[FRIAM] Diesel OK?

[Marcus Daniels]

The X3 is a nice car, but then there’s..

https://cleantechnica.com/2018/01/06/tesla-tech-conquers-great-small-towing-semi-trucks-wiping-windshields/

From: Friam <friam-bounces at redfish.com> on behalf of Frank Wimberly <wimberly3 at gmail.com>
Reply-To: The Friday Morning Applied Complexity Coffee Group <friam at redfish.com>
Date: Friday, March 30, 2018 at 5:51 PM
To: The Friday Morning Applied Complexity Coffee Group <friam at redfish.com>
Subject: Re: [FRIAM] Diesel OK?

If you want acceleration, get an X3 with the six-cylinder turbo engine.  At this point I think all BMWs have turbocharged engines, diesel and not.


----
Frank Wimberly

www.amazon.com/author/frankwimberly<http://www.amazon.com/author/frankwimberly>

https://www.researchgate.net/profile/Frank_Wimberly2

Phone (505) 670-9918

On Fri, Mar 30, 2018, 5:32 PM Owen Densmore <owen at backspaces.net<mailto:owen at backspaces.net>> wrote:
Wait! Your sports car (Porsche) would have a high compression ratio, right??

My bias is away from diesel at the moment, simply because it costs more and some of the benefits are no longer with us. No longer cheaper etc. But they do have more pick-up, and apparently better maintenance.

Keep the cards and letters coming tho, very useful!

   -- Owen

On Fri, Mar 30, 2018 at 5:02 PM, Eric Smith <desmith at santafe.edu<mailto:desmith at santafe.edu>> wrote:
Thank you Frank and Steve, both,


> On Mar 31, 2018, at 3:33 AM, Frank Wimberly <wimberly3 at gmail.com<mailto:wimberly3 at gmail.com>> wrote:
>
> My petrol car has a 12.2 to 1 compression ratio and sparkplugs.

Boy, I was way off.  Thank you.

Eric


>
> ----
> Frank Wimberly
>
> www.amazon.com/author/frankwimberly<http://www.amazon.com/author/frankwimberly>
>
> https://www.researchgate.net/profile/Frank_Wimberly2
>
> Phone (505) 670-9918<tel:%28505%29%20670-9918>
>
> On Fri, Mar 30, 2018, 9:53 AM Steven A Smith <sasmyth at swcp.com<mailto:sasmyth at swcp.com>> wrote:
> I just read up a little on Selective Catalytic Reduction which seems to
> characterize Bruce's Urea-injection system.
>
>     https://en.wikipedia.org/wiki/Selective_catalytic_reduction
>
> Which is similar but different to Air Injection:
>
>     https://en.wikipedia.org/wiki/Secondary_air_injection
>
> both in various combinations with two-way and three-way catalytic
> converters:
>
>     https://en.wikipedia.org/wiki/Catalytic_converter
>
>
> I remember in the late 70s, early 80s when we imagined that an ICE
> engine that could efficiently convert atmospheric oxygen and the
> hydrocarbons of fossil fuels into pure CO2 and H20 would solve any and
> all "pollution" problems.   Folks like Bill McKibbin were already trying
> to alert us to Greenhouse Gas problems, but I know *I* wasn't listening
> past my TechnoPhilic hearing aids.
>
> As for Ed's apocryphal "peeing in the gas tank", urine being primarily
> H20...  it seems highly unlikely that the <2% additive of Urea or Uric
> Acid would be any benefit in emissions, though there have been systems
> that injected water into the air-fuel charge which I believe (under very
> limited conditions) increased power/efficiency by small margins, but I
> think that was a result of cooling the incoming mixture effectively
> increasing the difference between input/output temps resulting in
> similar effects of increasing compression ration?
>
>
> - Steve
>
> > I seem to remember this as being associated with higher nitrogen oxide
> emissions than richer-burning.  Has that long since been fixed?
> > I believe that NO emissions are associated with the lean burn of
> > Petrol... I'm not sure why Diesel is less apt to that... perhaps the
> > longer chain hydrocarbons, the higher compressions (a different
> > pointin the pressure/volume/temp space?) or the more "natural" or
> > complete combustion conditions without a spark?
>
>
>
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