Screamin' Eagle Spark Plugs
Thank for your interest... I will be at SEMA this month. The CO. Producing the the plug has been a member of SEMA for over 10 years. That does not happen with a B.S. (Snake Oil) product. Thanks again.
I'll wait.
SEMA membership or showing a product at a SEMA trade show does in no way verify the awesomeness of the product. SEMA is a marketing exercise, not a testing exercise or a test/verification of claim.
Mike
Last edited by mkguitar; Oct 14, 2012 at 01:24 AM.
Pulsed power
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Pulsed power is the science and technology of accumulating energy over a relatively long period of time and releasing it very quickly, thus increasing the instantaneous power.
Overview
Steady accumulation of energy followed by its rapid release can result in the delivery of a larger amount of instantaneous power over a shorter period of time (although the total energy is the same). Energy is typically stored within electrostatic fields (capacitors), magnetic fields (inductor), as mechanical energy (using large flywheels connected to special purpose high current alternators), or as chemical energy (high-current lead-acid batteries, or explosives). By releasing the stored energy over a very short interval (a process that is called energy compression), a huge amount of peak power can be delivered to a load. For example, if one joule of energy is stored within a capacitor and then evenly released to a load over one second, the peak power delivered to the load would only be 1 watt. However, if all of the stored energy were released within one microsecond, the peak power would be one megawatt, a million times greater. Examples where pulsed power technology is commonly used include radar, particle accelerators, ultrastrong magnetic fields, fusion research, electromagnetic pulses, and high power pulsed lasers.
History
Pulsed Power was first developed during World War II for use in Radar. Radar requires short high power pulses. After the war development continued in other applications leading to the super pulsed power machines at Sandia National Laboratories.
“The spark plugs in your motorcycle & car are just as feeble as the ones in your lawnmower. Each provide a measly 50-watt spark.
For over 100 years, conventional wisdom assumed 50 watts was sufficient to efficiently ignite fuel. But, the PulstarŽ Pulse Plug is proving conventional wisdom wrong.”
PulstarŽ is the first capacitor-enhanced spark plug. The drop-in replacement for spark plugs uses the capacitor to store, then discharge the ignition’s electrical power in a powerful pulse.
The Pulse Plug
The high power of the PulstarŽ Pulse Plug will not damage an engine because the high power event lasts only for 2 microseconds (billionths of a second). This very brief moment is enough to ignite the fuel in the cylinder, but too brief to overheat the combustion chamber or metal engine components. So it will neither harm your engine nor void your manufacturer’s warranty.
PulstarŽ pulse plugs look like spark plugs because they were designed to fit into the same hole in your engine. But, internally, PulstarŽ is very different, incorporating a pulse circuit no other plug has. This is why we call PulstarŽ a “pulse plug” and not a “spark plug”.
How Pulse Plugs Work
Pulse plugs incorporate a pulse circuit, which stores incoming electrical energy from the ignition system and releases the stored energy in a powerful pulse of power. Instead of 50 watts of peak power typical of all spark plugs, pulse plugs deliver up to 1 million watts of peak power.
Spark plugs waste energy by heating ignition components before the spark occurs. Pulse plugs capture wasted energy with a pulse circuit and then release the captured energy into and beyond the spark gap. When the ignition power overcomes the resistance in the spark gap, the pulse circuit discharges all of its accumulated power – 1 million watts – in 2 billionths of a second!
What Makes It A Pulse Plug?The Pulse Circuit: This is what separates a pulse plug from a normal plug. Here, the energy is stored to be released into the gap once breakdown voltage is achieved by the ignition system. A typical plug has only the resistor, then a conductor which continues to the center electrode.
How Is A Spark Generated?
When the ignition event in an engine occurs, what happens in the ignition system depends on the type of ignition system present.
Inductive ignition system:
In an inductive ignition system the primary side of the coil is always energized at 12v until it’s disconnected. When the primary is disconnected, the magnetic field on the primary collapses and induces a 30,000v charge on the secondary coil producing the spark between the gap of the plug.
Capacitive Discharge Ignition:
In a CDI(Capacitive Discharge Ignition) system the signal is sent to the CDI circuit which sends a short, high-voltage pulse to the CDI ignition coil. The CDI ignition coil is basically a transformer taking the 250v input voltage and steping it up to around 40,000v very rapidly.
In either case, a high voltage charge is produced creating the spark to ignite the fuel.
The breakdown voltage required to cross the gap in the engine depends on a multitude of factors such as air temperature, air pressure and fuel saturation. Assuming normal atmosphere the breakdown voltage required for a typical .044″ plug gap and compression pressure of 160psi is around 25kv. That is equivalent to a typical engine usually at full throttle. Additionally, when the engine is at part throttle the voltage demand decreases significantly.
