Changes by last author:
Changed:
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Gearbox control
In modern trucks the manual gearbox is operated electronicly so its a manual gearbox shifting automaticly. |
| Some information about the 4L80E and 4L60E taken from memory: -Jörgen |
| It is theoretically (!) possible to have GenBoard control the gearbox. |
| Both transmissions use: |
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benefits are:
* no powerloss cause there's no power converter. * fast and comfortable changing of gears. * because shifting is optimal and always the same way the gearbox is operated wear, tear and driver abuse can be roled out or being brought to a minimum. |
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*3 pressure switches to determine in which position the shift lever is. (add array)
*2 shift solenoids. (add array, resistance and pwm if applicable) |
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Disadvantage:
* no driver interfearance in shifting (well, buttons can be provided) |
| *1 pressure control solenoid, this is used to soften the shifts at low power. 0% PWM = full pressure = minimal slipping. Find resistance of solenoid and suitable PWM frequency. |
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Inputs: revs, MAP(load), TPS
outputs:clutch Servo motor controller,forward backward gearbox lever servo motor and for left right lever control. |
| *1 Converter lockup solenoid, current limited with PWM. Find resistance and frequency. |
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Concerns:
* number of outputs and current capabilities (Econoseal-PCB likes max 10A at 85C) * complex software (!!) |
| Find pinouts for the most common variants of the transmissions. |