I have seen drag racers or even some high hp street cars address water pump losses by switching to electric.
The hot rod suppliers have these for typical v8 applications for $300-400 as I recall. I believe the logic is that a mechanical waterpump set up to cope with hot day idle with the air...
http://www.nasa.gov/centers/dryden/history/pastprojects/SRA/epad.html
Boeing 787 will use EMA's
Boeing X-45 currently uses (only)EMA's.
They are gaining acceptance for certain applications.
For any new design, a cost, weight, reliability, maintainability comparison with hydraulics would be...
Sorry Pat,
However the Latent Heat of Vaporization for Water is 540 cal/gram
The Latent Heat of Vaporization for Alcohol is typically 204 cal/gram.
That is why I wanted to point out that adding alcohol to an SI engine water injection system will generally reduce it's effectiveness.
It will...
Water Injection was "popular" in the '70's when engine knock was a big problem because of low octane gasoline combined with lean factory mixture settings. Today, electronic engine controls have solved the problems.
Then you could buy water injection kits that worked off a provided engine...
Diesel Cycle engines are becoming increasingly popular in personal transportation due to the increased efficiency compared with Spark Ignited (~Otto Cycle) engines.
Gas turbines approximate the Rankine cycle, I believe.
All have there advantages and disadvantages.
The basic mechanical...
Yes, Otto describes constant volume heat addition regardless of 2 stroke, 4 stroke, wankel or other method of managing the working fluid. Practical SI engines approach the ideal Otto cycle.
Diesel cycle describes constant pressure heat addition, again regardless of engine mechanical approach.
