Fuel VE, AFR, and Ignition Table switching based CTS or MAT

[luftvagon]

I've added it to 3.3.2+luftvagon0.6

It has been tested with 1 known bug.

http://www.msextra.com/forums/viewtopic ... 3&p=383997

[luftvagon]

I just posted this over on msextra forum. This is what may be needed to implement that feature.. Some variables may need to be declared somewhere else... but this is all i came up within 15 minutes.

patch for 3.3.0

line 708: ms2_extra_main.c

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            else if ((flash5.feature5_0 & 0x0c) == 0x10) {
                    if (outpc.cts > flash5.tsf_cts) {
                        uctmp = 1;
                    }

line 407 : ms2_extra.h

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    int tsf_kpa, tsf_tps, tsf_cts;

line 854 : ms2extra.ini

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#if CELSIUS
      tsf_cts  = scalar,  S16,  16,  800,  "°C",   0.05555,  -320.000,{cltlowlim},   {clthighlim},      1 ;
#else
      tsf_cts = scalar,  S16,  16,   800,  "°F",       0.10000,  0.00000,{cltlowlim},   {clthighlim},      1;
#endif

line 880:

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      f5_0_tsf_opt   = bits  ,  U08,      828,      [2:3], "Hardware", "rpm", "kPa", "TPS", "CTS"

line 1948: ms2extra.ini

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    tsf_cts = "CTS threshold."

line 29226: ms2extra.ini

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      field = "CTS greater than",    tsf_cts,  { f5_0_tsf && f5_0_tsf_opt == 4 }

[foreverska]

Isn't there cold-start enrichment for this? Ideally you reach operating temp quickly enough that killing inefficiencies in the cold table won't matter too much in the grand scheme of things.

Also how do you keep (I assume CTS here really means cylinder head or oil since ACVW forum) CTS cool long enough to do tuning of a whole table? Dynoshop at -20? Sounds miserable.


Maybe I'm missing the point though.

[luftvagon]

i will still be using the warmup enrichment.. however, i need this feature because linear warmup enrichment is not ideal when you have purpose built lean spots in your fuel map...

[Piledriver]

Interesting.

I don't see an upside to switching or blending the VE tables when it is a correctly calibrated VE Table.
That makes sense if using a flex fuel strategy of some sort, or to account for injected methanol from another system.

I want something similar for warm up assistance/temp control for my aircooled engine--- Rather than alter the VE table, change the AFR target table to one all ~stoich when it's below a certain CLT (~CHT, my open air Cheby CLT sensor lives neat the thermostat in the hot air exit airflow)

With the std map I use (running ~19:1 AFR over most of the map) it never gets to proper running temp at cruise under ~70F outside air temp, even with a thermostat. At ~stoich it heats up very fast.

I was looking at MS3s table blending features, but really haven't had time to look at it, perhaps this long weekend.
I believe AFR target table switching is already a feature, at least for MS3, and very likely MS2extra.

[luftvagon]

I found that my aircooled Type4 runs best cold with the autogenerated ve table. Once warmed up, I get better results with my map with 17AFR (at this point) hoping to go even higher.
I am going to be compiling/testing later.

[luftvagon]

Hello everyone, I just posted a working patch to enable Fuel VE and Ignition Table switching based on CLT and MAT:

Please see
http://www.msextra.com/forums/viewtopic ... 3&p=383997