PPT Topics Mechanical Engineering

In this Page you can find PPT Topics Mechanical Engineering for the year 2013.  

Nano IC Engine

The Nano is a 0.1cc (that's less than 0.01 cuin) compression ignition engine - most frequently, if somewhat inaccurately, referred to as a "diesel". It was designed by Richard Gordon and the plans were included as a supplement with the British Magazine Model Engineer in the early 1990's. An idea of the size of the Nano is given by this picture. From backplate to drive washer is less than 1 inch. There are no exotic materials required. The crankcase is hacked from a solid cube of aluminium 3/4" on a side. The piston and contra piston are cast iron. The crankshaft and liner are any old steel from the scrap box...>>>>Read More

Liquid Nitrogen

Liquid Nitrogen is the cheapest, widely produced and most common cryogenic liquid. It is mass produced in air liquefaction plants. The liquefaction process is very simple in it normal, atmospheric air is passed through a dust precipitator and pre-cooled using conventional refrigeration techniques. It is then compressed inside large turbo pumps to about 100 atmospheres. Once the air has reached 100 atmospheres and has been cooled to room temperature it is allowed to expand rapidly through a nozzle into an insulted chamber.....>>>>Read More

Gasoline Direct Injection

In conventional engines, fuel and air are mixed outside the cylinder. This ensures waste between the mixing point and the cylinder, as well as imperfect injection timing. But in the GDI engine, petrol is injected directly into the cylinder with precise timing, eliminating waste and inefficiency. By operating in two modes, Ultra-Lean Combustion Mode and Superior Output Mode, the GDI engine delivers both unsurpassed fuel efficiency and superior power and torque. The GDI engine switches automatically between modes with no noticeable shift in performance. ..................>>>> Read More


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