Recent content by onargaroberts

Thanks for picking up this "dead" question of mine. It didn't seem that I was able to keep responses focused on the essence of my question. Thanks for doing so. The "thought experiment" with extreme conditions is always a helpful tool and that is again true in this case.

I appreciate that there are important and measurable friction losses but I don't think they are that great. According to an SAE paper on friction losses a test with a Honda four cylinder engine quantified the friction losses at 10% of the developed power. And I'll add that the developed power...

Thanks, but it is the "thermodynamic sense" that I'm most interested in (and where I need the most help). Without question, one combustion cycle happens too fast to have a material impact on heat transfer to the cylinder wall and cooling system. But, the cycle happens repeatedly and frequently...

Will a four cycle, internal combustion engine have greater thermal efficiency with a relatively cool jacket water temperature, say 160 degrees F, or a relatively hot water jacket temperature, say 190 degrees F? These specific numbers are only important in as much as they are commonly available...