All about turbos!!!

tigersharkdude said:
NHTSA and the government big wigs
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NHTSA? It's don't make sense to me,

USA have Legacy, Outback, Forester, and Impreza for gasoline engine, but Legacy, Outback, Forester, Impreza for diesel engine nope. They are same body, just difference engine and that's it.
 
tigersharkdude said:
Exactly, the government doesnt want these epic mpg cars here as ppl will buy them, hen oil corporations will lose money because less gas is being sold, hence the government will make less tax money AND a number of big government ppl own parts of oil corporations and in time they wouldnt earn as much money because the oil corporation made less money
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simple - raise the oil price if less gas is being sold. and government can simply raise the registration cost.
 
The Highlander said:
NHTSA? It's don't make sense to me,

USA have Legacy, Outback, Forester, and Impreza for gasoline engine, but Legacy, Outback, Forester, Impreza for diesel engine nope. They are same body, just difference engine and that's it.
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EPA nope? NHSTA nope?

then who?
 
Jiro said:
EPA nope? NHSTA nope?

then who?
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USA is not enough for diesel market unlike Europe. Europe is around 80% of diesel and USA is around 10% (I guess) So Fuji don't bother send Subaru Diesel to USA,

You should know that new diesel is pretty low emission than new gasoline. Whatever people think diesel is very high emission that's old school diesel only due no turbocharger, no computer, no exhaust fluid and non-electric fuel system.


That's why my friend and I had a hard time to find USED VW with TDI from midwest area.
 
dieselengine.jpg


If you don't get it? Bald dude's real name is Vin Diesel.
 
The reason why I think it is EPA even though you said emission are low with Turbo on Diesel engines. You may be right but here is the question, why did NYS prohibit sale of Diesel powered cars back in early 2000's. They finally lift it around 2004 or something. I was told the ban were due to emission issue. I was like yeah right, does not make damn sense cause diesel engine gets almost twice MPG than gasoline counterparts.
 
The Highlander said:
What's about other 49 states?
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49 states are following California smog regulation but they(49 states) are soft on the little dirty vehicles. If the newer import vehicles are about to market in USA, they must met CARB (California Air Resources Board) requirement then they can market in 50 states.
 
I found one link.....

European emissions rules allow a diesel to emit up to 0.29 grams of nitrous oxide (NOx) per mile - which is about what the typical diesel school bus or trash truck emitted 5 years ago
US regulations (US EPA regulations) on the other hand, only allow a diesel to emit 0.07 grams of NOx per mile, make compliance a costly effort.

Subaru Diesel Cars: Why You Can’t Buy One in the USA
 
The main reason is that diesel engines without the filtering devices are much more dirtier than the gasoline versions which is why they don't pass the strict emission rules in California. Europe, on the other counterpart is more flexible and have different society. It is very hard to get a diesel to approve CArB rules. Mercedes did make it with one model called bluetec diesel and the VW TDI as well. Subaru just couldn't figure it out, pretty much. The mpg ratings with the Subie is impressive.
 
sequoias said:
The main reason is that diesel engines without the filtering devices are much more dirtier than the gasoline versions which is why they don't pass the strict emission rules in California. Europe, on the other counterpart is more flexible and have different society. It is very hard to get a diesel to approve CArB rules. Mercedes did make it with one model called bluetec diesel and the VW TDI as well. Subaru just couldn't figure it out, pretty much. The mpg ratings with the Subie is impressive.
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Agreed, somehow I think of the diesel Subby that cant met the CARB is because they (engineers) are coping with the excessive emissions situations. If you want to lower the NOx level, is you have to increase fuel meterings by change the mapping (software in computer) but they will fail for little black puffs from tailpipes. And want to lean fuel meterings then will get bad NOx but I caught you for cat converter issues, I think they should do something up with cat converters (maybe they have troubles with tightest underbody spaces for addition cat converters) to control the NOx levels.
 
deafsmogtech said:
Turbocharged or supercharged used on both gasoline and diesel powered engines, will create NOx (nitrogen oxides) emission that the temperature in the combustion chambers (in cylinders of the engine), reach over 2,500 degree F and cause by too lean air/fuel mixture and high compression ratio. Diesel engines with turbos will produce good fuel mileage I think.

Diesel powered vehicles are more pollutes than the gasoline powered vehicles but I smogged a 2009 BMW X5d, Twin TC diesel powered, I saw the VECI says 5 cat converters I think ( I 'll find out tmw). I smell no diesel fume from tailpipe like little smell from newer gasoline powered vehicle. Wow.
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Hey, I forget to tell you that I saw 5 cat converters under the chassis last time and check the emission control system manual. The last 2 small cat converters behind the SCR (Selective Catalytic Reduction) cat converters, were not cat converters, dummy cats. I counted 3 cats not 5 cats

OOPS, the correct is 2009 BMW X5 X Drive 35d
 
deafsmogtech said:
Agreed, somehow I think of the diesel Subby that cant met the CARB is because they (engineers) are coping with the excessive emissions situations. If you want to lower the NOx level, is you have to increase fuel meterings by change the mapping (software in computer) but they will fail for little black puffs from tailpipes. And want to lean fuel meterings then will get bad NOx but I caught you for cat converter issues, I think they should do something up with cat converters (maybe they have troubles with tightest underbody spaces for addition cat converters) to control the NOx levels.
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Yeah. Most new transit buses have particulate filters installed to reduce dirty diesel exhaust, thus cleaner exhaust. I think they remove them and clean them then put them back for re use. Some transit buses have 4 cylinder turbo diesels and many of them use 6 inline diesels. One of the hybrid transit bus which is articulated, 60 ft long and has a cummins diesel hybrid 4 cylinder engine which they have in Seattle. It gets about 4.5-5 mpg average.
 
Twin Turbocharged diesel BMW X5

I smogged a 2009 BMW X5 X Drive 35d last summer with twin turbochargers and 3.0L diesel 6 In-line engine. This SUV was brought from PA state by the owner who moved in for a new job. I verified the VIN for origin of the manufacturer... built in USA (same as MBZ ML models)
 

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sequoias said:
Yeah. Most new transit buses have particulate filters installed to reduce dirty diesel exhaust, thus cleaner exhaust. I think they remove them and clean them then put them back for re use. Some transit buses have 4 cylinder turbo diesels and many of them use 6 inline diesels. One of the hybrid transit bus which is articulated, 60 ft long and has a cummins diesel hybrid 4 cylinder engine which they have in Seattle. It gets about 4.5-5 mpg average.
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Like name of DPF (Diesel Particulate Filter). Serviceable DPF? :dunno:
 
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