Caterpillar Inc.

Drew Christopher Donnelli

Ye Tian

Joseph Shane Burkitt

A fuel delivery system for a combustion engine is provided. The fuel delivery system includes an exhaust treatment device, a fuel injection unit, a fuel supply, and a fuel pump. The fuel pump includes at least one inlet configured to receive fuel from the fuel supply. A first fixed-output pumping element is configured to generate a first fuel flow at a first pressure and a first flow rate. A second fixed-output pumping element is configured to generate a second fuel flow at a second pressure and a second flow rate. At least one of the second pressure and the second flow rate is different from the first pressure and the first flow rate. A first outlet is configured to direct the first fuel flow to the fuel injection unit. A second outlet is configured to direct the second fuel flow to the exhaust treatment device.

Fuel delivery system having multi-output pump

A fuel delivery system is provided for a combustion engine having an exhaust treatment device. The fuel delivery system includes a fuel supply, an injector configured to pressurize fuel and inject the pressurized fuel into the combustion engine, and a transfer pump configured to direct fuel from the fuel supply to the injector. The fuel delivery system also includes an electric pump configured to selectively direct fuel from the fuel supply to the injector during a priming event, and to selectively direct fuel from the fuel supply to the exhaust treatment device.

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Edwards, IL, United States of America

Drew Christopher Donnelli