Does an internal combustion engine provide enough efficiency to still deliver mechanical power, if it is forced to liquify it's own exhaust gases by compression?
If gas containers would be added to the exhaust, the exhaust stroke of an four-stroke diesel or otto engine would theoretically compress the gas into the containers, and at some point it would liquify I guess. This way the engine would only consume air from the athmosphere but not release any exhaust to the athmosphere. The containers would fill up with liquified nitrogen, carbon dioxide, water and other combustion residuals.
How much power of the engine would be sacrified to this process? Would it still run?