Maretron TMP100 - Avoid Diesel Marine Engine Over Heating Failures with Raw Water and EGT Sensors
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- Опубліковано 6 січ 2021
- Today we’re talking about how to avoid diesel marine engine overheating failures with a Maretron raw water exhaust temperature gauges and (EGT) exhaust temperature sensors, gauges and alarms These are some of the most critical monitoring systems on diesel engines and are often completely missing from most Diesel Marine engines.
I’ve worked on gas engines all of my grown life starting with a chevy 396 325hp big block in my first car, a 1967 SS Camaro. So when we bought our first boat that had twin Volvo TAMD63 diesels, I had no idea that I had no idea of the differences between the two types of engines. Two boats later we now have Volvo D6 370hp diesels and a lot of lessons learned. One of the most significant and potentially costly differences I learned about was the tolerance or lack of tolerance for overheating. For the most part gas engines can overheat and survive. Generally the worst case scenario is a blown head gasket but often, it’s an inconvenience that simply flags a bad thermostat or overdue maintenance.
Not so with a Diesel. One over heating incident can cost you an entire engine that costs easily 10X what a gas engine replacement would be. In a boat, the list of items that can cause an over heating incident can range from things in your control, like closed sea cocks to delayed maintenance but, it can also be from things completely out of your control like a plastic bag being sucked up on your raw water intake. Now one might say I have a coolant temp sensor with an alarm so I’m good! The problem is, by the time your coolant is over temp your engine is over temp and damage has occurred.
To solve this problem there is a pretty straight forward solution, simple sensors, gauges and alarms on your exhaust sprayers. These will show a temp rise often less than a minute after the condition starts and alerts you minutes before your engine can be damaged by overheating.
Ours is post Turbo due to Volvo’s spec
Not the best pre turbo tends to be more accurate by 150-200 degrees showing more accurate cylinder temps. Cummins does that.
Out of spec can show high load conditions like seas and weather but also over propped conditions.
I really like that with twin engines I can start hunting for problems in an engine before they become failures.
Analogue Sensors and Gauges:
Maretron Temperature Sensor amzn.to/35jUWPH
Bosch Temperature Gauge amzn.to/3noY038
Exhaust Gas Temperature K-Type Sensor and Gauge Kit amzn.to/3biQJzu
NEMA 2000 Gauge Modules and Sensors:
Maretron DSM410 display and alarm amzn.to/3sdNmzU
Maretron TMP100 temperature NEMA2000 module amzn.to/3hZpuva
Maretron Internet Gateway amzn.to/3sdNM9s
Maretron Temperature Sensor amzn.to/35jUWPH
EGT K-Type probe amzn.to/2MI36uG
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I first learned about EGTs when I was a jet engine mechanic in the USAF in the early 70s! They are uber important! Great video too!!!!
Thank you for the insight. Crazy they don’t install them OEM.
I’ve never had a catastrophic failure (touch teak) to this day. If you think adding technology, be it sensors, gauges or whatever is expensive try repairs. Realtime information is power but in this case it can literally save one thousands of dollars. And if your in a foreign port, the cost can just skyrocket, up! For all kinds of reasons. Jon, I love it when you TechTalk! The engine room is one of my favourite areas. I swear if I have another pair of she creatures (2 XX) one will be named Onan and the other Gen! Great (way too short) video😎U2!
Thank you Phill! We look forward to and love your thoughts and feedback, it’s one of my favorite parts of launching a new vid. With the winter firmly upon us we have a couple other TechTalks as we dial in the boat for the early Spring.
Onan and Gen would be great additions to a family Christmas card. :-P
I have an older launch with a single 6 cylinder-Yorke diesel engine, only a temp gauage, just fitted a raw water alarm, easy as 123....can set to the appropriate operation temp...after watching this really please I spent thje $173 Kiwi dollars to purchase and an hour fitting- knowing if I have an issue not going to cook my engine, thanks feeling quite happy
Don’t forget about the zinc’s In the heat exchangers. Also a pressure transducer for the raw water side would be a nice gauge also.
Excellent video. I have always felt there should be an EGT gauge for each engine. As a pilot we always had an EGT gauge for the engines. I am going to do this for my cat 3208,s.
