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Search: Keyword(s): ; Posts Made By: wxmanCCM
Forum: BMW Diesel Owners / Enthusiasts 04-08-2014, 01:45 PM
Replies: 23
Views: 812
Posted By wxmanCCM
I certainly don't disagree. I'm just unconvinced...

I certainly don't disagree. I'm just unconvinced that EV technology is any "greener" than diesel technology, from a full life-cycle emissions perspective.

The NAS report mentioned in my previous...
Forum: BMW Diesel Owners / Enthusiasts 04-08-2014, 08:12 AM
Replies: 23
Views: 812
Posted By wxmanCCM
From an emissions perspective, there are many...

From an emissions perspective, there are many studies which cast doubt on the environmental benefits of electric vehicles in general. A 2009 study by the National Academy of Sciences (NAS) concluded...
Forum: BMW Diesel Owners / Enthusiasts 02-20-2014, 08:45 AM
Replies: 10
Views: 831
Posted By wxmanCCM
Agree. EPA itself acknowledged the...

Agree.

EPA itself acknowledged the under-representation of its official mileage for diesels in the "old" fuel mileage estimates (pre-2008) by about 4.3% (EPA, "Final Technical Support Document -...
Forum: BMW Diesel Owners / Enthusiasts 02-10-2014, 07:49 AM
Replies: 107
Views: 4,998
Posted By wxmanCCM
Completely agree. There was a survey...

Completely agree.

There was a survey conducted several years ago in which diesel vehicle owners focus on the performance and other aspects of diesel vehicles other than just fuel economy...

...
Forum: BMW Diesel Owners / Enthusiasts 02-07-2014, 01:00 PM
Replies: 17
Views: 1,147
Posted By wxmanCCM
In the NEDC (official European test driving...

In the NEDC (official European test driving cycle), the X3 xDrive20d (functional equivalent of the U.S.-spec X3 xDrive28d?) officially receives 5.4 l/100 km (urban)/4.8 l/100 km (extra-urban)/5.0...
Forum: BMW Diesel Owners / Enthusiasts 12-23-2013, 12:38 PM
Replies: 27
Views: 2,099
Posted By wxmanCCM
The 2014 Euro-spec 335d xDrive gets the same...

The 2014 Euro-spec 335d xDrive gets the same rating as the Euro-spec 530d xDrive (analog of the U.S.-spec 535d) in the official NEDC tests (6.4 l/100 km urban; 4.9 l/100 km extra urban). The...
Forum: BMW Diesel Owners / Enthusiasts 12-12-2013, 10:09 AM
Replies: 46
Views: 1,396
Posted By wxmanCCM
Not sure. I actually wrote an email to CARB...

Not sure.

I actually wrote an email to CARB inquiring about this apparent conflict in certification level. This is their response to my inquiry...

"...A manufacturer has the option to certify...
Forum: BMW Diesel Owners / Enthusiasts 12-12-2013, 08:35 AM
Replies: 46
Views: 1,396
Posted By wxmanCCM
Steve, It may be of interest to you to note...

Steve,

It may be of interest to you to note that the 328d technically meets the vehicle emission requirements of SULEV, even though it's "only" certified as ULEV...


2014 328d (Certified...
Forum: F30 / F31 / F32 / F33 (2012 - current) 12-12-2013, 07:49 AM
Replies: 169
Views: 8,456
Posted By wxmanCCM
Post #58 already has provided a very good...

Post #58 already has provided a very good response. Here are a few additions I can think of...

1) Complete combustion of hydrocarbon fuels results in CO2 and H2O as far as emissions are concerned....
Forum: BMW Diesel Owners / Enthusiasts 12-12-2013, 07:05 AM
Replies: 46
Views: 1,396
Posted By wxmanCCM
CO is actually an ozone ("photochemical smog")...

CO is actually an ozone ("photochemical smog") precursor. It has the same ozone production pathway as VOC/NMOG, just that it's much less potent of an ozone precursor than VOC.

The main reason CO...
Forum: BMW Diesel Owners / Enthusiasts 12-11-2013, 04:30 PM
Replies: 46
Views: 1,396
Posted By wxmanCCM
Steve, I have a web page that compares the...

Steve,

I have a web page that compares the well-to-wheels conventional ("smog-forming") emissions of the gasoline (1.8T - PZEV-certified) and diesel (TDI) versions of the 2014 VW Passat. The...
Forum: BMW Diesel Owners / Enthusiasts 12-11-2013, 02:51 PM
Replies: 46
Views: 1,396
Posted By wxmanCCM
If my calculations are correct, here are the...

If my calculations are correct, here are the composite emissions (regulated) of each...


Emission.....................2014 328dů............2014 328i (PZEV)
...
Forum: BMW Diesel Owners / Enthusiasts 12-11-2013, 01:28 PM
Replies: 46
Views: 1,396
Posted By wxmanCCM
Steve, The certified emissions only address...

