ArgDub
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« on: January 31, 2012, 05:16:43 PM »
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No manifold explosions, just the sound of the turbo whistling at 12 PSI and a healthy 9.5 AFR to keep temperature under control  It works retarding ignition acording to AL_MAX_IGN_ADV map at the same time it opens the throttle as specified by AL_MAXTHROTTLE and set lambts_w to AL_MAX_LAMDA. Here is the ALS FR:  Logs:   There are some things I have yet to solve, but it looks promising. |
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Jason
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Breaks everything!
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« Reply #1 on: January 31, 2012, 06:24:59 PM »
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Have people really been blowing things up? I must have used ALNLS at least 20 times today. :lol:
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ArgDub
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« Reply #2 on: January 31, 2012, 07:02:49 PM »
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Have people really been blowing things up? I must have used ALNLS at least 20 times today. :lol:
Of course you not going to blow up anything with ALS, this thread is about exhaust system durability. I'm expanding the options, this ALS is totally configurable. You can choose from: Normal ALS Normal ALS with lambda control Throttled ALS with retarded ignition |
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Jason
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Breaks everything!
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« Reply #3 on: January 31, 2012, 08:02:01 PM »
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That was my question though... Has anybody broken any manifolds? I'm still running stock airgap manifolds and haven't had any issues despite flat out abuse of the alnls... I was worried when I first tried it but I haven't suffered any ill effects. ... yet
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carlossus
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Leon Curpa Stg1+
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« Reply #4 on: February 01, 2012, 02:31:47 PM »
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Really good to see original work coming out through this forum, I would love to try this when it's finished!.
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ArgDub
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« Reply #5 on: February 01, 2012, 02:38:58 PM »
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That was my question though... Has anybody broken any manifolds? I'm still running stock airgap manifolds and haven't had any issues despite flat out abuse of the alnls... I was worried when I first tried it but I haven't suffered any ill effects. ... yet
That's good to know, but I'm not worried about the manifold, but the durability of the turbo. I found that a 10 AFR calms most of the explosion produced by ignition cut, unless you like the bang noise, of course  |
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kenmac
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« Reply #6 on: February 04, 2012, 08:27:39 PM »
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Did you end up writing your own function from scratch?
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ArgDub
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« Reply #7 on: February 05, 2012, 02:18:00 PM »
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I wrote three functions: Lambda enrichment, KFZW limit and throttle limit. To cut ignition I'm using setsi's function and the bosch's table lookup functions.
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« Last Edit: April 29, 2012, 07:26:09 PM by ArgDub »
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sn00k
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« Reply #8 on: February 05, 2012, 02:47:46 PM »
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This looks promising, i didnt think -24 deg was enough to build boost at those rpms.. can it be "backed" further than this? (may be enough on these turbos, but perhaps not on big ones..) ..and is there a need to cut the spark when you have the throttle controlling the rpms, and perhaps fuel-cut as safety..?  |
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ejg3855
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« Reply #9 on: February 13, 2012, 09:14:12 AM »
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Interesting, I need to compare the two flow charts with this and the other method I am currently running.
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sn00k
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« Reply #10 on: February 23, 2012, 10:55:34 AM »
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ArgDub, you still working on this? |
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ArgDub
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« Reply #11 on: February 24, 2012, 12:54:49 PM »
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I will resume this next week, I been working on others projects
Regarding to retarding ignition more than -24deg, there is a limit hardcoded in ZWGRU function which is easily bypassable, but I remember to have read that the -24deg limit is imposed by the ignition driver.
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sn00k
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« Reply #12 on: February 24, 2012, 05:39:55 PM »
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ok, well -24deg is way better then nothing, i would love to try building boost with this =) atm even tho i have reworked the "hard" LC function a bit to have it under control by throttle and fuelcut, the cat-cons and the stock exhaust sure is taking a beating under there.. |
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ArgDub
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« Reply #13 on: February 24, 2012, 08:09:37 PM »
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-24deg is enough to make more that 10psi without spark cut, which I think is more than enough to launch a fwd. I investigated the fuel cut route, but throwing fresh air into the manifold would negate the purpose of enriching the mixture. ok, well -24deg is way better then nothing, i would love to try building boost with this =) atm even tho i have reworked the "hard" LC function a bit to have it under control by throttle and fuelcut, the cat-cons and the stock exhaust sure is taking a beating under there.. |
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