Coordination of HP and LP EGR

Details Coordination of HP and LP EGR Coordination of HP and LP EGR

2010-08-05

2011-10-25

Cronin, Stephen K (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S568210

Reexamination Certificate

active

08042527

ABSTRACT:
A method for charging an intake manifold of an engine comprises adjusting an LP EGR flow rate and an uncooled HP EGR flow rate within first limits to maintain a target dilution level in the intake manifold at steady-state. The method further comprises adjusting the LP EGR and uncooled HP EGR rates within second limits, different from the first, to maintain the target dilution level in the intake manifold during transient conditions.

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