When the plug gap reaches its breakdown voltage requirements a plasma stream is formed from the center electrode to the ground strap on the plug. This plasma stream has zero resistance and drains the available power from the pulse circuit in about 2 microseconds. After this the normal resident stage of the spark continues until the coils have discharged and the process starts again.
The breakdown of the gap in a plug will cause electromagnetic and radio frequency interference.
An example of this is found in old “spark-gap” Morse code transmitters which relied on this interference for transmission. In present day, interference from those resistors would cause havoc with modern electronic ignition and fuel injection computers. Radio frequency interference would also be present and very noticable when trying to listen to a station.
Standard Spark Plugs have resistors inside the neck to help reduce interference with the additional resistance provided by the plug wires connecting the engine to the plugs.
PulstarŽ Pulse Plugs also provide insulation from interference. However, the insulation is located before the pulse circuit providing the stored energy an open pathway to freely discharge across the gap.
What does this mean in the engine?
PulstarŽ Pulse plugs take advantage of the charge / discharge cycle by storing energy on the voltage rise into its capacitor and releasing it very quickly when the breakdown of the gap happens. Instead of a typical spark of 25kv / .05amps, the pulse plug can, for around 2 microseconds, put 50 amps across the gap. Timing is unaffected since the gaps are usually set equal to or less than your normal spark plug settings keeping the spark voltage and length the same.
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For 100 years, ignition technology has been dominated by spark plugs . Pulse plugs are a radical departure from spark plugs. Their physical dimensions are the same as spark plugs because they have to interface with the engine and ignition system just like spark plugs. But this is where the similarity ends.
Pulse plugs incorporate a pulse circuit, which stores incoming electrical energy from the ignition system and releases the stored energy in a powerful pulse of power. Instead of 50 watts of peak power typical of all spark plugs, pulse plugs deliver up to 1 million watts of peak power. So where does the pulse plug get its incredible power?
When the ignition signal is sent to a traditional spark plug, it begins to ionize the spark gap. This means the voltage builds in the gap until a spark can be formed. During this ionization phase, which lasts about 5 millionths of a second, the incoming voltage (which has nowhere to go) heats up ignition components including the spark plug. This is wasted energy. When the ignition voltage overcomes the
resistance in the spark gap, the spark is created with an initial discharge of approximately 50 watts. Once created, the spark resides between the electrodes at very low power for over a period of 30 millionths of a second.
Whats different about a PulstarŽ Pulse Plug is instead of heating ignition parts during the ionization phase, this energy is stored in the integral circuit inside the pulse plug. When the ignition power overcomes the resistance in the spark gap, the pulse circuit discharges all of its accumulated power 1 million watts in 2 billionths of a second!
A simple way to think about pulse plugs is they are similar to a camera flash, whereas spark plugs are more like a flashlight. A camera flash is exponentially brighter than a flashlight even though they both may use the same battery.
Tests at an independent laboratory demonstrate how Pulstar pulse plugs burn fuel more efficiently than spark plugs. In this high-speed video (shot at 68,000 frames per second), you can actually see the ignition plume of Pulstar growing at more than twice the speed of the spark plug. Pulstar generates a much larger spark than spark plugs, which reduces overall burn time and burns the fuel more completely. Once created, the spark dissipates over a period of 30 millionths of a second.
With increased cylinder pressure, the pistons are pushed down with more force, which, in turn, generates more torque in the crankshaft, more liveliness to the throttle and more power to the wheels.
Of course, if you dont use this torque to go faster, the engine does its work with less effort resulting in better fuel economy.
Another way PulstarŽ improves efficiency is by reducing cycle-to-cycle variation. Cycle-to-cycle variation occurs in every engine to some degree and is caused by the dynamics of combustion, load, fuel quality, mixture of air to fuel and many other combustion variables. These variables can cause the spark plug to generate a weak spark and in the worst case, a misfire. This variability in ignition timing robs all spark ignited, internal combustion engines of up to 10% of their efficiency.
The powerful spark of PulstarŽ ignites fuel more precisely, which can reduce cycle-to-cycle variation by up to 50%. This is an important contribution to improving fuel economy
Tests at an independent laboratory demonstrate how Pulstar pulse plugs burn fuel more efficiently than spark plugs. In this high-speed video (shot at 68,000 frames per second), you can actually see the ignition plume of Pulstar growing at more than twice the speed of the spark plug. Pulstar generates a much larger spark than spark plugs, which reduces overall burn time and burns the fuel more completely. Once created, the spark dissipates over a period of 30 millionths of a second.



