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As most of my close friends know,I am very interested in car industry,not only appreciate the lovely design of the certain types of cars, but always would like to have the latest information about the latest cars,no matter from which company.
I am sure all of you have seen the new Mazda RX 8;Mazda have done brilliantly with it's new model, which doesn't mean the previous ones where awful,but this one is somehow different. they have used a different type of engine and different type of structure for the car which is nice. The new engine, RENESIS (Rotary Engine's Genesis) is a different type of engine that we are all familiar with.In order not to give you wrong infromation about the engine,I just quote the info from the Mazda official site.
In a traditional 4-stroke piston engine, the same cylinder, does four different jobs - intake, compression, combustion, exhaust.
A rotary engine, however, allows each of these four jobs to be done in a different section of its housing. The effect is not unlike having a separate cylinder to perform each of the four jobs.In a rotary engine there is no linear motion to convert. Pressure is contained in chambers created by different areas of the housing and convex faces of a triangular rotor. As combustion occurs the rotor is immediately made to turn thus reducing vibration and increasing potential engine revs. The resultant increase in efficiency also means that the engine can be much smaller for equivalent performance of a traditional piston engine.
But the basis of how it works as described by Mazda is:
The main component of the rotary engine is the triangular rotor, which orbits within a roughly oval housing (stator) in such a way that the rotor’s three apexes are in constant contact with the inner wall of the housing, forming three sealed volumes of gas, or combustion chambers. In effect, each of the rotor’s three faces acts like a piston. As the rotor rotates within the housing, the three chambers that it creates change size, producing a pumping action.In the centre of the rotor is a small externally toothed gear that is fixed to the housing. A larger internally toothed gear mates with this fixed gear, determining the path that the rotor will take through the housing.Because the rotor is mounted off-centre on the output shaft it turns the shaft with the same motion as a handle turns a crank, moving output shaft through three revolutions for every one of its own.
And don't forget the freestyle door system, which gives the car the sense of being both compact and also being convenient for the passengers.
