公开(公告)号：WO2019077350A1

公开(公告)日：2019-04-25

申请号：PCT/GB2018/052995

申请日：2018-10-17

Applicant: CUMMINS LTD

Inventor： MCGEEHAN, Oscar Toby Elliott ,  BYWATER, John ,  GOODYEAR, Richard ,  HOLDEN, Mark R. ,  SANDFORD, George E.

IPC: F02B37/02 ,  F01D9/02 ,  F02B37/18 ,  F02B37/22 ,  F01D17/10

CPC classification number: F02B37/025 ,  F01D9/026 ,  F01D17/105 ,  F02B37/183 ,  F02B37/225 ,  F05D2220/40

Abstract: There is provided a turbine comprising: a turbine housing; a turbine wheel; an inlet upstream of the turbine wheel, the inlet defining a first inlet portion and a second inlet portion; an outlet downstream of the turbine wheel, the outlet defining a first outlet portion and a second outlet portion; and a wastegate arrangement configured to selectively vent exhaust gas from the first inlet portion to the first outlet portion via a first bypass passage, and further configured to selectively vent exhaust gas from the second inlet portion to the second outlet portion via a second bypass passage; wherein the first outlet portion and the second outlet portion are separated by a baffle of the turbine housing.

公开(公告)号：WO2019038541A1

公开(公告)日：2019-02-28

申请号：PCT/GB2018/052384

申请日：2018-08-22

Applicant: CUMMINS LTD

Inventor： DANIELS, Robin ,  MORTON, Thomas ,  ROBERTS, Thomas ,  PARRY, Christopher ,  GOODYEAR, Richard ,  HOLDEN, Mark R. ,  WILLEY, Donald E.

IPC: F02B37/18 ,  F16K11/085 ,  F01N3/20 ,  F02D41/02 ,  F02D41/00 ,  F02D9/06 ,  F16K5/18 ,  F16K5/20

Abstract: A valve system (30) for an engine arrangement. The valve system comprises a valve chamber (31) positioned at a junction of an inlet port (30b), an outlet port (30a) and a bypass port (30c), the inlet port (30b) configured for fluid communication with a flow of exhaust gas from an engine, the outlet port (30a) configured for fluid communication with an inlet (20a) of a turbine (20), and the bypass port (30c) configured for fluid communication with an exhaust aftertreatment device (24); a rotary valve comprising a valve rotor (39) which rotates about a valve axis within the valve chamber (31). The valve rotor (39) is rotatable about the valve axis between a first position in which the valve rotor permits gas flow through the bypass port (30c) and a second position in which the valve rotor blocks gas flow through the bypass port. At least one of the valve rotor and the valve chamber comprises a protrusion (148) and the other of the valve rotor and the valve chamber comprises a corresponding recess (150), wherein, in the first position, the protrusion and recess are spaced from one another, and, in the second position the recess receives the protrusion such that gas flow between the protrusion and recess is substantially prevented.

公开(公告)号：WO2019038540A1

公开(公告)日：2019-02-28

申请号：PCT/GB2018/052382

申请日：2018-08-22

Applicant: CUMMINS LTD

Inventor： DANIELS, Robin ,  MORTON, Thomas ,  ROBERTS, Thomas ,  PARRY, Christopher ,  GOODYEAR, Richard ,  HOLDEN, Mark R ,  KEATING, Jon-Luke ,  ALI, Waqas ,  BYWATER, John ,  WILLIAMSON, Gareth ,  DEACON, Ross ,  AL-KAZAZ, Laith

IPC: F02B37/18 ,  F16K5/18 ,  F16K5/20 ,  F16K11/085

Abstract: A rotary turbine bypass valve (30) comprises a valve chamber (31) positioned at a junction of an inlet port (30b), an outlet port (30a) and a bypass port (30c), the inlet port configured for fluid communication with a flow of exhaust gas from an engine, the outlet port configured for fluid communication with an inlet of a turbine, and the bypass port configured for fluid communication with an exhaust aftertreatment device; and a valve rotor (33a) supported for rotation, about a valve axis, within the valve chamber. The valve rotor is rotatable about the valve axis between a first position in which the valve rotor permits gas flow through the bypass port and a second position in which the valve rotor blocks gas flow through the bypass port. The valve rotor is eccentric such that it includes a seal portion (38) which is a portion of the valve rotor within the valve chamber which is furthest radially spaced from the valve axis; and as the valve rotor moves from the first position to the second position the seal portion moves towards the bypass port such that the radial separation between the valve rotor and the bypass port decreases to a minimum when the valve rotor is in the second position in which the seal portion is adjacent the bypass port.

公开(公告)号：WO2019034891A1

公开(公告)日：2019-02-21

申请号：PCT/GB2018/052340

申请日：2018-08-17

Applicant: CUMMINS LTD

Inventor： GOODYEAR, Richard ,  TAYLOR, Iain M. ,  HOLDEN, Mark R.

IPC: F01N13/18 ,  F02D9/06 ,  F02D9/04 ,  F02M26/70 ,  F16K1/22

Abstract: An exhaust throttle valve configured for use with a turbocharger. The exhaust throttle valve comprising a housing defining a duct configured to receive exhaust gas discharged from an outlet of the turbocharger; a valve member disposed within the duct and being movable between an open configuration in which flow of exhaust gas through the duct is permitted and a closed configuration the flow of exhaust gas through the duct is prevented or restricted; and a bearing member received by a bore of the housing and configured to support the valve member for rotation about a valve axis. The bore is closed at one end so as to substantially prevent leakage of exhaust gas through the bore.