CODAS (Combined Diesel-electric and Steam)
This is a Diesel engine with a boiler to extract heat from the cylinder and the exhaust gases, generating steam at a rate proportional to the fuel flow. The steam is separately injected into the cylinder close to top dead center, actively modifying combustion and afterburning. The steam to fuel mass ratio is preferably 1:1 to 3:1 and the steam temperature and pressure are as high as engine materials permit. This system, adaptable to large Diesel engines, strongly reduces fuel consumption and emissions.
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