March 9th, 2012, 06:29 AM | #1 |
Old Guy, New Bike
Name: Mike
Location: Nagasaki, Japan
Join Date: Jun 2011 Motorcycle(s): 2011 Blue Ninja 250R, Yamaha SRV250 Posts: 133
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Water Temperature Sensor Voltage
I have a question that may need a bit of explaining.
I've installed a Power Commander V on my FI Ninjette and would like to enable fuel mapping by temperature. I can do this by tapping into the water temperature sensor (Orange wire at Pin #17 of the large ECU connector) and plugging that into the 0~5 volt analog input on the PCV. However, I'll need to input an analog voltage table (with preferably 9 values). So, I need to know what voltage is coming off the temp sensor at given temperatures. Here is an example of figures I found for a different bike: Voltage 0.185 0.280 0.471 0.906 Temp. 212.0 180.0 151.0 108.0 Does anyone out there have this data for our ninjettes? The service manual has the sensor resistance at 3 different temperatures, could that be converted into voltage somehow? Any help with this would be appreciated. |
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February 28th, 2014, 10:37 PM | #2 | |
ninjette.org member
Name: Mitch
Location: Brisbane, AU
Join Date: Feb 2012 Motorcycle(s): '10 Ninja 250 Racer Posts: 95
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Quote:
Perhaps using a multimeter could work? V=IR?
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#77 Last futzed with by kavo; March 1st, 2014 at 01:59 PM. |
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March 1st, 2014, 06:17 AM | #3 |
Freedom for Germany
Location: This World
Join Date: May 2011 Motorcycle(s): Ninja 250R-FI Posts: A lot.
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Hi Mike,
nice to see you still here and I hope you're fine. May I ask you why you want to "kill two flies with one flap"? The PC is 'only' a piggyback-system which falsifys the signal coming from the ECU, what means this signal already depends on the water-temperature (and for sure all the other measurements from all sensors). But at least you could do what you want, just only build some electronics so this would work and from what I know many biker in Germany are doing things like this. Good luck and always a safe ride PS: Here's a good writeup about the theme (I think you know that Bosch is the inventor of injection-systems): http://www.factorypro.com/tech/Brett...lculations.htm |
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March 1st, 2014, 02:19 PM | #4 |
ninjette.org member
Name: Mitch
Location: Brisbane, AU
Join Date: Feb 2012 Motorcycle(s): '10 Ninja 250 Racer Posts: 95
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found this for a s1000rr
Temperature (Fahrenheit) / Voltage 60 / 3.860 71 / 3.580 80 / 3.320 90 / 3.070 100 / 2.752 110 / 2.506 121 / 2.238 136 / 1.870 146 / 1.638 150 / 1.553 171 / 1.117 180 / 1.024 190 / 0.906 200 / 0.783 210 / 0.695 221 / 0.598 230 / 0.526 234 / 0.501
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#77 |
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March 2nd, 2014, 07:56 PM | #5 |
Old Guy, New Bike
Name: Mike
Location: Nagasaki, Japan
Join Date: Jun 2011 Motorcycle(s): 2011 Blue Ninja 250R, Yamaha SRV250 Posts: 133
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Nice Bump!
Good to see this thread getting bumped.
@kavo: I still haven't found the numbers yet. I'm thinking the best way to go about it would be to just contact Dynojet and ask them if they have the figures. Somebody MUST have them since they made the settings available. @Somchai: Yeah, I'm still here!! Just really busy with lots of other projects and haven't had time to write much. I want to do this because the Power Commander lets you set Air-Fuel ratio according to temperature. I can't do that now, so in the winter when I start the bike, I'll get about 10 seconds of the FI lamp coming on as the PCV and the ECU battle over choking the AF. Since I ride when it's pretty cold out, I find that my map doesn't produce the same good performance I was getting in the summer, as well. However, it seems the numbers are some kind of damn trade secret, since nobody posts them anywhere! I also don't have the time or tools to check them manually. (It would involve thermometers and voltmeters and more patience than I am equipped with.)
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Gaijinagain.com Mods: Tyga Stainless Exhaust, PC V, Auto-tune, Front/Rear Beet Hard Suspension Springs, Battlax S20-R's 110 front & 140 rear, BKMoto HID Projectors, Steel brake lines |
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March 2nd, 2014, 08:17 PM | #6 |
ninjette.org member
Name: Mitch
Location: Brisbane, AU
Join Date: Feb 2012 Motorcycle(s): '10 Ninja 250 Racer Posts: 95
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I've emailed Chris Kelly at Dynojet for tech help. He has been pretty good so far with other questions and I expect him to write back on Monday (US time). I suggest you also hask dynojet support and maybe we'll get somewhere
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March 2nd, 2014, 08:45 PM | #7 | |
Freedom for Germany
Location: This World
Join Date: May 2011 Motorcycle(s): Ninja 250R-FI Posts: A lot.
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Quote:
but when this is your problem or better to say the reason then please remember that cold air is very different to warm or hot air, so it depends more on the air temperature which makes the combination of a/f so different (I don't really know how to tell this in english, sorry about my poor translation knowledge). I remember long time ago Opel came up with an injection motor which was a good one but when they in the second stage changed the injection to inflow air temperature measurement they'd win 5 hp with this and the fuel usage went down also. Good luck for your plan. |
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March 3rd, 2014, 11:17 AM | #8 | |
ninjette.org member
Name: Mitch
Location: Brisbane, AU
Join Date: Feb 2012 Motorcycle(s): '10 Ninja 250 Racer Posts: 95
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Quote:
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#77 |
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March 24th, 2014, 06:05 AM | #9 | |
ninjette.org member
Name: Pete
Location: UK
Join Date: Aug 2012 Motorcycle(s): '11 250R SE (FI), '14 Daytona 675, '14 Sprint 1050 GT SE Posts: 121
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Quote:
Cheers, Pete |
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March 25th, 2014, 07:10 AM | #10 | |
Old Guy, New Bike
Name: Mike
Location: Nagasaki, Japan
Join Date: Jun 2011 Motorcycle(s): 2011 Blue Ninja 250R, Yamaha SRV250 Posts: 133
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Quote:
Here are two relevant portions of the service manual. The table shows the resistance for the ECU and the diagram shows how to test the sensor. I think the testing method may be one way to get the voltage reading. Sorry for the small pic sizes - I'm still trying to figure out how to use Gimp on a Mac.
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Gaijinagain.com Mods: Tyga Stainless Exhaust, PC V, Auto-tune, Front/Rear Beet Hard Suspension Springs, Battlax S20-R's 110 front & 140 rear, BKMoto HID Projectors, Steel brake lines |
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