Victor I Yacoub

US Patent:

7108206, Sep 19, 2006

Filed:

Dec 4, 2002

Appl. No.:

10/309791

Inventors:

Victor I. Yacoub - Flanagan IL, US
Gene R. Slinkard - Pontiac IL, US
Charles D. Ellenbecker - Bloomington IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

B05B 1/00
B05B 1/30
B05B 7/30
F02M 51/00
F02M 14/60

US Classification:

239600, 2395851, 239353, 2395854, 2395332, 23953311, 285353, 285354, 285337, 1376255

Abstract:

The present invention broadly applies to any fluid valve made up of a plurality of body components that create sealing lands where the body components are clamped together. The invention is further applicable to any such valves in which pressure differentials within the valve can cause fluid leakage in the region of these sealing lands. Fluid leakage is reduced by locating at least some of these sealing lands within a hollow clamp that holds the valve body components together. This clamping strategy that locates the clamping load where it is needed most is applicable to a wide variety of valves, but is particularly applicable to pressure control valves used in fuel injection systems that experience extremely high pressure differentials during their usage.

US Patent:

7707993, May 4, 2010

Filed:

Jun 24, 2008

Appl. No.:

12/214928

Inventors:

Dana R. Coldren - Secor IL, US
Yongxiang Li - Peoria IL, US
Victor I. Yacoub - Washington IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02M 51/00
F02B 3/00

US Classification:

123473, 123299

Abstract:

A mechanically actuated electronically controlled fuel injector includes a first electrical actuator that controls the position of a spill value, and a second electrical actuator to control pressure on a closing hydraulic surface associated with a nozzle check valve. The fuel injector is actuated via rotation of a cam to move a plunger to displace fuel from a fuel pressurization chamber either to a spill passage or at high pressure out of a nozzle outlet of the fuel injector for an injection event. Pressure in the fuel injector is moderated when the plunger is moving and the nozzle check valve is in a closed position by briefly cracking open the spill valve to relieve some pressure during the dwell between injection events, such as between a large main injection event and a small close coupled post injection event. This strategy allows for longer dwell times between injection events as well as smaller injection quantities in the post-injection.

US Patent:

8333336, Dec 18, 2012

Filed:

Mar 6, 2007

Appl. No.:

11/714697

Inventors:

Stephen R. Lewis - Chillicothe IL, US
Dana R. Coldren - Secor IL, US
Jeffrey J. Mueller - Bloomington IL, US
Victor Yacoub - Washington IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

B05B 1/30

US Classification:

2395851, 2395855

Abstract:

A mechanically actuated electronically controlled unit injector includes an electronically controlled spill valve to precisely control timing of fuel pressurization within a fuel pressurization chamber. Cavitation bubbles may be generated in the region of the valve seat when the spill valve member is closed to raise fuel pressure in the fuel injector. This cavitation can cause erosion on the spill valve member and the surrounding injector body. In order to preempt cavitation damage, the valve member may be modified to include a compound annulus that includes a small annulus that corresponds to an identified cavitation damage pattern. Although the generation of cavitation bubbles may continue after such a strategy, cavitation erosion, and the associated liberation of metallic particles into the fuel system can be reduced, and maybe eliminated, by the preemptive cavitation reduction strategy.

US Patent:

20030116639, Jun 26, 2003

Filed:

Apr 18, 2002

Appl. No.:

10/125262

Inventors:

Michael Long - Germantown Hills IL, US
Xinshuang Nan - Bloomington IL, US
Hrishikesh Thaker - Peoria IL, US
Sudhindra Ayanji - Peoria IL, US
Victor Yacoub - Flanagan IL, US

International Classification:

F02M047/02

US Classification:

239/088000, 239/533200

Abstract:

A reverse flow valve member is positioned within an injector body of a fuel injector and is movable between a closed position and an open position. When the reverse flow valve member is in its closed position, an upper portion of a nozzle supply passage is blocked from fluid communication with a lower portion of the nozzle supply passage. A compressed spring biases the reverse flow valve member to its closed position. When the reverse flow valve member is in its open position, the fuel pressurization chamber is fluidly connected to the lower portion of the nozzle supply passage. The present invention limits gas ingestion due to tip leakage, and allows an injector with trapped gas to prime itself.

