Negative Supercharging


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INTRODUCTION



Negative Supercharging is a highly advanced and complex Thermo Fluid Dynamic Process that converts the positive exhaust pressure produced after combustion into "Negative Boost" within the cylinders to pull more air into the engine. Negative Supercharging does NOT use any type of blower device and works the opposite to conventional supercharging by pulling air into the engine instead of pushing air like conventional superchargers and turbochargers. The best way to understand Negative Supercharging is to imagine you are reading about how engines work for the first time.
The working principle of negative supercharger is that the negative (low) pressure is naturally produced behind all moving objects which travel at a high speed. Negative Supercharging uses this negative pressure to supercharge the engine.


HISTORY OF NEGATIVE SUPERCHARGING



1983-1988:-
The Negative Supercharging concepts was first conceived in 1983 and the theory was explored over 5 years before it was ready to be applied to a working engine in 1988. The inspiration for the Negative Supercharging concept came from the 225 Chrysler Slant 6 engine. We were impressed by how a small engine like the Slant 6 can produce such a high level of torque and the fast acceleration of a V8 using conventional headers as the only upgrade in performance.


1988-1993:-
Development of the Negative Supercharging concept began in October 1988 when we applied the specs of the Slant 6 and this new supercharging concept to a 360 Chrysler small block which resembled a larger version of the Slant 6. Over the next 5 years the development involved extensive trial and error testing of hundreds of different combinations, increasing the speed of the exhaust gas from 300 to 450 ft/sec, advancing the valve timing events, using radical ignition advance curves and a compact Tri-Y exhaust header which used very small diameter header pipes with a unique megaphone shaped collector. By mid 1993 a portion of the Negative Supercharging concept began to work for the first time and it was no longer a concept. During 1993 we also established Patents worldwide as the inventor of the Negative Supercharging technology.

1993-1995:-
The huge increase in torque produced by the Negative Supercharging process encouraged us to apply higher gas speeds by using even smaller diameter header pipes. As a result, the gas velocity was twice the speed used by conventional engines which changed the air and gas flow (fluid dynamics) and prevented this supercharging process from working. After 2 years of trial and error testing, we found that when the speed of the exhaust gas was increased from 450 to 600 ft/sec, less exhaust valve lift and overlap duration was required and 4 key areas of the engine which control the air and gas flow (fluid dynamics) need to be synchronized together for the Negative Supercharging process to work. This was an exciting breakthrough.

1995-1997:-
We continued to test many other different combinations and to refine the Negative Supercharging process with this new information. We found a total of 8 key areas of the camshaft, cylinder head and exhaust header need to be synchronized together for this new supercharging process to work at optimum and increase the supercharging effect. On 10 December 1997 the Negative Supercharging process officially became a working reality.