Anybody running the new Paccar MX

You and your salesman have to be thinking of the Maxxforce 15 due out this year from International. It is built upon the gray iron Cat C15 with a lot of stuff thrown on it my Navistar.

The MX is a compacted graphite block and head, nothing like a Cat. The Maxxforce 13 uses a compacted graphite block, but traditional gray iron heads.

Will truly be interesting to see how this all plays out. I hope that Paccar has good success with the engine. I also hope that International's Maxxforce proves to be a solid engine in the long run. Reason... if these engines prove to be solid performers with good mpg numbers then we all win.

Either way, there will be bugs to work out early in the game before we will see the long term results.

 

In the broad scheme of things, that is really sad. I had always hoped when SCR came along, that EGR would no longer be used. Then the engine could operate properly and all the emissions treatment be taken care of outside. Basically, who cares how much NOx is created in the engine, the SCR will take care of it. Also, with the engine operating at peak performance, soot levels would be lower and the DPF would get a little bit of a break, though still be needed. Just disabling the EGR on my ISX has reduced the soot considerably.

But since engines with SCR are using EGR anyway, the Maxxforce using only EGR doesn't look all that bad.

 

the future EPA2012 and Euro6 standards require very precision EGR and SCR. No way to use SCR ore OGR only.

Here there are MAN D28 engines available with EGR (euro-iv) and EGR+SCR (Euro-V). So seems to me next year they will sell Maxxforce SCR+EGR.

All Paccar MX engines offered here are with SCR now.

 

On the ag side, we are a bit behind when it comes to implementation of the emission equipment. I think it basically works out to the equivalent on one stage behind the OTR truck engines. The Case/New Holland and AGCO guys are running SCR systems on there new equipment. The claim is that with the SCR system to meet the tier 4 final a higher rate of DEF is used. SO instead of using 6% DEF to Diesel ratio it would be somewhere in the area of 9% DEF to diesel.

 

AGCO has had SCR out for almost 3 yrs, and yes it meets tier 4 with no egr and the motor is running on a tier 2 file, which mean alot more power and fuel economy over the same motor with a egr tier 3 compliant, we have both and thats how its been, the other side of the story Deere is meeting tier 4 with egr and exhaust filter, yeah it sounds easier than adding dpf, what they wont tell you they suck down fuel like there is no tomorrow

 

Scania has already euro 6 with XPI SCR and EGR.

 

so Cummins will use all this stuff in 2012 meeting EPA2012.

OMG, really more then enought emission crap. Seems to me it may be a myth about how harmfull are NOx and CO2 emissions.

 

In NA most of the EPA crap is driven from the CARB tree huggers.

 

We will know this fall, the new combine coming has a Sisu motor with SCR, and its replacing a combine with the same engine with EGR. Its suppose to be 20% more fuel efficient. It will be interesting to hear.

The Deere tier 4 is going to be interesting. They have had some prototype combines running around with there new motor in it. From what I have heard they are talking 2-3 gal /hr more than the tier 3 motors. They are going to have to do something about that or theres going to be a lot of peeved farmers out there


I was looking at the Paccar site, are they working on an engine that is going to be in the 550 to 600hp 2050 lbs-ft of torque range? There site only shows up to 485 hp and 1750 lbs-ft of torque. Or am I looking at the wrong page?

 

Just came across an interesting article a few days ago on Etrucker site. International has joined up with Eaton and Holley (yep the carburator people) to make a solid cartridge of Urea that would be used like the liquid DEF. When it runs out, just replace the cartridge. From what I read, the cartridge would be the equivalent of 19 gallons of Urea (but in a solid, compacted form), and since Urea makes up roughly 35% of DEF (give or take), the cartridge would be the equivalent of roughly 55 gallons of DEF. When the cartridge runs out, just pull it out and replace with a fresh cartridge. No possiblity of freezing, leaking on the ground, spilling by someone pumping or pouring DEF in, etc.

It has been mentioned that International may eventually add SCR to the Maxxforce engine line here. Well this might be the way they are going to do it. Interesting the stuff that these guys dream up.