Caterpillar Inc.

Jayaramanaraman K Venkataraghavan

Stephen Robert Lewis

Avinash Reddy Manubolu

Shriprasad Gaurishankar Lakhapati

Nadeem N Bunni

A fuel injector for a common rail fuel system includes a common rail inlet port fluidly connected to a high pressure common rail, and a cooling inlet fluidly connected to an output from a lower pressure fuel transfer pump. The cooling fluid circulates internally through the fuel injector to cool a single pole solenoid via both internal and peripheral cooling passages. In order to accommodate a small spatial envelope while providing superior performance, a thin insulating layer may separate the solenoid coil winding from an inner pole piece, and small flux gap clearances may permit a flux carrying portion of the injector body to be a portion of the single pole solenoid assembly.

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Dunlap, IL, United States of America

Jayaramanaraman K Venkataraghavan