WPS500X Pressure transducer back leakage tests

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Steve Smith
Pico Staff Member
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Posts: 633
Joined: Sun Aug 25, 2013 7:22 am

Re: WPS500X Pressure transducer back leakage tests

Post by Steve Smith » Thu Feb 11, 2016 11:51 am

Thank you for the image as this helps and opens up another avenue to explore.

I have included another alternative that should be tested too.
CONNECTION METHOD.jpg
Not sure of the results here or how they will differ?

I am sure they will all demonstrate certain characteristics but I do like your line of thinking HBR and Tode as the connection is far simpler. (Especially for a road test)

Once again I will test these configurations and post back when I can.

Take care.......Steve

volrem
TwoWaves
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Location: Estonia

Re: WPS500X Pressure transducer back leakage tests

Post by volrem » Thu Feb 11, 2016 1:50 pm

Hi

I have tested all three options on same car. Results are different and when I have time I'll show some results.

hbr
TwoWaves
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Re: WPS500X Pressure transducer back leakage tests

Post by hbr » Thu Feb 11, 2016 10:17 pm

Hello Volrem, I hope you find some time to show the difference between the measurements. What's in your opinion the best way to test the back leakage?

Kind regards.

victor2k
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Re: WPS500X Pressure transducer back leakage tests

Post by victor2k » Thu Jan 17, 2019 1:21 pm

Hello,
Today I made some captures on a piezo injectors return using connection from post 20 (I didn't know the pressure on return,specified is 10 Bar),the fuel system work good.
Until now I don't know how to read this raw data,if someone have an idea ... :D
Best regards
Attachments
Toyota_RAV 4_2006_Diesel_20190117-0002.psdata
(6.21 MiB) Downloaded 16 times
Last edited by victor2k on Fri Jan 18, 2019 6:00 am, edited 1 time in total.

kona
OneWave
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Re: WPS500X Pressure transducer back leakage tests

Post by kona » Thu Jan 17, 2019 10:23 pm

You can see the pulsation of the pump and the pulsation of the injectors at the same time.
If you connect the sensor ONLY to the injectors, you will see a clear signal.
Attachments
2019-01-18_002106.gif
2019-01-18_000038.gif
2019-01-17_235848.gif

victor2k
TwoWaves
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Posts: 267
Joined: Thu Jan 28, 2016 7:17 am

Re: WPS500X Pressure transducer back leakage tests

Post by victor2k » Fri Jan 18, 2019 6:12 am

Hello,
I must disconnect the feed pump to see the clear signal :D
My mistake ,I didn't know about the second non-return valve between the 5 th injector and the injectors return...
InkedCapture_LI.jpg
My measurements was made on piezo injectors,all posts until now was on electromagnetic injectors :!:
P.S.:I checked again on the car,the non-return valve from 5th injector/feed pump and return rail will be found only after 2008 year but not on my car,so what I measured was only the injectors return :?
Here is a new capture from a 2009 year engine
Toyota_RAV4_2009_Diesel_20190122-0001.psdata
(2.52 MiB) Downloaded 7 times

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