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[4Tesla]

I have a question you guys might know the answer.. with HHO - glow plug, spark plug, or both?

[evolvingape]

I have talked a little bit about glow plugs and spark plugs here:

http://www.overunity.com/index.php?topic=10157.0

The important difference is that glow plugs combust by heating the chamber to above the auto ignition temperature of the fuel.

http://en.wikipedia.org/wiki/Autoignition_temperature

http://www.hydrogen-motors.com/hydrogen.html

http://www.safehho.com/hhotechnology.html

As you can see the stated auto ignition temperature of hydrogen varies depending on who you ask, so normally I advise if you do not want auto ignition then keep the temperature below 500C.

Glow plugs are not designed for HHO but other fuels and so may not even reach 500C and so you would also need to test for this. The other important point is that once the engine chamber is up to operating temperature the glow plug is normally turned off and the engine continues to run with automatic timing.

So you need to work out if your intended engine can run with automatic timing. If it cannot then use a standard spark plug and set the timing. The other option is to use a buzz coil and spark plug for simple off the shelf custom timing, see first link for info.

Hope that helps

RM

[vonwolf]

  Glow Plugs are mainly used in Diesel engines when there cold to help start and raise the temperature of the combustion chamber to help ignition till it warms up to normal operating temperature.
  I'm not sure if HHO lowers the ignition temperature in a diesel but I would think a glow plug might cause pr-ignition problems.
  Pete

[evolvingape]

Yes Pete is right about the glow plugs on cars being used in diesel engines to raise the chamber temperature when cold starting. When you turn the ignition on you should see a light in the dashboard in the shape of a coil. When the light goes out you can start the engine as it is up to temperature.

The glow plugs I was referring too are the ones used for model engines that are battery powered, not sure what temperature they operate at though.

RM

[evolvingape]

Hi TheOne,

I have put up the Everyman HHO Cell design for you, hope that is the kind of thing you are looking for, any problems understanding what to do let me know

http://www.overunity.com/index.php?topic=10694.new#new

RM