1986-03-01

Variable Induction Systems to Improve Volumetric Efficiency at Low and/or Medium Engine Speeds 860100

A new method of estimating volumetric efficiency has been developed to facilitate parameter studies necessary for designing a Variable Induction System (VIS). The proposed method is based on the application of frequency domain to solve linearized one-dimensional hydrodynamic equations. This method enabled CPU time to be reduced to 1/200 of that required for non-linear calculation in the time domain.
Various VISs having sufficient flexibility to ensure practical uses are introduced. Finally, VISs are classified into four groups depending on the pulsation mode. Two examples of VISs are described and tested. Both are found capable of considerably increasing volumetric efficiency at low and medium engine speeds without loss of maximum power.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X