STD Tuning Engine My electric alda ionising smoke detector idea...

My electric alda ionising smoke detector idea...

My electric alda ionising smoke detector idea...

 
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HughF_UK
GT2256V

140
11-07-2010, 11:34 AM #1
So, I was discussing the way the alda works with my work colleagues (we work in electronics) and the discussion came around to using a pwm controlled actuator on the alda pin, based on boost.

He suggested using the guts from an ionising smoke detector to monitor the amount of black smoke and then control the pwm actuator... I like the idea of this. I'm going to gut a battery powered smoke detector and get busy with the scope to try and model how the ionising chamber output changes with varying smoke levels...

I'll use this thread to track the progress of my work...

Feel free to contribute ideas everyone.
HughF_UK
11-07-2010, 11:34 AM #1

So, I was discussing the way the alda works with my work colleagues (we work in electronics) and the discussion came around to using a pwm controlled actuator on the alda pin, based on boost.

He suggested using the guts from an ionising smoke detector to monitor the amount of black smoke and then control the pwm actuator... I like the idea of this. I'm going to gut a battery powered smoke detector and get busy with the scope to try and model how the ionising chamber output changes with varying smoke levels...

I'll use this thread to track the progress of my work...

Feel free to contribute ideas everyone.

ForcedInduction
Banned

3,628
11-07-2010, 11:36 AM #2
Or...you could use your right foot and the rearview mirror. Wink
ForcedInduction
11-07-2010, 11:36 AM #2

Or...you could use your right foot and the rearview mirror. Wink

HughF_UK
GT2256V

140
11-07-2010, 12:03 PM #3
Yeah, that works well... apart from when my MOT tester goes and does as the emissions computer tells him and does the 'depress accelerator' bit once a year and I get an emissions failure.

In all seriousness, he's 'sensible' and will happily start the test from a higher rpm (even though he's not meant to) so we get some boost in, and will only blip it if needed... I guess that what I need to do is make an alda from some aluminium and nylon stock with a few o-rings (i was looking at some billet aluminium dump valves I have and wondering if they could donate parts) and allow it to have a preload.

As I haven't even got my pump built up yet, not totally sure how smoky the 7.5mm floyd elements will be with my hx35 with super profile 54mm compressor. I guess it's a suck it and see kind of thing.
This post was last modified: 11-07-2010, 12:04 PM by HughF_UK.
HughF_UK
11-07-2010, 12:03 PM #3

Yeah, that works well... apart from when my MOT tester goes and does as the emissions computer tells him and does the 'depress accelerator' bit once a year and I get an emissions failure.

In all seriousness, he's 'sensible' and will happily start the test from a higher rpm (even though he's not meant to) so we get some boost in, and will only blip it if needed... I guess that what I need to do is make an alda from some aluminium and nylon stock with a few o-rings (i was looking at some billet aluminium dump valves I have and wondering if they could donate parts) and allow it to have a preload.

As I haven't even got my pump built up yet, not totally sure how smoky the 7.5mm floyd elements will be with my hx35 with super profile 54mm compressor. I guess it's a suck it and see kind of thing.

ForcedInduction
Banned

3,628
11-07-2010, 12:18 PM #4
(11-07-2010, 12:03 PM)HughF_UK once a year
Cut back the throttle. Lengthen the lever stop on the pump and/or shorten the pedal rod.
This post was last modified: 11-07-2010, 12:19 PM by ForcedInduction.
ForcedInduction
11-07-2010, 12:18 PM #4

(11-07-2010, 12:03 PM)HughF_UK once a year
Cut back the throttle. Lengthen the lever stop on the pump and/or shorten the pedal rod.

HughF_UK
GT2256V

140
11-07-2010, 12:25 PM #5
Yeah, that's the norm with our VE pumped cars (not many of them these days, our two diesels in the family are now vp30 pumped with bosch edc)... I'll just make some adjustments come smoke test time.

