No, your statement is BULL****. I clearly understand duty cycle and have provided two examples of many that show auto engines can easily run at full load for extended periods.
Please cite your references for marine engines being designed for 50-66% of duty cycle, that is bull****.
As for the rest of it, every day auto engines are abused far, far more than any aero engine. Cold soak? Big deal, millions do it daily. Full throttle from dead cold? Again, millions do it. AND they do it with lack of oil changes or any maintenance whatsoever in many cases. Not like a fragile aero engine which will **** itself if you don't change the oil after 100 hours.
Of course, of modern aero engines were liquid cooled, we wouldn't have to worry so much about their "advanced, optimised" design being shock cooled or running at full power after a short taxi and run up....
You clearly do not understand marine engines at all. They are under a constant load, just as an aero engine is. Yes, even outboards.
As I said before, we have what we have because the market doesn't justify expenditure for new technology, nor does the regulatory system.
Last edited by Typhoon650; 30th Jul 2013 at 23:08.