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Selective catalytic reduction. CATALYTIC REDUCTION. Selective catalytic reduction (SCR) means of converting nitrogen oxides, also referred to as NO. x with the aid of a catalyst into diatomic nitrogen (N. 2), and water (H. 2O). A reductant, typically anhydrous ammonia (NH. 3), aqueous ammonia (NH. 4OH), or a urea (CO (NH.
The maximum allowable temperature of the exhaust is determined by the materials in the turbine at the rear of the engine, so as the aircraft speeds up, the difference in intake and exhaust temperature that the engine can create, by burning fuel, decreases, as does the thrust. The higher thrust needed for supersonic speeds had to be regained by ...
A turboprop is a turbine engine that drives an aircraft propeller. [1] A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. [2] Air enters the intake and is compressed by the compressor. Fuel is then added to the compressed air in the combustor, where the fuel-air mixture then combusts.
The mechanism by which exhaust emissions are controlled depends on the method of injection and the point at which air enters the exhaust system, and has varied during the course of the development of the technology. The first systems injected air very close to the engine, either in the cylinder head's exhaust ports or in the exhaust manifold.
The Bajaj Pulsar is a range of motorcycles manufactured by Bajaj Auto in India. It was developed by the product engineering division of Bajaj Auto in association with Tokyo R&D, [1] and later with motorcycle designer Glynn Kerr. A variant of the bike, the Pulsar 200NS was launched in 2012, but it was suspended for some time (reintroduced in ...
Mac Pro. Mac Pro is a series of workstations and servers for professionals made by Apple Inc. since 2006. The Mac Pro, by some performance benchmarks, is the most powerful computer that Apple offers. It is one of four desktop computers in the current Mac lineup, sitting above the Mac Mini, iMac and Mac Studio.
Akrapovič exhaust on a Koenigsegg Jesko. The company partners with motorcycle manufacturers such as Yamaha, [12] who offer Akrapovič cans as optional factory- or dealer-fit equipment on the R1, [13] and MT-01; [14] and BMW Motorrad who offer an Akrapovič can as standard on the R nineT, S1000R, F800R, [15] HP2 Megamoto, [16] and as an option on most other bikes in their range. [17]
Shock diamonds are the bright areas seen in the exhaust of this statically mounted Pratt & Whitney J58 engine on full afterburner.. Shock diamonds (also known as Mach diamonds or thrust diamonds) are a formation of standing wave patterns that appear in the supersonic exhaust plume of an aerospace propulsion system, such as a supersonic jet engine, rocket, ramjet, or scramjet, when it is ...