keizsr Posted August 1, 2022 Report Share Posted August 1, 2022 Hi g4x storm use I'm thinking of ignition switch input. My vehicle is old and does not have dedicated wiring. Is it simple enough to input 12v output when the key switch is on? The current ignition switch setting is always on. please treat me well Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 1, 2022 Report Share Posted August 1, 2022 The Ign switch digital input is not specifically needed in most cases. It is mostly only used in applications with a stepper motor idle valve which means the ecu needs to stay alive for a while after the engine shuts down so the idle valve can reset and park. In this case the ignition switch input is used to tell the ecu to kill the engine (but ecu stays powered up). In most other applications (solenoid idle valve, drive by wire, or no idle valve) the ignition switch in the car just completely shuts power off to everything including the ecu at the same time. Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 1, 2022 Author Report Share Posted August 1, 2022 Hello Mr. Adamu. I guess the ignition s/w input was not what I thought it was. I would like to make fuelpump an open loop control this time, but I would like to keep the same standard control of the conventional fuelpump, or I am wondering if there is any plan to create a new one. Any suggestions? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 1, 2022 Report Share Posted August 1, 2022 7 minutes ago, keizsr said: I would like to make fuelpump an open loop control this time, but I would like to keep the same standard control of the conventional fuelpump, or I am wondering if there is any plan to create a new one. Not sure what you mean here, how do you want the fuel pump to work? Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 1, 2022 Author Report Share Posted August 1, 2022 Adamu. It seems my translation software isn't doing a good job. fuelpump control changed to openloop But I want to keep the relay control that was used in fuelpump standard control I can't seem to keep it, so I'm wondering if it's possible to make a new one that is the same as the old one? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 2, 2022 Report Share Posted August 2, 2022 What model car? Can you do a diagram of how the fuel pump is wired. Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 2, 2022 Author Report Share Posted August 2, 2022 Hello Adamu I'm sorry that I didn't communicate well I would like to organize it a bit so that I can convey it well. Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 2, 2022 Author Report Share Posted August 2, 2022 I have two fuel pumps Can it be controlled under the following conditions? Pump 1 fuel pump standard control Pump 2 Open loop control Toyota FPC Current usage Pumps 1 and 2 are standard control of G4X fuel pumps Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 2, 2022 Author Report Share Posted August 2, 2022 If we use an open loop to control pump 2, how should we control pump 1? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 2, 2022 Report Share Posted August 2, 2022 Do you need both pumps to run at first power up for priming or just pump 1? Do you want pump 2 run all the time or only under certain conditions? Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 2, 2022 Author Report Share Posted August 2, 2022 Mr. Adamw, I apologize for the inconvenience. Yes I want both to be ON when the power is turned on Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 2, 2022 Report Share Posted August 2, 2022 Ok, if I understand you correctly, this example below would work. To explain Pump 2 operation, for engine RPM below 401 pump 2 will run at 50% speed only when pump 1 is running (so for prime and cranking). When the engine is running (RPM above 401) then pump 2 speed will be varied according to injector duty cycle. In this example pump 2 would start at 20% speed when injector duty cycle exceeds 40%, then will ramp up to 100% speed for 80% injector duty cycle. keizsr 1 Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 2, 2022 Author Report Share Posted August 2, 2022 Mr. Adamu yes this is the setting i wanted Sorry for the inconvenience due to lack of explanation We are currently preparing for the vehicle.We will report again after completion. Thank you for your quick and polite explanation as always. Quote Link to comment Share on other sites More sharing options...
keizsr Posted August 4, 2022 Author Report Share Posted August 4, 2022 Mr. Adamu I was able to confirm the operation Thank you for your accurate response Quote Link to comment Share on other sites More sharing options...
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