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Old 11 August 2017, 12:37   #1
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Fuel remaining and fuel usage

I was just about to treat myself to a simrance or lowrance plotter, when I read fuel remaining could not accurately be displayed based on fuel burn nmea data without an additional memory module. As a result I would like to know if anyone knows of any manufacturers displays that will provide this information without having to spend extra money. It's possible lighthouse equipped ray marine do but I'm getting confused by it all

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Old 11 August 2017, 18:26   #2
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does it assess much fuel is left based on how much a transducer says you've used subtracted from how much fuel it believes is in the tank?
Or do you take an NMEA output from a fuel gauge and configure the shape & height of the tank plus maybe the non-linearity of the sender?
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Old 12 August 2017, 04:23   #3
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Originally Posted by simonl View Post
does it assess much fuel is left based on how much a transducer says you've used subtracted from how much fuel it believes is in the tank?
Or do you take an NMEA output from a fuel gauge and configure the shape & height of the tank plus maybe the non-linearity of the sender?


It uses the fuel burn data from the engine ecu. You tell the head unit the size of the fuel tank & how much fuel there's in it, it then deducts the amount of fuel used by the engine. The memory module requirement is dependant on the engine, the Suzuki engine interface has it built in, the Evinrude doesn't, so an additional module is required. The module is required so that the system can store the fuel usage between engine switch on-off. Shape of tank is irrelevant.
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Old 12 August 2017, 04:39   #4
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Like pikey said. But my query is do any other manufactures such as raymarine or garmin include the memory module in the mfd? Or are they all the same and require it if you don't drive a Suzuki? It's an extra 100 on lowrance
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Old 12 August 2017, 11:49   #5
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Like pikey said. But my query is do any other manufactures such as raymarine or garmin include the memory module in the mfd? Or are they all the same and require it if you don't drive a Suzuki? It's an extra 100 on lowrance


As far as I'm aware no unit has the built in memory. The memory module is around the 85 quid mark
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