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Michigan State University Receives $2.5M ARPA-E Award to Build Wave Disc Engine/Generator for Series Hybrid Applications

Green Car Congress

Wave rotor technology has been explored since 1906, although its first significant application was in 1940 by Brown Boveri Company (BBC, today ABB) which used it as a high pressure stage for a gas turbine locomotive engine. Mazda produced 150,000 Comprex diesel cars.

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LiquidPiston introduces latest X-series version of HEHC rotary engine; targeting 58% peak BTE, 2 hp/lb power density

Green Car Congress

Using a model calibrated to the data from the engine, LPI has shown that if it achieve sealing, heat transfer coefficients, and friction similar to today’s Mazda Wankel engine, it can achieve its efficiency goals. The company expects to transition to the X2 engine for development work probably around the end of the year.

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