Device for admitting inlet gases and/or recirculated exhaust gases into an internal combustion engine cylinder

Patent metadata

Field	Value
Publication number	US-9874181-B2
Application number	US-201414904544-A
Country	US
Kind code	B2
Filing date	Jul 9, 2014
Priority date	Jul 26, 2013
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

The invention relates to a device for admitting inlet gases and/or recirculated exhaust gases into an internal combustion engine cylinder, the device comprising a duct designed to supply said cylinder with inlet gases and/or with recirculated exhaust gases, characterized in that said device further comprises, in the duct, a flow control means that can be operated between a first position in which said duct supplies the cylinder with the inlet gases and a second position in which said duct supplies the cylinder with the recirculated exhaust gases. It also relates to the intake module and to the engine equipped therewith.

First claim

The invention claimed is:

1. A device for introducing admission gases and/or re-circulated exhaust gases into a cylinder of an internal combustion engine, the device comprising:
a conduit configured for supplying said cylinder with admission gases and/or re-circulated exhaust gases, and
a flow control means for independently controlling the flow of admission gases and/or re-circulated exhaust gases to a single cylinder of the internal combustion engine, said flow control means having a first position and a second position,
wherein the first position supplies the cylinder with admission gases, and the second position supplies the cylinder with re-circulated exhaust gases.

2. The device according to claim 1 , further comprising an opening in a wall of the conduit for intake of the re-circulated exhaust gases.

3. The device according to claim 2 , wherein the flow control means comprises:
a rotatable gate inside the conduit, wherein said rotatable gate is rotatable around a transverse axis of the conduit and
a transverse portion,
wherein said transverse portion is configured to define said first and said second positions of said flow control means depending on the angular position of said gate.

4. The device according to claim 3 , wherein the conduit comprises:
a boss configured for accommodating at least one fraction of the transverse portion of the rotatable gate when it is found in said first position,
a device in which the opening for the arrival of the exhaust gases into said conduit is made in said boss, and
an external face of the transverse portion of the rotatable gate that is configured for coming into contact with an internal wall of said boss around said opening for arrival of the exhaust gases when the gate is in said first position.

5. The device according to claim 3 , wherein the transverse portion of the rotatable gate comprises an internal face, turned towards the inside of the conduit, and configured to form a portion of an internal surface of the wall of the conduit when the gate is in said first position.

6. The device according to claim 5 , wherein the internal face of the transverse portion of the rotatable gate is configured for connecting to the internal surface of the wall surrounding the conduit with shape continuity when the gate is in said first position.

7. The device according to claim 3 , wherein an internal face of the transverse portion of the gate is configured for forming a deflector of the exhaust gases when the gate is in said second position.

8. The device according to claim 1 , wherein the flow control means is substantially placed at a first opening of the conduit opposite to a second opening intended for feeding the cylinder.

9. The device according to claim 1 , wherein said device further comprises a controllable obturation means for the arrival of the exhaust gases that is adapted to hermetically close said arrival of the exhaust gases.

10. The device according to claim 9 , wherein the hermetic obturation means for the arrival of the exhaust gases is a valve.

11. The device according to claim 9 , wherein the means for controlling the flow control means in the conduit and the means for controlling the hermetic obturation means of the arrival of the re-circulated exhaust gases, are adapted to open said obturation means when said flow control means is in its second position and to close said obturation means when said flow control means passes into its first position.

12. The device according to claim 11 , wherein the means for controlling the flow control means and the means for controlling the obturation means form a single actuator.

13. An air admission module of an internal combustion engine comprising at least one device according to claim 1 .

14. An internal combustion engine comprising:
at least one cylinder,
a system for deactivating said cylinder(s), and
at least one device according to claim 1 ,
wherein said device is configured for feeding said cylinder and being controlled by the deactivation system.

15. An internal combustion engine comprising:
at least two deactivatable cylinders,
a system for deactivating at least two of said cylinders,
and at least two devices according to claim 1 ,
wherein each of said devices are configured for feeding one of said deactivatable cylinders and being controlled independently by said deactivation system.

16. The device according to claim 1 , wherein the first position completely blocks exhaust gases from the cylinder.

17. The device according to claim 1 , wherein the second position completely blocks admission gases from the cylinder.

18. The device according to claim 1 , wherein the first position exclusively supplies admission gases to the cylinder.

19. The device according to claim 1 , wherein the second position exclusively supplies exhaust gases to the cylinder.

20. The device according to claim 9 , wherein the first position exclusively supplies admission gases to the cylinder and completely blocks exhaust gases from the cylinder, and the second position exclusively supplies exhaust gases to the cylinder and completely blocks admission gases from the cylinder.

Assignees

• Valeo Systemes Thermiques

Inventors

• Odillard Laurent
• Guerra Julio

Classifications

• F02M26/21

  with EGR valves located at or near the connection to the intake system · CPC title

• F02M26/70

  Flap valves; Rotary valves; Sliding valves; Resilient valves · CPC title

• F02M26/20

  Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners · CPC title

• F02M26/64 Primary

  the EGR valve being operated together with an intake air throttle · CPC title

• F02B29/0475

  the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location · CPC title