What is causing the low frequency vibrations?

Ask questions relating specifically to the PicoDiagnostics NVH equipment and software here.

What is causing the low frequency vibrations?

Postby LarsT » Fri Mar 03, 2017 5:18 pm

Hi, I am still learning how to use my new NVH kit sorry if this is too simple of a question. The customer is complaining of a steering wheel vibration, I recently replaced the tires - two of them had high roadforce readings, however the customer is still complaining of a vibration. I noticed a low frequency that is high but not labled. I thought is might be caused by the road but just curious if anyone could give me and answer.

Thanks Lars
Attachments
pico,Desart, route 24 east.pddata
(699.8 KiB) Downloaded 43 times
LarsT
Newbie
 
Posts: 5
Joined: Wed Jan 04, 2017 1:08 am

Re: What is causing the low frequency vibrations?

Postby LarsT » Tue Mar 07, 2017 7:41 pm

I have read that the lower frequencies are caused by the cars mass and its suspension system.
LarsT
Newbie
 
Posts: 5
Joined: Wed Jan 04, 2017 1:08 am

Re: What is causing the low frequency vibrations?

Postby tode » Tue Mar 07, 2017 8:57 pm

The frequency you see is very low 1,4 HZ , it means 1,4 fluctuations at second for me isn' t possibile the cause are tyres o transmission because their frequency is much more high than 1,4 hz.
If the vibration that you feel is 1,4Hz (1,5 at second), i think the problem come from powersteering .
tode
OneWave
OneWave
 
Posts: 48
Joined: Fri Jun 20, 2014 8:59 pm

Re: What is causing the low frequency vibrations?

Postby Martinjensen » Tue Mar 07, 2017 8:59 pm

Hi Lars.

I have previously asked that question.
See this thread: topic15921.html Question 3, and the reply from Pico's NVH expert Steve Smith.

Hope this helps.

Regards Martin
Martinjensen
OneWave
OneWave
 
Posts: 36
Joined: Wed Feb 13, 2013 8:22 pm
Location: Denmark

Re: What is causing the low frequency vibrations?

Postby LarsT » Tue Mar 07, 2017 10:53 pm

Thanks Martin, I thought I had seen it but it was not coming up in my searches.
Lars
LarsT
Newbie
 
Posts: 5
Joined: Wed Jan 04, 2017 1:08 am


Return to PicoDiagnostics NVH

Who is online

Users browsing this forum: No registered users and 0 guests