Steve,

The certified emissions only address non-GHG emissions (including ozone precursor ("smog-forming) emissions), so unless the fuel mileage changes between the PZEV and ULEV versions, the GHG...
Forum: BMW Diesel Owners / Enthusiasts 12-11-2013, 10:25 AM
Replies: 46
Views: 1,396
Posted By wxmanCCM
There is a PZEV-certified version of the 328i....

There is a PZEV-certified version of the 328i. The official cert sheet is available at http://www.arb.ca.gov/msprog/onroad/cert/pcldtmdv/2014/bmw_pc_a0080352r1_2d0_pz.pdf. Is this the green variant...
Forum: BMW Diesel Owners / Enthusiasts 12-11-2013, 05:31 AM
Replies: 46
Views: 1,396
Posted By wxmanCCM
Steve, Yes same "wxman"! I agree that...

Steve,

Yes same "wxman"!

I agree that the Europeans are making no distinction between modern diesel vehicles and previous generation (i.e., Euro 4 and earlier). I've worked in some capacity of...
Forum: BMW Diesel Owners / Enthusiasts 12-10-2013, 08:30 AM
Replies: 46
Views: 1,396
Posted By wxmanCCM
Using official certified emissions of U.S.-spec...

Using official certified emissions of U.S.-spec 328d/320i/328i/ActiveHybrid 3, the following are the composite vehicle emissions (using a composite of FTP75/US06/SC03 certified emissions)...

...
Forum: BMW Diesel Owners / Enthusiasts 11-15-2013, 08:28 AM
Replies: 37
Views: 1,407
Posted By wxmanCCM
Sorry, I didn't realized this discussion was...

Sorry, I didn't realized this discussion was limited to climate damages.

Nevertheless, well-to-wheel emissions are included for ALL technologies, including gas and diesel. WTW is actually a subset...
Forum: BMW Diesel Owners / Enthusiasts 11-15-2013, 07:30 AM
Replies: 37
Views: 1,407
Posted By wxmanCCM
There was a study conducted by the National...

There was a study conducted by the National Academy of Sciences (NAS - is there a more respected scientific organization?) several years ago (report published in 2009) which concluded that "clean...
Forum: BMW Diesel Owners / Enthusiasts 09-25-2013, 07:31 AM
Replies: 36
Views: 2,015
Posted By wxmanCCM
I've filled up a 2.5 gallon "Blue DEF" container...

I've filled up a 2.5 gallon "Blue DEF" container at truck stops several times now. I then siphon the DEF from the container into the 335d DEF tank as required.

One issue I've encountered with...
Forum: BMW Diesel Owners / Enthusiasts 07-20-2013, 11:04 AM
Replies: 76
Views: 3,854
Posted By wxmanCCM
One of the reasons is that EPA uses a correction...

One of the reasons is that EPA uses a correction factor to account for "ethanol in fuel" according to the Technical Support Document to the "new" EPA fuel mileage estimates (EPA, "Final Technical...
Forum: BMW Diesel Owners / Enthusiasts 07-12-2013, 11:41 AM
Replies: 14
Views: 1,278
Posted By wxmanCCM
Both the 535d/535d xDrive...

Both the 535d/535d xDrive (http://www.arb.ca.gov/msprog/onroad/cert/pcldtmdv/2014/bmw_pc_a0080351_3d0_u2_diesel.pdf) and the 328d/328d xDrive/328d xDrive Sports Wagon...
Forum: BMW Diesel Owners / Enthusiasts 04-05-2013, 12:05 PM
Replies: 8
Views: 646
Posted By wxmanCCM
According to 2012 annual sales data, in car...

According to 2012 annual sales data, in car models that had both a conventional powertrain and hybrid powertrain, the hybrids had a "take rate" of 5.37% (159841 hybrids sold out of 2978504 total of...
Forum: BMW Diesel Owners / Enthusiasts 03-15-2013, 07:24 AM
Replies: 59
Views: 3,191
Posted By wxmanCCM
Based on the Euro-spec 335d fuel consumption vs....

Based on the Euro-spec 335d fuel consumption vs. the 2013 Euro-spec 320d (Euro 6) fuel consumption in the European NEDC, and applying those results to the U.S.-spec 335d (23 mpg city/36 mpg...
Forum: BMW Diesel Owners / Enthusiasts 11-29-2012, 11:27 AM
Replies: 40
Views: 3,530
Posted By wxmanCCM
One more data point to consider... According...

One more data point to consider...

According to data provided by BMW in its "BMW Technology Day 2009 - EfficientDynamics" publication, the previous version of the 535i/335i gasoline engine (N54?)...
Forum: BMW Diesel Owners / Enthusiasts 11-29-2012, 08:48 AM
Replies: 40
Views: 3,530
Posted By wxmanCCM
I completely agree. I have been keeping...

I completely agree.

I have been keeping close track of the latest diesel vs GDI gasoline offerings in the same vehicle platform in Europe with equal or nearly equal performance (based on 0-100...
Showing results 1 to 25 of 119

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