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The EGR system routes a number of the exhaust gases (6 ? 10%) from the EGR valve, last on the Intake System, and ultimately within the combustion chamber. The exhaust gases are inert i.e. they cannot burn in the combustion chamber; also, the exhaust gases take up a number of the space which would preferably be taken with the intake air. This reduces the volume of intake air readily available for the combustion process during each Power Stroke; which in turn decreases the peak combustion temperatures. This brings about lower NOx emissions. Between June 25 and 26, 1876, a combined force of Lakota and Northern Cheyenne led the United States 7th Cavalry in to a battle near the Little Bighorn River in what was then the eastern fringe of the Montana Territory. The engagement is well known by several names: the Battle of Greasy Grass, the Battle of Little Big Horn, and Custer's Last Stand. Perhaps the most well-known action in the Indian Wars, it absolutely was a remarkable victory for Sitting Bull and his awesome forces. They defeated a column of seven hundred men led by George Armstrong Custer; five in the Seventh's companies were annihilated and Custer himself was killed in the engagement together with two of his brothers and a brother-in-law. Known as the battle that left no white survivors, Little Big Horn has inspired more than 1,000 pieces of art, including over 40 films. Here are four of the best... Hue and it is everyone is relaxed and simple to unwind here. This makes it probably the most attractive destinations in the nation. Also it is termed as a university town as it is home to both Hue College of Fine Art and Hue National school of Music and Dramatic Arts. The two were amalgamated in 1986 to create the Hue College of Arts. Hue is designed for nature lovers and those enthusiastic about art and history. Hue Art Gallery is definitely an international gallery featuring contemporary Vietnamese art: painting, sculpture, and Printmaking. Hue Art Gallery- a special gallery if you're enthusiastic about valuable artworks.