Closed loop EFI - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 9 (permalink) Old 10-31-2004, 09:24 AM Thread Starter
 
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Closed loop EFI

Are we ever going to get closed loop EFI and port injection on motorcycles?

Sure would be nice...
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post #2 of 9 (permalink) Old 10-31-2004, 10:02 AM
 
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Haven't heard about it. Did you read this somewhere or hear some talk of it?? Please let us know if you did.
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post #3 of 9 (permalink) Old 10-31-2004, 10:05 AM
 
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for those that dont really know much about this.. here's alittle info I found on it..
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post #4 of 9 (permalink) Old 10-31-2004, 10:46 AM
 
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Thanks for the 411.
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post #5 of 9 (permalink) Old 10-31-2004, 10:46 AM Thread Starter
 
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Quote:
Originally Posted by GSXR750DJ
Haven't heard about it. Did you read this somewhere or hear some talk of it?? Please let us know if you did.
I wish I had. It would be nice to have that technology on our bikes. I'm wondering why this very available technology hasn't made it to us with the manufacturers being so competitive and all...
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post #6 of 9 (permalink) Old 10-31-2004, 10:46 PM
 
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Quote:
Originally Posted by Mojo
Are we ever going to get closed loop EFI and port injection on motorcycles?

Sure would be nice...
On most modern motorcycle engines, each carb throttle is about 6 inches from the intake valve(s). That has to be about the same distance as the port injection nozzle from the intake valve on modern car engines. The air inlet is also at the carb throttle on motorcycles, while the air inlet and measuring devices on cars may be several feet from the injection nozzle.

Except for not being able to measure and adjust for temperature and air pressure, as I see it, the motorcycle carb is already ahead of port injection. And the standard fuel injection (comparable to throttle body) on bikes is better still. If bikes have to meet extreme emissions, they will probably all use converters.
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post #7 of 9 (permalink) Old 10-31-2004, 11:08 PM
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As emissions requirements get tighter, motorcycle injection systems will get more complicated. I believe some of the high-end bikes like BMW's are running O2 sensors and cats so they probably are running closed loop, but I'm not positive about that.

Larry

Rarely is the question stupid, but sometimes the answer is you need to run everything you read online through your own personal BS meter to determine if it makes sense to you.
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post #8 of 9 (permalink) Old 11-01-2004, 06:09 AM
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I know that my co-workers BMW has 2 cats on it. That is just crazy talk!!




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post #9 of 9 (permalink) Old 11-02-2004, 06:39 PM
 
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That just seems like a waste of time and money considering most of it we are going to chop off anyway!!!
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