EGT and Boost via nmea2000

Discussion in 'Diesel Engines/Drives/Transmissions/Props' started by Irie308, Oct 18, 2021.

  1. Irie308

    Irie308 Well-Known Member GOLD Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
  2. quality time

    quality time Well-Known Member

    Oct 30, 2007
    Upper Chesapeake Bay
    2003 480DB
    QSM11's
    I'm not familiar with that unit but I'm doing it with a Maretron TMP100 and probes from amazon. Also gives me the ability to display engine room temp over my network.
     
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  3. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    Back Cove 37
    AB Ventus 9VL
    Cummins QSC 8.3 600
    Panbo reviewed their pressure sensor for Racor filters and liked it.
     
    Irie308 likes this.
  4. JHornsby3

    JHornsby3 Well-Known Member

    718
    Nov 10, 2020
    Sheridan Oregon
    "Steele'y Tutz"
    1992 300 Sundancer
    Twin 4.3L W/Alpha One Gen II
    I am curious here. Does this system go through a MFD or through the Vessel View? I have always been a analog type when it comes to the critical reading info. Boost is one that is not as critical but the EGT is very critical. And with new technology comes better electronics, I know. But how reliable is the electronics on boats verses analog? I went with the electronic monitor on my pick up. And I sometimes question the readings, even though everyone says they are spot on.
     
  5. Irie308

    Irie308 Well-Known Member GOLD Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    According to them it should be easily added to a MFD via nmea2k. I like this idea as i can customize my screens to show critical items. You can also setup alarms on your mfd so curious how well that all plays together.
     
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  6. alnav

    alnav Well-Known Member PLATINUM Sponsor

    Sep 16, 2009
    West River, MD
    40 MY
    QSB 425
    Mainly because I am using some of their other products, I am looking at this brand of sensor:
    https://www.yachtd.com/products/exhaust_gas.html
    Also seems to be quite a bit less expensive. Another consideration is that it has a Load Equivalence Number (LEN) of 1 vice 2 in the AOS version in Post #1, which may be important as our N2K networks grow.
     
  7. b_arrington

    b_arrington Well-Known Member GOLD Sponsor

    Feb 21, 2007
    Setauket, NY
    Back Cove 37
    AB Ventus 9VL
    Cummins QSC 8.3 600
    I think the answer is..."it depends".

    A modern MFD that supports N2K should be able to display the data. It'll simply pick it up from the N2K network.

    The VesselView may be more involved, or not. It's going to depend on what you have, how it communicates, and if it's connected to an N2K network. If I recall correctly, older VV displays may have only had the SmartCraft connection. There's an optional gateway to get the SmartCraft and it's data could be sent to an N2k network via a converter or gateway. Not sure if those were bi-directional to bring N2K data back into the VV.

    Later VV models such as the VV 502, 702, 703, and 903 have an N2K port built directly into the back of the unit. They can take data from the N2K network, and also work with the VV Link device. VV Link is a box that takes SmartCraft signals and converts them to N2K data. It's specifically intended to work with the VV displays I listed above, plus some Simrad and Lowrance MFDs.
     
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  8. JHornsby3

    JHornsby3 Well-Known Member

    718
    Nov 10, 2020
    Sheridan Oregon
    "Steele'y Tutz"
    1992 300 Sundancer
    Twin 4.3L W/Alpha One Gen II
    My Lowrance HDS Gen 3 has the connection on the back. But the 92 DA is before analog. But that makes sense to me. I'm sure the tech is far better in a boat than in a vehicle. I have always worried about the electronics showing it's data verses actual. But I am sure the EGT in a boat would be not as much a concern as in a vehicle pulling a hill. A lot easier to back down while on a cruise than pulling a steep hill.

    Just curious about an interesting topic for me.
     
  9. Strecker25

    Strecker25 Well-Known Member PLATINUM Sponsor

    Nov 20, 2014
    Rochester, NY
    2002 410DA
    Caterpillar 350HP 3126
    I went with mechanical boost/egt in a “turbocator” gauge because I didn’t have N2K at the time. I like the look of these new sensors you guys posted though, pretty inexpensive if you already have the network in place.

    here is what my mechanicals look like, lower left and right. Ignore the high egt on the port engine, it was prior to the replacing the turbo
    56FE84B5-D337-4852-A991-53B7D97D6498.jpeg
     
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  10. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    It is strictly NMEA 2000, both Yacht Devices and AOS. I know Garmin supports the EGT senders, their newer MFD's 76xx series on and the GMI20 as well. Maretron support just about everything.

