Caterpillar Inc.

Mohammed Rafi H

Ye Tian

Kranti Kumar Nellutla

Gregory Lance Armstrong

Brian P Brennan

James Ulstad

Sasidhar Rayasam

Purvarag S Shah

Purna Chandra Sekhar Mokkarala

A fuel delivery system for an engine is provided. The fuel delivery system includes a fuel rail, a pressure sensor, a relief valve, and a controller. The controller is configured to receive a signal indicative of a fuel rail pressure, identify exceeding of the fuel rail pressure beyond a first threshold, identify the fuel rail pressure drop below a second threshold, and initiate a counter for a first predefined amount of time accordingly. The controller is also configured to identify if the fuel rail pressure drops below a third threshold within the first predefined amount of time, and identify if the fuel rail pressure remains below the third threshold for at least a second predefined amount of time. The controller is further configured to determine an open status of the relief valve based, at least in part, on the identification.

Fuel delivery system

Growing community of inventors

Chennai, India

Mohammed Rafi H