Direct Fuel Injection for Gasoline Engines

Over the last twenty-five years the operating configuration of the gasoline engine has shifted from being carbureted, to being single-point or port-fuel-injected.

This shift was driven by the need for an increased level of air-fuel ratio control to meet vehicle system performance requirements, for better fuel economy and reduced emissions.

Could it be that the gasoline engine is on the threshold of yet another shift to direct-injection operation, spurred this time by the need for increased fuel economy and reduced carbon dioxide emissions?

Considerable research effort has been devoted to the development of combustion systems for direct-injection gasoline engines.

With the introduction of the first commercially successful stratified-charge, direct-injection, gasoline-engine-powered vehicle in 1996, research and development activity in this area has intensified.

Despite this considerable research and development effort, however, direct-injection gasoline combustion remains a technology that is still evolving.

Also, severe challenges remain in the area of exhaust aftertreatment to meet future emissions standards and cost reduction requirements. Sections include: Combustio System Design and Development of Direct-Injection Gasoline Engines Fuel Spray Characteristics for Direct-Injection Gasoline Engines Multi-Dimensional Modeling of Direct-Injection Gasoline Engine Phenomena Diagnostic Methods for Direct-Injection Gasoline Engines.