    I converted my Detroit Diesels over to digital with Actisense EMU-1's and it was the best thing I ever did. I trust the digital read out more then the electronic gauge(s),they are removed and only have digital now. I use to stare at the temp gauge's and now only glance at it once in awhile as I trust the digital alarms as well.
     
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  11. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
  12. JHornsby3

    JHornsby3 Well-Known Member

    718
    Nov 10, 2020
    Sheridan Oregon
    "Steele'y Tutz"
    1992 300 Sundancer
    Twin 4.3L W/Alpha One Gen II
    I do love the fact that with the digital monitoring, you can set your warnings. Makes it easier to enjoy the ride and not have the stress of watching it so much. Set the alerts and warnings for the highs and the warnings for the lows. As well as the ability to monitor more systems than just the analog gauges do.

    Someday I might look into setting up digital monitoring on the gas engines. There is a lot that should be looked at that the factory gauges doesn't cover. And the factory gauges can't be trusted very much if at all. But still better than nothing.

    Do diesel engines in a marine application run a high EGT? And if it's a concern, has anybody ever used a water/meth injection to combat this? I used it in a vehicle and could drop EGT's by 500* with a small amount of water only.
     
  13. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    I actually have one of those to test with. I haven't installed it yet as I ran into a problem, I need four as I have v-6's and Garmin only supports one sensor per engine it seems, Maretron supports many.
     
  14. dtfeld

    dtfeld Water Contrails GOLD Sponsor

    Jun 5, 2016
    Milton, GA
    410 Sundancer
    2001
    12" Axiom and 9" Axiom+ MFD
    Cat 3126 V-Drives
    One thing you need to look at is make sure your MFD, or display can actually display the N2K PGN for EGT. Last I looked Raymarine and Garmin could not display this info generated from the Maretron TMP100.

    I’d have to look back at my notes to find the PGN, but that issue is what drove me to using Maretron displays.
     
  15. Strecker25

    Strecker25 Well-Known Member PLATINUM Sponsor

    Nov 20, 2014
    Rochester, NY
    2002 410DA
    Caterpillar 350HP 3126
    EGT can be indicative of overloading and generally speaking the lower EGT (to a point) at a given RPM equals a longer engine life. It can also be caused by low boost, fouled intake path, and other restriction. In our case we had a boost leak through the wastegate lowering boost pressure and engine power ultimately raising EGT.

    High EGT also would typically mean high cylinder temps.

    directly lowering egt with injection would likely mask the root cause of the issue
     
  16. alnav

    alnav Well-Known Member PLATINUM Sponsor

    Sep 16, 2009
    West River, MD
    40 MY
    QSB 425
    Orlando, did you install the end-September Garmin update? They made some changes to the way engine data is manipulated and displayed. Haven't figured it out completely as yet since (as usual) the documentation sucks. But, one thing I noticed is that engine data is less "rigid". For example, if I had 3 "engines" (one being the generator mover), each gauge always had 3 instances on-screen even if there was no data for a particular parameter. That linkage appears to be broken and now only active parameters have a gauge. I'm hoping it might work the other way around and there can be multiple gauges per engine if the sensors are there.
     
  17. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    The newer Garmin's including the 76xx series support the Extended Temperature PGN 130316.

    https://www8.garmin.com/manuals/web...A/EN-US/GPSMAP_7x3_9x3_12x3_Install_EN-US.pdf
     
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  18. dtfeld

    dtfeld Water Contrails GOLD Sponsor

    Jun 5, 2016
    Milton, GA
    410 Sundancer
    2001
    12" Axiom and 9" Axiom+ MFD
    Cat 3126 V-Drives
    Last I looked, Raymarine didn’t. Seems like only a firmware change, and I put in a feature request 2 years ago…still nothing from RM
     
  19. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    Al, yes I did and noticed the same things you did. And it does seem to make all parameters available if an "Engine" is detected but in typical Garmin fashion, it all must be detected first in order to see it and program it. So yep, only active parameters have gauges. They still haven't fixed the AC Line detection from the Maretron ACM100's (for the generator). But have added a bunch of environmental parameters (weather station stuff). And yes their documentation is the worst, their change log doesn't even capture the PGN list correctly.
     
  20. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    dtfeld likes this.

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