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**eladiopsislab** · 09-03-2009, 02:56 AM

ORLY?

http://peswiki.com/index.php/Diesel

It's not nescesarily the AMOUNT of emmissions that are rleased,the composition is a factor too.

Well thats what I said, as the article says

Diesel powered cars generally have about a 40% better mileage than equivalent gasoline engines [1] and produce only about 69% of the greenhouse gases. This greater fuel economy is due to the higher per-liter energy content of diesel fuel and also to the intrinsic efficiency of the diesel engine. While diesel's 15% higher volumetric energy density results in 15% higher greenhouse gas emissions per liter compared to gasoline, the 40% better fuel economy achieved by modern diesel-engined automobiles offsets the higher-per-liter emissions of greenhouse gases, resulting in lower CO2 emission per kilometer (69% of that of gasoline). [2][3] For this reason, proponents of diesel powered automobiles often cite this advantage as a way to reduce Greenhouse gas emissions.
On the other hand, diesel fuel often contains higher quantities of sulfur. European emission standards and preferential taxation have forced oil refineries to dramatically reduce the level of sulfur in diesel fuels. In contrast, the United States has long had "dirtier" diesel, although more stringent emission standards have been adopted with the transition to ultra-low sulfur diesel (ULSD) starting in 2006 and becoming mandatory on June 1, 2010 (see also diesel exhaust). U.S. diesel fuel typically also has a lower cetane number (a measure of ignition quality) than European diesel, resulting in worse cold weather performance and some increase in emissions. High levels of sulfur in diesel are harmful for the environment because they prevent the use of catalytic diesel particulate filters to control diesel particulate emissions, as well as more advanced technologies, such as nitrogen oxide (NOx) adsorbers (still under development), to reduce emissions. However, lowering sulfur also reduces the lubricity of the fuel, meaning that additives must be put into the fuel to help lubricate engines. Biodiesel is an effective lubricant. European Diesel is kinda "clean" and allows the usage of particulate filters (which all german car makers and most others offer). Today's Diesel engines from european or japanese auto makers dont have much in common with what you know from your trucks or 18 wheelers.

09-03-2009, 02:56 AM	#92
eladiopsislab Join Date Oct 2005 Posts 611 Senior Member	ORLY? http://peswiki.com/index.php/Diesel It's not nescesarily the AMOUNT of emmissions that are rleased,the composition is a factor too. Well thats what I said, as the article says Diesel powered cars generally have about a 40% better mileage than equivalent gasoline engines [1] and produce only about 69% of the greenhouse gases. This greater fuel economy is due to the higher per-liter energy content of diesel fuel and also to the intrinsic efficiency of the diesel engine. While diesel's 15% higher volumetric energy density results in 15% higher greenhouse gas emissions per liter compared to gasoline, the 40% better fuel economy achieved by modern diesel-engined automobiles offsets the higher-per-liter emissions of greenhouse gases, resulting in lower CO2 emission per kilometer (69% of that of gasoline). [2][3] For this reason, proponents of diesel powered automobiles often cite this advantage as a way to reduce Greenhouse gas emissions. On the other hand, diesel fuel often contains higher quantities of sulfur. European emission standards and preferential taxation have forced oil refineries to dramatically reduce the level of sulfur in diesel fuels. In contrast, the United States has long had "dirtier" diesel, although more stringent emission standards have been adopted with the transition to ultra-low sulfur diesel (ULSD) starting in 2006 and becoming mandatory on June 1, 2010 (see also diesel exhaust). U.S. diesel fuel typically also has a lower cetane number (a measure of ignition quality) than European diesel, resulting in worse cold weather performance and some increase in emissions. High levels of sulfur in diesel are harmful for the environment because they prevent the use of catalytic diesel particulate filters to control diesel particulate emissions, as well as more advanced technologies, such as nitrogen oxide (NOx) adsorbers (still under development), to reduce emissions. However, lowering sulfur also reduces the lubricity of the fuel, meaning that additives must be put into the fuel to help lubricate engines. Biodiesel is an effective lubricant. European Diesel is kinda "clean" and allows the usage of particulate filters (which all german car makers and most others offer). Today's Diesel engines from european or japanese auto makers dont have much in common with what you know from your trucks or 18 wheelers.
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