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Title: Knock and ally or iron blocks Post by: opticaltrigger on March 01, 2019, 01:11:28 PM Hi guy's,
I've had this on my mind for a while now and I honestly don't know what the answer is, so I thought I'd just put it out there and ask for some opinions on the matter. I maybe way off the mark here, but as I said I don't know. It seems to me that when knock occurs and it's shock wave, for want of a better term, is transmitted through the block to the knock sensor. The knock, if you like, would be a harder one through iron than it would be through aluminium. Is this the case? Or is there no difference at all? And if it is. Is there a difference in the sensors and there signal sample windows? All the very best guy's O.T. Title: Re: Knock and ally or iron blocks Post by: vwaudiguy on March 01, 2019, 06:57:21 PM The OEM's calibrate the sensors/sensing algorithms/filtering to listen for specific frequencies @ specific times. Yes, it's different for every engine, block type, sensor location, etc.
Title: Re: Knock and ally or iron blocks Post by: opticaltrigger on March 03, 2019, 12:27:16 PM Many, many thanks to you for the reply on that. It sets it at peace in my head now...
All the very best, O.T. |