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Title: Intake Air Temperature correction factor for ignition angle Post by: lave3k on May 03, 2011, 09:01:28 PM Anyone know the map names or acronyms for correcting the ignition angle based upon intake air temperature? -Thanks
Title: Re: Intake Air Temperature correction factor for ignition angle Post by: 240sxpooter on May 04, 2011, 06:35:59 AM Anyone know the map names or acronyms for correcting the ignition angle based upon intake air temperature? -Thanks KFZWWLNM Title: Re: Intake Air Temperature correction factor for ignition angle Post by: judeisnotobscure on May 04, 2011, 06:21:01 PM ^ that map is for coolant temp not iat... at least that's how i read it.
I think there is only an iat correction for load, but i could be wrong. kftarx Title: Re: Intake Air Temperature correction factor for ignition angle Post by: Tony@NefMoto on May 10, 2011, 12:53:16 PM From what I know off hand, you can control specified load, target lambda, boost limit, and target boost pressure based on intake air temperature. I don't know of any maps that allow you to adjust ignition timing based on intake air temperature.
Title: Re: Intake Air Temperature correction factor for ignition angle Post by: masterj on January 26, 2012, 02:51:36 PM From what I know off hand, you can control specified load, target lambda, boost limit, and target boost pressure based on intake air temperature. I don't know of any maps that allow you to adjust ignition timing based on intake air temperature. Maybe you could tell those maps IDS? Especially boost limit based on IAT? Title: Re: Intake Air Temperature correction factor for ignition angle Post by: julex on January 26, 2012, 03:40:10 PM KFLDHBN
The map name translation is wrong as it makes you think it is some altitude correction map. It is not. Axis are RPM and IAT in celsius. Values are max compression ratio. At least that's what I deducted from it and my massaging of the table confirms. Title: Re: Intake Air Temperature correction factor for ignition angle Post by: kenmac on January 26, 2012, 07:25:56 PM KFLDHBN The map name translation is wrong as it makes you think it is some altitude correction map. It is not. Axis are RPM and IAT in celsius. Values are max compression ratio. At least that's what I deducted from it and my massaging of the table confirms. Isn't this just a component protection map? Basically if that pressure ratio is actually exceeded, the system goes into soft limp mode. Pretty inconvenient for tuners if you ask me. Title: Re: Intake Air Temperature correction factor for ignition angle Post by: phila_dot on January 26, 2012, 11:27:28 PM KFLDHBN The map name translation is wrong as it makes you think it is some altitude correction map. It is not. Axis are RPM and IAT in celsius. Values are max compression ratio. At least that's what I deducted from it and my massaging of the table confirms. It is. It is multiplied by ambient. Altitude increases and ambient pressure decreases. To control load based on IAT you should use KFTARX. Isn't this just a component protection map? Basically if that pressure ratio is actually exceeded, the system goes into soft limp mode. Pretty inconvenient for tuners if you ask me. No, it is simply multiplied by ambient then converted to load. If this is lower than the other max load values then rlmax_w will follow it. Title: Re: Intake Air Temperature correction factor for ignition angle Post by: phila_dot on January 26, 2012, 11:38:57 PM KFZWWLNM This is correct. The axis are nmot and tans. ^ that map is for coolant temp not iat... at least that's how i read it. I think there is only an iat correction for load, but i could be wrong. kftarx That is KFZWWLRL and it is the actual warm up map. Title: Re: Intake Air Temperature correction factor for ignition angle Post by: kenmac on January 27, 2012, 04:34:34 AM No, it is simply multiplied by ambient then converted to load. If this is lower than the other max load values then rlmax_w will follow it. I see. So at best KFLDHBN will limit load based on ambient pressure. Title: Re: Intake Air Temperature correction factor for ignition angle Post by: silentbob on January 27, 2012, 10:36:48 AM Quote from: julex KFLDHBN The map name translation is wrong as it makes you think it is some altitude correction map. It is not. Axis are RPM and IAT in celsius. Values are max compression ratio. At least that's what I deducted from it and my massaging of the table confirms. It is. It is multiplied by ambient. Altitude increases and ambient pressure decreases. To control load based on IAT you should use KFTARX. It's both not correct. The translation is right because the actual sense of KFLDHBN is to protect the turbocharger from overspinning on higher altitudes. The axis are IAT and N. Quote from: kenmac Isn't this just a component protection map? Basically if that pressure ratio is actually exceeded, the system goes into soft limp mode. Pretty inconvenient for tuners if you ask me. No, it is simply multiplied by ambient then converted to load. If this is lower than the other max load values then rlmax_w will follow it.It is a component protection map but more similar to stuff like KFLBTS. Title: Re: Intake Air Temperature correction factor for ignition angle Post by: TTQS on January 28, 2012, 10:35:35 AM KFLDHBN The map name translation is wrong as it makes you think it is some altitude correction map. It is not. Axis are RPM and IAT in celsius. Values are max compression ratio. Bob is right as usual. I spend hours translating these modules. Do you guys not read them? "...the maximum cylinder charge is limited by an external pressure dependency to avoid overloading the turbocharger at high altitudes" http://www.nefariousmotorsports.com/wiki/index.php/LDRLMX_3.100_(Calculation_of_LDR_Maximum_Cylinder_Charge_rlmax) TTQS Title: Re: Intake Air Temperature correction factor for ignition angle Post by: nyet on January 28, 2012, 11:42:29 AM It is. It is multiplied by ambient. Altitude increases and ambient pressure decreases. To control load based on IAT you should use KFTARX. No, it is simply multiplied by ambient then converted to load. If this is lower than the other max load values then rlmax_w will follow it. This always baffled me... ME7 calculates both req load -> req boost AND back calculates max pressure (from max pr) to load.. Can somebody post a simple equation for both? I've been trying to decipher the FR, but what i come up with has yet to match my logs Title: Re: Intake Air Temperature correction factor for ignition angle Post by: silentbob on January 29, 2012, 02:29:12 AM I'm not excatly sure what you mean, but if it's regarding rlmax then have a look at LDRLMX in the FR.
Title: Re: Intake Air Temperature correction factor for ignition angle Post by: vwaudiguy on May 30, 2013, 10:21:41 PM Anyone know the map names or acronyms for correcting the ignition angle based upon intake air temperature? -Thanks Sorry to bump this from the dead, but was the OP's question ever answered? If it was I missed it. Just curious to know the acronym. Thanks! Title: Re: Intake Air Temperature correction factor for ignition angle Post by: phila_dot on May 31, 2013, 04:14:44 AM Literally two threads down:
http://nefariousmotorsports.com/forum/index.php?topic=3956.0title= Title: Re: Intake Air Temperature correction factor for ignition angle Post by: vwaudiguy on May 31, 2013, 08:56:19 AM KFZWWLNM? If so, thanks! :)
Title: Re: Intake Air Temperature correction factor for ignition angle Post by: littco on October 17, 2013, 03:52:32 PM KFZWWLNM? If so, thanks! :) Sorry to ask again but isn't this just an after start/start map? |