ULSD rant

[jmanatee2]

The last round of diesel emission laws for light duty pickups was/is a complete failure. I have an 06 model diesel pickup that gets a consistent 18-21 mpg, hand calculated. Take the current offerings by the big three and unless you remove the emissions equipment none of them are capable of making the same fuel economy numbers. The trucks aren't capable of doing more work, so where is the advantage of LESS fuel economy?

My stock 2008 Chevy Duramax averages 16-17 city / hiway mix I get 19-20 only hiway I have seen as high as 22

Towing 10k drops to 13-14

Plowing drops to 8 - 10 (but I think this has to do with the constant forward reverse messing with the computer)

 

[Johnbro]

Show me the emissions laws that pertain to the dpf and egr removal. The only one I know of is that the cat has to stay and I didn't say anything about removing that. I'm not trying to be a butt head just uninformed. I can also tell you that EGR on a diesel is a bad thing. Pumping soot and exhaust gases back into the intake is a good way to kill a diesel.

Edit: This pertains to pre-2010 engines

According to eHow, most states have laws concerning tampering with or altering emissions control equipment on vehicles. YMMV.

 

[Skyco]

Show me the emissions laws that pertain to the dpf and egr removal. The only one I know of is that the cat has to stay and I didn't say anything about removing that. I'm not trying to be a butt head just uninformed. I can also tell you that EGR on a diesel is a bad thing. Pumping soot and exhaust gases back into the intake is a good way to kill a diesel.

Edit: This pertains to pre-2010 engines

Here ya go-

United States Code: Title 42,7522. Prohibited acts | LII / Legal Information Institute

 

[boomer1025]

Future fuel to replace Diesel. CNG = Compressed Natural Gas, which should get rid of the DOC & DPF units.

 

[crbr]

let me clear up a couple things

1) I started talking about pickups. The fleet leases they have. And no one wants anything to do with these trucks when they are done. Arctic cold in the winter and sea breezes all summer (salt)

2) Being able to plug in is not enough, by the time the engine and the cab warm the DPF is crunched. And the speed limit on the field is 35 MPH. So no high speed runs to clean the filter

3) The problems are not just on the pick ups. The truck drivers getting new rigs are having fits. losing time due to complications and break downs. Most of the older trucks are going to stay on the road a long time

4) As for the delay on the regeneration, please remember that it can take 6 hours to get over the pass, how long can you delay it? Trust me, the haul road to the north slope is the worst in america. steep grades and brutal weather.

5) UREA does freeze, or at least gells to the point it won't work. Of coarse it was 58 below.

The systems on the trucks are not very usable.

Agreed. Everyone else should have started their own thread instead of jacking your perfectly good rant.

Diesel efficiency and practicality in a light duty wheel truck has become a joke. It's all hype... the one that I own included.


.

 

[PoorMansCat]

While this was true for the 2007.5 though 2010 the 2011's from Ford and GM are doing much better with the DEF. From the reports I have seen on the new Ford its averaging about 18mpg.

Chris

We were running several LB7 D-Max equipped 4500 and 5500 Chevys with service beds averaging about 20-21k lbs. These had 4:88 gearing, 5 speed Allisons and averaged 10-12 mpg....
These trucks were replaced with 2011 F550 Fords with the new 6.7L Ford, 6 speed auto, 4:88 gearing... these trucks also have service beds, although the new beds are much lighter. The trucks average weights are around 18K. These trucks get no better than 6.5mpg... Both trucks run 19.5 Michelins. By comparison, my 2003 4500 ran down the road at 2850rpm at 74-75 mph. My Ford is running 2500RPM at the same speed. One would think there would be a fuel efficiency gain by turning the lower RPM, it seems to be negated by the emissions strategy of the newer engine. The newer diesels do NOT get decent fuel economy when compared to the 2004 emissions engines. This does not include the higher maintenance costs associated with oil changes, dual fuel filters, urea.... IF the truck makes it down the road several years, there will be a point where the exhaust system will have to be pulled and cleaned in a special process or replaced, either of which will cost a substancial amount of $$$$..

 

[PoorMansCat]

Future fuel to replace Diesel. CNG = Compressed Natural Gas, which should get rid of the DOC & DPF units.

ABSOLUTELY!!!!.. I work on large stationary NG engines every day... talk about clean...
Being able to generate 3K HP. with NOX output of 60-70ppm PRE-catalyst..

 

[davkir]

I wonder if there is a market for something like the Class 8 gliders you can buy. All new except for engines, transmissions and rear ends. My neighbor is looking at a brand new Freightliner Glider that uses a remanufactured Cat that only has to meet 1994 emission standards.
It only has to use the transmission and rear end from the old truck to qualify.
Why not market something similar in the smaller truck market?