DIYEFI.org Forum

You're right, they're obvious. No such code will be included in my, root-source, upstream, master source for FreeEMS. This decision, like all others, was made by community consultation, and the result was that the vast majority of users, at the time, agreed that it was a poor choice to implement th...

Another way to do it, is to DMA rake a piece of memory across a GPIO pin. Such that you draw any series of pulses you want, across that pin, and you do it when you trigger the DMA to start raking. This allows you to draw any wave form you want. I don't understand the term 'rake' either. Do you mean...

No, it is absolutely not up to Marcos, at all. It's solely up to me, and I can tell you, that this will not ever be included in FreeEMS sources. This is a software decision, not a hardware one. It has been made for all the right reasons, a long time ago. A hardware solution is required to support t...

Yes, use it to drive a FET instead of a bipolar. Have you guys tried it?

If so, what happened? I think it can be made to work.

What's the matter here? Is all not well in Fredland?

:wink

Edit: Btw, I think I noticed a spelling error in one of the Russian-language threads. And one post had too many carriage returns.

+1 :wink

Good idea, assuming you know which it is. What if you are wasted spark with half sync, should you then be allowing fuel/air into the exhaust unburned for a cycle always before reallowing ignition? I'm unsure how to make it work, but it's definitely worth trying to! Thanks! Yes, that unsparked fuel ...

You get back the energy from drawing the vacuum against the throttle plate, because that vacuum helps lift the piston on the compression stroke. Pumping losses are from pumping. With a blocked intake there is very little air being pumped. If you consider a completely closed intake and exhaust, there...

...if you're delivering two injections per cycle, the implication is that you're delivering that to two oppositely timed cylinders. Thus if you start firing on one, then one cylinder gets a full breath of fuel, and the other gets half, and if you fire on the other it's reversed. Which raises the qu...

Either your Jetta is diesel, has two throttles, or you're wrong. Are there any other options? Diesel regulates torque via fuel supply with full air supply always. Two throttles can be used, one electronic one mech for traction and/or safety control of other kinds. A gasoline/petrol engine with a wi...

Great work fellas!