HscF1 wrote: Tommy Cookers wrote:
HscF1 wrote:Oil functions as a lubricant until the moment of the combustion. Then everything on the liners will be burned in the process. ......
this was disproved around 80 years ago
(minimum oil consumption would be closely predictable if this was so, this was important at that time)
oil migrates both upwards past the rings and downwards past the rings
So were do you think the 5 liter oil in the one hour race has gone to?
Some (a very small percentage) of the oil film on the cylinder walls is burned. Only the top 10% or so of the cylinder is exposed to combustion and most of that survives anyway.
It has already been disputed (above) that the cars consume 5 litres per race. The oil that is consumed is mostly burned in the cylinder or exhaust having either:
- worked its way up the cylinder - above the level scraped by the rings
- leaked down the valve guides (which are oil lubricated)
- misted into the engine with the blow-by gases in the ventilation system
- leaked past turbo compressor or turbine seals