6) centre of mass / gravity - much lower for the Durango - helpful as speed rises. (0.2 seconds)

Poseted above, but applies here too:

I thought this at first too, but it actually does make sense when you think about it. The $125 million is divided among a few dozen victims for several million each. The $850 million for the automakers get put towards the labor used to replace the airbags on the 33.8 million affected vehicles, or $25/vehicle

True, but a car with a large frontal area and a low Cd, can be more strongly affected by air resistance than one with a low area and higher Cd

Likely not. The most common ways to reduce engine out NOx emissions are:

What exactly are you getting at? You’ve argued a different point in each of your posts...

I work in diesel engine research, so burnin’ dinosaurs is part of it. Trying to burn less though!

It’s very easy to make diesel engines that meet emissions standards. It just takes expensive aftertreatment equipment, and a bit of a hit on efficiency and performance to do it.

No, please question their data used to support emissions regulations. I’m just trying to say that their measurement precision and accuracy for specific test cycles has been very good. Two totally different things.

Today’s oxygenated gasoline is not as fuel efficient, but is worlds cleaner

The EPA regulations allow for emissions control to be altered/turned off for some driving conditions in order to increase the lifespan of some engine and aftertreatment components, but they have to be disclosed by the manufacturer and approved by the EPA. In this case, FCA did not disclose some of those emissions…

The first two articles you posted deal more with a general estimation of vehicle pollution. That’s some pretty bad stuff, but it’s not really the same as the testing done on the vehicles for emissions compliance. Also, the EPA and CARB typically use independent test facilities (like the one where I work) for their…

Essentially, yes. Diesel combustion usually occurs with lots of excess air (which is 78% Nitrogen). With high combustion chamber temperatures, that combines with Oxygen to form NOx. In gas engines, NOx is reduced using a 3-way catalytic converter, but these only have high efficiency when the exhaust gas comes from…

You’re correct. In the wake of the VW cheating scandal, both CARB and the EPA began testing vehicles more rigorously. This testing revealed that the 2014-2017 3.0L EcoDiesels had undisclosed software in the engine management unit that could affect emissions performance. The 2014-2016 vehicles were already on the road,…

Oh yeah, the regenerative braking does wonders for hybrids and EVs in stop and go traffic

Try this too:

Woah, no need to get so defensive...I was just trying to start a conversation to try to dispel a myth commonly associated with electric vehicles.

What was the top speed for that one mile run? I’d imagine that air resistance at high speed would probably be a greater hindrance to efficiency than the electric motor. I’m sure you know that the energy required to go from 60-120 is exponentially more than what is required to go from 0-60. While I do agree that you…

This isn’t exactly true. On ICE cars, doing 0-60 runs all day is inefficient not because of the load on the engine, but because the engine needs to run at high RPM to produce max power. In ICEs, friction losses increase farily dramatically with engine speed and therefore reduce efficiency. For electric motors, the…

has the range of a Full-sized pick-up truck on 1/4 tank if driven with any gusto at all