OT - engine configurations


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Posted by Jack Cain on Thursday, January 08, 2004 at 9:53PM :

I was looking at a page that was describing different engine configuations (inline 4, inline 6, V-6, V-8, V-12 ) and what contributed to their smoothness - a link to the page is provided below.

There is a statement regarding inline 4 engines that I am at a loss to understand.

"As you can see in the picture, pistons which are moving up, are moving at different speeds than pistons that are moving down."

This doesn't make sense to me since the crankshaft journals, in the picture at least, are all in the same plane.

Perhaps someone with a greater understanding could enlighten me.

Thanks,

Jack



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