Ammonia generating device

• US 9,869,224 B2
• Filed: 05/31/2013
• Issued: 01/16/2018
• Est. Priority Date: 06/06/2012
• Status: Expired due to Fees

• Current Assignee: Faurecia Systemes D'Echappement (Faurecia SA)
• Original Assignee: Faurecia Systemes D'Echappement (Faurecia SA)
• Inventors: Bartolo, Xavier, Gafforelli, David
• Primary Examiner(s): Wongwian, Phutthiwat
• Assistant Examiner(s): Largi, Matthew T
• Application Number:
  US13/906,855
• Publication Number:
  US 20130327020A1
• Time in Patent Office: 1,691 Days
• CPC Class Codes: F01N 2610/02 the substance being ammonia or urea
• CPC Class Codes: F01N 2610/06 the substance being in the gaseous form
• CPC Class Codes: F01N 2610/10 the substance being heated, e.g. by heating tank or supply line of the added substance
• CPC Class Codes: F01N 2610/107 using glow plug heating elements
• CPC Class Codes: F01N 2610/1406 Storage means for substances, e.g. tanks or reservoirs
• CPC Class Codes: F01N 3/08 for rendering innocuous using electric or electrostatic separators F01N3/01; chemical aspects B01D53/92
• CPC Class Codes: F01N 3/2066 Selective catalytic reduction [SCR]
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y10T 137/8376 Combined

Abstract

An ammonia generating device is used for the treatment of exhaust gases of internal combustion engines, particularly for motor vehicles. The device includes a tank having a body capable of releasing ammonia by desorption. The device is also provided with a first single connection member comprising an electrical connection to supply the device with electricity and a fluid connection to allow evacuation of the ammonia produced following the desorption reaction.

Claims

1. An ammonia generating device to be used for the treatment of exhaust gases of internal combustion engines for motor vehicles, comprising:

a tank having a body capable of releasing ammonia by desorption;

a first single connection member comprising an electrical connection to supply the ammonia generating device with electricity and a fluid connection to allow evacuation of the ammonia produced following the desorption reaction; and

wherein the first single connection member is capable of being releasably assembled by a locking-unlocking system with a second single connection member connected to an electrical power supply as well as to an exhaust line of an engine, said second single connection member comprising an electrical connection and a fluid connection, and wherein the assembly of the first and the second single connection members causes the engagement with one another jointly of the electrical connections belonging respectively to the first and second single connection members and of the fluid connections belonging respectively to the first and second single connection members.

2. The device according to claim 1, including a heating device disposed within the tank to heat the body in the tank and to thereby induce the desorption reaction.

3. The device according to claim 1, wherein the body that is capable of releasing ammonia is in a form of flat discs whose exterior diameter has a shape that is complementary to an interior wall of the tank.

4. The device according to claim 1, wherein the tank is disposed within a protective receptacle.

5. The device according to claim 1, including at least one gripping handle.

6. The device according to claim 1, wherein the first single connection member and the locking unlocking system is controlled by a user.

7. The device according to claim 1, wherein the locking unlocking system is actuated by maneuvering a gripping handle.

8. The device according to claim 1, including a memory element that is read/write accessible to obtain information and details specific to the ammonia generating device and wherein the memory element comprises a radio frequency identification (RFID) chip.

9. The device according to the claim 1, wherein the locking-unlocking system is shiftable between a locking position in which the first and second single connection members are locked to one another and an unlocking position in which the first and second single connection members are not locked to one another, the shifting of the locking-unlocking system to the locking position causing the engagement with one another jointly of the electrical connections belonging respectively to the first and second single connection members and of the fluid connections belonging respectively to the first and second single connection members.

10. The device according to the claim 1, wherein the second single connection member is a single part bearing both the electrical connection and the fluid connection.

11. An ammonia generating device to be used for the treatment of exhaust gases of internal combustion engines for motor vehicles, comprising:

a tank having a body capable of releasing ammonia by desorption, wherein the tank is disposed within a protective receptacle;

a first single connection member comprising an electrical connection to supply the ammonia generating device with electricity and a fluid connection to allow evacuation of the ammonia produced following the desorption reaction; and

wherein dimensions of the protective receptacle are greater than dimensions of the tank such that a space is left between at least one wall of the tank and at least one wall of the protective receptacle.

12. The device according to claim 11, wherein the space is filled with an insulating foam to reduce a transfer of heat between walls of the tank and walls of the protective receptacle.

13. The device according to claim 11, wherein the protective receptacle comprises a discharge channel communicating with the space extending between the tank and the protective receptacle and adapted to evacuate the ammonia present in the space.

14. A motor vehicle comprising:

an ammonia generating device to be used for the treatment of exhaust gases of internal combustion engines, the ammonia generating device including a tank having a body capable of releasing ammonia by desorption, and a first single connection member comprising an electrical connection to supply the ammonia generating device with electricity and a fluid connection to allow evacuation of the ammonia produced following the desorption reaction;

a second single connection member connected to an electrical power supply as well as to an exhaust line of an engine, said second single connection member comprising an electrical connection and a fluid connection; and

wherein the first single connection member is capable of being releasably assembled by a locking-unlocking system with the second single connection member, and wherein the assembly of the first and the second single connection members causes the engagement with one another jointly of the electrical connections belonging respectively to the first and second single connection members and of the fluid connections belonging respectively to the first and second single connection members.

15. The vehicle according to claim 14, wherein the locking-unlocking system mechanism is designed to ensure that the ammonia generating device is maintained in position in a housing mounted in the vehicle.

16. A motor vehicle comprising:

an ammonia generating device to be used for the treatment of exhaust gases of internal combustion engines, the ammonia generating device including a tank having a body capable of releasing ammonia by desorption, and a first single connection member comprising an electrical connection to supply the ammonia generating device with electricity and a fluid connection to allow evacuation of the ammonia produced following the desorption reaction; and

a locking-unlocking system designed to ensure that the ammonia generating device is maintained in position in a housing mounted in the vehicle, and wherein the locking-unlocking system comprises a lever controlling engagement of first and second single connection members in a manner to enable the engagement with one another of the electrical connection and the fluid connection belonging respectively to the first and second single connection members.

17. The vehicle according to claim 16, wherein the lever controls the movement of pins intended to cooperate with openings provided in a wall of the ammonia generating device.