Exhaust gas recirculation system module with integral vacuum
First Claim
1. A system module for recirculating exhaust gases from an internal combustion engine to an intake manifold of the internal combustion engine, the system module comprising:
- a body including a passageway between an exhaust gas inlet and an exhaust gas outlet,an orifice constricting the flow of exhaust gases proximate the exhaust gas outlet,differential pressure sensor constructed and arranged to sense differential pressure across the orifice,a manifold absolute pressure sensor constructed and arranged to sense vacuum pressure associated with the exhaust gas outlet,a first hose coupled with the body and providing the differential pressure sensor with vacuum pressure on a first side of the orifice,a second hose coupled with the body and providing the manifold pressure sensor with said vacuum pressure, andan electric vacuum regulator (EVR) valve constructed and arranged to regulate vacuum pressure in the body,wherein the differential pressure sensor and the manifold absolute pressure sensor are both part of sensor structure that is in fluid communication with the EVR valve.
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Accused Products
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.
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Citations
13 Claims
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1. A system module for recirculating exhaust gases from an internal combustion engine to an intake manifold of the internal combustion engine, the system module comprising:
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a body including a passageway between an exhaust gas inlet and an exhaust gas outlet, an orifice constricting the flow of exhaust gases proximate the exhaust gas outlet, differential pressure sensor constructed and arranged to sense differential pressure across the orifice, a manifold absolute pressure sensor constructed and arranged to sense vacuum pressure associated with the exhaust gas outlet, a first hose coupled with the body and providing the differential pressure sensor with vacuum pressure on a first side of the orifice, a second hose coupled with the body and providing the manifold pressure sensor with said vacuum pressure, and an electric vacuum regulator (EVR) valve constructed and arranged to regulate vacuum pressure in the body, wherein the differential pressure sensor and the manifold absolute pressure sensor are both part of sensor structure that is in fluid communication with the EVR valve. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system module for recirculating exhaust gases from an internal combustion engine to an intake manifold of the internal combustion engine, the system module comprising:
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a body including a passageway between an exhaust gas inlet and an exhaust gas outlet, first means for sensing differential pressure across an orifice associated with the body, second means for sensing manifold absolute pressure associated with the exhaust gas outlet, means, directly coupled with the body, for providing the first means with vacuum pressure on a first side of the orifice, means, directly coupled with the body, for providing the second means with vacuum pressure, and an electric vacuum regulator (EVR) valve constructed and arranged to regulate vacuum pressure in the body, wherein the first and second means are both part of sensor structure that is in fluid communication with the EVR valve. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification