Wankel engine
/ˈwæŋkəl/noun
- a rotary internal-combustion engine in which a curvilinear, triangular, eccentrically pivoted piston rotates in an elliptical chamber, forming three combustion spaces that vary in volume as it turns汪克尔发动机。
词源
1960s: named after Felix Wankel （1902-88）， German engineer.