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dsalinas1939
Top Member
USA
1323 Posts |
 Posted - 11/06/2019 : 05:34:52 AM
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| ok guys wht is the correct wording for the scr system what i mean is in a 2014 c2 for example are they called the first one cloese to engine is that called a doc or a scr catalist filter and the second one is that an scr catalist filter or dpf |
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tigger2
Advanced Member
USA
470 Posts |
Posted - 11/06/2019 : 06:10:24 AM
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| In order DOC, DPF, long tube w/doser is decomposition reactor, and lastly the SCR. The NOX inlet sensor is right behind the turbo and the outlet is at the end of the SCR can. If your unit has one more in the outlet pipe that is the particulate sensor. |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 11/08/2019 : 04:20:38 AM
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| most of mine had the nox sensor behind turbo then the what i figured was the doc then the doser then what i been calling is the dpf then the outlet nox sensor and i thought the hole system was called the SCR systemami wrong on that? |
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bwest
Administrator
United States
3820 Posts |
Posted - 11/08/2019 : 06:31:41 AM
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| I'll tell you what I think, it's a mess. Who would have thought we'd be at this point only a few years ago. The machines on the road today are all going to be junk in 15 years. It's a waste of time, money and resources. |
Bryan |
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Thomasbus24
Administrator
USA
4544 Posts |
Posted - 11/08/2019 : 06:37:04 AM
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quote:
Originally posted by bwest
Who would have thought we'd be at this point only a few years ago. The machines on the road today are all going to be junk in 15 years.
If you had told me in 1999 "Hey, you're going to have Diesel Exhaust Fluid on your new bus!", I'd have filed that info along with blinker fluid and muffler bearings. And here we are.
I wish to correct the latter part of your statement. The machines on the road today are already junk. |
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dsalinas1939
Top Member
USA
1323 Posts |
Posted - 11/08/2019 : 07:51:47 AM
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| thats y we are going to gas buses the diesel buses are junk now the gas is much checper to maintane diesel fuel is more expense and the gas engine is not that much worse on fuel mileage the bolted on way to much "technology" on the diesel engine killed them |
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g0ttadrift
Advanced Member
USA
258 Posts |
Posted - 11/11/2019 : 1:17:25 PM
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| Couldn't agree more! While I agree that this extra emissions stuff is actually working, it isn't cost effective one bit. I have noticed way less fumes in the garage, but it corrodes, is cheaply built, and just a pain on the computer side of things. Tolerances are so tight that any little deviance and it throws a code. We had a NOx sensor go bad and the bus went into limp home mode; the bus is 4 years old. We bought the extended warranty for our emissions stuff so we had to tow the bus to the dealer. The sensor was so corroded inside the SCR, the dealer replaced the whole SCR system free of charge. I hate to see what happens when our warranty runs out. |
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what is the correct terminology
