How an ECU works?
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How an ECU works?
Since I joint the forum I started to hear, ECU, Fuel Management......Computer stuff on our cars, I wonder how they work (functionality, principle, design......), anyone can tell me?
#3
Got Boost?
On our cars the fuel system is pretty primative. Its analog, so there really isn't any 'computers' to speak of. The ecu, besides emissions, just adjusts the injectors' pulse width based on RPM and the reading from the AFM, and temperature sensors. Pretty simple stuff...
#6
Got Boost?
I was talking about the 1st generation OEM EFI systems, like those installed in the SE. The 2nd generation EFI sytems are digital, and are controlled by some sort of microcomputer. All later generations of RX-7 from 86 on, use a digital system.
Haltechs, Motecs, etc. are expensive because they're acurate, and they're tunable. Fuel only ecus still aren't that hard to make. Megasquirt is a DIY fuel only ecu, that if your interested in how an ecu works, I suggest you look into it. The part that is crucial (and thus adds expence) is the ignition portions of these ecus.
Haltechs, Motecs, etc. are expensive because they're acurate, and they're tunable. Fuel only ecus still aren't that hard to make. Megasquirt is a DIY fuel only ecu, that if your interested in how an ecu works, I suggest you look into it. The part that is crucial (and thus adds expence) is the ignition portions of these ecus.
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#9
Absolute Power is Awesome
If you ever have a question on how something works, try www.howthingswork.com first.
http://auto.howstuffworks.com/car-computer1.htm
http://auto.howstuffworks.com/car-computer1.htm
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