Turbo speed sensor

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Bigcam
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Turbo speed sensor

Post by Bigcam »

Has anyone used one of these; Garrett Turbo Speed Sensor Kit(Product Code: 781328-0001) with a MS3XV3.57 ? The instructions say it outputs a square-wave signal for data logging but the datalogger will need to multiply the signal to obtain the correct rpm. Can the MS3XV3.57 do this? Is PT4 the correct input for this?
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jsmcortina
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Re: Turbo speed sensor

Post by jsmcortina »

Sounds fine. The MS3 allows a fractional number of teeth, which effectively multiplies as they require.

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Bigcam
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Re: Turbo speed sensor

Post by Bigcam »

Thanks James, will go ahead and wire it up.
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wes kiser
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Re: Turbo speed sensor

Post by wes kiser »

I have been using it with a very similar conditioner BW offers for the EFR for several years. It is solid and drama free. I generally have reliable shaft speed measurements even at idle (3,000 ish shaft rpm on my setup). Never had a high speed dropout either, and the shaft speed agrees well with my operational point with the compressor map (144k measured, map suggest 136 ish k, with some guestimation for inputs).

Definately use PT4 provided the conditioner only outputs a 5v square wave.
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kingtal0n
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Re: Turbo speed sensor

Post by kingtal0n »

wes kiser wrote:I have been using it with a very similar conditioner BW offers for the EFR for several years. It is solid and drama free. I generally have reliable shaft speed measurements even at idle (3,000 ish shaft rpm on my setup). Never had a high speed dropout either, and the shaft speed agrees well with my operational point with the compressor map (144k measured, map suggest 136 ish k, with some guestimation for inputs).

Definately use PT4 provided the conditioner only outputs a 5v square wave.

boost leak check the system religiously at first to ensure you are sealing 100%. Every air molecule that is able to escape the plumbing will result with a higher wheel speed than the airflow you are measuring going into the engine. This is detrimental to performance because it means the exhaust gas pressure goes up when we leak air on the compressor side to compensate, it has to spin faster now to make up for the air molecules the compressor is "throwing away" in order to meet demands and open the gate.
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Re: Turbo speed sensor

Post by Manu »

Bigcam wrote:Has anyone used one of these; Garrett Turbo Speed Sensor Kit(Product Code: 781328-0001) with a MS3XV3.57 ? The instructions say it outputs a square-wave signal for data logging but the datalogger will need to multiply the signal to obtain the correct rpm. Can the MS3XV3.57 do this? Is PT4 the correct input for this?
I come back about this sensor that I need to use soon. The main problem I can see here is that high speed inputs of MS3 processor are rated for 1kHz and that the sensor may output a 2,6kHz signal at 160000 rpm.

https://www.garrettmotion.com/wp-conten ... s_RevE.pdf

Does anyone achieve a working setup, even on PT4 ?

Thank,
Manu

Edit : maybe I misunderstood the input limits and confound with output limits. Also, can this sensor use CAM input (with MAX9926 conditioner) ?
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