Stand-alone common rail capable injector system

US10544769B2 · kind B2 · utility

Assignee

• Caterpillar Inc. · US

Inventors

• Aaron Michael Brown · Seattle, US
• Cory A. Brown · Peoria, US
• Sridhar Thangaswamy · Dunlap, US
• Alan R. Stockner · Metamora, US
• Victor I. Yacoub · Nashville, US
• Zhenyu Li · Longbeilingcun, CN
• Lifeng Wang · Tochigi, JP
• Satya Naga Deepak Pillarisetti · Pontiac, US
• Scott F. Shafer · Morton, US
• Robert M. Campion · Chillicothe, US
• George Kodikulam Joseph · Pontiac, US

Key dates

• Filing date: Oct 6, 2017
• Grant date: Jan 28, 2020
• Expiry date: Feb 2, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/247
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel system is disclosed for use with an engine, including a fuel injector assembly fluidly coupled with a low-pressure fuel conduit, an accumulator, and a cap within an opening in the accumulator. The fuel injector assembly may be structured to draw in low-pressure fuel, pressurize the fuel, and store the pressurized fuel in the accumulator for injection to a combustion chamber. The cap has a pressure sensor and a pressure relief valve therein, and drains fuel leaked past fluid seals between the cap and each of the pressure sensor, the pressure relief valve, and the accumulator by way of a common drain line.