Temperature controlled venturi for use with an EGR system in an internal combustion engine
AssigneeDeere & Company
InventorsJason Schneider, Bradley R. Watkins, Laurentiu Dobrila, Nathan Erickson, Randy Scarf, Doug Brocco
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Abstract
An EGR venturi for use in an EGR system of an IC engine includes a body defining a converging inlet section, a throat, and an interior liquid heat exchange chamber adjacent to the throat.
Claims27
An internal combustion (IC) engine, comprising:
- a block defining at least one combustion cylinder and a liquid recirculating coolant system;
- an intake manifold fluidly coupled with at least one said combustion cylinder;
- an exhaust manifold fluidly coupled with at least one said combustion cylinder;
- an EGR venturi fluidly coupled between said exhaust manifold and said intake manifold, said EGR venturi including a body defining a converging inlet section which is fluidly coupled with said exhaust manifold, a throat, and an interior liquid heat exchange chamber adjacent said throat, said heat exchange chamber being in fluid communication with said recirculating liquid coolant system ,wherein said body includes a first sensor port in communication with said throat and said first sensor port is substantially surrounded by said heat exchange chamber.
An exhaust gas recirculation (EGR) system for an internal combustion engine (IC), the internal combustion engine including an intake manifold, an exhaust manifold, and a recirculating liquid coolant system, said EGR system comprising:
- an EGR venturi, said EGR venturi including a body defining a converging inlet section which is fluidly coupled with said exhaust manifold, a throat, and an interior liquid heat exchange chamber adjacent said throat, said heat exchange chamber being in fluid communication with said recirculating liquid coolant system, wherein said body includes a first sensor port in communication with said throat and said first sensor port is substantially surrounded by said heat exchange chamber.
An exhaust gas recirculation (EGR) venturi having an exhaust gas flow passage for use in an EGR system of an internal combustion (IC) engine, said EGR venturi comprising a body defining a converging inlet section, a throat, and an interior liquid heat exchange chamber adjacent said throat and not in fluid communication with said exhaust gas flow passage ,wherein said body includes a first sensor port in communication with said throat and said first sensor port is substantially surrounded by said heat exchange chamber.
Dependencies are inferred from the claim text.