Do you guys get your tests done on the rollers, so under load? Ours is just a rev it up test with different smoke levels for turbo and N/A
HughF_UK
11-07-2010, 12:25 PM #5

Yeah, that's the norm with our VE pumped cars (not many of them these days, our two diesels in the family are now vp30 pumped with bosch edc)... I'll just make some adjustments come smoke test time.

Do you guys get your tests done on the rollers, so under load? Ours is just a rev it up test with different smoke levels for turbo and N/A

ForcedInduction
Banned

3,628
11-07-2010, 12:32 PM #6
Yes, Denver uses a loaded test at 60mph. All they're looking for here is 20% max opacity, which is pretty bad if its more than that.
This post was last modified: 11-07-2010, 12:32 PM by ForcedInduction.
ForcedInduction
11-07-2010, 12:32 PM #6

Yes, Denver uses a loaded test at 60mph. All they're looking for here is 20% max opacity, which is pretty bad if its more than that.

E300TSC
Turbo-Supercharged

321
11-07-2010, 04:19 PM #7
You don't even need the complexity of an ionizing smoke detector. Just a simple light source and photocell will do. Besides, the smoke from the exhaust will destroy the ionization chamber in short order...

To keep the photocell and light chamber clean of soot, bleed some boost into the exhaust via a very small tube to feed clean air to them.

1998 MB E300 - 194,000 miles. Current/future mods: 7.5mm pump elements, Holset HX40 Turbo feeding Eaton M90 supercharger through custom fabbed intake system. Aeroturbine muffler, scratch-built 4" stainless exhaust. EGR eliminated, ECM recalibrated, modified rack position feedback circuit. Porterfield RS brake pads, Bilstein sport shocks, VDO EGT, oil and boost gauges.

2000 Ford F250 - 150,000 miles. Current/future mods: DP Tuner 3 map chip, scratch-built high flow intake, high output IDM, open circuit fuel system, ball bearing turbo, South Bend full metal clutch, slotted and drilled rotors. Autometer Sport Comp EGT and boost gauges.
E300TSC
11-07-2010, 04:19 PM #7

You don't even need the complexity of an ionizing smoke detector. Just a simple light source and photocell will do. Besides, the smoke from the exhaust will destroy the ionization chamber in short order...

To keep the photocell and light chamber clean of soot, bleed some boost into the exhaust via a very small tube to feed clean air to them.


1998 MB E300 - 194,000 miles. Current/future mods: 7.5mm pump elements, Holset HX40 Turbo feeding Eaton M90 supercharger through custom fabbed intake system. Aeroturbine muffler, scratch-built 4" stainless exhaust. EGR eliminated, ECM recalibrated, modified rack position feedback circuit. Porterfield RS brake pads, Bilstein sport shocks, VDO EGT, oil and boost gauges.

2000 Ford F250 - 150,000 miles. Current/future mods: DP Tuner 3 map chip, scratch-built high flow intake, high output IDM, open circuit fuel system, ball bearing turbo, South Bend full metal clutch, slotted and drilled rotors. Autometer Sport Comp EGT and boost gauges.

willbhere4u
Six in a row make her go!

2,507
11-07-2010, 05:12 PM #8
I'd have thought an o2 sensor would do the trick it's already meant for exhaust! And determines the air fuel ratio!

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
11-07-2010, 05:12 PM #8

I'd have thought an o2 sensor would do the trick it's already meant for exhaust! And determines the air fuel ratio!


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

diesel2fast4u
GT2256V

107
11-08-2010, 01:02 PM #9
(11-07-2010, 05:12 PM)willbhere4u I'd have thought an o2 sensor would do the trick it's already meant for exhaust! And determines the air fuel ratio!
Lambda?...................

Grand cherokee WK (OM642)
diesel2fast4u
11-08-2010, 01:02 PM #9

(11-07-2010, 05:12 PM)willbhere4u I'd have thought an o2 sensor would do the trick it's already meant for exhaust! And determines the air fuel ratio!
Lambda?...................


Grand cherokee WK (OM642)

willbhere4u
Six in a row make her go!

