In my job before retirement I worked with high voltage switch gear.
We had 4160 volt breakers that interrupted current in up to 5000 hp motors. As the breaker opened a piston in the switch gear blew a blast of air at the arc. The arc was extinguished and the switch gear wear was reduced.
IMHO the higher the density of the gas and air the easier to strike an arc as there are more molecules with loose electrons closer together. But as the engine is speeding up the turbulence in the engine cylinders is increasing at a high rate. To keep the arc from quenching from the turbulence more voltage is required.
also the spark plug gap has to be larger in high compression engines at high speeds to burn the gas at a much faster speed. This will increase voltage needed.
well if everyone agreed there would be no real discussions.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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