Hey all, did a search but did not find anything.

Do all the current trucks, Hilux, Dmax etc have EGR? How about DPF's?

Curious if the trucks here suffer from the emission related issues that our light duty diesels in the US do.

Emissions standards are not discussed much in LOS. The government made commitments in the past to comply with Euro 4 but so far the enforcement of emission standards is so weak, the actual standard adopted does not matter much.

Diesel sulphur content was reduced from 350 to 50 ppm in Jan 2012 but that is still above the ULSD level in the US. Thailand adopted this so much later than western countries, most related problems appear to have been dealt with.

Some heavy trucks still claim to meet Euro 3 and some pick up brochures mention Euro 4. Most of the truck diesels use EGR but the 2011 / 2012 model light and heavy trucks we have do not have DPF. 2013 models may be different but I doubt it. As with the low sulphur fuel, issues with EGR have been dealt with before becoming common here. In future DPF's may be an issue in places like BKK but no doubt there will be local mods developed.

but so far the enforcement of emission standards is so weak,

Do you live in Bangkok? Have you notices by any chance that Bangkok buses as a rule do not emit black smoke like they used to. Please don't fall into the economic imperialistic view Thailand is all bad and that Thai authorities do not enforce the law. They do just in their way not everyone else's way.

I also fail to see what Thai emission standards have to do with problems with US emission standards.

Thankfully I don't live in BKK and I still see plenty of buses and trucks that would not pass the most basic emission test.

I am not saying Thailand is all bad, the more pragmatic Thai approach is better for vehicle users but not as good for the environment. Depends which side of the fence you are on.

The OP appears to be referring to problems on some US vehicles with Low Sulphur diesel, EGR and DPF, not the emission standards themselves. Euro 4 and 5 vehicles had similar problems. Thailand is adopting European emission standards but with a delay of about a decade.

The buses that don’t smoke have been converted to LP or CNG, which has nothing to do with government regulations and everything to do with economics

Thanks for the info Jitar! I was just curious really, the commonrail stuff runs pretty clean even without egr and dpf I think. Was mainly just wondering if the local trucks suffered from the issues many of the US ones do.

i am sure that the local pickups that they sell comply with the local thai standards on emission.

not sure if that would equal to comply to standards of the west world.

however, does it really matter?

if someone wants a pickup, can buy what they sell here.

if someone is very emission averse, they sell bicycles readily thoughout thailand.

period.

What emissions standards??? All those Euro 3 stickers on Hino and Isuzu trucks are for cabin comfort. Euro 4 means full leather, climate control and surround sound!

The OP appears to be referring to problems on some US vehicles with Low Sulphur diesel, EGR and DPF, not the emission standards themselves.

Is this similar to the lack of lead problem when petrol changed to unleaded? I think EU has done this with Adblue (spelling).

Emissions standards are not discussed much in LOS. The government made commitments in the past to comply with Euro 4 but so far the enforcement of emission standards is so weak, the actual standard adopted does not matter much.

Diesel sulphur content was reduced from 350 to 50 ppm in Jan 2012 but that is still above the ULSD level in the US. Thailand adopted this so much later than western countries, most related problems appear to have been dealt with.

Some heavy trucks still claim to meet Euro 3 and some pick up brochures mention Euro 4. Most of the truck diesels use EGR but the 2011 / 2012 model light and heavy trucks we have do not have DPF. 2013 models may be different but I doubt it. As with the low sulphur fuel, issues with EGR have been dealt with before becoming common here. In future DPF's may be an issue in places like BKK but no doubt there will be local mods developed.

Thailand currently uses a modified form of the Euro4 emmissions standard, sans the DPF as being required.

In answer to the OP, most diesel pickups in Thailand emit around 200gm +/- 20gm CO2

but so far the enforcement of emission standards is so weak,

Do you live in Bangkok? Have you notices by any chance that Bangkok buses as a rule do not emit black smoke like they used to. Please don't fall into the economic imperialistic view Thailand is all bad and that Thai authorities do not enforce the law. They do just in their way not everyone else's way.

I also fail to see what Thai emission standards have to do with problems with US emission standards.

I must admit the air in Bangkok feels a lot cleaner than say 25 years ago. If I have a cold and blow my nose the result is not black anymore as well

Emissions standards are not discussed much in LOS. The government made commitments in the past to comply with Euro 4 but so far the enforcement of emission standards is so weak, the actual standard adopted does not matter much.

Diesel sulphur content was reduced from 350 to 50 ppm in Jan 2012 but that is still above the ULSD level in the US. Thailand adopted this so much later than western countries, most related problems appear to have been dealt with.

Some heavy trucks still claim to meet Euro 3 and some pick up brochures mention Euro 4. Most of the truck diesels use EGR but the 2011 / 2012 model light and heavy trucks we have do not have DPF. 2013 models may be different but I doubt it. As with the low sulphur fuel, issues with EGR have been dealt with before becoming common here. In future DPF's may be an issue in places like BKK but no doubt there will be local mods developed.

Thailand currently uses a modified form of the Euro4 emmissions standard, sans the DPF as being required.

In answer to the OP, most diesel pickups in Thailand emit around 200gm +/- 20gm CO2

IMHO, do you know the reason for Thailand adopting the modified version of Euro 4? I wonder if a) the government thought the DPF's would add too much cost to cheaper pickups or manufacturers thought the DPF's would have too many problems in Thai traffic?

Is the Modified standard a transitional thing for a few years, presumably to be replaced by tighter emission limits in future?

The OP appears to be referring to problems on some US vehicles with Low Sulphur diesel, EGR and DPF, not the emission standards themselves.

Is this similar to the lack of lead problem when petrol changed to unleaded? I think EU has done this with Adblue (spelling).

Adblue is a trade name for urea used in SCR systems to reduce NOx emission. SCR is less common outside Europe and is supposed to reduce issues with DPF's not regenerating (cleaning) properly when mostly operating at low speed and temperature.

Emissions standards are not discussed much in LOS. The government made commitments in the past to comply with Euro 4 but so far the enforcement of emission standards is so weak, the actual standard adopted does not matter much.

Diesel sulphur content was reduced from 350 to 50 ppm in Jan 2012 but that is still above the ULSD level in the US. Thailand adopted this so much later than western countries, most related problems appear to have been dealt with.

Some heavy trucks still claim to meet Euro 3 and some pick up brochures mention Euro 4. Most of the truck diesels use EGR but the 2011 / 2012 model light and heavy trucks we have do not have DPF. 2013 models may be different but I doubt it. As with the low sulphur fuel, issues with EGR have been dealt with before becoming common here. In future DPF's may be an issue in places like BKK but no doubt there will be local mods developed.

Thailand currently uses a modified form of the Euro4 emmissions standard, sans the DPF as being required.

In answer to the OP, most diesel pickups in Thailand emit around 200gm +/- 20gm CO2

IMHO, do you know the reason for Thailand adopting the modified version of Euro 4? I wonder if a) the government thought the DPF's would add too much cost to cheaper pickups or manufacturers thought the DPF's would have too many problems in Thai traffic?

Is the Modified standard a transitional thing for a few years, presumably to be replaced by tighter emission limits in future?

The primary reason given is because of differences in climate and economy. Apparently there are things in the European version of Euro4 spec that just don't make sense in a warmer ASEAN climate, and the rest was just about making it cheaper to implement - while still improving over the ASEAN version of Euro3.

AFAIK, nothing transitional about it - the next step is said to be Euro5 (again, expected to be modified for ASEAN) - no dates have been announced, but it's widely expected to be introduced in 2016.