Compression stroke question
Compression stroke question
(OP)
Does anyone know what the consistancy of the charge is at TDC (maximum compression in cylinder)?
I'm asking because I am wondering if you could "pipe" the charge from one part of an engine to another so all the compression would take place in one area and all the combustion in another
I'm asking because I am wondering if you could "pipe" the charge from one part of an engine to another so all the compression would take place in one area and all the combustion in another





RE: Compression stroke question
Cheers
Greg Locock
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RE: Compression stroke question
RE: Compression stroke question
In the early 1900s many patents were granted to inventors who realized that the work required for compression would be less if the compression were done outside of the hot working chamber. I do not know of any of them other than the Brayton that were successful.
The wankel rotary compresses its combustion gas then transfers it to another area for combustion. The Louis Kramer engine is a composite that uses some outside compression and finishes compression in the working cylinder. And then there are gas turbines and jet engines that use different areas for compression, combustion and expansion.
RE: Compression stroke question
Regards
eng-tips, by professional engineers for professional engineers
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RE: Compression stroke question
So yes Ceasar, at least part of the compression stroke can be accomplished at a central supercharger, and the high pressure air piped to each cylinder with appropriate inlet valve timing. Mazda have done a lot of work on this.
RE: Compression stroke question
Regards, Ian
RE: Compression stroke question
RE: Compression stroke question
Cheers
Greg Locock
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: Compression stroke question
You might take a look at the old 2-stroke Puch motorcycles. Transfer ports in one cylider, exhaust in the other. Try a search on "puch twingle". I owned a few of the beasts.
h
RE: Compression stroke question