Fuel vaporizer

Patent metadata

Field	Value
Publication number	US-9328701-B2
Application number	US-201414457587-A
Country	US
Kind code	B2
Filing date	Aug 12, 2014
Priority date	Aug 14, 2013
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

What is described is a fuel vaporizer comprising a housing which comprises an inlet opening with an internal thread, an inlet tube which is seated in the inlet opening. According to this disclosure, it is provided that the inlet tube comprises an undercut head and the inlet tube protrudes through a bushing the inside diameter of which is smaller than the outside diameter of the head, wherein the bushing comprises an external thread with which it is screwed into the inlet opening of the housing. What is additionally described is a kit for the production of a fuel vaporizer.

First claim

What is claimed is:

1. A fuel vaporizer, comprising:
a housing comprising an inlet opening with an internal thread;
an inlet tube seated in the inlet opening, the inlet tube comprising an undercut head;
a bushing through which the inlet tube protrudes, the inside diameter of the bushing being smaller than the outside diameter of the head; and
the bushing comprising an external thread with which the bushing is screwed into the inlet opening of the housing, wherein tightening the bushing moves the bushing toward the undercut head to secure the inlet tube in the inlet opening.

2. The fuel vaporizer according to claim 1 , wherein a ring is arranged between the bushing and the undercut head.

3. The fuel vaporizer according to claim 1 , wherein a spring is arranged between the bushing and the undercut head.

4. The fuel vaporizer according to claim 3 , wherein the spring is a corrugated ring spring.

5. The fuel vaporizer according to claim 1 , wherein the head comprises a conically tapering sealing surface which abuts against a truncated inner surface of the housing.

6. The fuel vaporizer according to claim 1 , wherein the bushing and the housing are formed of materials having different thermal expansion coefficients.

7. The fuel vaporizer according to claim 1 , wherein the housing is made of one of austenitic steel or ferrite steel and the bushing is made of the other of austenitic steel or ferrite steel.

8. The fuel vaporizer according to claim 1 , wherein the bushing projects from the housing and wherein the external thread of the bushing is only arranged on a section of the bushing that is completely seated in the housing.

9. The fuel vaporizer according to claim 1 , wherein the external thread and/or the internal thread are coated.

10. The fuel vaporizer according to claim 1 , wherein the bushing is surrounded by the housing over a largest part of its length.

11. A kit, comprising:
a housing of a fuel vaporizer, the housing comprising an inlet opening with an internal thread;
an inlet tube which comprises an undercut head; and
a bushing which comprises an external thread matching the internal thread;
wherein the inside diameter of the bushing is smaller than the outside diameter of the head and larger than the outside diameter of a section of the inlet tube, said section being arranged adjacent to the head;
further wherein the housing is made of austenitic steel or ferrite steel, and wherein the bushing is made of ferrite steel if the housing is made of austenitic steel or the bushing is made of austenitic steel if the housing is made of ferrite steel.

12. The kit according to claim 11 , wherein a lock washer is arranged between the bushing and the head.

13. The kit according to claim 11 , wherein a safety disk is arranged between the bushing and the head.

14. A fuel vaporizer, comprising:
a housing comprising an inlet opening with an internal thread;
an inlet tube seated in the inlet opening, the inlet tube comprising an undercut head;
a bushing through which the inlet tube protrudes, the inside diameter of the bushing being smaller than the outside diameter of the head;
the bushing comprising an external thread with which the bushing is screwed into the inlet opening of the housing; and
a lock washer arranged between the bushing and the undercut head.

15. The fuel vaporizer according to claim 14 , wherein tightening the bushing moves the bushing toward the undercut head to secure the inlet tube in the inlet opening.

16. The fuel vaporizer according to claim 14 , wherein the head comprises a conically tapering sealing surface which abuts against a truncated inner surface of the housing.

17. A fuel vaporizer, comprising:
a housing comprising an inlet opening with an internal thread;
an inlet tube seated in the inlet opening, the inlet tube comprising an undercut head;
a bushing through which the inlet tube protrudes, the inside diameter of the bushing being smaller than the outside diameter of the head;
the bushing comprising an external thread with which the bushing is screwed into the inlet opening of the housing; and
a safety disk arranged between the bushing and the undercut head.

18. The fuel vaporizer according to claim 17 , wherein tightening the bushing moves the bushing toward the undercut head to secure the inlet tube in the inlet opening.

19. The fuel vaporizer according to claim 17 , wherein the head comprises a conically tapering sealing surface which abuts against a truncated inner surface of the housing.

Assignees

• Borgwarner Ludwigsburg Gmbh

Inventors

• Eller Martin
• Wulff Nicolaus
• Hein Eric
• Inclan Tobias

Classifications

• F02M31/18 Primary

  to vaporise fuel · CPC title

• F01N2450/16

  by using threaded joints · CPC title

• F01N3/0253

  adding fuel to exhaust gases · CPC title

• F01N3/36 Primary

  Arrangements for supply of additional fuel · CPC title

• F02B1/04

  with fuel-air mixture admission into cylinder · CPC title