RENESIS ROTARY ENGINE

RENESIS ROTARY ENGINE

INTRODUCTION TO RENESIS ROTARY ENGINE:

“RENESIS” stands for the "RE (rotary engine’s) GENESIS”. It is a new technical and design approach that has revolutionized the rotary engine by elegantly combining low fuel consumption and emissions with high performance.

The RENESIS engine was launched in the Mazda RX-8 this past spring in Japan and is poised to hit showrooms in Europe, North America and other key global markets later this year. It represents nothing less than a revolution in rotary engine technology, as it delivers smooth, high-revving performance, achieves acceptable fuel consumption and is able to meet some of the toughest emission standards in the world, including Euro Stage IV.

Mazda’s new RENESIS rotary engine, the power within the all-new Mazda RX-8, has been named "International Engine of the Year 2003." The prestigious award was presented today at Engine Expo 2003 in Stuttgart, Germany. Mazda's RENESIS, which also placed first in two additional categories, "Best New Engine of 2003" and "2.5-litre to 3.0-litre," can now rightly claim the title of "the world's greatest engine."

"In fact, 44 of the judges voted for this rotary engine to become International Engine of the Year 2003 – a new Awards record. Mazda can rightly state that it produces the finest automobile engine in the world."

"The judges are hugely impressed by the RX-8's smoothness, refinement, performance and eco-friendliness. Indeed, 44 of the judges voted for this rotary engine to become International Engine of the Year 2003 - a new Awards record. Mazda can rightly state that it produces the finest automobile engine in the world."

The starting point of development was the multi-side-port rotary engine, or MSP-E. This engine was first introduced in the concept sports car Mazda RX-01 at the Tokyo Motor Show in 1995. RENESIS represents the final, production version of the engine. The result of years of focused development, it will power the all-new Mazda RX-8.

James Watt, inventor of the rotary-motion steam engine, also took up research on a rotary-type internal combustion engine. For the last 150 years especially, inventors have proposed a number of designs for rotary engines.

As long ago as 1846, the geometrical structure of the working chamber of current rotary engine designs was planned and the concept of the first engine using an epitrochoid curve was configured. (The epitrochoid curve is the geometric pattern created by a point on one circle that is rolling without slippage on the outside of a larger circle.)

In 1924, when Felix Wankel, at the age of 22, began developing his rotary engine, nothing practical had yet been achieved. Wankel researched and analyzed possibilities of various types of rotary engines and reached the optimum shape of the trochoid housing. In partnership with motorcycle manufacturer NSU, Wankel’s years of research and development finally culminated in the first Wankel-type DKM rotary engine, in 1957. The DKM proved that the rotary engine was not just a dream.

But the structure was complicated, because the trochoid housing itself rotated, which made the rotary engine impractical. A year later, however, the KKM engine, with a fixed housing, was completed. This was the prototype of the current Wankel rotary engine and in November 1959, NSU officially announced the completion of the Wankel rotary engine.

Mazda’s president, Mr. Tsuneji Matsuda, immediately saw the great potential of the engine and personally negotiated a co-operation agreement with NSU. In 1963, Mazda’s newly organized RE (Rotary Engine) Research Department, under Mr. Kenichi Yamamoto, set out to develop the world’s first mass production rotary engine.

Further developments improved fuel economy by over 40 percent and lowered emissions substantially to meet increasingly stringent environmental regulations.

The RENESIS power train will be available in two variations: the High Power specification (177kW (231PS) @8200rpm with a 9000 rpm limit) and the Standard Power unit (141kW(192PS)@7000rpm with a 7500 rpm limit) for regular driving but with superb drivability.


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