I don’t know why we don’t do this with internal combustion engines (Gasoline or Diesel) all that heat generated by the motor, wasted, it could be used to generate more electricity…
I’m aware of some large ships that do that, using either a sterling engine or maybe even a steam engine to put waste engine heat to use.
I have heard of a 6-stroke engine. The idea is, intake compression power exhaust steam exhaust. The four strokes of the Otto or Diesel cycle happen, and then hot high pressure water is injected directly into the cylinder which flashes to steam and expands, pushing the piston, and then another exhaust stroke lets it out. This puts much of the waste heat out through the crankshaft rather than wasting it via radiator. It’s not without its problems though.
I don’t know why we don’t do this with internal combustion engines (Gasoline or Diesel) all that heat generated by the motor, wasted, it could be used to generate more electricity…
I’m aware of some large ships that do that, using either a sterling engine or maybe even a steam engine to put waste engine heat to use.
I have heard of a 6-stroke engine. The idea is, intake compression power exhaust steam exhaust. The four strokes of the Otto or Diesel cycle happen, and then hot high pressure water is injected directly into the cylinder which flashes to steam and expands, pushing the piston, and then another exhaust stroke lets it out. This puts much of the waste heat out through the crankshaft rather than wasting it via radiator. It’s not without its problems though.
We actually do. F1 engine’s have something called the MGU-H that recovers exhaust gas energy and turns it into electricity that can be used to recharge the hybrid system: https://www.racecar-engineering.com/articles/tech-explained-formula-1-mgu-h/
Technically any turbocharger is doing the same thing except it’s hooked up to a compressor for the intake air instead of a generator.
They don’t have that anymore as it was deemed not relevant enough for road use
It’s not quite the same thing, but Porsche has their eTurbo tech in road going cars now: https://www.porsche.com/stories/innovation/porsche-explained-porsche-t-hybrid/
They’re effectively capturing exhaust gas energy straight into a battery, just with a different system.
That’s pretty cool, didn’t know that. Thanks for the link!
There were some cars that used Stirling engine (Czech wiki cuz better picture) instead of internal combustion ones.