2007 CAT C15 A

They've had C15s with DEF for a few years in the off-road market.

 

My understanding was Cat had issues with nozzle coking on the on-road engines. I believe they used compressed air from the truck to try and keep the nozzle from coking. Non-road engines used a heated nozzle instead. Theory is that the coke won't buildup on the hot surface of the nozzle. I've been told it works better than air but we rarely, if ever, touch on-road Cats these days.

 

Yea but these are the motors that they are testing and they watch the motors with a computer in some office across the country they just bring them here because it's rare they ever cut off and run at 16-1700 rpms under load all year

 

There was a conversion on them to go from the air purge to the heated nozzle instead. Probably most (if not all) have been done by now. Compressed air actually was supplied by a lil tiny electric air compressor. The change up help alot but there was still enough other issues with them.
Our local Cat shop wont touch on road Cats anymore either. More business for us!

 

Good to know. I've never seen a truck or truck engine roll thru our door yet either.

 

That would be nice to have CAT back in the highway engine business again. All my drivers who drove trucks with CAT engine love them.

 

It is a nice dream, but I can't see any truck builder offering them. Paccar is to heavily tied to Cummins.