International Engine Intellectual Property Company, LLC

Kai Chen

Ning Lei

Tytus R Bulicz

Mahmoud S El-Beshbeeshy

Timothy J Prochnau

Scott R Peterson

A flow including air and exhaust gas is received at a boost pressure at a plurality of cylinders (). Exhaust gas is expelled from a first subset of the plurality of cylinders () into a first divided exhaust manifold (). Exhaust gas is expelled from a second subset of the plurality of cylinders into a second divided exhaust manifold (). The first subset and the second subset are different. An exhaust gas recirculation (EGR) system receives at an EGR inlet (orand) a part of the exhaust gas from the first divided exhaust manifold () and a part of the exhaust gas from the second divided exhaust manifold ().

Divided exhaust manifold system and method

An engine system (20) includes an intake system (26) through which charge air enters combustion chambers, and an exhaust system (28) that includes a CDPF (34), through which products of combustion pass to the surrounding atmosphere. A throttle valve (36) is located in The exhaust system (28) downstream of both the CDPF (34) and the turbocharger turbine (30). An EGR flow path for recirculating exhaust gas from the exhaust system to the intake system includes an EGR valve (48) for controlling EGR flow. The EGR flow path is connected to the exhaust system upstream of the throttle valve and downstream of both the CDPF and the turbine, and to the intake system upstream of the turbocharger compressor Valves (36, 48) are under coordinated control provided by an engine control system (24) for selectively restricting the respective valves to attain desired EGR flow.

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Villa Park, IL, United States of America

Kai Chen