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Old 04-05-2012, 08:01 AM   #131 (permalink)
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The Beast - '93 Fleetwood Flair includes kitchen sink
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I deleted the circuit.

I deleted the comparator circuit. I went with the Jcar module. It works much better and I built it and it works! Only $30.00 from Australia.

I am still having fun trying to calibrate the MPGuino. My rig is a large motor home with a 75 gallon tank, now at 1/4 tank, it will take $264 to fill it up. A 40 mile round trip calibration run at about 11 mpg = 3.63 gallons X $4= $14.62 per run. Gettin' kind of expensive.

The best mileage is on a very long drive of 300 miles on the expressway. Drive a very slow 53 mph. Coast on all down hills. Accelerate as quickly as you can so the tranny up shifts quickly. That sounds crazy, but every time the tranny shifts up the fuel usage drops 1-2 mpg. Hey, it starts at 1.5 mpg in low gear. The good mpg starts at 45 mph. Town driving will get ya 5 mpg!

Cheers

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Old 04-05-2012, 05:08 PM   #132 (permalink)
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2 years ago I was quite happy with the simple filtering circuit I made, but then I got another car and it had normal injectors, so I deleted the filter.

http://ecomodder.com/forum/165849-post82.html
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Old 08-18-2016, 04:39 AM   #133 (permalink)
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problem seems inconclusive as to what is the best solution

This problem seems inconclusive as to what is the best solution. I read through 14 pages of posts on this thread and did not find a clear answer. Is this a dead subject, or did the conversation move to another thread somewhere? I was hoping that with all the R&D being posted here it was developing towards a solid engineered solution but then thread died without a clear answer.

Please advise. as my car is an 88 Honda CRX HF with Peak Hold Injectors.

Thanks
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Old 08-19-2016, 03:21 PM   #134 (permalink)
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MPGuino/Jcar fuel mileage.

Quote:
Originally Posted by forums123 View Post
This problem seems inconclusive as to what is the best solution. I read through 14 pages of posts on this thread and did not find a clear answer. Is this a dead subject, or did the conversation move to another thread somewhere? I was hoping that with all the R&D being posted here it was developing towards a solid engineered solution but then thread died without a clear answer.

Please advise. as my car is an 88 Honda CRX HF with Peak Hold Injectors.

Thanks
I never found an answer to the problem on my MPguino/Jcar module. The MPGuino works nice, but only in a "sweetspot" speed (50-54 mph) . When I accelerated higher the MPG just climbed along with the speed. I would see 16 Mpg at 70 mph. That speed usually gets 7 mpg, calculated. The Jcar pulses were a good square wave.

I looked through the code and didn't see any red flags, but I am not the best programmer either. It has to be in the code somewhere.

So I run the slow speed and watch the MPGuino and adjust the throttle as needed. I usually have to back off the throttle to get better economy.

Getting good mileage means that you must maximize momentum. Once up to optimum speed , do everything possible to keep your momentum, or gain some going down hill.

Even pulse and glide is a means of maintaining momentum. It does this by short bursts of fuel burn and then a form of coasting by slightly backing off the throttle. Your coasting offsets the fuel burn by a large factor.

So I think this thread is dead.

I have to write up my mods to my 26 ft Fleetwood Flair motor home sometime. Amazingly I have often 20 mpg twice and 15 mpg many times.

Cheers

Kudos in reading all 14 pages.
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Old 06-16-2017, 11:35 AM   #135 (permalink)
kep
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Thanks for your work done, but it does not work with nozzles, peak and hold, I found a sketch. It works, could you add this algorithm to your code?
Excuse me writing serz translator

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File Type: zip mpguino code meelis11.zip (21.1 KB, 0 views)
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