Twin scroll turbocharger with EGR takeoffs
First Claim
Patent Images
1. A turbocharged in-line engine system comprising:
- a first scroll and a second scroll fluidically coupled to a turbine, the first scroll coupled to a first set of inner engine cylinders, the second scroll coupled to a second set of outer engine cylinders;
a first EGR takeoff including a first valve, the first EGR takeoff fluidically coupled to the first scroll;
a second EGR takeoff including a second valve, the second EGR takeoff fluidically coupled to the second scroll, the first and second valves coupled in a common housing, the first and second valves being dual butterfly valves where the dual butterfly valves are coupled to a common rotating shaft;
a turbine wastegate coupled around the turbine; and
an EGR conduit coupled to the first and second EGR takeoffs.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods for operating a twin scroll turbocharged engine with a junction configured to selectively control exhaust gas delivery to an exhaust gas recirculation system and a twin scroll turbine are provided.
-
Citations
22 Claims
-
1. A turbocharged in-line engine system comprising:
-
a first scroll and a second scroll fluidically coupled to a turbine, the first scroll coupled to a first set of inner engine cylinders, the second scroll coupled to a second set of outer engine cylinders; a first EGR takeoff including a first valve, the first EGR takeoff fluidically coupled to the first scroll; a second EGR takeoff including a second valve, the second EGR takeoff fluidically coupled to the second scroll, the first and second valves coupled in a common housing, the first and second valves being dual butterfly valves where the dual butterfly valves are coupled to a common rotating shaft; a turbine wastegate coupled around the turbine; and an EGR conduit coupled to the first and second EGR takeoffs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A turbocharged engine system, comprising:
-
a first scroll and a second scroll fluidically coupled to a turbine, the first scroll coupled to a first set of engine cylinders, the second scroll coupled to a second set of engine cylinders; a first EGR takeoff including a first valve, the first EGR takeoff fluidically coupled to the first scroll; a second EGR takeoff including a second valve, the second EGR takeoff fluidically coupled to the second scroll, both the first and second EGR takeoffs positioned in a junction therebetween; an EGR conduit coupled to the first and second EGR takeoffs downstream of the junction; and a dual-bore body housing the first and second valves, the housing having an engine mount having a substantially flat mounting portion coupled with an engine, and further having a turbine mount opposing the engine mount, the turbine mount having a substantially flat mounting portion coupled with the turbine. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification