FC Datalogit:




FC Tune:




+ Multiple map watch windows can be open at the same time
+ Map watch for all channels is done in the background, you can switch the channel or open a new window and have all values
+ Even multiple windows doesn't slow down logging and everything is displayed in real time

I still need to find a better default font, set the cells right aligned etc.

Beta testing for a fully working release should start over the Easter weekend (14-16)

 

this is coming along awsome!!! Great work...can't wait!
not to be a PITA but will this release be accompanied by your box or soon after?

 

Wasn't this supposed to be done last year? Any idea of the projected date it will become availible for sale? Sorry to be so eager...but I need this...LOL

 

Offtopic FastHatch but one of the confusions with FC Datalogit was that it has Basic Knock and Advanced Knock and if you look at the values from a given log file they differ from Basic to Advanced and no one knows which one is correct. What does "FC Tune" show when its looking at a log file, does it match Advanced or Basic ?

 

As soon as the next release is out I'll finish the box.


Yes and no, I've hoped to have a replacement for the Datalogit for the RX7/Honda sooner but I've always said that it won't be "done" before the end of the year. Many PFC models are not supported yet and I still have a long list of features I would like to implement. RX7 owners can make the switch soon if they want and then I'm looking forward for upcoming releases and features.


The difference is coming from the timing when the packets have been pulled from the PFC. The software pulls Advanced, Basic, Sensor, ... data in a loop and there is a few milliseconds difference between Advanced and Basic data. The fact that each line in the log file has only one time stamp might be confusing because that is the time when a new loop was started. FC Tune never pulls Advanced and Basic because the data is redundant. You only select the channels you want to log and Tune decides how it gets the fastest sample rate. Some channels can also be calculated and don't need to be read from the PFC.

Talking about calculating channels, how is the injector duty cycle for rotaries calculated? Same as a 2 stroke engine?

 

congratulations on your project. i look forward to tuning w it...

injector duty cycle should be an area of significant interest as it relates to Auxiliary Injection (AI).

i will be shortly firing up my car for the season and have installed an AI. 100% methanol will be injected and replace approx 15-20% of the pump gas. i believe that 2006 will bring greatly increased appreciation for AI especially in regards to turboed rotaries.

AI is (often) managed by a progressive electronic controller and is adj as to initial turn on, ramp, and max. my unit uses the signal from the MAP sensor.

i spent alot of time as to which vendor to use and am really happy w Alkycontrol.com.

another vendor Aquamist (UK) uses fuel injector voltage as a staging signal... i really like the idea of staging the AI delivery off Injector Duty Cycle rather than boost as after peak torque on a rotary boost can stay constant but fuel delivery (IDC) declines approx 20%. if the AI staged off IDC it could reduce AI delivery after peak torque.

the problem w the rotary is that, as i understand, there is no voltage signifying IDC. you have voltage to the primary injectors and voltage to the secondary injectors and then some calculation that is the IDC.

currently one is forced to stage my AI off either the primary or secondary voltage signal. neither is the necessary complete representation of total fuel delivery. (that's the problem w the Aquamist setup when used w the rotary)

given your understanding of the PFC is there a way to deliver the IDC signal for usage?? i think it would be a major plus.

as to the mechanics of how the IDC is calculated on a rotary... one crank rev equals 1/3 of a rev of the two rotors... one crank rev equals two power events. so the 2 rotor rotary produces the same number of power impulses as a 4 cycle 4 cylinder motor. (perhaps you know this and i misunderstand your question, if so apologies in advance).

great job,

howard coleman

 

What about values like IGL, IGT.. is there anything else I'm missing? You need to refer to these values, however they are only available in Advanced/Basic data..? I guess you're referencing these based on what is in a static map based on MAPN, MAPP..?

This might be relevant to howards very interesting query above..

http://www.wvinter.net/~flanham/wlan...l/staging.html

 

If I understand you right you want a combined pulse width modulated output for the primaries and secondaries?


A 4 stroke engine has only 1 power cycle every 2 crank revs. Therefore you have twice the time for the injection.

4 stroke:
Duty cycle = pulse width / (1000/([rpm/2] / 60))


Rotary:

Duty cycle = pulse width / (1000/[rpm / 60])


So the duty cycle for a rotary is the same as for a 2 stroke engine?!?

