I think it has something to do with a bimetalic strip - a website address or a full explanation would be helpful.
2007-02-22 03:36:17 · 4 answers · asked by habbelot 1 in Cars & Transportation ➔ Other - Cars & Transportation
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2007-02-22 08:48:11 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Not any more. Bimetallic strips used to be used years and years ago before we had electronics... Nowdays, there is a simple ossillator circuit that produces a current every second or so that drives a relay(mechanical switch). The current to the indicator passes through this and is thus controlled on and off when the relay switches. Modern cars have extra electronics to communicate directly with the ECU so that there is continuous monitoring of the indicator and the status of the car.....
2007-02-22 03:38:21 · answer #2 · answered by Charlie Brigante 4 · 2⤊ 0⤋
usually a relay works like the switch that turns your home lights on and off
2007-02-22 03:43:08 · answer #3 · answered by stuartalan w 5 · 0⤊ 0⤋
They all work differently.
Here is a site that should get your answers.
http://auto.howstuffworks.com/fuel-gauge.htm
2007-02-22 03:43:50 · answer #4 · answered by Uncle Red 6 · 0⤊ 0⤋