The problem with combined cycle is that the Rankine cycle is often used as a bottoming cycle to recover otherwise rejected heat.
It works great. But its going to be big. Classical boiler design dictates that for each horsepower you want to extract you need 10 to 12 square feet of heat exchanger.
There has only been one successful on road combined cycle engine setup and it is called the turbodiesel. The bottom cycle here is a brayton cycle.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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