Set of piston type fuel pumps for internal combustion engines with direct fuel injection

• US 7,281,519 B2
• Filed: 03/18/2004
• Issued: 10/16/2007
• Est. Priority Date: 05/20/2003
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schroeder, Bernd, Albrecht, Oliver, Rembold, Helmut, Schoepke, Manuel
• Primary Examiner(s): Moulis; Thomas
• Application Number:
  US10/556,078
• Publication Number:
  US 20070020131A1
• Time in Patent Office: 1,307 Days
• Field of Search: None
• US Class Current: 123/445
• CPC Class Codes: F02M 59/04 characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with rotary valve F02M59/362
• CPC Class Codes: F02M 59/06 with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
• CPC Class Codes: F02M 59/102 Mechanical drive, e.g. tappets or cams F02M45/063 takes precedence
• CPC Class Codes: F02M 59/366 Valves being actuated electrically
• CPC Class Codes: F02M 63/0225 Fuel-injection apparatus having a common rail feeding several injectors F02M63/0003 takes precedence; Means for varying pressure in common rails; Pumps feeding common rails
• CPC Class Codes: F04B 23/06 the pumps being all of reciprocating positive-displacement type
• CPC Class Codes: F04B 53/22 Arrangements for enabling ready assembly or disassembly

Abstract

A plurality of piston pumps form a set of piston pumps, each including one drive region and at least one pumping region. The a set of piston pumps includes at least two piston pumps of different models, and the pumping regions of all the piston pumps the set are embodied as structurally identical pumping modules.

Claims

1. In a set of piston pumps, in particular fuel pumps for internal combustion engines with direct fuel injection, each having one drive region and at least one pumping region, the improvement wherein the set of piston pumps comprises at least two piston pumps having different design, and the pumping regions of all the piston pumps of the set are embodied as structurally identical pumping modules, wherein the models in a set differ in the arrangement and/or number of the pumping modules.

2. The set of piston pumps according to claim 1, wherein the set of piston pumps includes identical structurally identical pumping modules and/or pumping modules that are mirror-reversed structurally identical to one another with respect to a longitudinal axis.

3. The set of piston pumps according to claim 1, wherein the drive regions of the piston pumps of a set are embodied as structurally identical drive modules each having a plurality of connection points for pumping modules, and wherein the set includes at least one piston pump whose drive module has a connection point at which there is no pumping module and which is instead closed by a closure element.

4. The set of piston pumps according to claim 3, wherein the drive modules have a uniform connection to different securing devices, with which the piston pump can be fixed.

5. The set of piston pumps according to claim 1, further comprising at least one piston pump having a pumping module which is inserted into the drive region.

6. The set of piston pumps according to claim 2, further comprising at least one piston pump having a pumping module which is inserted into the drive region.

7. The set of piston pumps according to claim 3, further comprising at least one piston pump having a pumping module which is inserted into the drive region.

8. The set of piston pumps according to claim 1, further comprising at least one piston pump whose drive region is integrated with an internal combustion engine.

9. The set of piston pumps according to claim 1, further comprising includes at least one piston pump, whose drive region is separate from the engine.

10. The set of piston pumps according to claim 2, further comprising includes at least one piston pump, whose drive region is separate from the engine.

11. The set of piston pumps according to claim 4, further comprising includes at least one piston pump, whose drive region is separate from the engine.

12. The set of piston pumps according to claim 1, further comprising at least one piston pump, in which all the fluid connections are located outside the at least one pumping module.

13. The set of piston pumps according to claim 1, further comprising at least one piston pump, whose drive region is coupled to a drive mechanism by means of a coupling device, and a device in the region of the drive mechanism with which lubricant is injected into the drive region.

14. The set of piston pumps according to claim 1, further comprising at least one piston pump having an overflow edge, by means of which the maximum height of a lubricant sump in the drive region is defined.

15. The set of piston pumps according to claim 1, further comprising at least one piston pump, whose drive region has a housing of lightweight metal.

16. The set of piston pumps according to claim 1, further comprising at least one piston pump, whose housing is produced as a forged or injection-molded part.

17. A piston pump, in particular a fuel pump for internal combustion engines with direct fuel injection, having one drive region and at least one pumping region, it is part of a set of piston pumps as recited in claim 1.