Borgwarner Inc.

Joseph A Wilson

Murray Busato

Peter G Weissinger

James T McIntyre

Robert D Keefover

Michael J Halsig

Hal E Pringle

Robert Czarnowski

John W Duddles

Guy L Abbitt

Jeffrey A Malone

Micheal Hopkins, Jr

During normal operation of diesel engines the EGR valve poppet often becomes stuck to the valve seat in the closed position, due to excessive build up of exhaust gas debris, which renders the valve inoperable. This usually occurs after the engine is shut down and the valve is seated. Features, which locate the valve poppet in an unseated position when not in use, are implemented into the EGR valve design to prevent this sticking from occurring, thereby increasing product robustness and prolonging product life.

EGR valve having rest position

Mechanical systems having anti-stick mediums applied thereto are provided. In one aspect, exhaust gas recirculation (EGR) valve systems having anti-stick mediums applied thereto are also provided. The anti-stick medium can be applied to any contacting surface, such as but not limited to the valve surface and/or the valve seat surface. The anti-stick medium is intended to prevent the valve surface and the valve seat surface sticking or bonding together, especially with respect to the operation of cooled or cold side EGR systems. If any materials should stick to the anti-stick medium, a portion of the anti-stick medium will break away from the surface, allowing the surface and/or component to function normally. The anti-stick medium can include, without limitation, boron nitride coatings, boron nitride aerosols, boron nitride greases, thin dense chrome platings, perfluoroalkoxy, and combinations thereof.

Exhaust gas recirculation valve

An exhaust gas recirculation (EGR) arrangement having an intake manifold with a valve base assembly integrated with the engine's intake manifold. The valve base assembly has a valve seat positioned in the path of fluid flow through the valve base. A valve member is also contained in the valve base and is operably disposed in relation to the valve seat. An actuator is connectable with the valve base and with the valve member to open and close the valve seat in response to actuation of the actuator. The actuator can disconnect from the valve base and valve member.

Integrated valve

An anti-coking valve arrangement having a valve body that defines a passage for the flow of fluid medium. Valve seat and valve member positioned within the valve body and function to control the flow of fluid medium. A first anti-coking device is operably associated with the valve stem. A second anti-coking device is operably associated with the bearing guide member. A third anti-coking device is operably associated with the valve member and the valve seat. A fourth anti-coking device is operably associated with the valve stem and the bearing guide. A fifth anti-coking device is operably associated with the bearing guide. A sixth anti-coking device is operably associated between the valve stem and the bearing guide.

Valve having contamination counter-measures

A method of using algorithmic control to operate and protect an actuator. The first control strategy uses a soft stop control method where an actuator is driven toward a stop. The actuator control system senses when the actuator is nearing the stop. A control strategy is implemented where the actuator movement is dampened prior to reaching the stop so that the actuator does not strike the stop abruptly. Another control strategy of the present invention involves using the actuator control system to monitor and calculate the integral value of the electrical current flowing though the actuator to determine if the actuator is operating beyond on its suggested operating range. This strategy will help to maximize actuator operation while preventing damage due to overheating.

Growing community of inventors

Royal Oak, MI, United States of America

Joseph A Wilson