Could we build a four-stroke engine that runs on the exhaust heat of another engine? My idea is to have a four stroke engine **** in the exhaust from another running engine, instead of fresh air. Compress that hot exhaust on it’s compression stroke, then at TDC inject a burst of steam, through some kind of injector. The boiler water could be preheated by the cooling system of the first running engine. Does this sound at all feasible?
top of page
To see this working, head to your live site.
Comments (5)
Thanks for the reply! I’m curious how the combined efficiency would be less? Wouldn’t the efficiency of the system go up as whole since more of the fuel energy is being extracted?