rover 75 is an executive car produced initially by the Rover Group at Cowley, Oxfordshire, UK, and later by MG Rover at their Longbridge site in Birmingham, UK...
- 2001-2006 Land Rover FreelanderLand Rover FreelanderThe Land Rover Freelander is a compact crossover SUV made by Land Rover.The current generation is sold as the LR2 in North America and as the Freelander 2 in Europe...
M47D20
The original M47 engine was the 1951 cc M47D20. Bowing in 1998, it produced 100 kW (134 hp) and 280 N·m (207 ft·lbf) in its original 320d/520d guise and 85 kW (114 hp) and 265 N·m (195 ft·lbf) in the 318d.Applications:
- 85 kW (114 hp) and 265 N·m (195 ft·lbf)
- 2001-2003 E46BMW E46The BMW E46 is the fourth generation of the 3 Series compact executive cars produced by BMW, produced from 1998 when it succeeded the BMW E36 until it was replaced by the BMW E90 in 2005....
318d
- 2001-2003 E46
- 100 kW (134 hp) and 280 N·m (207 ft·lbf)
- 1999-2001 E46BMW E46The BMW E46 is the fourth generation of the 3 Series compact executive cars produced by BMW, produced from 1998 when it succeeded the BMW E36 until it was replaced by the BMW E90 in 2005....
320d - 2000-2003 E39BMW E39The BMW E39 is the BMW 5 Series made between 1995 and 2003. The E39 was the successor of the BMW E34 in 1995, and itself was replaced by the E60 platform in 2003. Sales to Germany and the United Kingdom began in 1995, and by 1996 sales to the rest of the world had commenced. A mid-generational...
520d
- 1999-2001 E46
M47TUD20
BMW 320d models built from approximately September 2001 onwards were fitted with the M47TU (standing for "technical update"). The exact production week is not known but expect it to be after Production Week 33 of 2001 (e.g. one cannot rely on a UK 51 plate registered BMW 320d to have the M47TU).This updated engine was expanded slightly to 1995 cc, it finally introduced COMMON-RAIL technology similar to an M57 engine ramping up the torque and improved consumption and more boost lower down the rev range, however it added 50 kg in extra weight and emissions were raised slightly. In the UK, the new engine lifted the 320d into the next highest insurance bracket and next highest band for Vehicle Excise Duty (commonly known as Road Tax).
The M47TU was also fitted with twin balancer shafts to counteract the secondary balances inherent in a diesel four-cylinder engine. The M47TU was regarded as so good that BMW made it available in the 320Cd Coupé.
Although an extremely well accomplished piece of engineering, the M47TUD20 was not without flaws. A number of common failure points have been highlighted in the engines produced prior to the introduction of the M47TU2D20, chief among which is 'swirl flap' mechanism employed within the inlet manifold. These consist of a number of butterfly valves within each individual inlet tract. These flaps are secured to an actuating rod via two small screws. It has become clear that over time these screws can come loose via vibration etc. When this happens they can end up being drawn into the respective cylinder, causing significant damage to piston, cylinder head and valves. If unlucky further damage can be caused to the turbo if the screw then makes its way through the exhaust valve into the manifold and subsequently into the turbo. These failures have occurred in such quantity that a number of specialist BMW magazines have featured articles on the problem including information on how to remove the swirl flaps http://www.pmwltd.co.uk/swirl_flaps.pdf. For those who wish to perform some preventive maintenance on the M47TUD20 engine, there are companies who supply and/or fit blanking plugs to allow the removal of these swirl flaps altogether http://www.pmwltd.co.uk/. Subsequent revisions of this engine involved the replacement of the mechanical method of securing these flaps by a one-piece moulded plastic flap that so far appears to have eliminated the problem.
Applications:
- 85 kW (114 hp) and 280 N·m (207 ft·lbf)
- 2003-2005 E46BMW E46The BMW E46 is the fourth generation of the 3 Series compact executive cars produced by BMW, produced from 1998 when it succeeded the BMW E36 until it was replaced by the BMW E90 in 2005....
318d
- 2003-2005 E46
- 110 kW (148 hp) and 330 N·m (243 ft·lbf)
- 2001-2005 E46BMW E46The BMW E46 is the fourth generation of the 3 Series compact executive cars produced by BMW, produced from 1998 when it succeeded the BMW E36 until it was replaced by the BMW E90 in 2005....
320d - E83BMW E83The 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 2.0dBMW X3The BMW X3 is a compact crossover SUV marketed by the German automaker BMW, based on the BMW 3-Series automobile platform, and now in its second generation. BMW designed the X3 in conjunction with Magna Steyr of Graz, Austria — who manufactured all X3s under contract to BMW for the first...
(up to end of 2006)
- 2001-2005 E46
M47TU2D20
The engine was updated again in 2004 as the M47TU2D20. Still at 1995 cc, it produced more power across the range.Applications:
- 90 kW (121 hp) and 280 N·m (207 ft·lbf)
- E87 118d
- E90/E91BMW E90The 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...
318d
- 120 kW (161 hp) and 340 N·m (251 ft·lbf)
- E60/E61BMW E60The BMW E60 is the BMW 5 Series automobile, replacing the BMW E39 in 2003. It was replaced by the BMW F10 from March 2010. The E60 was available in both sedan and station wagon platforms....
520d - E87 120d
- E90/E91BMW E90The 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...
320d - E83BMW E83The 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 2.0dBMW X3The BMW X3 is a compact crossover SUV marketed by the German automaker BMW, based on the BMW 3-Series automobile platform, and now in its second generation. BMW designed the X3 in conjunction with Magna Steyr of Graz, Austria — who manufactured all X3s under contract to BMW for the first...
(end of 2006 onwards)
- E60/E61