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Ford Superduty Trucks
The 2011 Ford Super Duty.
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<blockquote data-quote="STG" data-source="post: 8838025" data-attributes="member: 62237"><p>Diesel emissions regulation is relatively new. My 2005 has a catalytic converter and the engine management system is way more complex than the old 7.3 liter Powerstrokes.</p><p></p><p>As emissions regulastion tightened for 2008, a catalytic converter was not enough. Crappier ultra low sulfer fuel was introduced and Ford's 6.4 (International-Navistar) was equipped with a DPF. The diesel pariculate filter traps soot. When full, the ECU triggers a regeneration cycle wherein more fuel is fed into the engine, exhaust temps rise and the soot is literally burned out of the filter. This process is computer controlled, and can happen while you are towing 12,000 lbs, up a steep grade (it reduces power). The 6.4 get worse mileage than my 6.0. The early ones could shoot 6 foot flames out of the exhaust piper during regen. Ford stopped szelling the 6.4 for a week or two until the problem was fixed.</p><p></p><p>Nox emissions have been reduced 80% for 2011 and the Scorpion needs a DPF plus urea injection. Industrial urea (it's what you think it is) is injected into the exhaust stream.</p><p></p><p>Basically, diesel emissions controls are about where gasoline engine smog controls were in the 1970s: It's going to take w while to figure.</p></blockquote><p></p>
[QUOTE="STG, post: 8838025, member: 62237"] Diesel emissions regulation is relatively new. My 2005 has a catalytic converter and the engine management system is way more complex than the old 7.3 liter Powerstrokes. As emissions regulastion tightened for 2008, a catalytic converter was not enough. Crappier ultra low sulfer fuel was introduced and Ford's 6.4 (International-Navistar) was equipped with a DPF. The diesel pariculate filter traps soot. When full, the ECU triggers a regeneration cycle wherein more fuel is fed into the engine, exhaust temps rise and the soot is literally burned out of the filter. This process is computer controlled, and can happen while you are towing 12,000 lbs, up a steep grade (it reduces power). The 6.4 get worse mileage than my 6.0. The early ones could shoot 6 foot flames out of the exhaust piper during regen. Ford stopped szelling the 6.4 for a week or two until the problem was fixed. Nox emissions have been reduced 80% for 2011 and the Scorpion needs a DPF plus urea injection. Industrial urea (it's what you think it is) is injected into the exhaust stream. Basically, diesel emissions controls are about where gasoline engine smog controls were in the 1970s: It's going to take w while to figure. [/QUOTE]
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