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<p>[QUOTE="Brett_in_Sacto, post: 3311315, member: 71510"]DING DING DING!</p><p><br /></p><p>This just rang a bell.</p><p><br /></p><p>The "new" clean diesel technology requires a "DPF" or Diesel Particulate Filter on every diesel made in addition to the catalyst. It's in addition to the catalytic converter already on the car.</p><p><br /></p><p>This is a HUGE demand for materials.</p><p><br /></p><p>The process works by dumping the exhaust through the DPF - and it collects any soot that diesels are known for at low speeds. At highway speeds, the computer dumps additional diesel fuel and urea into the DPF to catalyze it and burn it off. </p><p><br /></p><p><br /></p><p>(Yeah, we have a special "blue" tank on our diesel car we fill with urea (pee <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" />) every 5000 miles, and it's mixed with fuel that isn't used to run the engine - but dumped onto the soot in a travelling "burn barrel" because this is somehow environmentally friendly?) <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie57" alt=":jawdrop:" unselectable="on" unselectable="on" /></p><p><br /></p><p>Sounded good on paper I guess.</p><p><br /></p><p>California I know just mandated these in the few years - and in fact, also mandated that all commercial trucks be retro-fitted (at the cost of billions to the businesses - who of course passed it on in higher prices to the consumers).</p><p><br /></p><p>My last diesel (Jetta TDI - a dieselgate victim) had a failure of the DPF and it was replaced under federal emissions warranty. It's an $1800 part and required as part of the EGR system.</p><p><br /></p><p>(side story / rant)</p><p>Also my wife's 328d bimmer now has one of these things, and it's in the shop for emissions warranty work - due to a complete backup and failure of the DPF/EGR system. It's a bunch of convoluted junk to solve a theoretical problem that society doesn't have. Similar to the efficiency of smog pumps in the early 80s. Slight reduction in emissions, huge reduction in performance that offsets any gains. (Anyone remember MTBE?)</p><p>(end side story / rant)</p><p><br /></p><p>So I can see a huge demand in the materials required to build these.</p><p><br /></p><p><a href="https://www.ttnews.com/articles/dpf-retrofits-growing-due-california-rule" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.ttnews.com/articles/dpf-retrofits-growing-due-california-rule" rel="nofollow">https://www.ttnews.com/articles/dpf-retrofits-growing-due-california-rule</a></p><p><br /></p><p>---California’s Air Resources Board estimates that the number of trucks in the state that need aftermarket DPFs will triple, from more than 35,000 in 2013 to 105,000 in 2015, plus about 10,000 trucks in neighboring states that will have to have retrofits.</p><p><br /></p><p>---Growth in retrofitting isn’t limited to California. Demand for the process is expected to grow as jurisdictions across the country seek to cut the amount of particulate matter, or soot, from diesel exhaust by mandating DPFs.[/QUOTE]</p><p><br /></p>
[QUOTE="Brett_in_Sacto, post: 3311315, member: 71510"]DING DING DING! This just rang a bell. The "new" clean diesel technology requires a "DPF" or Diesel Particulate Filter on every diesel made in addition to the catalyst. It's in addition to the catalytic converter already on the car. This is a HUGE demand for materials. The process works by dumping the exhaust through the DPF - and it collects any soot that diesels are known for at low speeds. At highway speeds, the computer dumps additional diesel fuel and urea into the DPF to catalyze it and burn it off. (Yeah, we have a special "blue" tank on our diesel car we fill with urea (pee ;)) every 5000 miles, and it's mixed with fuel that isn't used to run the engine - but dumped onto the soot in a travelling "burn barrel" because this is somehow environmentally friendly?) :jawdrop: Sounded good on paper I guess. California I know just mandated these in the few years - and in fact, also mandated that all commercial trucks be retro-fitted (at the cost of billions to the businesses - who of course passed it on in higher prices to the consumers). My last diesel (Jetta TDI - a dieselgate victim) had a failure of the DPF and it was replaced under federal emissions warranty. It's an $1800 part and required as part of the EGR system. (side story / rant) Also my wife's 328d bimmer now has one of these things, and it's in the shop for emissions warranty work - due to a complete backup and failure of the DPF/EGR system. It's a bunch of convoluted junk to solve a theoretical problem that society doesn't have. Similar to the efficiency of smog pumps in the early 80s. Slight reduction in emissions, huge reduction in performance that offsets any gains. (Anyone remember MTBE?) (end side story / rant) So I can see a huge demand in the materials required to build these. [url]https://www.ttnews.com/articles/dpf-retrofits-growing-due-california-rule[/url] ---California’s Air Resources Board estimates that the number of trucks in the state that need aftermarket DPFs will triple, from more than 35,000 in 2013 to 105,000 in 2015, plus about 10,000 trucks in neighboring states that will have to have retrofits. ---Growth in retrofitting isn’t limited to California. Demand for the process is expected to grow as jurisdictions across the country seek to cut the amount of particulate matter, or soot, from diesel exhaust by mandating DPFs.[/QUOTE]
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