Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Reexamination Certificate
2006-09-07
2010-06-22
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
Reexamination Certificate
active
07740007
ABSTRACT:
A system for a vehicle, comprising of a diesel engine having an intake system and an exhaust system, a first EGR loop coupled between said intake system and said exhaust system and having a first valve and a first cooler located therein, a second EGR loop coupled between said intake system and said exhaust system and having a second valve and a second cooler located therein, and a control system operating the first and second valves in a first condition where both valves provide EGR flow to the engine, and at least temporarily increasing flow in the first EGR loop and decreasing flow in the second EGR loop when EGR flow is decreased to a condition where buildup in one of said coolers is increased.
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Alleman Hall McCoy Russell & Tuttle LLP
Castro Arnold
Cronin Stephen K
Ford Global Technologies LLC
Voutyras Julia
LandOfFree
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