WO2013020353A1

WO2013020353A1 - Apparatus for mounting inline fuel injection pump and driving mechanism thereof for use in v-shaped engine

Info

Publication number: WO2013020353A1
Application number: PCT/CN2012/000844
Authority: WO
Inventors: 肖亨琳
Original assignee: 无锡开普动力有限公司
Priority date: 2011-08-05
Filing date: 2012-06-18
Publication date: 2013-02-14
Also published as: CN102330614B; CN102330614A

Abstract

An apparatus for mounting an inline fuel injection pump and a driving mechanism thereof for use in a V-shaped engine, comprising a cylinder block (1), a gear chamber housing (2), the inline fuel injection pump (3), a base (4), and a fuel pump driving mechanism (5). The gear chamber housing (2) is arranged on the cylinder block (1). Provided on a face integrating the gear housing (2) and the engine is a fuel pump gear bore. The cylinder block (1) is provided within a V-shaped angle thereof a mounting surface (1.1). The mounting surface (1.1) is processed from a front-end face of the cylinder block (1) to a rear-end face thereof. The fuel pump driving mechanism (5) and the inline fuel injection pump (3) are arranged sequentially on the base (4). The base (4) is arranged on the mounting surface (1.1) within the V-shaped angled of the cylinder block (1). The mounting apparatus is capable of increasing and reducing the length thereof as appropriate on the basis of different cylinder numbers of V-shaped engines, thus allowing for flexible matching of engine fuel-systems and for convenient maintenance.

Description

In-line fuel injection pump for V-type engine and mounting device thereof

The present invention relates to an in-line fuel injection pump for a V-type engine and a mounting device thereof, and more particularly to the technical field of power plants.

Background technique

The fuel system of the V-type engine adopts an in-line fuel injection pump. In order to make the whole structure compact, the fuel injection pump is installed in the V-angle of the engine cylinder block, and the gear drives the gear shaft, the diaphragm coupling and other driving mechanisms to drive the fuel injection pump. When it is necessary to cast and machine the mounting hole of the fuel injection pump drive mechanism on the engine cylinder block, the casting process is complicated; when the engine is required by the market, when matching the fuel injection pump of different positioning forms, the cylinder block of the engine cannot be universal; Disassembly and maintenance of the fuel injection pump drive mechanism, to make a large enough hole in the front end surface of the gear housing shell, the result is to weaken the strength of the gear housing shell and increase the probability of noise leakage from the gear train.

Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to overcome the above-mentioned deficiencies, and to provide an in-line fuel injection pump for a V-type engine and a driving device mounting device thereof, which can effectively reduce the difficulty in casting and machining the cylinder block, and improve the matching flexibility and maintenance efficiency of the whole machine.

According to the technical solution provided by the present invention, an in-line fuel injection pump for a V-type engine and a mounting device thereof are provided, including a cylinder block, a gear housing, an in-line fuel injection pump, a base, and an oil pump driving mechanism, wherein the gear housing is mounted on the cylinder The fuel pump gear hole is disposed on the joint surface of the gear chamber casing and the engine, and the in-line fuel injection pump and the oil pump drive mechanism are assembled and installed in the V-shaped angle of the cylinder block, and the characteristics are: A mounting plane is disposed in the V-shaped angle, the mounting plane is machined from the front end surface of the cylinder block to the rear end surface, and the fuel injection pump driving mechanism and the in-line fuel injection pump are sequentially mounted on the base, and the base is mounted on the V-clamp of the cylinder block. The angle of the mounting plane.

As a further improvement of the present invention, the base is provided with a bearing shell, the bearing shell is provided with a coaxial bearing hole, and an oil seal hole is arranged at the rear end of the bearing shell, and a hole for holding the retaining ring is arranged at the front end of the bearing shell.

As a further improvement of the present invention, the front end of the bearing shell is provided with a base flange perpendicular to the center of the bearing hole, the base flange is integrally formed with the bearing shell, and the base flange is provided with a bolt hole.

As a further improvement of the present invention, the base is provided with two rows of protrusions of a certain width, and the fuel pump mounting screw holes and the oil pump positioning holes are provided on the protrusions.

As a further improvement of the present invention, the outer sides of the protrusions are respectively provided with bolt holes corresponding to the bolt holes on the mounting plane of the V-shaped angle of the cylinder block. As a further improvement of the present invention, the joint surface on the base corresponding to the mounting plane of the V-shaped angle of the cylinder block is perpendicular to the base flange.

As a further improvement of the present invention, the joint surface is provided with a seal ring groove, and the seal ring groove groove is provided with a seal ring.

