[mad_as_he$$]

Sorry Red, “clean’ diesel has been dealt a death blow in the US.

[Red Badger]

Sadly so has ‘Clean Coal’.......................................

[RayChuang88]

Not necessarily. Volvo recently demonstrated a new generation of turbodiesel engines meeting Euro 6 emission standards where the low emission levels are guaranteed by Volvo for the life of the car, thanks to a new of generation of highly-advanced common-rail pressurized direct fuel injection.

[Ozark Tom]

An alternative diesel engine might now have an opening.

http://liquidpiston.com/technology/x-engines-diesel/

http://news.mit.edu/2014/liquidpiston-small-efficient-rotary-engine-1205

http://papers.sae.org/2014-32-0104/

http://www.popularmechanics.com/military/research/a15233/liquidpiston-darpa-contract/

http://www.wired.com/2014/11/tiny-engine-make-leaf-blowers-sound-less-like-jet-engines/

http://www.gizmag.com/liquidpistol-rotary/24623/