Home Performance Kits Crate Engines New Products How it Works Installers Distributors Contact Us History FAQ Links

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

What is Negative Pressure Supercharging about?

Negative Pressure Supercharging is about making mechanically simple carbureted or fuel injected street engines produce...

More torque and horsepower from idle to 4500 rpm using low octane fuel

Faster acceleration

More towing power

More fuel economy

Lower emissions

Lower maintenance

Lower running costs

...than today's mechanically complex high rpm wonder engines.

For more details see What is NPS? and Performance Improvements

Negative Pressure Supercharging is NOT about...
making street engines rev higher to produce more peak horsepower
using supercharger air pumps to produce more peak horsepower
making street engines more mechanically complex


Negative Pressure Supercharging is NOT about making street engines rev higher to produce more peak horsepower because the drawback with high rpm engines is they...

DO NOT produce the wide range of performance improvements produced by Negative Pressure Supercharging

Cost more than Negative Pressure Supercharging

Reduce driveability, towing power, fuel economy, idle quality and manifold vacuum

Produce poor low rpm torque which produces poor low speed acceleration

Increase emissions, maintenance and running costs

Must use high octane fuel or expensive high octane fuel additives

Must use many expensive and heavy duty parts to handle the higher horsepower

Must use race parts or mechanically complex systems to produce respectable low speed acceleration such as...
4-6 speed transmissions
4-5:1 diff ratios
4000-5000 rpm high stall converters
Long intake manifolds
Variable intake manifolds
Roller cams
Variable valve timing
Variable valve lift

Must use expensive pollution control systems to reduce the much higher emissions they produce such as...
Catalytic converters
Exhaust gas recirculation
Vacuum (smog) pumps
Secondary air injection
Computers
Fuel injection

Negative Pressure Supercharging is NOT about using supercharger air pumps to produce more peak horsepower because the drawback with air pumps for street applications is they...

DO NOT produce the wide range of performance improvements produced by Negative Pressure Supercharging

Cost 3 times more than Negative Pressure Supercharging

Reduce fuel economy

Increase emissions, maintenance and running costs

Require the engine to use high octane fuel or expensive high octane fuel additives

Require the engine to use many expensive and heavy duty parts to handle the higher horsepower

Require the engine to use expensive pollution control systems to reduce the much higher emissions they produce such as...
Catalytic converters
Exhaust gas recirculation
Vacuum (smog) pumps
Secondary air injection
Computers
Fuel injection

Negative Pressure Supercharging is NOT about making street engines more mechanically complex because the drawback with mechanically complex systems* is they...

DO NOT produce the wide range of performance improvements produced by Negative Pressure Supercharging

Cost 2 times more than Negative Pressure Supercharging

Produce only small improvements in power, fuel economy or emissions with each system which require making engines more and more mechanically complex in order to improve their efficiency

Require using more and more expensive computers to operate the increasing number and complexity of mechanically complex systems

Substantially increase the already high cost of mechanically complex engines to the point that only the rich will be able to afford to buy and repair them in the near future

* Multi-cams, multi-valves, multi-catalytic converters, variable valve timing, variable valve lift, variable intake manifold, variable exhaust manifold, variable twin turbo, variable compression ratio and cylinder deactivation.



Impulse Engine Technology P/L

PO Box 986 Randwick NSW 2031 Australia
Ph: (02) 9398 5544
Fax: (02) 9398 5644

International: Ph: +(612) 9398 5544
Fax: +(612) 9398 5644

Email Us


Inventor of Negative Pressure Supercharging

© Copyright 1996-2015 Impulse Engine Technology Pty Ltd. All Rights Reserved.  

Website Hosting & Maintenance : WebStart