Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

laser for sparkplug discussion

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 04-13-2010, 11:25 AM
  #26  
Registered
Thread Starter
iTrader: (3)
 
olddragger's Avatar
 
Join Date: Apr 2004
Location: macon, georgia
Posts: 10,828
Likes: 0
Received 38 Likes on 27 Posts
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.
Old 04-13-2010, 04:24 PM
  #27  
Asshole for hire
iTrader: (1)
 
paulmasoner's Avatar
 
Join Date: Jun 2006
Location: Colfontaine, Belgium
Posts: 3,214
Likes: 0
Received 3 Likes on 3 Posts
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
Old 04-13-2010, 04:56 PM
  #28  
Academic Rotarian
 
ZeroHP's Avatar
 
Join Date: Apr 2010
Location: Montucky...err, Montana
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
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
Old 04-13-2010, 10:32 PM
  #29  
What am I doing here?
 
NotAPreppie's Avatar
 
Join Date: Mar 2006
Location: 2017 Miata RF Launch Edition
Posts: 3,606
Received 649 Likes on 510 Posts
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?
Old 04-14-2010, 01:16 AM
  #30  
Registered
iTrader: (2)
 
Gripen's Avatar
 
Join Date: Dec 2008
Location: WA
Posts: 107
Likes: 0
Received 0 Likes on 0 Posts
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).
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Brettus
Series I Engine Tuning Forum
46
04-19-2024 06:28 AM
jasonrxeight
RX-8 Parts For Sale/Wanted
8
10-03-2015 09:51 AM
Forevermore
Series I Trouble Shooting
6
09-20-2015 01:04 PM
carid
Vendor Classifieds
0
09-10-2015 09:26 AM
iwannarun
New Member Forum
1
09-06-2015 01:37 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: laser for sparkplug discussion



All times are GMT -5. The time now is 09:31 PM.