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ReprintsNext-gen Mazda rotary needs more work
Mark Rechtin
Automotive News
October 21, 2009 - 12:01 am ET
TOKYO -- The next-generation rotary engine from Mazda, unveiled at the 2007 Tokyo show under the code-name “16X,” does not meet sufficient performance and fuel economy guidelines the automaker requires for a production model. Seita Kanai, Mazda Motor head of R&D, said work continues to be done to improve the rotary’s thirsty nature. “The 16X demonstrated the possibility, but that performance is not good enough. We are doing r&d which will incorporate more new technology,” Kanai said. The code name refers to the increase in the current engine’s displacement, from the current 1.3 liters to 1.6 liters. The 16X was to be finished in time for the next-generation RX-8 sports car, to be launched in 2012 or so. When unveiled in 2007, the 16X enlarged the elliptical shape of the combustion chamber, and enlarged the rotor’s eccentric center stroke. Mazda also planned direct injection fuel delivery in a rotary engine for the first time. However, Mazda also noted that the changed shape would affect the combustion process of the air-fuel mixture. Kanai declined to say whether it’s back to the drawing board for the 16X. “The 16X is more a profile of a rotary still in our concept stage,” Kanai said. “It needs more evolution.” |
You can reach Mark Rechtin at mrechtin@crain.com.
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