Internal combustion engine with turbine

Patent metadata

Field	Value
Publication number	US-9957882-B2
Application number	US-201615012594-A
Country	US
Kind code	B2
Filing date	Feb 1, 2016
Priority date	Feb 9, 2015
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Methods and systems are provided for controlling a turbine within an internal combustion engine. In one example, a turbine system within an internal combustion engine may include at least one turbine with a housing that may further include at least one impeller mounted on a rotatable shaft, inlet and outlet regions, and at least one overpressure line including a self-controlling valve for controlling the flow of exhaust gas.

First claim

The invention claimed is:

1. An internal combustion engine comprising:
an exhaust gas discharge system; and
at least one turbine comprising at least a turbine housing, and an impeller mounted on a rotatable shaft, wherein the turbine housing comprises:
an inlet region for a supply of exhaust gas, the inlet region being arranged upstream of the at least one impeller;
an outlet region for discharge of the exhaust gas, the outlet region being arranged downstream of the at least one impeller and adjoining the at least one impeller;
at least one exhaust gas-conducting flow duct which connects the inlet region to the outlet region via the impeller; and
one or more overpressure lines which branches off from the at least one exhaust gas-conducting flow duct upstream of the outlet region and which opens into the exhaust gas discharge system downstream of the at least one impeller, and wherein, a self-controlling pressure valve is arranged in the overpressure line, the pressure valve being arranged at an outlet side in the overpressure line, the turbine being equipped with a variable turbine geometry which comprises adjustable guide vanes, arranged in the inlet region of the turbine for influencing flow direction, wherein the overpressure line runs through a receptacle of the turbine which comprises a cassette-like form interior to and spaced away from the turbine housing.

2. The internal combustion engine of claim 1 , wherein at least one overpressure line opens into the outlet region downstream of at least one impeller.

3. The internal combustion engine of claim 2 , wherein at least one overpressure line branches off from at least one exhaust gas-conducting flow duct in at least one impeller.

4. The internal combustion engine of claim 3 , wherein at least one overpressure line branches off from at least one exhaust gas-conducting flow duct in the inlet region upstream of at least one impeller.

5. The internal combustion engine of claim 4 , wherein the pressure valve is arranged at an inlet side of the overpressure line.

6. The internal combustion engine of claim 1 , wherein at least two overpressure lines are provided.

7. The internal combustion engine of claim 1 , wherein the turbine housing is a monolithic cast housing.

8. The internal combustion engine of claim 1 , wherein the turbine housing is of modular construction.

9. The internal combustion engine of claim 1 , wherein the turbine is a radial turbine.

10. The internal combustion engine of claim 1 , wherein the turbine is an axial turbine.

11. The internal combustion engine of claim 1 , wherein the turbine is the turbine of an exhaust gas turbocharger.

12. A method, comprising:
via a controller, adjusting first and second overpressure relief valves of an engine exhaust turbine over-pressure line responsive to sensed engine operating conditions, the over-pressure line running through a receptacle of a turbine which comprises a cassette-like form positioned inside and spaced away from a turbine housing, the receptacle receiving variable vanes of a variable geometry turbocharger,
wherein an engine includes an exhaust passage with the turbine having at least the turbine housing, and an impeller mounted on a rotatable shaft, wherein the turbine housing comprises: an inlet region for a supply of exhaust gas, the inlet region being arranged upstream of the at least one impeller; an outlet region for discharge of the exhaust gas, the outlet region being arranged downstream of the at least one impeller and adjoining the at least one impeller; and at least one exhaust gas-conducting flow duct which connects the inlet region to the outlet region via the impeller; the overpressure line branching off from the at least one exhaust gas-conducting flow duct upstream of the outlet region and opening into an exhaust gas discharge system downstream of the at least one impeller.

13. The method of claim 12 , wherein the first and second valves are actuated responsive to a plurality of operating conditions comprising:
a first condition in which only the first pressure valve is opened responsive to a pressure sensor output at a first, lowest level,
a second condition in which only the second pressure valve is opened responsive to a pressure sensor output at a second level higher than the first level, and
a third condition in which both the first and second valves are opened responsive to a pressure sensor output at a third level higher than the second level.

Assignees

• Ford Global Tech Llc

Inventors

• Kemmerling Joerg
• Kindl Helmut Matthias
• Smiljanovski Vanco
• Sommerhoff Franz Arnd
• Kuske Andreas
• Wunderlich Frank

Classifications

• F02B2039/166

  the fluid pressure in the pump or exhaust drive being limited · CPC title

• F01D17/105

  by passing part of the fluid · CPC title

• Y02T10/144

  Cross-Sectional Technologies · mapped topic

• F02B37/183 Primary

  Arrangements of bypass valves or actuators therefor · CPC title

• F02B39/16

  Other safety measures for, or other control of, pumps · CPC title