As a further improvement of the present invention, the cylinder block mounting plane is provided with a base mounting bolt hole. As a further improvement of the present invention, the in-line fuel injection pump and its driving mechanism can be integrally assembled and detached from the base on the engine.

The invention has the advantages of simple structure, compactness and reasonableness; the length can be appropriately increased and shortened according to the number of cylinders of the V-type engine, and the in-line fuel injection pump capable of matching different types of positioning can be matched according to the needs of the engine, such as arc positioning and positioning pin positioning, and the engine Other parts have no effect, making the engine fuel system flexible and easy to maintain.

DRAWINGS

Figure 1 is an exploded perspective view of the present invention.

Figure 2 is a schematic view of the overall structure of the assembly of the present invention.

Figure 3 is a partial longitudinal cross-sectional view showing the assembly of the present invention on a cylinder block.

detailed description

The invention will be further described below in conjunction with the embodiments of the drawings:

As shown in the drawing, the present invention mainly comprises a cylinder block 1, a gear chamber housing 2, an in-line fuel injection pump 3, a base 4, and an oil pump driving mechanism 5. The pump drive mechanism includes drive gear 5.1, drive gear shaft 5.2, oil pump gear compression bolt 5.3, large bearing 5.4, retaining ring 5.5, small bearing 5.6, oil seal 5.7, diaphragm coupling 5.8.

The in-line fuel injection pump for V-type engine and the mounting device thereof, including the cylinder block 1, the gear chamber housing 2, the in-line fuel injection pump 3, the base 4, the oil pump drive mechanism 5, and the gear housing 2 is mounted on the cylinder block 1 The free end of the gear housing 2 and the engine are provided with a fuel injection pump gear hole, and the in-line fuel injection pump 3 and the oil pump driving mechanism 5 are assembled and installed in the V-shaped angle of the cylinder block 1, A mounting plane 1.1 is disposed in the V-shaped angle of the cylinder block 1. The mounting plane 1.1 is machined from the front end surface of the cylinder block 1 to the rear end surface, and the fuel injection pump driving mechanism 5 and the in-line fuel injection pump 3 are sequentially mounted on the base 4. The base 4 is integrally hoisted to the mounting plane 1.1 of the V-shaped angle of the cylinder block 1 for installation. The mounting body 1.1 of the cylinder block 1 is provided with a mounting bolt hole of the base 4.

The base 4 of the present invention is provided with a bearing shell 4.1. The bearing shell 4.1 has a large bearing hole 4.1.1 and a small bearing hole 4.1.2, respectively. The large bearing hole 4.U and the small bearing hole 4.1.2 are sized according to the bearing. Set, stay There is a certain shoulder thickness to locate the axial movement of the bearing. At the rear end of the bearing shell 4.1, there is an oil seal hole 4.1.3. The front end of the bearing shell 4.1 is provided with a hole 4.1.4 for the retaining ring 5.5. Coaxial, at the front end of the bearing shell 4.1, a flange 4.2 is perpendicular to the center of the bearing hole, the flange 4.2 is integrated with the bearing shell 4.1, and a bolt hole is provided on the flange for mounting the base 4 on the gear housing shell 2. . The base 4 has two rows of protrusions 4.3 of a certain width. On the protrusions 4.3, the injection pump 3 can be arranged to install the screw holes and the oil pump is positioned. When the fuel injection pump 3 is positioned by the positioning pin, the positioning pin hole is machined on the protrusion; when the fuel injection pump is positioned by the circular arc, it is processed into an arc between the two rows of protrusions 4.3 to be positioned, and the bolt hole is processed on the protrusion 4.3 Install the fuel injection pump 3. On the outer side of the two rows of projections 4.3 of the base, there are respectively bolt holes 4.4 corresponding to the bolt holes on the mounting plane 1.1 of the V-shaped angle of the cylinder block 1. The joint surface 4.5 corresponding to the mounting plane 1.1 of the V-shaped angle of the cylinder block 1 on the base 4 is perpendicular to the base flange 4.2. When the V-angle of the cylinder block 1 is open, the base 4 is used as the cylinder block. 1 V-shaped angle sealing cover, the sealing ring groove 4.5.1 shall be provided on the joint surface 4.5, the sealing ring groove 4.5.1 groove shall be fitted with a sealing ring to serve as a sealing function, when the cylinder block 1 is V-shaped When the angle is closed, it is not necessary to set the seal ring groove 4.5.1 on the joint surface 4.5.

