VW emissions

[AmericanThunder]

Disagree. The standards to be met are only being achieved by use of cheat mechanisms that are only active when certain criteria are detected. Its not at a standstill that the cheat comes into play. The criteria are, front wheels rolling (clarification req'd), rear wheels stationary, bonnet open, revs being held at the test points.
By fudging the test VW are admitting that their engines are not capable of meeting the standard as set. They only did this because they know they engines can't meet the standard. They had three options - develop an engine that would pass, not sell to that market or cheat.

They chose to cheat because it was cheaper...... until they were caught. Thats why VW are wrong in my opinion.

This was an interesting read: Volkswagen diesel scandal illustrates the need for tighter emission measurement procedures - Autelligence

 

[Saturn Simon]

I always thought it was funny how until more recently VW were the only mainstream manufacturer (Chevrolet offer a diesel Cruze in the US these days) able to get their diesel engines to pass US emissions tests. Now we know why!

I've always been anti diesel anyway, and have always thought they were filthy. Sure they get more mpg and therefore give low CO2 figures, but their NOx and particulate emissions have always been poor compared to petrol cars. I've been stuck behind even new-ish diesels that belch out black smoke every time the driver steps on the gas. The fumes come straight into the car behind and it's not pleasant.

 

[July92RS]

There is more to this saga than meets the eye,,,,As a tester it has become more difficult to get any sort of reading from several car makers now days and what with multiple engine sharing that goes on between manufacture's its wide open now,,not to mention that most have some sort of DPF system and also many engine's have a limiter now so getting any decent rpm over 3k is just not possible.I believe that the car makers also disable ABS for the rolling road testing as several times i have needed to run a car in gear on a lift to diagnose a drive line noise and found it not possible as the ABS detects that 2 wheels are not rotating and cuts the rpm,not to mention the dash having a fit with abs,asr,esp and any other warning light the control units decide to put on,

 

[TransAmDan]

I'd rather have the T/A anyday.

 

[TransAmDan]

Flow transformer device announced as key retrofit for affected cars

VW has made public details of a fix for its 1.6-liter and 2.0-liter diesel engines in Europe, unveiling the solution which it presented to German authorities some two weeks prior, Automotive News Europe reports.

The proposed solution for the smaller 1.6-liter is nothing short of breathtaking in its simplicity, with the automaker only indicating that all the larger 2.0-liter engine will require is a software update.

How does VW propose to modify the 1.6-liter diesels? The first part of the fix obviously involves a software update, which will presumably delete or replace the software that allowed the cars to detect when they were in testing mode and turn on their full range of emission-control systems. Wiping that part of the engine software was clear from the beginning.

The second part of the fix is a simple-looking plastic device that VW refers to as a "flow transformer" which it will install in front of the engine's air mass sensor.

Read more: Here's how VW will fix its 1.6- and 2.0-liter diesel engines (in Europe) | Autoweek

 

[AmericanThunder]

And all the while they have been losing business.. 25% in the US alone, and it serves them right.