{"id":520,"date":"2017-02-28T14:32:40","date_gmt":"2017-02-28T14:32:40","guid":{"rendered":"https:\/\/blog.normagroup.com\/?p=520\/"},"modified":"2018-04-17T09:21:16","modified_gmt":"2018-04-17T09:21:16","slug":"emission-scr-technology","status":"publish","type":"post","link":"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/","title":{"rendered":"Clean Emission with SCR Technology"},"content":{"rendered":"

How can we really bring down exhaust gas emissions? The automotive industry isn\u2019t the only one searching for an answer to this question, but also car drivers, politicians and environmental groups. The technology for a clean diesel engine already exists. It only needs to be effectively put to use.<\/p>\n

<\/p>\n

The prestige of the diesel engine has taken quite a blow of late. First, the EU Commission warned many German cities that they were not meeting nitric oxide limits. Then came the emissions scandal. Alongside it, the government has pushed manufacturers for legitimate responses, setting increasingly stringent exhaust gas emissions standards such as Euro 6 in Europe and EPA 15 in Canada, Mexico and the US.<\/p>\n

AdBlue<\/h2>\n

\n

Depending on the vehicle model, an AdBlue tank holds between 10 and 30 liters.<\/p>\n

AdBlue<\/h2>\n

\n

At a rate of diesel consumption of 6 liters per 100 kilometers, 0.125 liters of AdBlue would be added. In an average SUV, the AdBlue tank lasts 10,000 to 15,000 kilometers.<\/p>\n

AdBlue<\/h2>\n

\n

Several thousand kilometers before it is empty, a warning is displayed, however. It should be heeded, since it isn\u2019t possible to start a vehicle with an empty AdBlue tank.<\/p>\n

\n

AdBlue<\/h2>\n

An overview of gas stations in Europe and North America that offer AdBlue can be found at:<\/p>\n

\t\t\t
\n\t\t\t\t\t\tMore
\n\t\t\t\t\t<\/a>
\n\t\t\t\t\n\n<\/svg>
\n<\/a>
\n\t\t\t\t\n\n<\/svg>
\n<\/a><\/p>\n

Car makers have two fronts to advance. First, in the engine: to make fuel combustion cleaner. And secondly, in the after-treatment of fumes, known as exhaust gas purification. In addition to the usual soot particle filters, catalytic converters also help with this process, but in larger vehicles, even this is no longer sufficient.<\/p>\n

Urea solutions have the most powerful effect: they reduce nitric oxides in diesel engines by up to 90 percent. The additive is better known under its regional brand names AdBlue, Diesel Exhaust Fluid (DEF), ARLA and AUS32. This liquid, consisting of one third urea and two thirds demineralized water, is injected into the exhaust system by a high-pressure injector.<\/p>\n

\t\t\t\t\"Urea<\/p>\n

This results in selective catalytic reduction (SCR) \u2013 or exhaust gas purification. The toxic nitric oxides and aggressive ammonia are split into the harmless components nitrogen and water. Hence the purifying element to the name of the process.<\/p>\n

For this, the urea solutions must be heated. Since the freezing point of AdBlue is about -11 degrees Celsius, additional heating is needed, especially in countries with temperate climates. How quickly AdBlue is defrosted and thus can effectively reduce exhaust gas is therefore regulated by law.<\/p>\n

\t\t\t\"\"\t\t\t<\/p>\n

Electrically heated urea tubes<\/h2>\n

The line is electrically heated by an internal wire so that the frozen urea solution thaws within a very short time to be injected into the exhaust system even at the lowest outside temperatures.<\/p>\n

\"Electrically<\/a>
\n\t\t\t\"\"\t\t\t<\/p>\n

Coolant heated urea pipes<\/h2>\n

The urea injection lines and the coolant system are enclosed together in a corrugated plastic tube. Heat released by the coolant is transferred to the urea solution as a result.<\/p>\n

\"Coolant<\/a>\t\t\t<\/p>\n

The heat needs to be supplied by the pipes carrying the urea solution. This works either by electrically generated heat or by naturally occurring engine heat.<\/p>\n

The first method ensures that the additive is heated quickly and precisely. The second method takes stress off of the electrical wiring of the vehicle, relieving the generator and battery. With either method, the urea tubes are made of lightweight plastics.<\/p>\n

By the way, urea solutions have nothing to do with urine. Except in vehicles, it is primarily used as a fertilizer. The substance is a safe storage form of the active substance ammonia. The chemical is completely safe for humans and the environment.<\/p>\n","protected":false},"excerpt":{"rendered":"

How can we really bring down exhaust gas emissions? The automotive industry isn\u2019t the only one searching for an answer to this question, but also car drivers, politicians and environmental groups. The technology for a clean diesel engine already exists. It only needs to be effectively put to use.<\/p>\n","protected":false},"author":4,"featured_media":1268,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9],"tags":[32,76,65,117],"class_list":["post-520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-emissions","tag-mobility","tag-technology","tag-urea-lines"],"acf":[],"yoast_head":"\nClean Emission with SCR Technology - NORMA Group Blog<\/title>\n<meta name=\"description\" content=\"How can we really bring down exhaust gas emissions? The technology for a clean diesel engine already exists. 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It only needs to be effectively put to use.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/\" \/>\n<meta property=\"og:site_name\" content=\"NORMA Group Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/normagroup\" \/>\n<meta property=\"article:published_time\" content=\"2017-02-28T14:32:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-04-17T09:21:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.normagroup.com\/wp-content\/uploads\/2017\/02\/Diesel-Kraftstoff-an-einer-Tankstelle-e1502267403953.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"5759\" \/>\n\t<meta property=\"og:image:height\" content=\"2476\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Markus Bulgrin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@MarkusBulgrin\" \/>\n<meta name=\"twitter:site\" content=\"@norma_group\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Markus Bulgrin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/\"},\"author\":{\"name\":\"Markus Bulgrin\",\"@id\":\"https:\/\/blog.normagroup.com\/#\/schema\/person\/5d1230c8711cc5eff85f872f355e9313\"},\"headline\":\"Clean Emission with SCR Technology\",\"datePublished\":\"2017-02-28T14:32:40+00:00\",\"dateModified\":\"2018-04-17T09:21:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/\"},\"wordCount\":585,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\/\/blog.normagroup.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.normagroup.com\/wp-content\/uploads\/2017\/02\/Diesel-Kraftstoff-an-einer-Tankstelle-e1502267403953.jpg\",\"keywords\":[\"Emissions\",\"Mobility\",\"Technology\",\"Urea Lines\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/\",\"url\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/\",\"name\":\"Clean Emission with SCR Technology - NORMA Group Blog\",\"isPartOf\":{\"@id\":\"https:\/\/blog.normagroup.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blog.normagroup.com\/en\/emission-scr-technology\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.normagroup.com\/wp-content\/uploads\/2017\/02\/Diesel-Kraftstoff-an-einer-Tankstelle-e1502267403953.jpg\",\"datePublished\":\"2017-02-28T14:32:40+00:00\",\"dateModified\":\"2018-04-17T09:21:16+00:00\",\"description\":\"How can we really bring down exhaust gas emissions? 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