Cummins Engine Company, Inc.

Cummins Inc.

Lucas Industries Limited

John D Lane

Mark S Cavanagh

Bela Doszpoly

Scott Robert Simmons

Bryan W Swank

Arpad M Pataki

Kent V Shields

Lester L Peters

Julius P Perr

Steven E Ferdon

Anthony A Cooper

Anthony A Shaull

David M Rix

Benjamin M Yen

Wesley R Thayer

W Beale Delano

Russ P Durrett

Philip J Dingle

Dennis M Ashwill

Gordon K Butler

Chung Y Liu

Luke Allen Jones

Yip Cheung Kwok

Alfred R Nerz

Frank R Hunt

Chris Sorg

Donald N Case

Richard D Kraus

Tunji Adejumo

Jy-Jen Frank Sah

Alexander Guluk

The present disclosure generally relates to a pumping element of a fuel pump for an internal combustion engine wherein the pumping element comprises a pumping chamber and a check valve assembly having a first insert including an angled passage in flow communication with a fuel outlet, and a second insert being disposed adjacent the pumping chamber, the second insert including a central bore in flow communication with a fuel inlet, a plurality of through holes in flow communication with the pumping chamber.

High pressure diesel fuel pump pumping element

An improved rotary fuel distributor is provided which effectively dynamically centers the rotor during operation while actively cooling the rotor and refilling fuel passages to minimize cavitation. A pressure balancing system is provided which includes pressure area defining grooves formed adjacent a rotor outlet port to control the pressure gradient in the clearance between the rotor and the distributor housing thereby effectively providing a more predictable force component which can be controlled to more effectively balance the rotor in conjunction with two balancing ports positioned on the opposite side of the rotor from the outlet port. A refill and cooling system is provided to continuously and actively cool the rotor with cool, low pressure fuel throughout rotation thereby displacing the hot fuel with cool fuel and effectively preventing thermal seizure of the rotor. The refill and cooling system also includes passages for effectively refilling delivery passages formed in the distributor housing while intermittently refilling supply passages with cool, low pressure fuel after each injection event.

Rotary distributor for a high pressure fuel system

Compact high performance fuel system with accumulator

A wear resistant, reduced stress at increased injection pressure fuel distributor assembly for distributing high pressure fuel to the fuel injectors of an internal combustion engine is provided. The assembly includes a fuel distributor rotor with a surface profile configuration that effectively and efficiently distributes high and low pressure fuel to the fuel injectors without internal fuel distribution channels. The rotor is preferably formed from a high thermal expansion, wear-resistant ceramic or coated metal material.

Wear-resistant fuel distributor rotor

A fuel injection rate shaping control system is provided which effectively controls the flow rate of fuel injected into the combustion chamber of an engine to improve combustion and reduce emissions by controlling the rate of pressure increase during injection. The injection rate shaping control system includes a rate shaping control device including a rate shaping transfer passage having a predetermined length and diameter specifically designed to create a desired injection pressure rate shape. In other embodiments of the present invention, two or more rate shaping transfer passages capable of producing distinct rate shapes are packaged in various fuel injection systems to selectively provide various rate shapes depending on operating conditions. Switching valves, i.e., solenoid operated three-way valves, may be used to direct the fuel or timing fluid flow to any one of the rate shaping transfer passages. Also, a dampening means in the form of a reverse flow restrictor valve is positioned in the rate shaping transfer passage to dampen reflected pressure waves thereby minimizing the adverse effects thereof.

Fuel injection rate shaping control system

A three-way valve including a valve housing having a valve chamber and a high pressure fluid supply inlet, high pressure fluid outlet and drain communicating with the valve chamber is disclosed. A movable member is reciprocally received in the valve chamber so as to be reciprocated between first and second positions for selectively fluidically communicating the outlet with either the inlet or drain. A first valve seat is formed in the valve housing and concentrically disposed in the valve chamber for sealing communication between the outlet and drain and a second valve seat is concentrically disposed in a cavity formed in the movable member for sealing communication between the inlet and outlet. A floating pin is received in the movable valve member cavity at a one end of the movable valve member and cooperates with the second valve seat for selectively sealing fluidic communication between the inlet and the outlet. An actuating device is mounted on the valve housing adjacent an end of the movable valve member opposite the floating pin for advancing the movable valve member toward the first position when energized and for allowing the movable valve member to retract to the second position when de-energized.

Compact pin-within-a-sleeve three-way valve

A pressure balanced three-way solenoid valve including a valve housing having a valve chamber and a high pressure fluid supply passage, high pressure fluid outlet passage and drain passage communicating with the valve chamber is disclosed. A movable valve member is reciprocally received in the valve chamber so as to be reciprocated between first and second positions for selectively fluidically communicating the outlet passage with either the supply passage or drain passage. A first valve seat is formed in the valve housing and concentrically disposed in the valve chamber for fluidic communication between the outlet passage and drain passage and a second valve seat is concentrically disposed in a cavity formed in the movable valve member for sealing communication between the supply passage and outlet passages. A floating pin is received in the movable valve member cavity and communicates with the second valve seat for selectively fluidic communication between the supply passage and outlet passage with the floating pin including an impact absorbing element for absorbing the impact of the movable valve member when the movable valve member contacts the floating pin during de-energization of the solenoid. Transitional losses are readily controlled and a high initial closing velocity may be achieved while preventing closing bounce and thus the formation of any leakage path between the floating pin and movable valve member upon de-energization of the solenoid.

Force balanced three-way solenoid valve

Growing community of inventors

Columbus, IN, United States of America

John D Lane