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BMW 5 Series, BMW, Diesel, Fuel Efficiency (MPG), Sedan
#1 of 59 BMW 535d: the future of Diesel is already there
Aug 01, 2004 (11:54 pm)
While the USA is barely introduced to current modern generation Diesels (PD 2.0l TDI in the VW Passat and 5.0l V10 TDI in the Touareg, CR in the Merc E320 CDI), Diesel power has made a new leap in the form of the newly introduced BMW 535d. And what a leap.
First a side note to say that this engine is equipped with a particulate filter from the ground up, and it obeys Euro 4 emission standards already. But that's merely the point here...
The meat is that: the basis from the engine is the class leading, inline 6, 3.0l turbodiesel engine that already propels with ease the 330d and X3 3.0d (204hp) on one side and the 530d, 730d and X5 3.0d (218 hp) on the other. But in the new 535d, this engine has been fitted with dual stage turbocharging: a small turbo for low revs, a big one for high revs. Absolute pressure is up from 2.3 bars in 218 hp guise to 2.85 bars here. Compression ratio has been lowered from 17:1 to 16.5:1. This system has permitted to drop variable vane turbochargers entirely.
And it's not quite new, since this engine has been used notably in the X5 that raced at the Paris Dakar and ended up 3rd. But it's the first time it's used in a production car.
Results : max torque 560 Nm at 2000 rpm (500 of which is already available at 1200 rpm, 530 at 1500), peak power 200 kW (272 hp) at 4400 rpm. We're speaking 91 hp per litre here, that's the world record of specific power for a turbocharged Diesel powerplant. 560 Nm is roughly 413 lbft.
According to BMW, this propels the porky, 1700 kg 5 series from 0 to 60 in 6.5 seconds. Better still, the kilometer from a standstill is said to be achieved in 25'9! To give you an idea of how fast this is, consider the fact that the current 330d has been measured in 28'2, the current 530d in 28'5, the Boxster S doesn't do any better, while my current car (Opel Speedster Turbo), praised for its performance, just does 0'9 better in 25 seconds flat!
All this while boasting, always according to the manufacturer, a combined Euro cycle in the high 30s...
Aug 02, 2004 (2:46 am)
Sounds very impressive!
#3 of 59 Re: BMW 535d: the future of Diesel is already there [idletask]
Aug 02, 2004 (6:17 am)
272 hp divided by 3.5 L equals 77.7 hp per litre. This is still an impressive figure, but not 91 hp per litre as you stated.
#4 of 59 Re: BMW 535d: the future of Diesel is already there [carman123]
Aug 02, 2004 (6:19 am)
> 272 hp divided by 3.5 L equals 77.7 hp per litre. This is still an impressive figure, but not 91 hp per litre as you stated
You read it incorrectly! The engine still displaces 3.0 liters!
#5 of 59 OK, I'll state it again, it was unclear
Aug 02, 2004 (6:30 am)
The engine in the 535d STILL displaces 3.0 liters, so yes, that's a specific output of 91 hp per liter.
And it's not the first application of this technology either, since Opel took the 1.9l Multijet Fiat turbodiesel engine and also fitted it with dual stage turbocharging, resulting in a max torque of 400 Nm from 1500 rpm on and a peak power of 210 hp, so that's more than 100 hp per litre, and more than 200 Nm per litre. That's the engine in the prototype Vectra OPC which was at the Paris motorshow among others.
But unlike the craftmanship by OPC (Opel Performance Center), BMW has made this technology to the public, and had previous experience with it in rallye raid, no less. At least in Europe. I guess they're just waiting to see how the E320 CDI will fare in the US market before they decide on importing this blaster of an engine to your shores.
#6 of 59 Re: OK, I'll state it again, it was unclear [idletask]
Aug 02, 2004 (11:15 am)
Sorry. I did read it incorrectly.
272 hp is an incredible output for a 3 litre diesel engine. With all that torque and the good fuel economy, I hope this engine is available in the USA when the low sulfur content fuel is.
Aug 02, 2004 (9:48 pm)
I think that is other half of the reason why BMW is waiting, better diesel fuel in the U.S.
If diesels catch on again, BMW, VW, Audi, Mercedes will be ready to offer one in every segment they have cars in now. Can you imagine it?
Mercedes, BMW and Audi alone have at least 1 and in many cases 2 diesel versions of every sedan they sell, usually a 6 and a V8.
There is a E400 CDI in Europe that could be priced at the same as the E500, would be a hit I think.
Picture it, MBUSA headquarters Summer 2006:
A commercial is drafted with not a string around your finger but a rope around your ankle....the new Mercedes diesels:
....the C270, E320, E400, ML320, ML400, S320, S400 CDI models all coming down a a very wide street or a desert with white paper over their tailpipes.....
BMW's ad is all to easy to predict:
"The Ultimate Alternative Power Driving Machine".
#8 of 59 BTW I spotted an error in Edmunds' E320 CDI first drive
Aug 02, 2004 (10:07 pm)
The first Common Rail Diesel engine was NOT unveiled by Mercedes, but Alfa Romeo in the 156.
In fact, Mercedes was, quite on the opposite, a big believer in prechamber Diesels of old, only the market and results of CR Diesels on other cars had them go the CR way.
Completely unrelated, but despite its constant progress too, the PD technology just hasn't had such a success. Only VW and Land Rover use it, and that's pretty much all... That's probably because unlike the CR, PD is manufactured by one and only OEM, Bosch.
#9 of 59 535 engine
Aug 09, 2004 (11:53 am)
Good information but does anyone know if the 535 or the 530 are going to make it to the us? And when? MB already introduced their diesel for the E 320.
Aug 10, 2004 (5:06 am)
idletask, you should submit that as an error to our editorial staff (using the help link near the top). They would be glad to correct the information!