[Mark]

BMW officially took the wraps off its first US market diesels since the mid-1980s today at the Detroit Auto Show. The 335d and exceedingly awkwardly named X5 xDrive35d are getting BMW's dual turbocharged 3.0L inline six diesel starting this fall. The 265-hp, 425-lb.ft. torque monster will make these vehicles among the most fuel-efficient and best performing vehicles in their class. They will also be among the cleanest being 50 state legal with particulate filters and a urea injection system that BMW is calling BluePerformance. So far no word on pricing, but based on the 535d that Autoblog.com drove recently, this should be a killer combination at any price.

[MTV]

The E90 is nice!

[BCoBaby]

thats the first time ive seen the e92 SP wheels on a e90.. it doesnt look bad but i like the 19'' sport wheels that come with the e90 SP better

[Nyulak]

Does the xDrive moniker for the X5 also mean it has the new torque vectoring AWD setup like the X6?

[evilspiritM3]

Is there a link for this press release? Anybody know about what the fuel economy is looking like on this 3.0L engine?

[Booster]

Originally Posted by BCoBaby

thats the first time ive seen the e92 SP wheels on a e90.. it doesnt look bad but i like the 19'' sport wheels that come with the e90 SP better

I think those are style 199's on the show car, not 189's

[Simple1]

damn both look really good!

[a burrito]

i wonder what the bmw diesel engine sound like

[MTV]

Hopefully not like the VW's!

[benyl]

Wonder what the price on the X5 will be.

[vladinecko]

425 lb-ft, that's gonna pull like a crazy

[RussRamz]

Originally Posted by evilspiritM3

Is there a link for this press release? Anybody know about what the fuel economy is looking like on this 3.0L engine?

The 335d Sport Sedan in UK advertises 37.7/42.2 mpg! This converts to US MPG of 31/39 mpg respectively. Pretty darned good.

[iPhil]

Originally Posted by a burrito

i wonder what the bmw diesel engine sound like

Not very good compared to 6 cilinder gasoline powered cars (like the 335i for example) but very acceptable (certainly for a diesel). And it's very quit aswell, so if you play loud music in your car you barely hear the engine.

Here's a review by Autospies, in wich everyting about it is very well explained.

I have a 335d and I'm very satisfied about it.

[iPhil]

But is it true that the engine only gets 265 hp in the states? In Europe it has 286...

[sparkyg]

Urea injection? No likie there.

Where are you going to buy that fresh tank of urea? Shell??

More info on urea injection.


"The urea SCR catalyst is an approach to nitrogen oxide (NOx) reduction that major European truck manufacturers—notably DaimlerChrysler with its “BlueTec” systems—have already decided to adopt on their vehicles. DaimlerChrysler owns 85% of Mitsubishi Fuso, so this licensing of FLENDS from Nissan Diesel is interesting.

The FLENDS system conforms to Japan’s 2005 new long-term exhaust emission standards, which mandate particulate matter (PM) emissions of no greater than 0.027 g/kWh and NOx emissions of no more than 2.0 g/kwh. Nissan Diesel introduced the first production application of FLENDS in a heavy-duty truck last year.

Using ultra-high pressure fuel injection reduces the PM level substantially, however, there is a concomitant large increase in NOx emissions, due to the higher temperature and more complete combustion attendant to the reduction of PM. The urea SCR catalyst then, in turn, reduces the NOx emissions to the target level.

Urea SCR systems basically consists of a storage tank for the urea solution, a urea injection system, and a catalyst. The system injects urea into the hot exhaust gas where the urea decomposes into ammonia (NH3). NOx reacts with NH3 on the surface of the catalyst to produce nitrogen (N2) and water vapour (H2O).

4NO + 4NH3 + O2 → 4N2 + 6H2O
nit. oxides ammonia oxygen nitrogen water

The urea is supplied in the form of AdBlue—a standardized, 32.5% liquid urea solution. (Hence DaimlerChrysler’s BlueTec.)

One of the critical factors in a urea SCR system is the dosing. It is important that neither too much nor too little urea is mixed in with the exhaust gas, and this requires a good sensor/injector system. An underdosage would result in failure to conform to the NOx emission limits.

The other critical factor with such a system is making sure that the vehicle has a supply of the urea solution. That requires (a) an infrastructure to supply it and (b) drivers that fill up the tank. Not filling the urea tank doesn’t affect the ability of the truck to move; it just torpedoes any compliance with emissions standards."

[Placey]

The urea will be replenished w/ the scheduled maintenance.

[535desire]

Originally Posted by philip

But is it true that the engine only gets 265 hp in the states? In Europe it has 286...

the SCR system adds back pressure to the system.

[535desire]

Originally Posted by evilspiritM3

Is there a link for this press release? ...

http://www.press.bmwgroup.com/pressc...2573C4007A1FE4

[RichP]

Originally Posted by Placey

The urea will be replenished w/ the scheduled maintenance.

Yeah, it seems not a whole lot of the solution is needed..

From BMW Press:

"To introduce AdBlue technology into the car, BMW has developed a two-tank system ensuring convenient use of this new technology with all the benefits and ease required by the customer. The amount of AdBlue required in each case is injected from the active tank (approximately 1.6 gallons in volume) by means of a dosage pump. And since the urea solution would freeze at a temperature of 12.2oF, this active tank, as well as the dosage pipes, are heated.

The active tank is connected to a second reservoir, referred to as the passive tank. With its additional capacity of approximately 4.5 gallons, this passive tank offers a plentiful supply of the urea solution. The average range provided with this supply capacity is indeed sufficient to have the tank system replenished only when the driver needs to change the engine oil. Hence, the large amount of AdBlue stored in the reservoir enables the customer to enjoy continuous driving, without having to change his/her service intervals. The driver therefore benefits from the advantages of this environmentally friendly emission technology throughout the entire running life of the car, without any additional service or visits to the workshop. Since all BMWs sold in the US benefit from The BMW Maintenance Program, the refilling of the AdBlue tanks will be a no-charge service for 4 years or 50,000 miles."

[pbdm4k]

So how much will it be for an AdBlue refill after your free maintenance period?

[535desire]

Originally Posted by pbdm4k

So how much will it be for an AdBlue refill after your free maintenance period?

No one seems to know.

The EPA is concerned about people not maintaining the urea-SCR systems. The idea is to motivate folks to keep them maintained. One way this could be accomplished is to make the urea solution cheap and/or easy to obtain. Another is to scare the crap out of the end user with the threat of heavy fines

[Nyulak]

They should make a Urea Home Kit. Your body can supply most of the chemicals anyway.