glow plugs failure temperatures

[Jack ODonnell]

Your good Tyler

 

[dwilfong]

Hay is this like the price is right?

If you go over you lose?

If so I will give a more exact answer.

I really would like a card of Rossi #6 as I could never afford to buy them to test with. LOL

 

[dave roach]

And the answer is.Dick you said in you post that you did 23 glow plugs all heat ranges and what is the answer for all 23.

Dave

 

[shoboat]

Dick,

I know Simon says "Rossi # 9 ?

How is that for an answer Dick?

Just Having Fun With You,

Mark Sholund

 

[Andy Brown]

I guess around 2900F. I would hazard a guess most glow plug failures are not temperature related, but temperate plus mechanical stress of combustion. So it heats up to a plastic state and breaks.

TG

Tyler's respones is the most logical line of thought.

Off the top of my head from memory, Platinum's melting point is about 3200* F. Iridium is alloyed with the Platinum in small amounts to increase the melting temp of the wire as Iridium melts at somewhere north of 4400*F. However, Iridium is not as shock ristantant as Platinum, so while adding more Iridium will raise the melting temp of the wire, the increased brittleness of the wire could offset the possibilty for longer life due to vibration and shock. The wire that melts at the highest temperature in a static test situation may break at very low temps due to vibration and shock in a running engine.

 

[brad nichols]

I would say around 3500 F, but compression ratio and how well the engine scavens and vibrates also come into play.

Brad

 

[Jack ODonnell]

Still waiting Moby

 

[mark ham]

and at what temp does aluminum begin to melt???????

 

[Greg Wannamaker]

Aluminum - 1400, know that from building and melting snowmobile engines, although that is the temp at the flame tip and on the pyro, might be hotter in the chamber.

 

[dave roach]

And the answer Moby.

Dave

 

[anthony_marquart]

Are you going to share with us Mr Jones?

 

[Elias Vazquez]

It will probably turn out to be a joke coming from Mr. Jones

 

[anthony_marquart]

probably..

 

[Jack ODonnell]

Still waiting for your report Mr.Jones.

 

[Grimracer]

I LOVE THIS.. man.. its like WHATS UNDER THE TREE...lol

Dick.. this is the best post in a LONG TIME!

Grim

 

[richard jones]

I finished the 3rd phase in my glow plug study late 2013, I measured at what

temperature the glow plug wire will fail, I had 83 glow plugs I was going to

test, however a large number of these were not representative of what the

majority of boaters run and the cost would have been a little pricey, so I wound

up only testing 23 different glow plugs.

So, your mission, if U accept, is to guess the hottest temperature, of all the

plugs tested, that only 1 glow plug reached before it failed.

He who guesses the closes, wins a free bag of blown plugs.

good luck.

mobydickk

I would not get to excited about a particular plug failure temperature as I have not found any glow plug that I have not been able to break the element. this phase was about putting some data together to transfer to my graph to include into my glow plug article.BTW, hottest plug wire temp before it blew was???????????????

1821 Deg.

moby

 

[Jack ODonnell]