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  • List of American truck manufacturers

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    This is a list of American truck manufacturers. American LaFrance ladder truck of Gainesville FD

  • Exhaust gas recirculation

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    EGR valve the top of box on top of the inlet manifold of a Saab H engine in a 1987 Saab 90 In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. This dilutes the O2 in the incoming air stream and provides gases inert to combustion to act as absorbents of combustion heat to reduce peak in-cylinder temperatures. NOx is produced in high temperature mixtures of atmospheric nitrogen and oxygen that occur in the combustion cylinder, and this usually occurs at cylinder peak pressure. Another primary benefit of external EGR valves on a spark ignition engine is an increase in efficiency, as charge dilution allows a larger throttle position and reduces associated pumping losses. In a gasoline engine, this inert exhaust displaces some amount of combustible charge in the cylinder, effectively reducing the quantity of charge available for combustion without affecting the air fuel ratio. In a diesel engine, the exhaust gas replaces some of the excess oxygen in the pre-combustion mixture.

  • White Motor Company

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    The White Motor Company was an American automobile, truck, bus and agricultural tractor manufacturer from 1900 until 1980. The company also produced bicycles, roller skates, automatic lathes, and sewing machines. Before World War II, the company was based in Cleveland, Ohio. White Diesel Engine Division in Springfield, Ohio, manufactured diesel engine generators, which powered U.S. military equipment and infrastructure, namely Army Nike and Air Force Bomarc launch complexes, and other guided missile installations and proving grounds, sections of SAGE and DEW Line stations, radars, combat direction centers and other ground facilities of the U.S. aerospace defense ring, such as the Texas Towers. During the Vietnam era, the company retained its position within the Top 100 Defense Contractors list (it ranked 87th in the Fiscal Year 1965, 77th in 1967, 73th in 1968, 89th in 1969).

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