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laser for sparkplug discussion

Old Apr 13, 2010 | 11:25 AM
  #26  
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From: macon, georgia
great stuff guys
I do hear that the fiber optics are not working out well as they are sensitive to engine comparment conditions.
There is a picture of the laser with its "spark" suspended in mid air versus the conventional sparkplugs spark. Boggles the mind. I will try to copy and paste later today if time permits.
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Old Apr 13, 2010 | 04:24 PM
  #27  
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From: Colfontaine, Belgium
Originally Posted by ZeroHP

The waste heat of the laser, like any other heat generating energy converting system, is dependent upon total power flux, and total energy conversion efficiency. You're not too likely to see any new major revolutions in laser efficiency soon; and if we do, the aerospace guys will keep it for themselves for some years. Lowering the waste heat is only (realistically) possible by reducing the power flux (reducing the power output of the laser).
Not sure if this is news to anyone who even understands it anyway, but its been a few years ago now that they have been playing with diodes of 70-75+% PCE. Not that those apply to current usable tech, but hey... AFAIK currently the industry is around the 50% power conversion efficiency range
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Old Apr 13, 2010 | 04:56 PM
  #28  
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From: Montucky...err, Montana
We need lasers in our engines just because. I don't really care what they do.

"I have freaking lasers in my engine. What? What?"

Until nuclear powered cars hit the roads, laser-ignited rotaries will be the status quo for technology. :p
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Old Apr 13, 2010 | 10:32 PM
  #29  
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From: 2017 Miata RF Launch Edition
Originally Posted by Nubo
9000/60 = 150Hz, on a per-chamber basis. 300Hz if you want the same source to energize both chambers. This is assuming the need for "trailing" ignition is eliminated.
9k rpm is the e-shaft speed. The rotors spin at 1/3 that, right?
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Old Apr 14, 2010 | 01:16 AM
  #30  
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From: WA
Originally Posted by NotAPreppie
9k rpm is the e-shaft speed. The rotors spin at 1/3 that, right?
One combustion event per revolution of the e-shaft (for one rotor chamber).
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