cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor

[AndreyB]

@Maxi has shared http://www.rusefi.com/forum/viewtopic.php?f=8&t=388&p=16466#p16464 a cool idea for cylinder pressure sensor option:

modern diesel glow plugs have pressure sensor build into them. For example Audi A3 VW Golf Glow Plug w/ Pressure Sensor OEM BERU 03L 905 061 F

Smart glow plug part number 059905061H 03L905061F 03L905061E 2009+ VAG TDI
Connector 04L971785

Thread: x?

More info: http://www.beru.com/download/produkte/fachaufsatz_psg_en.pdf (now gone?) we have https://rusefi.com/forum/download/file.php?id=5050

Vout=(0,115+0,004P)*Vs
P - bars
Vs - 5v +-5%

Time to drill a new hole in the Neon head

[AndreyB]

[chevydan6]

DO IT! Where on a neon sohc without hitting water jacket...

[AndreyB]

DO IT! Where on a neon sohc without hitting water jacket...

SOHC
Not really ready to drill my DOHC Miata head. Time to buy DOHC v12 something

[abecedarian]

One thought might be to open up the spark plug boss and fabricate an insert that could thread in which would supply a "tap" out to the pressure sensor while retaining the spark plug.

Depending on the spark plug design- insulator length and such, might even be able to drill and tap the spark plug itself to provide a port for a pressure sensor.

... or not.

[Abricos]

It is a very expensive pressure sensor for 2000 bar it's cost 500$ ...I can not find something cheaper ...

[kb1gtt]

The ebay link in the first post is $25 usd.

[Abricos]

[kb1gtt]

Ah I see. Thanks for the pictures, I understand what you were saying now.

[3gAccord]

This may be a bit old thread... But why add a sensor? Why not do coil on plug with ion sensing? It'd be much simpler in the long run than head mods

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[Abricos]

This may be a bit old thread... But why add a sensor? Why not do coil on plug with ion sensing? It'd be much simpler in the long run than head mods
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Please more detail ...

[3gAccord]

In short, using the plug gap as a sensor. It's definitely complicated but not impossible magic.

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[AndreyB]

In short, using the plug gap as a sensor. It's definitely complicated but not impossible magic.

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that's a different approach, kind of worth a separate topic but both are not on top of the list to be honest.

[3gAccord]

Seems like it'd be the cheapest route. Bosch actually makes a module that connects to their coil on plug units. It'd take some interfacing but it allows very accurate knock prevention in higher end vehicles these days

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[AndreyB]

Bosch actually makes a module that connects to their coil on plug units.

Sounds like you want to start a new topic on ion sensing since this topic is on cheap cylinder pressure sensor option...

[3gAccord]

Fair enough but doesn't ion sensing give a pretty good idea of cylinder pressure?

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[kb1gtt]

Ion Sense is a lengthy topic in itself, and worth of it's own thread. I have started an ion sense thread here http://rusefi.com/forum/viewtopic.php?f=4&t=963

[AldoQ]

Hi
i like to test this sensor, $30 in ebay its ok to experiment, maybe the sensor attached to stainless steel tubing then welded to spark plug
best regrads

[Abricos]

Hi
i like to test this sensor, $30 in ebay its ok to experiment, maybe the sensor attached to stainless steel tubing then welded to spark plug
best regrads

You need pressure sensor for 2000 bar

[stefanst]

Hi
i like to test this sensor, $30 in ebay its ok to experiment, maybe the sensor attached to stainless steel tubing then welded to spark plug
best regrads

You need pressure sensor for 2000 bar

I don't think so. Afaik peak cylinder pressure in gasoline engines is usually 1000psi and lower. So maybe 70bar.

[Abricos]

Oppss sorry not bar ... 2000psi ...
For basic engine ...

Look PDF

[AldoQ]

hi
the beru pressure sensor is for 200 bar
regards

[AldoQ]

hi
im think in put just only one sensor in any way to spark plug just to tune the spark map , is possible ?
regards

[AndreyB]

hi
to spark plug just to tune the spark map , is possible ?
regards

what exactly are you asking about? is it possible to get the sensor somehow into the cylinder? I believe no one here has such experience.

is it possible to read the value from the sensor and display it in the rusEfi console? that would be an easy change, that would be similar to how you can see MAP sensor reason within one engine cycle.

[AldoQ]

if i find the way to use the glow plug to read the pressure in the cylinder, the signal can be used to tune the spark map?

[AldoQ]

Ok
Im waiting for the sensor off eBay 25 Plus Shipping to México

Enviado desde mi Z812 mediante Tapatalk

[mobyfab]

http://bmwmotorcycletech.info/ionization-current-sensing-ignition-susbystem.pdf

Not sur how one could retrofit these.

[AndreyB]

I've heard about Dephi Harley-Davidson a few times already but do we know exact part numbers? Was is ever used by somebody at the larger scale, maybe GM?

[KLAS]

i've been told GM uses ion sensing here in Europe in some Opel engines, like this one https://www.ebay.de/itm/OPEL-VAUXHALL-2-2-ASTRA-VECTRA-ZAFIRA-1-6i-IGNITION-COIL-Z%C3%9CNDSPULE-16229719/201939980206?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

[AndreyB]

i've been told GM uses ion sensing here in Europe in some Opel engines, like this one

this looks similar to the SAAB ignition cassete? the obvious down side of the cassete is that it would be impossible to fit it on a different engine. I wish there was some individual coil option from a standart ion sensing setup, ideally with some smart and documented coils