Search found 50 matches

by Benkku
Wed Jan 04, 2012 8:39 pm
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 82
Views: 384658

Re: NTK L2H2 New Linearisation

So what is the difference between NTK LZAxx wideband sensor types? L=Linear (wide band) Z=Zirconia sensor A=18x1.5 mm thread xx=number=sensor design (type of construction/mechanical design) 06 = Gasoline 07 = Gasoline 09 = Gasoline -> L1H1 (Honda sensor is LZA09-E1) 11 = Gasoline 15 = diesel applica...
by Benkku
Sat Dec 31, 2011 3:07 am
Forum: Technical Deposit
Topic: Turbo speed sensor
Replies: 5
Views: 23734

Re: Turbo speed sensor

BorgWarner has an rotational speed sensor for the EFR series turbos (PN 179430), this could be adapted to other compressor housings also. Eddy current measurement principle, blade counting, output square wave TTL 50% duty cycle, frequency proportional to speed. Cost fex. 140 USD, from Treadstone Per...
by Benkku
Tue Dec 27, 2011 7:40 pm
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 82
Views: 384658

Re: NTK L2H2 New Linearisation

Yes, newer type - might be laser trimmed.
by Benkku
Tue Dec 27, 2011 3:28 pm
Forum: General Syvecs Chat
Topic: Rotary switches for calibration changes, type question
Replies: 33
Views: 66429

Re: Rotary switches for calibration changes, type question

Yeah right... One must need to realize, that 'cabin temperature' is not same, than temperature inside instrument cluster or panel. Agree, that the whole picture must be seen always, but the typical temperature differences in places where switch is usually installed is 'easily' over 30 degrees. Cars ...
by Benkku
Tue Dec 27, 2011 1:52 pm
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 82
Views: 384658

Re: NTK L2H2 New Linearisation

One note about using 'predefined' calibration file, ie. file other than which matches to actual calibrated sensor. One can't use (even if same sensor type) calibration file, which is made to/with other sensor. That is why the sensor connector contains calibration resistor, if the resistor value diff...
by Benkku
Sat Dec 24, 2011 2:03 am
Forum: General Syvecs Chat
Topic: Rotary switches for calibration changes, type question
Replies: 33
Views: 66429

Re: Rotary switches for calibration changes, type question

For me, that's the nail in the coffin for diodes... ...The only argument for using diodes is if the voltage at the top of the chain is unknown. Nail in the coffin - indeed. One note yet, needs to say... I think that the voltage at the top of the chain is always known, be it Syvecs or any other ecu,...
by Benkku
Mon Dec 19, 2011 11:51 pm
Forum: Technical Deposit
Topic: NTK L2H2 New Linearisation
Replies: 82
Views: 384658

Re: NTK L2H2 New Linearisation

I think that 'it just', is difference between L1H1 and L2H2 types. Their curves differs somewhat. After all, 'replacement' sensors work in vehicles where intended to use as an replacement - so mimicking original functionality with proper accuracy. Some of those products and (names) are 'just repacke...
by Benkku
Mon Dec 19, 2011 5:31 pm
Forum: S6 GP/PnP Technical
Topic: Knock Frequency
Replies: 4
Views: 9682

Re: Knock Frequency

No knock, but sensor resonant frequency, so called '2nd order sensors' are self resonating in nature, producing largest output voltage at resonant frequency.

Fex.
ERAS-KN - Non-Resonant Knock Sensor, ERAS-KR - Resonant Knock Sensor
http://www.ngkntk.co.jp/english/product ... as-kn.html
by Benkku
Sat Dec 17, 2011 8:31 pm
Forum: General Syvecs Chat
Topic: Rotary switches for calibration changes, type question
Replies: 33
Views: 66429

Re: Rotary switches for calibration changes, type question

I think it's better to use diodes instead of resistors for the simple fact that the body drop on a diode is ALWAYS 0.6~0.7V provided the voltage of the source, in this case a pull-up 5V source, is sufficient to drive all the diodes into conduction. If you would use resistors then the voltage drop o...
by Benkku
Fri Dec 16, 2011 1:39 pm
Forum: S6 GP/PnP Technical
Topic: Knock Frequency
Replies: 4
Views: 9682

Re: Knock Frequency

Measure - take sample, for example with Windows audio recorder and analyze it using Audacity or with some other spectral application. If the resonant frequency is around 5.7-6 kHz then it's 'usual' type, if doubled then 2'nd harmonic tuned one. From memory Subaru has first order sensor, but measure ...