2,507
11-08-2010, 06:47 PM #10
same thing!

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
11-08-2010, 06:47 PM #10

same thing!


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

Einar
GT2256V

118
11-08-2010, 07:26 PM #11
You can use a more modern A/F sensor, O2/Lambda-sensor are not in use on Diesel, and not any more on petrol engines. Navara/Pathfinder diesel has a A/F-sensor on the exhaust.
Einar
11-08-2010, 07:26 PM #11

You can use a more modern A/F sensor, O2/Lambda-sensor are not in use on Diesel, and not any more on petrol engines. Navara/Pathfinder diesel has a A/F-sensor on the exhaust.

ForcedInduction
Banned

3,628
11-08-2010, 08:19 PM #12
(11-08-2010, 07:26 PM)Einar O2/Lambda-sensor are not in use on Diesel

Yes they are.
ForcedInduction
11-08-2010, 08:19 PM #12

(11-08-2010, 07:26 PM)Einar O2/Lambda-sensor are not in use on Diesel

Yes they are.

diesel2fast4u
GT2256V

107
11-09-2010, 01:20 AM #13
(11-08-2010, 07:26 PM)Einar You can use a more modern A/F sensor, O2/Lambda-sensor are not in use on Diesel, and not any more on petrol engines. Navara/Pathfinder diesel has a A/F-sensor on the exhaust.

Big Grin Lambda = A/F ratio ....

http://www.mrtrally.com.au/performance/d...ochure.pdf
This post was last modified: 11-09-2010, 01:22 AM by diesel2fast4u.

Grand cherokee WK (OM642)
diesel2fast4u
11-09-2010, 01:20 AM #13

(11-08-2010, 07:26 PM)Einar You can use a more modern A/F sensor, O2/Lambda-sensor are not in use on Diesel, and not any more on petrol engines. Navara/Pathfinder diesel has a A/F-sensor on the exhaust.

Big Grin Lambda = A/F ratio ....

http://www.mrtrally.com.au/performance/d...ochure.pdf


Grand cherokee WK (OM642)

JTY
GTA2056V

92
11-10-2010, 04:43 AM #14
Just use wideband lambda, much easier and it's very robust.
Works also with high smoke superturbos Big Grin

- MB w126 300SD Superturbo (US) -83, Mods: OM617A with custom head work, Master Power Turbo 802332, PP-Diesel custom 7mm IP, China intercooler, KKD-Motorsport exhaust manifold, DIY intake manifold, Coolmist Waterinjection, DIY Supermeter display/datalog with PLX Wideband Lambda, Siekkinen custom 722.3 autotrans, Elbe Performance LSD, Green Filter cold air intake, straight 3" exhaust with two dual 2.5" outputs
- MB r129 500SL AMG (JDM) -94
Full AMG bodykit, full JDM features, modified ECU and exhaust
- MB w123 250E-TT (JDM) -85
Full 1JZ-GTE twinturbo conversion, full aircon, custom china cooler, custom IC-pipes, custom sport recaro interior, custom 3-piece JDM rims
JTY
11-10-2010, 04:43 AM #14

Just use wideband lambda, much easier and it's very robust.
Works also with high smoke superturbos Big Grin


- MB w126 300SD Superturbo (US) -83, Mods: OM617A with custom head work, Master Power Turbo 802332, PP-Diesel custom 7mm IP, China intercooler, KKD-Motorsport exhaust manifold, DIY intake manifold, Coolmist Waterinjection, DIY Supermeter display/datalog with PLX Wideband Lambda, Siekkinen custom 722.3 autotrans, Elbe Performance LSD, Green Filter cold air intake, straight 3" exhaust with two dual 2.5" outputs
- MB r129 500SL AMG (JDM) -94
Full AMG bodykit, full JDM features, modified ECU and exhaust
- MB w123 250E-TT (JDM) -85
Full 1JZ-GTE twinturbo conversion, full aircon, custom china cooler, custom IC-pipes, custom sport recaro interior, custom 3-piece JDM rims

 
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