4 - More Info

AN UNDERSTANDING

The challenge of controlling the mass air flow sensor for our air/fuel ratio adjustments without the use of add-on electronics reminded our engineers to go back to the basics. Those basics being the principles developed in the 18th century by Bernoulli. In its most basic form, Bernoulli’s Principle reminded our engineers that in order to keep our mass flow consistent (or to increase mass flow), there are dynamic changes that must occur within an intake tube in order to guarantee sufficient air is being supplied to the engine. These dynamic changes are governed by very specific laws of physics and we needed to harness those laws to extract every last bit of power safely and without causing check engine lights. For example, if you have a fluid flowing through a pipe of varying cross-sectional areas, the fluid will speed up in the constricted areas and the pressure the fluid exerts is least where the cross section is the smallest. This phenomenon is also called the Venturi effect. Looking further into the works of this 18th century physicist reminded Injen the importance of developing a streamlined air intake system that would provide the least amount of resistance within the intake.

BERNOULLI'S THEOREM

Example: P=pressure and V=velocity
From this law, it follows that where there is a velocity increase in a fluid flow, there must be a corresponding pressure decrease. Swiss physicist and mathematician Daniel Bernoulli formulated this theorem in 1738.