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Old 01-31-2014, 12:16 PM   #1 (permalink)
BLSTIC
Master EcoModder
 
Join Date: Jun 2010
Location: Australia
Posts: 253

Delivery 'Boy - '86 Suzuki Mighty Boy
90 day: 37.15 mpg (US)

SkipSwift - '13 Suzuki Swift GL
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Calculating BSFC from injector pulse and speed

Sometime, somewhere, on the internet, I came across someone who had developed a program/board/what-have-you that connected to the injectors and vehicle speed sensor and drew a BSFC map. From the vehicle speed sensor it could tell when the vehicle was accelerating (and how much etc.) From the injector pulse it could tell fuel flow and the like.

Constants were the vehicle mass, and some injector characteristics. The key thing was that it outputted a full map, no further calculations were needed for most usage.

Can anyone point me at that thread/project? I can't seem to find it any more. It would be a great thing to attach to any lean burn vehicle, or any vehicle where lean burn has been forced to operate full time (such as any lean burn capable vehicle that has had an interceptor fitted).

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