It has been related to me that Keith Duckworth had a saying. The only people who write about Jerk are Jerks.
Not saying it is right or wrong, just saying.
Has 250F been tested/verified as a trustworthy number? I normally work with air cooled two strokes, and .050" from the combustion chamber/cylinder near the head interface I am used to much higher temps. I would expect to see 200F at low load operation with forced air cooling and up to 400F (on...
ivymike,
Your description of my restraints is correct. It seems as though the area acts as a gas containment area to keep the high pressure differential on the top ring and as a piston to liner contact area in most designs. I feel as though I am safe in presenting the design to our piston...
I have preheated intake air to over 100°C in an exhaustive study of a single two-stroke. The result was a drastic decrease in fuel consumption, but it was a crude engine to begin with and all the heated air was doing was assisting in fuel evaporation and reducing pre-ignition droplet size (it...
The piston, like all of our units, is for R&D purposes, not a production ready part. The new design we want to try out requires that a uninterrupted space of ~14mm is left about 12mm below the piston crown. Using "standard" diesel ring placement this will only allow for one ring, however, we...
Thank you, those terms are coming up with a few items, it will take some time to narrow down what I need.
For all intensive purposes the piston is a modern diesel engine piston (bore of ~80mm). I work in combustion, so the top of the piston is my area, but due to manufacturing constraints I...
I am working on a project that involves a large gap (measured axially) between the top and middle (scraper) ring. The space between the two will most likely be over 14mm. The piston is of similar design to an automotive diesel engine. I am trying to find any resource describing the importance...
http://www.profblairandassociates.com/RET_Articles.html
Blair wrote a series of articles for RET magazine that discuss valveing. In one of them calculating power losses is throughly explained.
Gordon P. Blair has a few good articles in Race Engine Technology that are available as .pdf on his website. This is most likely more than you wanted to know, but it may answer some questions.
http://www.profblairandassociates.com/RET_Articles.html
