High Efficiency Combustion and Electric Generation in Vehicles Using Exhaust Heat
Researchers at Purdue University have developed the Stirlocharger, a quadruple functionality design for automotive internal combustion engines composed of a thermal energy harvester from engine exhaust heat, an intake air compressor pump for high efficiency thermodynamic cycle, a speed amplifier, and power split for electric energy storage. The Stirlocharger upholds the intake pressure greater than the exhaust pressure to generate a positive pump work for high efficiency of internal combustion engines. Without the turbine blocking the exhaust manifold, the exhaust gases can flow unrestricted without extra back pressure that is typically caused by the forced induction turbocharger and less residual will remain in the combustion chamber. These effects maximize the mechanical and combustion efficiency while reducing NOx emissions. In addition, the key differentiator that makes the Stirlocharger unique is its capability to convert excess heat energy into electrical energy while the vehicle is in a low power state without affecting high demand performance. The Stirlocharger could be equipped in vehicle powertrains and be produced to improve the efficiency and make the vehicle powertrain greener.
Split power functionality Reduced NOx Converts excess heat energy into electric energy
Automobile industryAutomobile accessories
Henry ZhangPurdue Mechanical Engineering TechnologyCenter for Technology Development
United States
None
USA
