cylinder pressure sensor

[ryniobl]

I had problem with then, they just ignored me.

Maybe your Email was lost in spam box.Sometimes when i sending Emails to US I have to use US proxy,then I getting response.

[MWfire]

I asked if they can send 10 sensors ,and they said ok with 10%off and 140$ for shipping
Spark plug cost about 300$,but I have made one myself for free well almost.I destroyed many before I have done one.Now its easy.I will come up with some pictures soon.

Can you send me direct email of your conntact?
I allready made some software and hardware that implemate in vems for logging and maybee closed loop spark control. But I need two spark plugs to test that.

[ryniobl]

PM sent

[tonci]

What are expected cylinder pressures on high boost gasoline engines?
Have you asked for the price of 250 bar sensor?

[ryniobl]

What are expected cylinder pressures on high boost gasoline engines?
Have you asked for the price of 250 bar sensor?

Here you have something 
http://www.harleyc.com/prelude/articles/AllAboutMeanEffectivePressure/default.html
http://www.epi-eng.com/piston_engine_technology/bmep_performance_yardstick.htm
http://www.bmepfuelandtuning.com/html/what_is_bmep_.html

I spoke to them first about 200Bar sensor and they didn't say that is different price.The only difference was AutoPSI-TC(TemperatureCompensated) is about 100$ more expensive than AutoPSI-S .They said also 200Bar one has to little accuracy for partial/low throttle tuning of street engines.
Keep in mind all units are imperial

[multiplex]

any updates on this?

[tonci]

I asked if they can send 10 sensors ,and they said ok with 10%off and 140$ for shipping
Spark plug cost about 300$,but I have made one myself for free well almost.I destroyed many before I have done one.Now its easy.I will come up with some pictures soon.

Do you have any pictures of your modded spark plug.

[ryniobl]

Do you have any pictures of your modded spark plug.

Finally i got that sensor 
Look at the pictures here http://picasaweb.google.com/ryniobl77/CylinderPressure#
Read comments under each picture

[multiplex]

i love the progress!

what are you using to collect the data at this point?  do you need to sample data at a certain time?

[ryniobl]

i love the progress!

what are you using to collect the data at this point?  do you need to sample data at a certain time?

Oscilloscope with timebase set at 5-10us works fine 

[stevieturbo]

So basically you are drilling a port right through the steel body of the plug so it can access the chamber ?

The fitting the sensor into the plug body ?

Wont that damage the plug at all ? Or does it still perform ok ?

Interesting stuff.

[ryniobl]

So basically you are drilling a port right through the steel body of the plug so it can access the chamber ?

Yes

The fitting the sensor into the plug body ?

Yes

Wont that damage the plug at all ? Or does it still perform ok ?

No.It works fine.

Interesting stuff.

 

[multiplex]

are you triggering off of something? how do you start the logging, reference tdc? spark?

[rob@vems.co.uk]

This thread is useless without pictures and data

[MWfire]

nice!