Please explain this difference between diesel and gasoline engines

   / Please explain this difference between diesel and gasoline engines #181  
I know a guy thats teaching his daughter the earth is flat!
I didn't believe it until my neighbor told me its true! :unsure:

willy
 
   / Please explain this difference between diesel and gasoline engines #182  
Modern two strokes , and four cycle as well, are all about HARMONICS.
That is how today's engines can achieve over unity volumetric filling.

I can not think of a single instance of a "modern" sleeve valve engine.
A once in a lifetime era I suppose.
Gone the way of the dinosaurs.

eta

Does anyone know of an example of a sleeve valve compression ignition engine?
Willys Knight. Designed because of the lack of the metal needed for regular valves. But I don’t the sealing characteristics were sufficient for CI.
 
   / Please explain this difference between diesel and gasoline engines #183  
I know a guy thats teaching his daughter the earth is flat!
I didn't believe it until my neighbor told me its true! :unsure:

willy
It is in small areas. Otherwise a spheroid.
 
   / Please explain this difference between diesel and gasoline engines #184  
The earth, with all it's trenches deep and mountain ranges high, is a more perfect sphere than any man made object!

And let me tell you CSRIO in Australia put a lot of effort into doing better.
 
   / Please explain this difference between diesel and gasoline engines #185  
The earth, with all it's trenches deep and mountain ranges high, is a more perfect sphere than any man made object!
No, not even close to the spherical accuracy of the common ball bearing.
 
   / Please explain this difference between diesel and gasoline engines #186  
   / Please explain this difference between diesel and gasoline engines #187  
Sorry, while the circumference of the earth about the equator is close to the circumference through the poles, it is only close.

Ball bearings are so precise their manufacturing technique was one of the most closely guarded secrets of WWII.

After the war when Japan was retooling and establishing their own metric interchangeability standards the sole exception was for ball bearings. They were allowed to purchase American tooling for ball bearing manufacture so they accepted SAE dimensions. Most Japanese cars and motorcycles used SAE sized ball and roller bearings the next 40 years.
 
   / Please explain this difference between diesel and gasoline engines #188  
The earth, with all it's trenches deep and mountain ranges high, is a more perfect sphere than any man made object!

And let me tell you CSRIO in Australia put a lot of effort into doing better.
More perfect that a steel ball bearing? Wow.
 
   / Please explain this difference between diesel and gasoline engines #189  
Most ball bearings are actually metric in size.
 

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