[Geezer]

All good points!

I suppose the only way to decide what's best is to try to quantify all the energy transfers and see what yields the highest efficiency. Then we'd have to run a bunch of experiments to try to prove it!

[Azmio]

hey guys, try this, i published my research work done so far for the hybrid diesel and steam engine in these papers; SAE 2009-01-2808 and SAE 2009-32-0047. There are many similarities with the earlier work by the US Army tank command 40 years ago. Today, I revive the concept by improving almost everything from the earlier concept.

[Geezer]

hey guys, try this, i published my research work done so far for the hybrid diesel and steam engine in these papers; SAE 2009-01-2808 and SAE 2009-32-0047. There are many similarities with the earlier work by the US Army tank command 40 years ago. Today, I revive the concept by improving almost everything from the earlier concept.

Great! How did you overcome the pathetic inefficiency of steam engines?

[Azmio]

Geezer,

Sorry for not replying earlier. The problem with steam engine is that the steam temperature is too low thus the enthalpy is also low. It's just impossible for the steam temperature to shoot up because it is often vaporize above its boiling temperature.

Now for a conventional gasoline or spark ignition engine, the problem is uniquely different. The release of heat from fuel is just too abrupt and too intense for air to be heated up and expand. As a result, you will get a lot of heat wasted to the exhaust gas and coolant.

My proposed concept is simple, why not marry the two?

[peppercorn (OP)]

Now for a conventional gasoline or spark ignition engine, the problem is uniquely different. The release of heat from fuel is just too abrupt and too intense for air to be heated up and expand. As a result, you will get a lot of heat wasted to the exhaust gas and coolant.

If your not worried about the 'abrupt and intense' qualities of a vehicle engine (ie. responsive acceleration), then why not go all the way back to steam only.

http://www.cyclonepower.com/works.html