US Patent:

20100096473, Apr 22, 2010

Filed:

Oct 20, 2008

Appl. No.:

12/288422

Inventors:

Dana R. Coldren - Secor IL, US
Koti R. Padarthy - Edwards IL, US
Michael E. Sattler - Peoria IL, US
Victor I. Yacoub - Washington IL, US

International Classification:

F02M 47/02

US Classification:

239 90

Abstract:

A mechanically actuated electronically controlled fuel injector (MEUI) includes a first electrical actuator that controls the position of a spill valve, and a second electrical actuator to control pressure on a closing hydraulic surface associated with a directly operated needle valve. The fuel injector is actuated via rotation of a cam to move a plunger to displace fuel from a fuel pumping chamber either to a spill passage, or at high pressure out of a nozzle outlet of the fuel injector for an injection event. The minimum controllable fuel injection quantity, especially as it relates to small closely coupled post injections following a large main injection, is accomplished by the inclusion of a variable flow rate valve that restricts fluid flow from a needle control chamber toward a drain, but is relatively unrestricted to high pressure fluid flow toward the needle control chamber. The inclusion of the variable flow rate valve slows the rate at which pressure drops in the needle control chamber to commence an injection event, but permits a fast rate at which pressure may build in the needle control chamber to end an injection event. The result is a smaller post injection quantity and more controllability over the dwell time between injection events.

US Patent:

20200173408, Jun 4, 2020

Filed:

Dec 4, 2018

Appl. No.:

16/209058

Inventors:

- Deerfield IL, US
Victor Iskander Yacoub - Washington IL, US
Sridhar Thangaswamy - Dunlap IL, US
Cory Brown - Peoria IL, US
Robert Joseph Smith - Pontiac IL, US

Assignee:

Caterpillar Inc. - Deerfield IL

International Classification:

F02M 47/02
F02M 57/02

Abstract:

A fuel injector includes an injector body, and a stack within the injector body, and having a nozzle supply passage therein. The stack includes a solenoid assembly having a solenoid housing piece with a fuel bore formed therein that includes a segment of the nozzle supply passage. The solenoid housing piece includes a solenoid housing material in a base state, and a solenoid housing material in a residual compressive stressed state, with the fuel bore being formed by the solenoid housing material in the residual compressive stressed state. Residual stresses may be imparted by ballizing, nitriding, carburizing, autofrettage, or still another technique.

US Patent:

20180171881, Jun 21, 2018

Filed:

Dec 21, 2016

Appl. No.:

15/386627

Inventors:

- Peoria IL, US
Kevin James SCHREADER - East Peoria IL, US
Victor Iskander YACOUB - Washington IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02D 13/02
F01L 1/04
F01L 1/18
F01L 13/00

Abstract:

A valve actuation system is disclosed for an engine. The valve actuation system may have a variable valve actuator that is configured to engage a rocker arm and hold the valve at an open position regardless of motion of a cam lobe. The variable valve actuator may have a housing forming a chamber, a plunger disposed in the chamber, a control valve movable to control a flow of fluid into the chamber, and a relief valve configured to automatically open and release fluid from the housing when a pressure inside the chamber is below a predetermined pressure. The valve actuation system may further have a controller configured to cycle the control valve prior to start-up of the engine and to selectively move the control valve after start-up.

US Patent:

20180100476, Apr 12, 2018

Filed:

Oct 6, 2017

Appl. No.:

15/726950

Inventors:

- Peoria IL, US
Cory A. Brown - Peoria IL, US
Sridhar Thangaswamy - Dunlap IL, US
Alan R. Stockner - Metamora IL, US
Victor I. Yacoub - Washington IL, US
Zhenyu Li - Peoria IL, US
Lifeng Wang - Dunlap IL, US
Satya Naga Deepak Pillarisetti - Pontiac IL, US
Scott Shafer - Morton IL, US
Robert Michael Campion - Chillicothe IL, US
George Kodikulam Joseph - Pontiac IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02M 57/02
F02M 55/02
F02D 41/38
F02M 47/02

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.