Gumout GDI Q&A Answers

click here for the Gumout GDI Q&A answers

Recent Topics
Google earth download issue
by Eddie
Today at 11:17 AM
Metal flakes in oil filter drainage?
by aualtima3.5
Today at 10:54 AM
Aftermaket headlights older PU what to get?
by Blaze
Today at 10:49 AM
2001 Civic HX burning oil question.
by shrooms
Today at 10:47 AM
Saga of New Tires
by Smoky14
Today at 10:44 AM
Instead of hacksaw what can I use?
by Vikas
Today at 08:53 AM
Oreilly Summer Sweeps
by PReal
Today at 08:41 AM
w116 Mercedes 1979 300sd ATF recommendation
by Gito
Today at 07:53 AM
Fram Ultra XG6607 cut open after 15K miles
by Quattro Pete
Today at 07:48 AM
Gun shaped Cell Phone cases
by mjk
Today at 07:20 AM
Inventors of yesterday
by CourierDriver
Today at 07:16 AM
Vacuum Tester to bleed brakes
by Spetz
Today at 07:14 AM
Newest Members
usce, GBBoy, grassman, jamesrapai, LMS
54563 Registered Users
Who's Online
85 registered (01_celica_gt, albertdi, ag_ghost, 2009Edge, 11 invisible), 1936 Guests and 119 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
54563 Members
66 Forums
233772 Topics
3754837 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 2 of 4 < 1 2 3 4 >
Topic Options
#3263684 - 01/29/14 11:16 AM Re: Urea injection for diesel [Re: wemay]
wemay Offline


Registered: 04/04/12
Posts: 3878
Loc: Everglades
Thanks A_Harman
_________________________
14 Sonata 2.4 : 5W-30
13 Santa fe 2.0T : 0W-40

Top
#3263688 - 01/29/14 11:18 AM Re: Urea injection for diesel [Re: JHZR2]
Wesbo Offline


Registered: 11/20/05
Posts: 15
Loc: Charlotte, NC
Could you pee in the tank to get enough solution to get home? I'm only partly kidding...

Top
#3263761 - 01/29/14 12:37 PM Re: Urea injection for diesel [Re: Wesbo]
AP9 Offline


Registered: 07/10/13
Posts: 225
Loc: Chicago suburbs
Originally Posted By: Wesbo
Could you pee in the tank to get enough solution to get home? I'm only partly kidding...


I wondered the same thing myself! grin But there are sensors to check urea concentration that ensure the content of the tank is truly DEF.

I'm thinking someone ought to invent a filter that would separate the water and urea out.

Top
#3263968 - 01/29/14 03:31 PM Re: Urea injection for diesel [Re: AP9]
A_Harman Offline


Registered: 10/01/10
Posts: 5087
Loc: Michigan
Originally Posted By: AP9
Originally Posted By: Wesbo
Could you pee in the tank to get enough solution to get home? I'm only partly kidding...


I wondered the same thing myself! grin But there are sensors to check urea concentration that ensure the content of the tank is truly DEF.

I'm thinking someone ought to invent a filter that would separate the water and urea out.


I've also been wondering about the same thing. Is there some kind of special diet one could go on to make himself a urea dispenser? Imagine the earnings possibilities for just doing something that comes naturally. I think we may have a solution to the unemployment problem.
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

Top
#3268573 - 02/02/14 10:02 PM Re: Urea injection for diesel [Re: wemay]
artificialist Offline


Registered: 09/23/07
Posts: 7506
Loc: Florida
Mazda avoided using urea injection because they created a diesel with 14:1 compression. That kept peak combustion chamber temperatures down, avoiding the higher temperatures that create NOx.
_________________________
2010 Lancer Ralliart Sportback

Top
#3268626 - 02/02/14 10:56 PM Re: Urea injection for diesel [Re: artificialist]
montr Offline


Registered: 11/16/13
Posts: 6
Loc: Georgia
Originally Posted By: artificialist
Mazda avoided using urea injection because they created a diesel with 14:1 compression. That kept peak combustion chamber temperatures down, avoiding the higher temperatures that create NOx.


In theory so far. Mazda has delayed the introduction of their Diesel to North America. I think the problem is certification.

Top
#3268642 - 02/02/14 11:11 PM Re: Urea injection for diesel [Re: montr]
artificialist Offline


Registered: 09/23/07
Posts: 7506
Loc: Florida
Originally Posted By: montr
Originally Posted By: artificialist
Mazda avoided using urea injection because they created a diesel with 14:1 compression. That kept peak combustion chamber temperatures down, avoiding the higher temperatures that create NOx.


In theory so far. Mazda has delayed the introduction of their Diesel to North America. I think the problem is certification.


Yes, I have heard rumors that the engine has bad fuel dilution due to frequent DPF regeneration, and that it takes a while to warm up, which raises cold weather emissions.
_________________________
2010 Lancer Ralliart Sportback

Top
#3269315 - 02/03/14 03:26 PM Re: Urea injection for diesel [Re: wemay]
BMWTurboDzl Offline


Registered: 04/15/10
Posts: 1589
Loc: Atlanta,GA
Originally Posted By: wemay
Chevy advises to fill every 10k mi or so. Out of curiosity, what would happen if you failed to do so?


