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#1
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Fuel Sensing
Hi, I need to know how much fuel is present in the tank of a car. I
hope is possibile to interface the signal from the tank to the dashboard indication. Does somebody knows how to interface the existing signal to exctract data? I'm able to buld an hw&sw interface. Thanks for you help. |
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#2
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"FreeDado" > wrote in message oups.com... > Hi, I need to know how much fuel is present in the tank of a car. I > hope is possibile to interface the signal from the tank to the > dashboard indication. Does somebody knows how to interface the existing > signal to exctract data? I'm able to buld an hw&sw interface. Formula One cars have problems with monitoring exactly how much fuel is remaining in the tank, and they spend millions on those cars. They do not, as yet, have a method that is accurate enough for the situations they encounter. The senders in most automotive gasoline tanks are meant to provide relative indications of the fuel charge, nothing much more. You could diddle with them and improve them, I have little doubt, but they still may not do what you want. Exactly what are you trying to accomplish? |
#3
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FreeDado wrote: > Hi, I need to know how much fuel is present in the tank of a car.\ It's called the fuel gauge...?? > I > hope is possibile to interface the signal from the tank to the > dashboard indication. Does somebody knows how to interface the existing > signal to exctract data? I'm able to buld an hw&sw interface. Seriously? How accurate do you need to be? You could rob the signal from the fuel gauge sender, which is just a resistance value. Is this something for mass production or the aftermarket? |
#4
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Won't the built-in car computer give you what you are looking for?
Which of the following do you need to know and to what level of accuracy: 1. How much total fuel is in the tank. The precise number of total gallons remaining at any one point in time. 2. How much usable fuel is in the tank. Total number of gallons remaining less the unusable portion the pickup can't reach. 3. How many miles you can drive the car based on the remaining usable fuel and your average fuel usage. 4. Your average and current fuel usage. 1. and 2. are very difficult to measure precisely without actually placing the fuel in a container of known size and shape. It is all but impossible to measure with a degree of precision because fuel sloshes around and moves the unit up and down. Also gas tanks are notoriously lumpy (polygonal) making an estimate with a dipstick or float subject to lots of error. 3. and 4. can be estimated more or less by using trip computers available in most cars. They too are subject to errors in reading remaining fuel, as we have all observed. |
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