rusefi.com

I have seen this, but it is not self explanatory! you set the open or the close time? I was looking something more like: Duration, Overlap, Lift That table sets the angle at which your injections end. Or, as blundar called it above, EOI = End Of Injection angle. The values in that table are degrees...

Injection phase in the fuel menu:

etnrlz wrote: ↑

Thu Apr 14, 2022 12:21 am

Do you guys have the tune(msq) done for it?

Nope. That part is up to you until we have a few good baselines.

Can you post a regular tunerstudio log to rusefi.com/online? Be sure to set the logging rate to maximum.

I see "sequential" on https://rusefi.com/online/view.php?msq=946&dialog=injectorConfig and CAM input is selected by greyed out on https://rusefi.com/online/view.php?msq=946&dialog=triggerConfiguration It's greyed out since cam wheel shape is not selected on https://rusefi.com/onli...

That's for reverse protection without the drop of a diode. The body diode on Q1 "kick starts" the circuit that pulls its gate low, turning it on fully.

edit: the D4 TVS is for overvoltage protection

Bosch trims the sensor element itself on the LSU ADV. It works the same way, except there's no extra external (in the connector) resistor paralleled with the sense resistor inside the controller. OK .. precise laser cutter can do this job .... ..and the we can have same sensors ... no, that's only ...

Yes, it the same as LSU 4.2 / 4.9 has ... .. but I have no idea, "how labmda controller" measure sensors parameters without Rcal .. Bosch trims the sensor element itself on the LSU ADV. It works the same way, except there's no extra external (in the connector) resistor paralleled with the...

LSU adv five wire pinout

one thing i also did was to improve the transition from standard idle tables to the main tables. So if you are using idle VE and Idle ignition timing, you want to make sure the main table has those things correctly aligned as well. That way you dont get into any odd transitions. You actually want a...

"getting a base tune" Well, to my knowledge, nobody has run a VR6 and certainly not in a civic. You're going to have to do the leg work yourself to get the thing running. Start going thru menus in TunerStudio. Fill out anything you know how to fill out. One field at a time. Anything else, ...

I'm not entirely sure what they did, but there's a lot of "marketing speak" there confusing the difference between resolution, precision, and accuracy.

LSU ADV is not better, other than warm up time. It doesn't require any hardware changes, afaik, just changing the software table to use the different pump current vs. lambda relationship.

@Dron_Gus will be interested to see this somewhat unconventional use of his gpiochips api : https://github.com/rusefi/rusefi/pull/4029

AndreyB wrote: ↑

Thu Mar 31, 2022 12:41 am

why? maybe proper route is to fix this defect in the code?

btw we made the explicit choice to not support multiple devices per bus to avoid any priority inversion due to locking of the shared resource

Dron_Gus wrote: ↑

Wed Mar 30, 2022 10:16 am

OpAmp stability due to capacitive load?

exactly

JRD McLAREN wrote: ↑

Wed Mar 30, 2022 7:16 am

I have 20220126 .. and it have EGT option ..

EDITED: but I can't test it at this moment ...

Correct, you do have it on 2022 01 26. It was broken after that.

That linked pull request will merge some time tomorrow morning (8-12 hours from now), then it will be in the latest snapshot firmware.

..it is thereee..... and IT WORKS ... What version of MRE firmware are you using for EGT to work? I connected MAX31855 to SPI3(PC10, PC11, PC12) and СS(PA 15) and EGT doesn't work. I am using stm32f405 discovery. If you write the firmware from Frankenso, then the EGT works. We disabled it on MRE 🙃 ...

In the sim we can also play with what it looks like with insane value capacitors too.

Here's 1000uF (practically infinite):
And here's 1nF (practically zero):
1uF is a happy medium to suppress those spikes (= EMI), but not enough to hurt "DC" accuracy.

Btw, the SPICE models are checked in to github: https://github.com/mck1117/wideband/tree/master/simulation

Are use sure that R9 make sense when calculating Ri? As it is measured using quite high freq AC and there is C4... Yes, subtracting that part out is the right thing. Rise time of a 10 ohm / 1uF filter is on the order of 25 microseconds, but the AC is at ~3khz, which is a period if 330 microseconds....

No, I don't mind MAFs, they're ok!

That scheme should work fine. If/when we build proper "full" multi-bank fueling (multiple MAFs, each control some cylinders), then it'll be trivial to enable that and remove the balance tube.

Mat, you are the best! I am waiting impatiently for it. Why not the "right" etb synchronization with two MAFs or MAPs? I think the effort would be similar, isn't? It's worth (read: probably necessary) to have either some localized (operating point) memory about how much split is required,...

We take the signal from the sensor and pass it through and FFT to determine the noise at the chosen frequency Haha, it's not even an FFT. It's a bandpass filter (adjustable Q, F_c), then something approximating an envelope detector or integrator. We just measure the total amount of power that makes...

In case there was doubt about whether the relatively naïve implementation works, here's some data from a race:
Can you spot the knock?

Looks great! Idea. On the bank that is rich, change the TB closed position to tell the ECU 0% TPS is actually just a little open on the TB so it will never close quite as far. You can balance the idle mixtures this way and the error should go away as the TB opens so I think between this adjustment ...

Those resistors in your snip don't need to be 0.1%, by the way. Dave specified them when he didn't know better, and we've since decided that 1% is plenty good, and likely even 5% parts would work. The F0 module I originally designed uses only 'jellybean' 1% resistors. And if you don't believe me, s...

By the way, this is very very similar to how the CJ125 works internally. It uses some sample+hold stages (AND ANOTHER DIFFERENTIAL AMPLIFIER) synchronized to the AC injection instead of an ADC, but it works fundamentally the same as this circuit.

AFAIR lean AFR will output voltage close to zero. So this can possibly affect sensor warm up with stopped engine when atmosphere air is in exhaust pipes. Correct - high voltage means lean. We transition from open loop (heater ramp) to closed loop (PI heater, PI pump control) at 500 ohms ESR. Worst ...