My vehicle gives a warning of "999 miles until no start". IMO if you can't fill with that mileage you have no business driving.
_________________________
'15 435i - BMW branded Shell 5w30.
Prev
'10 335d
'06 330i
'03 330i

Top
#3272077 - 02/06/14 04:44 AM Re: Urea injection for diesel [Re: TiredTrucker]
ac_tc Offline


Registered: 05/06/08
Posts: 582
Loc: sweden
Originally Posted By: TiredTrucker
I would have much rather the Urea/SCR thing would have been done first instead of the EGR [censored]. I don't care for any of this stuff, but having all emissions stuff handled outside the engine is a far better way to do it than making an engine eat it's own feces. As a side note, it has been shone that they can reduce EGR because of the SCR, and this in turn allows the engine to be more efficient and in turn the DPF doesn't have to do regens as frequently. Now, if they could just do away with the EGR, things might be more tolerable.


Urea injection is better in every way compared to the heavy egr thats needed to control nox.
Ok, it has one drawback...you have to fill at a rate of 1-3% but the tanks are generally big so its usually every third tank or so.
The def tech saves you about 3 bucks of diesel for every buck that you buy def fluid for by simply
allowing the engine to run at higher efficency, egr lowers the engines efficency..
_________________________
-98 Dodge Durango 5.9 4*4 HDEO 10w- 40 ci4
-04 PT Cruser GT 10w- 40 HDEO ci4
-Everything else HDEO 10w- 40 ci4/STOU 10w-30/THF

Top
#3272613 - 02/06/14 02:17 PM Re: Urea injection for diesel [Re: montr]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 16407
Loc: Sunny Florida
Originally Posted By: montr
Originally Posted By: artificialist
Mazda avoided using urea injection because they created a diesel with 14:1 compression. That kept peak combustion chamber temperatures down, avoiding the higher temperatures that create NOx.


In theory so far. Mazda has delayed the introduction of their Diesel to North America. I think the problem is certification.


OMG, there is no end to the Skyactiv dynasty is there?
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

Top
#3274810 - 02/08/14 12:54 PM Re: Urea injection for diesel [Re: wemay]
Shaman Offline


Registered: 07/27/04
Posts: 2322
Loc: Frankfort, Kentucky
Despite my disgust for the politics that brought this about, it will make factory water injection more likely in the future. It also creates new tanks for people that owned the vehicle before the EPA vomitted on it to use for water/methanol kits, referring to Duramaxes in particular.

Top
#3276336 - 02/09/14 08:16 PM Re: Urea injection for diesel [Re: artificialist]
JHZR2 Offline



Registered: 12/14/02
Posts: 35762
Loc: New Jersey
Originally Posted By: artificialist
Yes, I have heard rumors that the engine has bad fuel dilution due to frequent DPF regeneration, and that it takes a while to warm up, which raises cold weather emissions.


The regen thing I get, the warm up??? Other than some higher thermal efficiency, I dont see a substantial difference to warm up a diesel than a ga$$er, because if the same alloys, lube types, etc. are used, and the same power is output, its a matter of mass and heat capacity.

The diesel is more efficient, but the few % dont make a big difference given the quantity of waste heat. The engines are heavier, but that heat capacity difference can be calculated, and if normalized, wouldnt be any longer. Practically speaking it may not be any different.

Top
#3285979 - 02/18/14 08:11 AM Re: Urea injection for diesel [Re: JHZR2]
ac_tc Offline


Registered: 05/06/08
Posts: 582
Loc: sweden
Originally Posted By: JHZR2
Originally Posted By: artificialist
Yes, I have heard rumors that the engine has bad fuel dilution due to frequent DPF regeneration, and that it takes a while to warm up, which raises cold weather emissions.


The regen thing I get, the warm up??? Other than some higher thermal efficiency, I dont see a substantial difference to warm up a diesel than a ga$$er, because if the same alloys, lube types, etc. are used, and the same power is output, its a matter of mass and heat capacity.

The diesel is more efficient, but the few % dont make a big difference given the quantity of waste heat. The engines are heavier, but that heat capacity difference can be calculated, and if normalized, wouldnt be any longer. Practically speaking it may not be any different.


Diesels are infact so effective at idle that they generally cant keep hot..


Edited by ac_tc (02/18/14 08:11 AM)
_________________________
-98 Dodge Durango 5.9 4*4 HDEO 10w- 40 ci4
-04 PT Cruser GT 10w- 40 HDEO ci4
-Everything else HDEO 10w- 40 ci4/STOU 10w-30/THF

Top
#3286015 - 02/18/14 09:13 AM Re: Urea injection for diesel [Re: wemay]
Miller88 Offline


Registered: 04/09/08
Posts: 8828
Loc: Onondaga County
Why not kick all of this EPA garbage to the curb and go back to reliable, simple diesels?

Oh, wait, then Al Gore wouldn't be a multi billionaire ...


Edited by Miller88 (02/18/14 09:13 AM)
_________________________
'00 Jeep Cherokee
'11 Ford Focus

Top
#3286090 - 02/18/14 10:54 AM Re: Urea injection for diesel [Re: Miller88]
BMWTurboDzl Offline


Registered: 04/15/10
Posts: 1589
Loc: Atlanta,GA
Originally Posted By: Miller88
Why not kick all of this EPA garbage to the curb and go back to reliable, simple diesels?

Oh, wait, then Al Gore wouldn't be a multi billionaire ...


Maybe we should all just go back to walking everywhere. It was much simpler and more reliable.

The concepts around EGR and SCR are sound.
_________________________
'15 435i - BMW branded Shell 5w30.
Prev
'10 335d
'06 330i
'03 330i

Top
Page 2 of 4 < 1 2 3 4 >