 

Could you elaborate your question please? IGL and IGT is available in Basic AND Advanced data, so there is no reason to read both from the PFC.

 

"If I understand you right you want a combined pulse width modulated output for the primaries and secondaries?"

ideally a 0-5 volt output representing (total) injector duty cycle. BTW, my Apexi AVCR displays IDC as does the Datalogit of course but when i go to the Datalogit notepad direct info log i don't see voltage, just the IDC. what we need is a voltage output so we can then drive various items including AI.


So the duty cycle for a rotary is the same as for a 2 stroke engine?!?

i have always considered the rotary a 2 stroke. every pass of the combustion chamber past the sparkplug creates a power event. relative to the 2 rotor motor, since the rotors move at 1/3 crank speed a power event occurs twice w each crank rotation.

HTH,

howard coleman

 

There is no voltage output representing the IDC. The injectors are duty controlled and I'm not sure if the analog outputs are fast enough to regulate the voltage output according to the IDC.

AFAIK the alcohol injections are also pulse width controlled, they work exactly like a injector. So you want a PWM output and not a 0-5V output.

 

you are correct... my pump is PWM

 

This looks a great item Fasthatch, I haven't had chance to read all through this yet. Is the Mr2 Turbo 3SGTE pro spec pfc covered or is it one of the future models? I have one of these pfc's to fit to my Gt4 and don't want to buy a Datalogit, I am waiting to fit it until I have some way of tuning it.

Phil

 

Hey Phil, I also own a GT4 but have the AP engineering variant PFC, I believe that there was a mention that these will be covered as well. Since I have a RX7 as well as the Celica I will be purchasing this as soon as it become avaialble and hopefully will be able to get an upgrade to cover the 3S-GTE engine as well.

Fast Hatch you are right that the twin Rotor wankel has the same firing frequency as a 2 stroke, when describing 1 rotor versus 1 piston. It Fires twice as often as a two cylinder 4 stroke.

Hence why in some countries UK included the engine is listed as a 2.6L. cause this is the comparable volume of a four stroke engine, although the RX7 rotary is not as efficient so a discounting figure for volume should be inputed.

 

Fasthatch, would it possible to add some buttons on the "Map Watch" window to make the things shortly. For instance Selecting from "Knock Level" to "AN1 Input(wideband for me)" needs a lot of scrolling. May be just a few of them can be shotcut buttons.

Anyway, multiple map watch windows will also make it fast. Good feature

 

Your statement..

I take this to mean you exclude read requests for both advanced and basic data packets when logging?

I was thinking you were extrapolating IGL and IGT based on MAPP, MAPN. If not.. it's probably a good idea for logging performance..

 

Yes, FC Tune either reads Basic OR Advanced. Some channels can also be calculated based on MAPP and MAPN, but some not or at least not accurate. I'm not sure if logging is fast enough to calculate corrections based on throttle movement for example.

 

Hey Fasthatch can you answer this question for me
https://www.rx7club.com/power-fc-forum-47/kashi-box-524337/

Its related to your box...It will let me get moving on some stuff...

Thanks

 

Thanks for your response... I see why your have to build your own box...I will now wait patiently for it to be released!

Thaanks
Marshall

 

Fasthatch:
What will the timing on the Windows CE version be? Also what kind of interface will need to be used? I know the out is basically a serial setup but most PDA's are now USB only sync cables. Finally, will the last version be available for download soon, not to tune just to play with.

Thanks again for all your hard work.

 

I guess the CE version will be available in about 2 month. You could play with the monitoring features earlier, but tuning is a PITA with the onscreen keyboard



Sometime next week. We've holidays 13-17 so I should get some stuff done.



Q: "VMOP" under sensors is the Position Sensor Voltage and "Oil" under Advanced is the Stepping Motor Position?

The Stepping Motor Position is the output from the ECU and the Position Sensor Voltage is the Input to check the position??? So the full name of VMOP would be Stepping Motor Position Sensor Voltage?

 

My main use of a PDA would be to view engine vitals. Kind of like the commander but hopefully a lot clearer.

 

Can't wait until I can purchase the box and use the software!
Keep up the great work.!

 

 

OH man that rocks!! great work