Odd electrical phenomenon

[twiggy2cents]

It's all in how you define a problem. As an engineer I would not consider a design that allows the engine to fire inadvertantly something that I would sign off on. So as I said, I would consider it to be a design flaw.

Incidentally, it's something that would be easilly correctable while in the design stage. If they knew about it, which they may not.

Maybe they did it to help if the engine prevent hydrolock from a flooded engine... Engineers like to think they know every thing but if they listened to the people that have to work on what they make they would be amazed

[focus frenzy]

dyna-s here and mine discharges when the key is turned off, not a problem unless you turn on the key and then turn it back off and it happens to have a exhaust valve open. KAAAPOWWW!!

it has scared the poo out of me a few times.

[uudfourty]

That settles it then.
The riddle of spontaneous GS combustion has been solved.

[reddirtrider]

Maybe they did it to help if the engine prevent hydrolock from a flooded engine... Engineers like to think they know every thing but if they listened to the people that have to work on what they make they would be amazed

Are you in marketing?

[reddirtrider]

dyna-s here and mine discharges when the key is turned off, not a problem unless you turn on the key and then turn it back off and it happens to have a exhaust valve open. KAAAPOWWW!!

it has scared the poo out of me a few times.

Which is precisely why there could be unintended consequences and it's a design flaw.

What if you were replacing the exhaust and it was still off with a small child around. For some odd reason you decide to turn on the lights to check the electrical system and this thing fires inadvertantly. If the child were standing near the exhaust ports, it's possible some crap could hit them in the face and eyes.

I know that's a long, long shot, but stranger things have happened.

I'll stick with design flaw. Not that you can't use it, or shouldn't, but it shouldn't power up in that fashion.

[Nessism]

I agree with red, sounds like a design flaw.

[twiggy2cents]

I am a ford technician and some of these things the engineers come up with. If they live their life the way they design you would think they would be peeing on their legs saying it was the proper draining path and such... Most of the time i have talked to an engineer they ask me what my thoughts are on it when i was calling them for theirs.

[Nessism]

I am a ford technician and some of these things the engineers come up with. If they live their life the way they design you would think they would be peeing on their legs saying it was the proper draining path and such... Most of the time i have talked to an engineer they ask me what my thoughts are on it when i was calling them for theirs.

There are good engineers, and there are bad ones. And even good people make mistakes now and again. Design flaws tend to be visible since they occur on every part produced; like living in a glass house as they say.

Asking an experienced technician what they are seeing in the real world is the sign of a good engineer - communication is a tool that should be used. It would be far worse for the engineer to sit behind his cad screen and block out everything else.

[reddirtrider]

I am a ford technician and some of these things the engineers come up with. If they live their life the way they design you would think they would be peeing on their legs saying it was the proper draining path and such... Most of the time i have talked to an engineer they ask me what my thoughts are on it when i was calling them for theirs.

My question about being in marketing was a joke. Those guys (in my company anyway) like to spin data. I thought it was a good spin that you turned this into something to prevent hydrolock. We can debate if it would or not (I doubt it), but it was good spin nevertheless.

[reddirtrider]

There are good engineers, and there are bad ones. And even good people make mistakes now and again. Design flaws tend to be visible since they occur on every part produced; like living in a glass house as they say.

Asking an experienced technician what they are seeing in the real world is the sign of a good engineer - communication is a tool that should be used. It would be far worse for the engineer to sit behind his cad screen and block out everything else.

True on all counts.

[twiggy2cents]

yeah i guess your right but the engineers i am talking about are hotline engineers that are supposed to help you when you have no clue whats going on with the concern. But either way we need them since i wouldnt want to be the one designing the car

[reddirtrider]

yeah i guess your right but the engineers i am talking about are hotline engineers that are supposed to help you when you have no clue whats going on with the concern. But either way we need them since i wouldnt want to be the one designing the car

Automobiles have become quite complex. There are over 50 uProcessors, 100 sensors, and 30 electrical subsystems in a mid-sized car.

Very advanced tools are now a requirement to allow engineers to integrate these systems. You not only need to look at nominal operating conditions, but worst case, stress, and fault conditions. During power up scenarios electronic systems can exhibit strange behavior (as evidenced by this example). Lock out circuitry should be used to keep the outputs from being enabled before the internal electronics have a chance to reset.

When these devices were designed they likely did it without the aid of circuit design tools and never anticipated this scenatio. I'm not passing judgement, just stating what is most probable (IMHO that is).

[tkent02]

Or maybe they did it on purpose thinking it was funny to zap everyone once they had our money.

[Nessism]

yeah i guess your right but the engineers i am talking about are hotline engineers that are supposed to help you when you have no clue whats going on with the concern. But either way we need them since i wouldnt want to be the one designing the car

What car company are we talking about?

[uudfourty]

Or maybe they did it on purpose thinking it was funny to zap everyone once they had our money.

That's the assumption I'm operating under.
High performance... even when you don't want it.