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Liquid piston engine design

Posted by novice 
Liquid piston engine design
November 16, 2019 01:25PM

"Recently, waste heat recovery system from automobile exhaust gas has attracted a lot of attention as one of the promising technology to improve fuel efficiency and to reduce carbon dioxide emission. In order to put this system into practice, we developed a novel liquid-piston steam engine which has large potential of high efficiency, high reliability and low cost. Thermal efficiency of 12.7 % is achieved at temperatures of Th = 270 °C and l = 80 °C. Finally, electrical output of waste heat recovery system with the liquid-piston steam engine is estimated to be 44 or 79Wh under NEDC or HWFET modes, respectively."

Edited 1 time(s). Last edit at 11/16/2019 01:25PM by novice.
Re: Liquid piston engine design
November 23, 2019 05:49PM
Back in the 80's I disclosed a turbine engine powered by steam generated by the exhaust manifold of a gas / diesel engine to recover wasted heat energy. The company refused to consider using it. This was Chrysler Corp. . I worked there in power plant development and was part of the Rankine cycle, electric car, hydrogen car and turbine car development groups. I will see if I can locate some of the tech papers that were generated while spending a couple years designing the system. Interesting read.
Re: Liquid piston engine design
November 29, 2019 09:04AM
Many technical papers on steam propulsion ( and many other technologies) development can be found in this library:

Theory and tests of two-phase turbines
Biphase turbine bottoming cycle for a diesel engine
Design study of a two-phase turbine bottoming cycle. Final report

Edited 1 time(s). Last edit at 11/29/2019 09:09AM by novice.
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