Mark Steitle wrote:

Quoting Paul Yaw's web article on Combustion and Ignition -Part One (http://personal.riverusers.com/~yawpower/techindx.html) he states, "In the real world we do not have this option because the fuel does not burn fast enough to complete the combustion process within such a narrow range. ...you will realize that the power output of the engine can be increased by increasing flame speed.  Increasing the flame speed will release the energy from the fuel in a shorter period of time.  This will allow more effective use of this energy by timing the combustion process to more closely match the torque transfer curve of the rotor/eccentric shaft combination."  If it really is beneficial to increase the flame speed, then wouldn't firing both plugs at the same time help to accomplish this, resulting in more power at the flywheel?  (Paul Yaw advocates the MSD multiple-spark discharge ignition).  It also seems that by delaying the firing of the trailing plug, you will reduce the burn rate!

 thereby

hurting power.  I guess the bottom line is will it hurt to fire both leading and trailing plugs together?  Would there be some benefit, possible better bsfc?  Could ther be some "free" horsepower here?
MS

 
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