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What is NPS?
What is NPS about?
How NPS works compared to standard and race engines
Operating Principles of NPS
Basic description of parts and processes that work together to produce NPS
Combination of parts and processes that work together to produce NPS
HTCSI combustion compared to HCCI combustion
Working prototype engines
Negative pressure produces the SAME force as positive pressure
Vacuum or boost is the result of high pressure forcing itself into low pressure environment
How internal combustion engines and superchargers actually work

How Internal Combustion Engines and Superchargers Actually Work

All naturally aspirated engines are negative or low pressure air pumps
As the piston moves down the bore it reduces the pressure in the cylinder which causes the higher atmospheric pressure outside the engine to force air into the lower pressure environment in the engine. Since naturally aspirated engines are not able to increase atmospheric pressure outside the engine like superchargers, they use high rpm to further reduce the pressure inside the engine which forces a larger volume of air into the engine. However, during low rpm the engine is not able to reduce the pressure inside the engine as much as during high rpm which forces less air into the engine and produces less power. This is the reason naturally aspirated engines produce less power the lower the rpm and more power the higher the rpm.

All conventional superchargers and turbochargers are positive or high pressure air pumps
These devices are auxiliary air pumps which increase atmospheric pressure outside the engine in order to force a greater volume of air into the lower pressure environment in the engine. By increasing the speed of the auxiliary air pump without increasing engine rpm, the air pump further increases the atmospheric pressure outside the engine which forces even more air into the same low pressure environment in the engine. This is the reason auxiliary air pumps are able to force a greater volume of air into the engine from idle and produce substantially more power than naturally aspirated engines.

 

 

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Inventor of Negative Pressure Supercharging

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