It is currently Fri Dec 14, 2018 1:10 pm

Engines with different sizes of cylinder

Miscellaneous (car related) stuff and BSing. Craigslist/eBay finds, stuff from Hooniverse or elsewhere in the automoblogosphere, youtube or whatever.

Moderators: Greg, Hatchtopia, needthatcar, julkinen, Graverobber

  • Author
  • Message
User avatar


  • Posts: 107
  • Joined: Sun Jun 24, 2012 9:38 pm

Engines with different sizes of cylinder

PostTue Apr 16, 2013 9:12 pm

So I saw a diagram of a three-cylinder steam engine the other day and each cylinder was a different size than the others.


There might be very good reasons, but could you make an internal combustion engine with different-sized cylinders?
(It wouldn’t be done for the same reasons as the steam engine of course.)

A couple of applications I can think of:
Engines with cylinder shutdown – a couple of little cylinders to keep you rolling, bigger ones to give you power.
Compact engines that need high torque and high revs – long-stroke cylinders to do their thing in low down and short-stroke cylinders take on more of the work high up.

I think most of the that’s-dumb-because problems could be solved.

So, just as an idea could it be done? And can you think of other applications?


PS: For those following my "USA trip advice" post, I land in Los Angeles on May 19.

Return to The Driveway

Who is online

Users browsing this forum: No registered users and 1 guest