Discharge valve and associated device

Patent metadata

Field	Value
Publication number	US-9732668-B2
Application number	US-201414766199-A
Country	US
Kind code	B2
Filing date	Feb 5, 2014
Priority date	Feb 7, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

The invention concerns a discharge valve ( 17 ) intended to be fitted in a discharge duct of an apparatus designed to be driven by a fluid, in particular a turbocharger driven by the exhaust gases from an engine. The discharge valve ( 17 ) comprises a cavity ( 83 ) having a first ( 85 ), a second ( 87 ) and a third aperture ( 89 ), each intended to be connected to a respective duct, the discharge valve ( 17 ) also comprising first ( 91 ) and second ( 93 ) means for closing the first ( 85 ) and second ( 87 ) apertures, respectively, in order to control communication between the ducts.

First claim

The invention claimed is:

1. An orientation device of exhaust gases at the outlet of cylinders of an engine, said device comprising:
a discharge valve configured to be connected to an output of at least a first cylinder of the engine,
the discharge valve being installed in a discharge duct of an apparatus, the apparatus being a turbocompressor configured to be driven by exhaust gases of the engine, said discharge valve comprising:
a cavity comprising a first, a second and a third aperture for connection to a respective duct;
first and second closing means of, respectively, said first and second apertures for controlling the establishment of communication of the ducts, the closing means being fixed on a guide pin configured to be movable in translation between a first closed position of the first aperture by the first closing means and a second closed position of the second aperture by the second closing means; and
an actuating means of the guide pin, the actuating means being able to be rotated and converting this rotational movement into a translational movement of the guide pin;

a recirculation valve for the exhaust gases configured to be connected to the output of at least a second cylinder of the engine; and
a duct interconnecting said discharge and recirculation valves.

2. The orientation device according to claim 1 , wherein the closing means of the discharge valve comprise a first valve and a second valve.

3. The orientation device according to claim 2 , wherein the guide pin of the discharge valve is a rod on which the first and the second valves are positioned.

4. The orientation device according to claim 1 , wherein the cavity of the discharge valve has a substantially tubular shape, the first and second apertures being positioned at both ends of the tube, the third aperture being formed on a sidewall of the tube.

5. The orientation device according to claim 1 , wherein the first aperture of the discharge valve is intended to be connected to a first portion of the discharge duct and wherein the second aperture of the discharge valve is intended to be connected to a second portion of the discharge duct.

6. The orientation device of exhaust gases according to claim 1 , wherein the recirculation valve of the exhaust gases comprises a body defining:
a main duct to be connected, firstly, to the output of the at least one second cylinder and, secondly, to a gas recirculation duct, and
an auxiliary duct opening into said main duct and designed to be connected to the third aperture of the discharge valve,
said recirculation valve further comprising orientation means of the exhaust gases configured to, in a first position, allow full recirculating while preventing communication between the main duct and the auxiliary duct, and, in a second position, to allow closure of the main duct to put in communication the main duct with the auxiliary duct.

7. The orientation device of exhaust gases according to claim 1 , wherein the closing means of the discharge valve are configured to be opened or closed depending on the configuration of the recirculation valve and/or the parameters of the engine.

8. The orientation device of exhaust gases according to claim 1 , wherein the orientation means of the recirculation valve are configured to be positioned according to the engine parameters and/or the configuration of the closing means of the discharge valve.

9. The orientation device according to claim 7 , wherein the engine parameters comprise at least one element among the following parameters:
the engine speed,
the pressure at the outlet of the cylinders,
the engine temperature,
the level of oxygen to the inlet of the cylinders, and
the gas flow recirculated at the intake.

Assignees

• Valeo Systemes De Controle Moteur

Inventors

• Hodebourg Grégory
• Potteau Sébastien

Classifications

• F02M26/43

  in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine · CPC title

• Y10T137/86919

  Sequentially closing and opening alternately seating flow controllers · CPC title

• F02B37/183 Primary

  Arrangements of bypass valves or actuators therefor · CPC title

• F02M26/70

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

• F02M26/51

  EGR valves combined with other devices, e.g. with intake valves or compressors (combined with intake air throttles F02M26/64) · CPC title