The piece of mind while cruising is worth it alone. I’m adding a sensor to our generator too. Garbage like plastic bags in the water love to block intakes at anchorage…
Great video. Starting on this project now. I don't see the links however, am I looking in the wrong place? Looking at my Volvo TAMDs (Detroits), it looks like there might be ports for installing the EGT. I'm not sure how I figure that out...the research begins.
There is also another fault that i notice a lot. some cursers after a run do not allow there engines to cool down from operating temp after a good crews and just shot them off not a good thing and also can cost you big money there is a lot of dissimilar metals in an engine shutting right down can caws a lot of heat best to let them run at idle for 15 min before shutting them down Of course been there the cost was 60 Gs
Good call out!
What tempature is your exhaust when your motor is at temp and how many degrees is your alarm above that? thanks for making this video.
Put them on the generators exhaust as well 😎
good call
Great video, thanks! Looks like the sensors are taped onto the elbow. Is that flue tape?
Thank you! Since we didn’t have a bolt provision to mount the sensor, we used VHB (very high bond) tape on the exterior of the tape and then put foil on the outside of it.
I was going to change it to a high temp tape but, it won’t come off… 😂
Late to this party….but if anyone is listening, where can I go for the “setup” guide. Hardware is installed but how do I setup the views and alarms, etc using N2Kview, chart plotter etc
I'm in the process of having all my electronics upgraded. I will be using Simrad NSS EVO3S 16” hybrid touch (2) and would like to begin monitoring my engine exhaust to begin with possible monitoring of other engine related things. Curious if I should buy the Maretron DSM410 Display or if I can just use the alarm features on my new SIMRADs. I would rather not add another display to my existing dash which has very limited realestate. Has anyone else use the Maretron monitors with their Simrad NSS EVO3S 16”?
Good question. I have Raymarine and they don’t support the NMEA PGN 130316 for EGT. I know Garmin does. I googled Simrad support for 130316 and it is listed in their NMEA 2000 PGNs supported by the NSX MFD/chart plotter. I would recommend double checking with tech support but, it looks like you’re good.
Where did you mount the temperature gauges on your boat?
We used a Maretron DSM410 at our helm to display and alarm for high temps. It’s on our NMEA 2000 network so, some Multi Function Displays like Garmin would also be able to display the EGT and exhaust cooling temps. Unfortunately we have Raymarine MFDs and they don’t support the EGT NMEA PGN so, we’re out of luck there.
Did you install them yourselves? These are things that will make our journey a little bit less tense.
We had the EGT bungs welded into the exhaust risers. Otherwise, the raw water exhaust sensors are just adhered to the exhaust sprayers. Some sprayers have external bolt provisions too. Then it’s just running the cables and configuring the gauges. It’s a pretty straightforward DIY.
@@ElliYacht1
Do you hav e any fuel pressure gauges as well?
We have flow rate sensors as part of our OEM electronic engine monitoring package. Another great tool to understand fuel consumption deviation.
@@ElliYacht1
Good to know. Thanks
How is the raw water exhaust sensor installed?
In a perfect world the exhaust sprayer cans have a plate with a bolt on them to connect the sensor. Unfortunately, ours don’t have those provisions. Another way is to secure them around the can with a large hose clamp. Again, that doesn’t work on ours, as our can inlet takes up the entire width of the can. So, we had to adhere them with 3M VHB tape and add a foil insulation layer on the surface. A compromise but, in practice, they are stuck like hell and aren’t budging.
Thanks for your videos! I am planning to implement this solution, hopefully in the next few weeks. I will chronicle with a video. Jon, I am planning to buy the Maretron DSM410. Are the other parts listed? Maybe it is just the sensors themselves...can you tell me where you purchased those?
And also the TMP100...is this it? This is not needed for the raw water and egt solutions, right? Just nice to have. www.digikey.com/catalog/en/partgroup/tmp100-and-tmp101/56620. My Navigator is a 1999, so all of its sensors are analog
And I figure I will have to run a separate wire for temperature sensors to the helm...and hopefully connect to my Raymarine SeaTalk.
Do these senors have an alarm ?
Yes. The Maretron DSM410 display has a built in alarm. We also added a remote alarm module that would wake the dead, so we can hear it from both helms.