Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Reexamination Certificate
2005-05-03
2005-05-03
Wolfe, Jr., Willis R. (Department: 3747)
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
C123S568170, C123S568240
Reexamination Certificate
active
06886544
ABSTRACT:
A system of operating an internal combustion engine is disclosed. The engine includes an engine block, an exhaust air system in fluid communication with the engine block, the exhaust air system having an exhaust air conduit, an intake air system in fluid communication with the engine block, the intake air system having an intake air conduit, and an intake air compressing device, an EGR system extending between the exhaust air system and the intake air system upstream of the intake air compressing device, and an ECM in communication with the EGR system. The EGR system includes an EGR injector, the EGR injector includes an EGR injector valve, an intermediate portion of intake air conduit, a throat portion positioned coaxially with the intermediate portion of intake air conduit. The throat portion extends radially inwardly of the intermediate portion of intake air conduit, the throat portion having a predetermined minimum diameter, and an end portion of an EGR conduit intersecting the intermediate portion of intake air conduit, the end portion of EGR conduit having an open end positioned coaxially with the intermediate portion of intake air conduit, the end portion of EGR conduit positioned upstream of the throat portion.
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Caterpillar Inc
Roberson Keith
Wieland Chris
Wolfe, Jr. Willis R.
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