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

Hardware inside and outside of the ECU
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AndreyB
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cheap cylinder pressure sensor option - smart diesel glow plug with pressure sensor

Post by 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 :)
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AndreyB
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Re: cheap cylinder pressure sensor option?

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chevydan6
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Re: cheap cylinder pressure sensor option?

Post by chevydan6 »

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

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Re: cheap cylinder pressure sensor option?

Post by AndreyB »

chevydan6 wrote: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 :)
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abecedarian
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Re: cheap cylinder pressure sensor option?

Post by 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.
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Abricos
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Re: cheap cylinder pressure sensor option?

Post by Abricos »

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

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kb1gtt
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Re: cheap cylinder pressure sensor option?

Post by kb1gtt »

The ebay link in the first post is $25 usd.
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Re: cheap cylinder pressure sensor option?

Post by Abricos »

Image
Image
Image
Image
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kb1gtt
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Re: cheap cylinder pressure sensor option?

Post by kb1gtt »

Ah I see. Thanks for the pictures, I understand what you were saying now.
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3gAccord
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Re: cheap cylinder pressure sensor option?

Post by 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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Re: cheap cylinder pressure sensor option?

Post by Abricos »

3gAccord wrote: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 ...

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Re: cheap cylinder pressure sensor option?

Post by 3gAccord »

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

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Re: cheap cylinder pressure sensor option?

Post by AndreyB »

3gAccord wrote: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.
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Re: cheap cylinder pressure sensor option?

Post by 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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Re: cheap cylinder pressure sensor option?

Post by AndreyB »

3gAccord wrote: 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...
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Re: cheap cylinder pressure sensor option?

Post by 3gAccord »

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

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Re: cheap cylinder pressure sensor option?

Post by 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
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AldoQ
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Re: cheap cylinder pressure sensor option?

Post by 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

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Re: cheap cylinder pressure sensor option?

Post by Abricos »

AldoQ wrote: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
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You need pressure sensor for 2000 bar

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Re: cheap cylinder pressure sensor option?

Post by stefanst »

Abricos wrote:
AldoQ wrote: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.

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Re: cheap cylinder pressure sensor option?

Post by Abricos »

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

Look PDF
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AldoQ
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Re: cheap cylinder pressure sensor option?

Post by AldoQ »

hi
the beru pressure sensor is for 200 bar
regards

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Re: cheap cylinder pressure sensor option?

Post by 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

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Re: cheap cylinder pressure sensor option?

Post by AndreyB »

AldoQ wrote: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.
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Re: cheap cylinder pressure sensor option?

Post by 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?

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Re: cheap cylinder pressure sensor option?

Post by AldoQ »

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

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Re: cheap cylinder pressure sensor option?

Post by viya0414 »

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

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Re: cheap cylinder pressure sensor option?

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Re: cheap cylinder pressure sensor option?

Post by 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?
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