Posted by showcrop on January 28, 2018 at 05:04:33 from (75.68.37.174):
In Reply to: Combustion Talk posted by David G on January 27, 2018 at 10:14:58:
In the fire service they drill the need for Stoichiometric fuel air mixture into you when training on flammable liquid and gas fires. You can't have fire if there is too much fuel in the mix or too little. I have long wondered about competition engine builders and the work that they do on cylinder heads and piston lands. For example many heads come with eyebrows around the valves, and it is common practice to cut them down. Is this the right thing to do or is it defeating the mixing and interfering with flame front? Then too, diesels usually have specially designed pistons to enhance the swirl of the air as it is compressed so that the fuel gets injected into moving air and mixes faster in order to enhance the flame front. Then an engine builder puts in different pistons to increase or decrease compression depending on what type of puller they are building. What does this do to the flame front?
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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