Modular ejector pump for a fuel delivery device

Patent metadata

Field	Value
Publication number	US-9726200-B2
Application number	US-201313936692-A
Country	US
Kind code	B2
Filing date	Jul 8, 2013
Priority date	Jul 6, 2012
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A modular ejector pump ( 1 ) for a fuel delivery device ( 39 ). The ejector pump ( 1 ) has a feed line ( 3 ) and a first nozzle ( 7 ). The feed line ( 3 ) is embodied to supply fuel ( 27 ) to the first nozzle ( 7 ). The ejector pump ( 1 ) furthermore has a second nozzle ( 9 ), which is arranged parallel to the first nozzle ( 7 ). The feed line ( 3 ) is embodied to supply fuel ( 27 ) to the second nozzle ( 9 ).

First claim

What is claimed is:

1. A fuel delivery device ( 39 ) for delivering fuel ( 27 ), the fuel delivery device ( 39 ) having
an ejector pump ( 1 ) including
a first passage ending in a first nozzle ( 7 ),
a second passage ending in a second nozzle ( 9 ), the second nozzle ( 9 ) being arranged parallel to the first nozzle ( 7 ),
a feed line ( 3 ) that supplies fuel to the first nozzle ( 7 ) via the first passage and the second nozzle ( 9 ) via the second passage,
a bubble line ( 21 ), and
an outlet line ( 31 ), which is configured to supply fuel ( 27 ) to a further ejector pump ( 33 ), and wherein the outlet line ( 31 ) is directly connected to the second passage at a location between the feed line ( 3 ) and the second nozzle ( 9 ); and

a bubble section ( 23 ) for collecting fuel ( 27 ) at a venting device ( 25 ),
wherein the bubble line ( 21 ) is connected to the bubble section ( 23 ), and
wherein the first passage and the second passage are independent branches of the feed line ( 3 ).

2. The fuel delivery device ( 39 ) according to claim 1 , furthermore having
wherein the bubble line ( 21 ) is arranged at an outlet of the second nozzle ( 9 ) in such a way that fuel ( 27 ) is sucked out of the bubble section ( 23 ) to the ejector pump ( 1 ) during the operation of the ejector pump ( 1 ).

3. The fuel delivery device ( 39 ) according to claim 2 , wherein a check valve ( 29 ) is provided on the bubble line ( 21 ); wherein the check valve ( 29 ) is configured to prevent return flow of fuel ( 27 ) in the direction of the bubble section ( 23 ).

4. The fuel delivery device ( 39 ) according to claim 1 , wherein the first nozzle ( 7 ) has a first diameter; wherein the second nozzle ( 9 ) has a second diameter; and wherein the second diameter differs from the first diameter.

5. The fuel delivery device ( 39 ) according to claim 1 , wherein the feed line ( 3 ), the first nozzle ( 7 ) and the second nozzle ( 9 ) are embodied integrally.

6. The fuel delivery device ( 39 ) according to claim 1 , wherein the second nozzle ( 9 ) is embodied as a separate component part.

7. The fuel delivery device ( 39 ) according to claim 1 , wherein the feed line ( 3 ) has a seal ( 35 ) on an outside.

8. The fuel delivery device ( 39 ) according to claim 1 , wherein an end of the outlet line ( 31 ) is barbed.

9. The fuel delivery device ( 39 ) according to claim 1 , further comprising a fuel reservoir, wherein the ejector pump ( 1 ) and a fuel pump ( 43 ) are arranged in the fuel reservoir, and wherein the fuel ( 27 ) collected from the bubble section ( 23 ) is transferred to the fuel reservoir.

10. The fuel delivery device ( 39 ) according to claim 1 , wherein the second passage branches off of the feed line ( 3 ) before the first passage.

11. The fuel delivery device ( 39 ) according to claim 10 , wherein the outlet line ( 31 ) branches off of the second passage downstream of where the second passage branches off of the feed line ( 3 ).

12. The fuel delivery device ( 39 ) according to claim 1 , wherein the outlet line ( 31 ) branches off of the second passage downstream of where the second passage branches off of the feed line ( 3 ).

13. The fuel delivery device ( 39 ) according to claim 1 , wherein the first passage and the second passage each orthogonally branch from the feed line ( 3 ).

14. A method for producing a fuel delivery device ( 39 ), the method having the following steps:
supplying a modular ejector pump ( 1 ) having a first passage ending in a first nozzle ( 7 ), a second passage ending in a second nozzle ( 9 ) arranged parallel to the first nozzle, a feed line ( 3 ) that supplies fuel to the first nozzle ( 7 ) via the first passage and the second nozzle ( 9 ) via the second passage, a bubble line ( 21 ), and an outlet line ( 31 ) that is configured to supply fuel ( 27 ) to a further ejector pump ( 33 ) and that is directly connected to the second passage at a location between the feed line ( 3 ) and the second nozzle ( 9 ), wherein the first passage and the second passage are independent branches of the feed line ( 3 );
supplying a bubble section ( 23 ) for collecting fuel at a venting device ( 25 ); and
connecting the bubble line ( 21 ) to the bubble section ( 23 ).

Assignees

• Bosch Gmbh Robert

Inventors

• Zmuda Slavomir
• Prochazka Vitezslav
• Malec Radek
• Janis Petr
• Pecha Miroslav

Classifications

• F04F5/466 Primary

  with a plurality of nozzles arranged in parallel · CPC title

• Y10T29/49236

  Fluid pump or compressor making · CPC title