Vacuum or Boost is the
result of high pressure forcing itself into low pressure environment
High (positive) pressure naturally forces itself into a low (negative)
pressure environment in order to equalise pressure. Therefore, a pressure difference must
be initially created for air to move from a high pressure to a low pressure environment in
order to produce vacuum or boost.
To produce vacuum a lower (negative) pressure environment below atmospheric pressure must be initially produced inside the engine (ie: when a piston moves down the bore it reduces the pressure in the cylinder) while the higher atmospheric pressure outside the engine remains constant.
To produce boost a higher (positive) pressure environment above atmospheric pressure must be initially produced outside the engine (ie: when an air pump compresses the air it increases the atmospheric pressure) while the lower pressure inside the engine remains constant at a given rpm.
|Impulse Engine Technology
PO Box 986 Randwick NSW 2031 Australia
Ph: (02) 9398 5544
Fax: (02) 9398 5644
International: Ph: +(612) 9398 5544
Fax: +(612) 9398 5644
Inventor of Negative Pressure Supercharging