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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 (NO x) emissions reduction technique used in petrol/gasoline, diesel engines and some hydrogen engines. [1]
A diesel engine that operates below the smoke limit produces a visible exhaust. In modern motor vehicle diesel engines, this condition is generally avoided by burning the fuel in excess air even at full load. The primary products of petroleum fuel combustion in air are carbon dioxide, water, and nitrogen.
1952 Shell Oil film showing the development of the diesel engine from 1877. The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is called a compression-ignition engine (CI engine).
Some newer diesel engines, namely those installed in combination vehicles, can also perform what is called a Parked Regeneration, where the engine increases RPM to around 1400 while parked, to increase the temperature of the exhaust. Diesel engines produce a variety of particles during the combustion of the fuel/air mix due to incomplete ...
Refiners such as HollyFrontier Corp and CVR Energy are exploring opportunities to produce renewable diesel to save money on less profitable refineries and offset compliance costs associated with U ...
For compression-ignition (i.e., diesel) engines, the most commonly used catalytic converter is the diesel oxidation catalyst (DOC). DOCs contain palladium or platinum supported on alumina. This catalyst converts particulate matter (PM), hydrocarbons, and carbon monoxide to carbon dioxide and water. These converters often operate at 90 percent ...
Doctors explain the safest and most effective way to blow your nose. Here, experts share how to remove mucus quickly and safely.
This article originally appeared on USA TODAY: Parents to protest at Maryland Cracker Barrel over students' treatment. Show comments. Advertisement. Advertisement. Holiday Shopping Guides.
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