Not a video (yet). BMW "ioniser"
Added 2020-06-08 21:17:46 +0000 UTCDoes anyone have a pinout for this module before I take it apart? I've had a quick probe on the three pin connector with a meter, and think I've got the common/negative sussed, but there are two other connections - probably +12V and a PWM input for power control.
I will be opening it on video, so was hoping I could test it beforehand in case it's potted inside.
BMW describe this as an ioniser and use marketing talk to imply that it creates hydrogen peroxide to sanitise the system.
In reality it's a ceramic plate ozone generator.
Comments
Thanks. That skews my guess, as I thought an end pin might have been ground. I may open it and see if the circuitry is visible enough to work out the pin functions.
Big Clive
2020-06-10 19:04:28 +0000 UTCThe ionizer is Upstream of the evaporator. It causes partial ionization of the air which controls bacterial growth. It is controlled internally via a module. It creates high voltage which is sent to a ceramic plate that has a hard glass coating. The ionization creates hydrogen peroxide. Electrical conductors are attached at the front and rear side. An AC voltage of approximately 3kv is applied. The unit is controlled by the a/c control module in the vehicle via pulse width modulation. The pulse width allows communication between a/c control module and ionizer. The following are the pin outs for the ionizer, Pin 1 voltage supply; 13.5 volts, Pin 2 ground, Pin 3 PWM. If you need more information let me know and I will try to help.
2020-06-09 20:37:20 +0000 UTCThe eBay listing says Genuine BMW 5 7 Series F07 F10 F11 F01 F02 F03 F04 Ozone Generator Sensor
Big Clive
2020-06-09 18:40:07 +0000 UTCWhat model and year
2020-06-09 14:22:58 +0000 UTCThat's an interesting circuit. The ac control sends a square wave to the module. The module then chops up the square wave to send feedback. The ac control would have to drive that line with a resistor. Or maybe an open collector. The module has the resister to pull the line high. It just needs to be pulled low to send the square wave either direction.
Nani Isobel
2020-06-09 03:28:50 +0000 UTCThat thing looks like alien tech...
Michael Gilchrest
2020-06-09 02:45:24 +0000 UTCThat is plausible. I think the common person might think car+ozone=smog.
Jason Brinkerhoff
2020-06-09 02:19:07 +0000 UTCThat could work. I wondered if they were just trying to avoid saying "ozone".
Big Clive
2020-06-08 22:32:36 +0000 UTCCool! I'll have H2o too!
Michael Thompson
2020-06-08 22:17:07 +0000 UTCThe page suggests the ozone reacts with condensation within the aircon system to produce the hydrogen peroxide.
2020-06-08 21:39:26 +0000 UTChttps://www.newtis.info/tisv2/a/en/f10-520d-lim/components-connectors/components/components-with-b/b88-ioniser/XWEl5YS
2020-06-08 21:34:43 +0000 UTCPWM in will probably look like a diode toward another pin, and supply in behave like a capacitor?
Andy Brown
2020-06-08 21:33:02 +0000 UTCSame one as I found,
Mike
2020-06-08 21:30:52 +0000 UTCSee if you can find a Haynes manual diagram for it. I'd be expecting there to be a canbus port to activate it...
Pixscotland
2020-06-08 21:26:21 +0000 UTCIf you know which model of BMW it is from you could try searching for a copy of the ETM (electronic troubleshooting manual) which are the wiring diagrams for the entire car.
2020-06-08 21:24:58 +0000 UTCOr alternatively which car (series and year) it is from
Trond Jarle Pedersen
2020-06-08 21:22:18 +0000 UTCPossibly this? https://www.newtis.info/tisv2/a/en/f10-520d-lim/components-connectors/components/components-with-b/b88-ionizer/XWEl5YS
2020-06-08 21:22:12 +0000 UTCDo you have the part number?
Trond Jarle Pedersen
2020-06-08 21:19:07 +0000 UTC
