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The Hesselman Diesel

I think it was a diesel from Sweden, but not sure. Rusty Acre or Dutchman, what do you guys know? jal-SD
 
The Hesselman engine was not actually a diesel. It started on gas but then it had an injection pump and a magneto. Fuel was injected into the cylinder and lite with a spark. The compression ratio was 6:1. Waukesha Engine was licened to build them in the states. The engine in the L Case was a modified Case block with an entirely different head than a gas L had. They were called an oil engine because they were spark ignighted. Allis Chalmers used a lot of the Waukesha version in their construction equipment.
 

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All Case castings, using Hesselman's patent . I never mentioned this before BUT I have a pallet of NOS parts , possibly enough to build another engine.
 
longcases, If I understand it correctly, Waukesha was licenced to use the Case block and modify it to use Waukesha parts. The compression ratio of 6:1 is even lower than some gasoline engines so I take it that by injecting the fuel, the idea was to deliver a finer mist within the combustion chamber than what a carburetor could provide. I'm puzzled as to why such a low compression ratio was used. It would seem a higher ratio would be advantageous.

Don L. Would you have some technical info that you could share?
 
I should have paid more attention to Don L's comment wherein he states that all the parts were made by Case using Hesselmans patent. Could it be that Waukesha made the parts for Allis Chalmers, but not for Case?

I find this very interesting considering that Case drug its feet a bit when it came to recognizing that steam powered tractors were on their way out.
 
If they were burning a very low octane fuel on a spark ignition engine, which this was, a low compression would probably be necessary to avoid pre-ignition. I think the low cost fuel heads on these (L's) were probably at that 6:1 or so.
 
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