Aerodynamics is the study of how air travels over the surface of an object.You can notice aerodynamic yourself on a windy day; it is easier to move against the wind if you change your body profile so that less of you is exposed to the wind.By doing this you are making yourself into a more aerodynamic shape.The same principle applies to vehicles , although they induce the wind themselves by travelling at speed.
Turbochargers were originally known as turbo superchargers when all forced induction devices were classified as superchargers. Nowadays the term “supercharger” is usually applied to only mechanically driven forced induction devices.The key difference between a turbocharger and a conventional supercharger is that the latter is mechanically driven from the engine, often from a belt connected to the crankshaft, whereas a turbocharger is powered by a turbine that is driven by the engine’s exhaust gas. Compared to a mechanically-driven supercharger, turbochargers tend to be more efficient, but less responsive. Twincharger refers to an engine with both a supercharger and a turbocharger.
Internal combustion Engine can be cooled by air-cooling or water-cooling method.Here we are mainly focusing on water cooling system.Main parts of water cooling system are :-
The function of the radiator is to cool down the hot water from engine. It consists of a large number of vertical tubes through which water flows down. The temperature of water is reduced appreciably by drawing the air through spaces between the radiator tubes with the help of fan, which is mounted on the impeller spindle driven by a suitable pulley arrangement.
02) Fan and Pump:-
The pump increases the velocity of water through the system. The fan, which draws air through the radiator spaces, is usually mounted on the same spindle as that of the impeller having widely spaced vanes to facilitate the flow of water through it is case of failure.
A thermostat fitted in such a manner that it prevents the flow of water below certain temperature, from engine to the radiator. The “Bellows Type” thermostat is generally used.Generally, a thermostat does not allow the water to flow below 70 degree centigrade.
It takes a special kind of magic to make an electric one-wheeled motorcycle not terrifying to ride, and Ryno Motors has pulled it off. The microcycle, which has a single 25-inch motorcycle tire and reaches speeds up to 10 mph, uses a combination of gyroscope sensors and accelerometers to balance itself. That, combined with a strategic weight distribution and an intuitive acceleration and braking method, makes this motorized unicycle from the future actually feel … safe.My daughter drew a sketch of a one-wheel motorcycle she saw in a video game and asked me to build it,” says Ryno CEO Chris Hoffmann. “She was 13 years old.”
* The engine with lowest vibration level 0.01 – 0.1 %
* variable compression ratio is possible
* multifuel capable
* Compact small dimensions
* 80% thermal efficiency
Duke Engines are in an advanced stage of developing a unique high-speed, valve-less 5 cylinder, 3 injector axial internal combustion engine with zero first-order vibration, significantly reduced size and weight, very high power density and the ability to run on multiple fuels and bio-fuels. The Duke engine is suited for many uses including marine, military, automobile, light aircraft and range extender applications.
These gears are used in racing cars where high power transmission is required and bearing size can not be increased after certain limit