The fuel injection pump 3 is driven by a drive gear 5.1. The drive gear 5.1 transmits power to the fuel injection pump 3 through the drive gear shaft 5.2 and the diaphragm coupling 5.8. When the drive gear 5.1 is installed, the oil seal 5.7 is first loaded to the bearing housing 4.1. In the oil seal hole 4.1.3, the small bearing 5.6 is installed in the bearing hole 4.1.2, then the drive gear shaft 5.2 is inserted into the bearing shell 4.1, and then the large bearing 5.4 is loaded into the bearing hole 4.1.1. The retaining ring 5.5 is installed in the retaining ring hole 4.1.4, so that the driving gear shaft 5.2 can only rotate in the bearing shell 4.1, and the axial direction cannot move. At this time, the oil pump gear is used to press the bolt 5.3, and the driving gear 5.1 is tightened as required. On the drive gear shaft 5.2. The fuel injection pump 3 is hoisted on the base 4, and the installation of the diaphragm coupling 5.8 can be performed before and after the injection of the fuel injection pump 3. Then, the base 4 is integrally hoisted to the mounting surface of the V-shaped angle of the cylinder block 1. 1.1, and the mounting holes on the gear housing case 2 are aligned for assembly. If the fuel injection pump 3 and its drive mechanism 5 are to be repaired, simply loosen the mounting bolts of the fixed base 4, and remove the base 4 together with the fuel injection pump 3, or remove them separately, because the V-type engine cylinder block 1 is generally The fuel injection pump 3 itself is relatively heavy, and it is convenient to use the fuel injection pump 3 and its driving mechanism 5 on the base 4 as a whole.

Claims

Claim

1. An in-line fuel injection pump for a V-type engine and a mounting device thereof, comprising a cylinder block (1), a gear housing (2), an in-line fuel injection pump (3), a base (4), and an oil pump drive mechanism (5), the gear housing (2) is mounted on the cylinder block (1), and the fuel pump gear hole is disposed on the joint surface of the gear chamber housing (2) and the engine, and the cylinder block ( 1) The V-angle is provided with a mounting plane (1.1), which is machined from the front end face of the cylinder block (1) to the rear end face, the fuel injection pump drive mechanism (5) and the in-line spray The oil pump (3) is sequentially mounted on the base (4), and the base (4) is mounted on the mounting plane (1.1) of the V-angle of the cylinder block (1).

2. The in-line fuel injection pump for a V-type engine according to claim 1, and a mounting device thereof, wherein: the base (4) is provided with a bearing shell (4.1), and the bearing shell (4.1) There is a coaxial bearing hole inside, and an oil seal hole (4.1.3) is arranged at the rear end of the bearing shell (4.1), and a hole for retaining the ring (4.1.4) is provided at the front end of the bearing shell (4.1).

3. The in-line fuel injection pump for a V-type engine according to claim 2, and a driving device mounting device thereof, wherein: the front end of the bearing shell (4.1) is provided with a base flange (4.2) perpendicular to a center of the bearing hole The base flange (4.2) is integrated with the bearing housing (4.1), and the base flange (4.2) is provided with bolt holes.

4. The in-line fuel injection pump for a V-type engine according to claim 1, and a driving device thereof, wherein: the base (4) is provided with two rows of protrusions (4.3), the protrusions (4.3) There is a fuel injection pump (3) with screw holes and oil pump positioning holes.

The in-line fuel injection pump for a V-type engine according to claim 4, wherein the outer side of the protrusion (4.3) is provided with a bolt hole (4.4) and a cylinder block, respectively. (1) Corresponding to the bolt holes on the mounting plane (1.1) of the V-angle.

6. The in-line fuel injection pump for a V-type engine according to claim 1, and a mounting device thereof, characterized in that: a mounting plane of the V-shaped angle between the base (4) and the cylinder block (1)

(1.1) The corresponding joint surface (4.5) is perpendicular to the base flange (4.2).

7. The in-line fuel injection pump for a V-type engine according to claim 6, and a driving device thereof, wherein: the joint surface (4.5) is provided with a seal ring groove (4.5.1), and is sealed. Ring groove (4.5.1) There is a sealing ring in the groove.

8. The in-line fuel injection pump for a V-type engine according to claim 1, and a mounting device for the same, wherein: the mounting body (1) of the cylinder block (1) is provided with a mounting sill of the base Bolt hole.

9. The in-line fuel injection pump for a V-type engine according to claim 1, and a driving device mounting device thereof, wherein: the in-line fuel injection pump (3) and the driving mechanism (5) are integrated on the engine and the base Disassembly or disassembly.