Gas or Diesel ?

[DanStokes]

Dan can you explain what Opacity is??, that is what the Emissions people here test Diesel for........

Sure. "Opacity" is the resistance of the exhaust to pass light. Particulate blocks light to varying degrees depending on how "thick' the PM is. It's difficult to accurately measure PM (involves a microbalance and lots of controlled conditioning) and while opacity is notoriously inaccurate it's a ton easier to measure so the state prograns have picked up on it as a control strategy.

It's just a light source of known output and a receptor. The system should be all warmed up and a filter of known opacity is held in front of the lens to check calibration. Then the opasimeter (I think I spelled that right) is put in line with the exhaust stream and the opacity is measured. On a modern Diesel it should be near zero.

Dan

[milner351]

The Ford V10 is only offered in the heavy econolines - which are going away at some point - soon the transit will take their place and be used on both sides of the pond - like the benz/freighliner/sprinter has done for Dodge.

I'm not sure I'll ever understand the non diesel push in the usa - it's on my long list of things I'll never understand.

[Beagle]

Don Hardy - of Don Hardy Racecar / Vega fame is who I was thinking of, big irrigation mills that run on a natural gas pipeline. I think they got some ink in CC or HRM about the 496's.

[dieselgeek]

You can still buy the 8.1's from places like GMPartsDirect and CreateEngineDepot.........

Yep, lots of places stepping up to replace those engines, even some overseas replacement castings being made from what I hear.

[TC]

8.1 (496) or 502? The stationary guys (pumps. Big pumps. Oil well / petroleum arena) probably are pissed. How long until the blocks run out?

You can still buy the 8.1's from places like GMPartsDirect and CreateEngineDepot.........

[dieselgeek]

you can still get hi perf big blocks from the general

you mean their crate engines? *chuckle*

[SpiderGearsMan]

you can still get hi perf big blocks from the general

[Deaf Bob]

So yeah, wrong, the DEF fluid systems are a LOT less complicated than the DPF systems that are on their way out. That's why the manufacturers are all moving to the fluid instead of the systems that are dry or use diesel.

And it's not "piss" - it's got Uric Acid in it, and piss has "Urea" in it, but they are not the same.

I have been getting massive doses of Diesel, Gasoline, and Gaseous Fuel emissions regulations and tuning lately, as I am working for a company who makes (among other things) stationary engines some of which must comply with the rules. The bottom line in this country is, the powers that be do NOT want us moving to Diesel like Europe did, so they're making it very cost prohibitive to use anything that runs on diesel fuel.

Thanks for clearing that up also... I know UREA is piss.. And uric acid is not .. But the dictionary says uric acid IS a compoenent of gout and kidney stones..
Joe says it best.. Wrapping sammiches in oil!.. Lol..

I like big blocks.. Got 3 runners on the ground (hopefully still are) I just like small blocks better..

[Beagle]

8.1 is dead now. That's why all the marine and stationary engine manufacturers are up in arms, lots of people were using the 8.1s in stationary applications but now there is a large hole in the marketplace.

8.1 (496) or 502? The stationary guys (pumps. Big pumps. Oil well / petroleum arena) probably are pissed. How long until the blocks run out?

[moparmaniac07]

Diesel NoX does not catalyze (that is, convert to benign substances when exposed to certain noble metals - I don't know why Otto cycle NoX does and Diesel NoX doesn't) so the best way to handle it (given current technology) is to hold it and regenerate the holding medium.

I thought the earlier 6.7 Cummins didn't need DEF or DPF? Or was it just that it didn't use DEF, but had to use the regen cycles to burn off the filter? I remember that being a big selling point about not needing the DEF, maybe I just assumed it used a more expensive cat.

Diesel NOx is probably different molecules (NO2, NO3, etc. not sure on number of Oxygens, maybe N24O36, don't know) or concentrations of molecules than gas produces.

[SpiderGearsMan]

GM wanted to go V10 like Ford And Mopar did , but the writing was on the wall way back in the 90s

[Barry Donovan]

I am into diesels, but learned more facts on the net than real world. it all changed very fast in trucking from the 80s to today..

did you know diesel is 14.5 to 1 to be exact stoich, gas is 14.7..
and diesel spits black when you have it "correct".

the hog is gasoline.

as soon as the black hits the air, it does go away. I believe a sequential turbo setup like in the modern 550 cat is plenty smart enough. Never see stuff flying.

the dpf and piss stuff is insanely retarded.. they are not thinking enough of the natural process to make it invisible.

[dieselgeek]

Jim - GM killed the 8.1? I thought you could still get that in the over 8500gvw stuff?

The Ford V10 lives on - but only in the Econoline heavies.

8.1 is dead now. That's why all the marine and stationary engine manufacturers are up in arms, lots of people were using the 8.1s in stationary applications but now there is a large hole in the marketplace.

[dieselgeek]

Spraying piss into the exhaust system in order to clean up emissions is a waste of time...... Just more crap to break down......

So yeah, wrong, the DEF fluid systems are a LOT less complicated than the DPF systems that are on their way out. That's why the manufacturers are all moving to the fluid instead of the systems that are dry or use diesel.

And it's not "piss" - it's got Uric Acid in it, and piss has "Urea" in it, but they are not the same.

I have been getting massive doses of Diesel, Gasoline, and Gaseous Fuel emissions regulations and tuning lately, as I am working for a company who makes (among other things) stationary engines some of which must comply with the rules. The bottom line in this country is, the powers that be do NOT want us moving to Diesel like Europe did, so they're making it very cost prohibitive to use anything that runs on diesel fuel.

[Beagle]

I'm somewhat impressed by the new TDI engine, too bad the car around it and their dealerships here Suck it. I didn't care for the ergo in a VW. The dealers ... we won't go there.

I might check into the Cruz if it's not too $$$.