Hiromichi Miwa

An Analysis of Wall Flow and Behavior of Fuel in Induction Systems of Gasoline Engines

The transient performance of an engine generally depends on the volume of wall flow and behavior of fuel in the induction system which is composed of the intake manifold and the intake port. An experimental technique has been developed for estimating these phenomena in a gasoline engine, which employs a meter for measuring the air-fuel mixture ratio. Using this technique the authors analyzed single point and multipoint injection systems, and determined the differences in the volume of fuel associated with wall flow. The effects of the shape and specifications of fuel supply system components on the volume of wall flow and fuel behavior in these systems were established.