- jeu. 31 déc. 2009 15:39
#237040
Voici ce que j'ai recu par e-mail cette apres-midi
NAVISTAR GOING TO SCR AFTER ALL?
by Rolf Lockwood
December 30, 2009 Vol. 5, No. 26
Just before Christmas a pretty interesting story cropped up, namely the news that Navistar has entered into a development and supply agreement with Amminex (www.amminex.net), a Danish emissions-control systems provider, to produce an SCR-based solution for diesel engines in years to come.
Whaaat? Navistar exploring selective catalytic reduction?
That was my first reaction, not surprisingly, and the second was to want more information. I didn't have the chance to explore any further at the time but my colleague Marco Beghetto did, asking a couple of questions of the International engine folks, whose responses I'll include here. We need to know more, but given the holiday season, I haven't yet had the chance to dive as deeply into this one as I'd like. That said, I did manage a long chat with an engineering friend of mine who knows the subject as well as anyone on the planet.
In fact I'm on holiday as we speak, by the way, so this newsletter will be more brief than most.
Anyway, right now we don't know all that much about the technology or the Chicago truck and engine maker's plans. It remains unclear what Navistar's system would look like exactly, if it's used at all, but the staple technology currently produced by Amminex differs little in principle from that seen on SCR engines used by Navistar's competitors to meet the EPA's 2010 nitrogen-oxide emission reduction targets. Both rely on ammonia released in a catalyst downstream of the DPF to create a chemical reaction that turns NOx into clean nitrogen and water vapour. The difference is in the ammonia storage and release systems.
Me semble qu'il etait temp.... Personne de l'industrie comprennais où Internationale, s'en allais avec leur nouveau moteur a EGR.... On dirais bien qu'il reste quelqu'un avec une intelligence un peu fonctionelle dans cette cie. :super: :mdr1:
NAVISTAR GOING TO SCR AFTER ALL?
by Rolf Lockwood
December 30, 2009 Vol. 5, No. 26
Just before Christmas a pretty interesting story cropped up, namely the news that Navistar has entered into a development and supply agreement with Amminex (www.amminex.net), a Danish emissions-control systems provider, to produce an SCR-based solution for diesel engines in years to come.
Whaaat? Navistar exploring selective catalytic reduction?
That was my first reaction, not surprisingly, and the second was to want more information. I didn't have the chance to explore any further at the time but my colleague Marco Beghetto did, asking a couple of questions of the International engine folks, whose responses I'll include here. We need to know more, but given the holiday season, I haven't yet had the chance to dive as deeply into this one as I'd like. That said, I did manage a long chat with an engineering friend of mine who knows the subject as well as anyone on the planet.
In fact I'm on holiday as we speak, by the way, so this newsletter will be more brief than most.
Anyway, right now we don't know all that much about the technology or the Chicago truck and engine maker's plans. It remains unclear what Navistar's system would look like exactly, if it's used at all, but the staple technology currently produced by Amminex differs little in principle from that seen on SCR engines used by Navistar's competitors to meet the EPA's 2010 nitrogen-oxide emission reduction targets. Both rely on ammonia released in a catalyst downstream of the DPF to create a chemical reaction that turns NOx into clean nitrogen and water vapour. The difference is in the ammonia storage and release systems.
Me semble qu'il etait temp.... Personne de l'industrie comprennais où Internationale, s'en allais avec leur nouveau moteur a EGR.... On dirais bien qu'il reste quelqu'un avec une intelligence un peu fonctionelle dans cette cie. :super: :mdr1:
Le dieu des brokers...(vive le modestie)
- By IronWolf2