Quote:
Originally Posted by t vago
The code already can display L/hr... but alternating between L/hr and L/100km is an interesting idea. Or did you mean a big numbered L/hr display?
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Haven't found that. Maybe that's because still don't know how exactly setup my custom screen.
I wasn't thinking of big numbered display for L/hr, that's not necessary I think. I was thinking of alternating instant FE display values from l/100km to l/hr when car is not moving. Then you can both see FE when car is moving and engine load when it's idling. It's good for modders to know that value when changing A/C, alternator or PS setup to limit engine load. I was using that with previous code, to see how engine load is changing when for example I'll turn the headlights on or blower.
Quote:
Originally Posted by t vago
The graphs were more of a visual aid to see if a modification (aero mod or engine mod or driving style change) changed anything. The DifFE/time might be generally useful - that ScanGauge E has one, so I figured that MPGuino should also have one.
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Yes you're right DifFE/time is the most useful graph and I was driving with it for a while.
Quote:
Originally Posted by t vago
Engine temperature reading might be tricky, especially if you're just reading the voltage going from the existing ECT sensor to the existing ECM. They sometimes will use two different circuits to supply current to the ECT sensor, depending on engine temperature and internal logic. The low temperature circuit will drive the sensor with a lower current, and the high temperature circuit will use higher current. This is to prevent overdriving the ECT sensor and heating it up at low engine temperatures, while providing accurate ECT readings when the engine is warmed up.
This graph, supposedly for a 1995 Cadillac De Ville, shows a graph of voltage vs engine coolant temperature - note how the voltage changes at 50 C. |
Berta has double sensor setup. One is working for ECU purposes and I don't want to mess up with that. Second one is working with temp gauge and I want to hook up this circuit. I've checked Voltage/temp characteristics some time ago of this circuit and all I need is to change the code to get proper readings. I have everything hooked up to my MPGuino already.