Complex sentence: Also excluded are conventional internal combustion engines in which heat is added to the working fluid by combustion of fuel within the working cylinder-continuous combustion types such as George Brayton's Ready Motor and gas turbines could be seen as borderline cases.
Split into simpler sentences: Also excluded are conventional internal combustion engines in which heat is added to the working fluid by combustion of fuel within the working cylinder. Continuous combustion types such as George Brayton's Ready Motor and gas turbines could be seen as borderline cases.