Gasoline Fuel Systems for Clean and Efficient Powertrains

Authors

Walter F. Piock, Sergio Quelhas, George M. Ramsay, James Zizelman, Michael J. Frick, Delphi Powertrain Systems

Year

2006

Summary

The increasing demand for mobility, especially in the emerging regions, will continue to be satisfied by internal combustion engines. Although the Diesel engine attained a very strong position in some regional markets, the dominant propulsion source globally is and will remain the gasoline engine. The flexibility of the fuel introduction for creating the air/fuel mixture enables a large variety of different gasoline engine technologies. By far the most important is multi point fuel injection (MPFI) due to the simple injector and system and the corresponding low costs. Continuing further development to meet increasing demands for cost, emission and noise garantees its importance in the future. Homogeneous direct injection systems with conventional three way exhaust aftertreatment are applicable for almost all global markets and will be introduced on more naturally aspirated (NA) and turbo-charged intercooled (TCI) engines in the coming years. The need for better fuel efficiency will drive the introduction of systems with stratified operation in the next decade. For stratified systems the cost in relation to the final customer benefit needs to be significantly improved. Delphi is developing and expects to introduce a high-performance product that will provide increased value to the customer.

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