Exhaust gas recirculation system module with integral vacuum

Details Exhaust gas recirculation system module with integral vacuum Exhaust gas recirculation system module with integral vacuum

2007-11-13

2010-10-19

Cronin, Stephen K (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S568170, C123S568270, C123S568280, C123S568290, C123S568210, C123S568110, C073S114740, C251S129150, C137S907000

Reexamination Certificate

active

07814893

ABSTRACT:
A system module is provided for recirculating exhaust gases from an internal combustion engine to an intake manifold of the internal combustion engine. The module includes a body (12) including a passageway (41) between an exhaust gas inlet (32) and an exhaust gas outlet (34). An orifice (36) constricts the flow of exhaust gases proximate the exhaust gas outlet. A differential pressure sensor (38) is constructed and arranged to sense differential pressure across the orifice. A manifold absolute pressure sensor (42) is constructed and arranged to sense vacuum pressure associated with the exhaust gas outlet. A first hose (40) is coupled with the body and provides the differential pressure sensor with vacuum pressure on a first side of the orifice. A second hose (44) is coupled with the body and provides the manifold pressure sensor with vacuum pressure. The first and second hoses are integral with the system module.

REFERENCES:
patent: 5988149 (1999-11-01), Gates
patent: 6308694 (2001-10-01), Kotwicki et al.
patent: 6378507 (2002-04-01), Gagnon
patent: 6502564 (2003-01-01), Gagnon et al.

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