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What is NPS?
What is NPS about?
Performance Improvements
Power Range
Fuel Economy
Uses mechanically simple parts
Comparing Performance per dollar of Negative Supercharging Kits
Suitable engines and vehicles
Suitable fuel systems and fuels
More average torque and horsepower Produces Faster Acceleration
Engines produce Horsepower...NOT Kilowatts of electricity



Fuel Economy

Negative Pressure Supercharging improves fuel economy 30-50% by...

  • Widening the torque curve from 1000 - 4500 rpm
  • Doubling the torque from 1000 - 3500 rpm
  • Using less throttle to produce fast acceleration, cruise or tow a trailer
  • Increasing the pumping efficiency of the engine
  • Vapourising more of the liquid fuel into a gas
More torque the engine produces the less fuel it needs
Regardless of the method used to produce more torque, it's a scientific fact that the more torque the engine produces the LESS fuel it needs and the more peak horsepower the engine produces at high rpm the MORE fuel it uses. This is the reason low rpm torque engines produce much better fuel economy than high rpm horsepower engines.

This is a typical fuel curve graph that compares the fuel consumption to the engine's torque curve. Note how the 2 curves are almost mirror images of each other. The fuel curve graph shows that the more torque the engine produces the lower the fuel consumption is which is shown by the lower BSFC number. The graph also shows that the higher the rpm the higher the fuel consumption is which is shown by the higher BSFC number.

Impulse Engine Technology P/L

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Ph: (02) 9398 5544
Fax: (02) 9398 5644

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

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Inventor of Negative Pressure Supercharging

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