Wankel Engine Work Details about Diesel Engine Information

Wankel Engine Work and Information and Figure.

The Wankel engine (rotary engine ) does not have piston strokes. It operates with same separation of phases as the four-stroke engine with the phase taking place in separate locations in the engine . In thermodynamics terms it follows the Otto engine cycle , so may be thought of as a "four-phase " engine . While it is true that three power strokes typically occur per rotor revolution due to the 3:1 revolution ratio of the rotor to the eccentric shaft, only one power stroke per shaft revolution actually occurs, this engine provides three powerlessness revolution per rotor giving it a greater-to-weight ratio than piston engines. This type of engine is most notably used in the current Mazda RX-8, the earlier RX-7, and other models.


Wankel Engine is an internal combustion engine. The Mazda Wankel engines (a type of rotary combustion engine ) are family of car engines derived from experiments in the early 1960s by flis Wankel , a German engineer . Over the years, displacement has been increased and turbocharging has been added.

Wanked engines can be classified by their geometric size in terms of radius ( rotor center to tip distance , also the median stator radius) and depth ( rotor thickness) , and offset ( crank throw ,eccentricity , also 1/4 the difference between stators major and minor axes. Displacement is 3√3radius·offset·depth, multiplied with the number of rotors (note that this only counts a single face of each rotor as the entire rotor's displacement, and is of course incorrect as there are three faces, equivalent to three piston faces, per rotor, i.e. equivalent to a three cylinder radial piston motor per rotor).

In auto racing, the displacement of a Wankel engine is usually doubled for classing purposes. This is of course a marketing ploy and wrong. Using only a single face per rotor instead of three results in the nominal displacement being a third of actual. For calculating taxes in Japan, the displacement of Wankel engines is defined as the equivalent of 1.5 times the nominal displacement, so the 1300 cc 13B engines are taxed as 1950 cc, whereas the actual displacement is 3900 cc.

When Wankel engines became commonplace in motor sport events, this created the problem of correcting the representation of each engine's displacement as provided by the manufacturer, for the benefit of competition. Rather than force the majority of participants (driving piston engine cars) to half their quoted displacement (likely resulting in confusion), most racing organizations simply decided to double the quoted displacement of Wankel engines.