KR20010007490A - Improvements in pump housings for internal combustion engines - Google Patents

Abstract

PURPOSE: Provided is a pump housing with a simple structure. CONSTITUTION: This pump housing(10) to be mounted on an engine block in an internal combustion engine has a main unit(11) comprising a groove(22) for a coolant pump(16), a passage for coolant between an inlet(28) and outlets(36,38) with respect to the coolant pump(16), a groove(56) for a lubricant pump(20), and a passage for lubricant between an inlet(60) and outlet(62) with respect to the lubricant pump(20).

Description

Improved pump housings for internal combustion engines.

The present invention relates to a housing of a pump, such as a coolant pump for an internal combustion engine, a lubricating oil pump.

Many different types of pump housings are known for coolant pumps and lubricating oil pumps, and the object of the present invention is to improve these known techniques.

It is an object of the present invention to provide a pump housing that is simple to assemble and that can be attached to an engine block. Another object of the present invention is to reduce the total number of components of each of the coolant pump and the lubricating oil pump and to prevent external leakage from occurring in the engine block. Another object of the present invention is to provide a simple pump housing to facilitate the user's own engine block design. Another object of the present invention is to reduce the power consumption by the lubricating oil pump and to cool the lubricating oil in the pump housing. It is another object of the present invention to use at least a portion of the coolant from the coolant pump in a simple coolant pump housing to cool the lubricant.

1 is a rear view of a pump housing according to the present invention.

2 is a front view of the illustrated housing of FIG. 1.

3 is a right side view of the illustrated housing of FIG. 1.

4 is a front perspective view of the housing shown in FIGS. 1, 2 and 3;

FIG. 5 is a perspective view of the unitary body forming the housing shown in FIG. 4. FIG.

6 is an exploded perspective view of a housing according to the present invention.

7 is a schematic front view of a pump housing including a lubricating oil filtration device according to the present invention.

8 is a schematic side cross-sectional view of the filter housing of FIG. 7.

FIG. 9 is a schematic side view of the pump housing of FIG. 7 with the filter housing shown in FIG. 8.

Explanation of symbols on the main parts of the drawings

10: pump housing, 11: housing body,

16: refrigerant pump, 20: lubricant pump,

44: cooler bore, 80: lubricant filtration device.

A first aspect of the invention is provided with a pump housing for installation on an internal combustion engine engine block, the pump housing having a seat for the coolant pump, for delivery of coolant between an inlet entering the coolant pump and an outlet from the coolant pump. It is provided with an integral body provided with a passage for the transfer of lubricant between a passage, a seat for the lubricant pump, an inlet into the lubricant pump and an outlet from the lubricant pump.

Preferably, the housing further includes a heat exchanger for lubricating oil. The heat exchanger is preferably a cooler consisting of fins and plates cooled by a coolant pumped by a coolant pump. The passage for the coolant pump is preferably such that the coolant can flow to the lubricating oil heat exchanger.

In a preferred form, two or more separate flow passages are provided for the coolant in the housing. In one form, the coolant pump is provided with two outlets so that the coolant can be pumped separately in two directions. One of these two outlets preferably allows the coolant to flow to the lubricating oil heat exchanger.

The housing preferably further includes a lubricating oil pressure relief valve and a delivery passage to return the lubricating oil from the relief valve to the lubricating oil pump to enable recirculation of the lubricating oil.

Another aspect of the invention includes a seat having a seat for the coolant pump and further two separate passages into or out of the pump to allow the coolant to flow separately through two separate paths within the housing. It is to provide a coolant pump. Preferably two outlets are provided in the coolant pump.

Another aspect of the invention is to have one or more of the features described in the preferred embodiment.

Another aspect of the present invention is to provide a pump housing having an integrated lubricating oil filtration device and installed on the housing of the internal combustion engine block. The oil filtration device preferably has a suitable inlet and outlet passage so that the filter housing is integrally installed in the pump housing and the oil is directed into the filter housing. In addition, the pump housing may have one or more of the features described in connection with other inventive aspects of the present invention or described in the preferred embodiments.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to the drawings, the housing 10 according to the present invention is an integral body having an outer surface 12 and an inner surface (contact surface) 14 provided to be paired with or installed on the engine block. 11) is provided. The housing 10 further includes a water or coolant pump 16, a lubricant cooler 18, a lubricant or an oil pump 20. The housing 10 is adapted to be mounted on an engine block around the crankshaft and has a hole 13 defined by a rim 15 supporting the crankshaft seal. The housing 10 also further comprises a lower side 17 adjacent to an oil sump casing or the like and a bolt 19 for attachment of an idle pulley if necessary.

Referring in detail with reference to FIG. 1, a seating portion 22 is formed which forms part of the water pump 16. The water pump 16 is provided with a central hole 24 for the drive shaft which extends from the pulley 25 (see FIGS. 2 and 4) and preferably has an integral bearing, for example an impeller vane ( A seating portion 26 is provided for the pump rotor having a not shown. Coolant, such as water, enters through the inlet 28 provided for supplying the coolant to the housing 10 and passes through the opening 30 adjacent the seating portion 26 for the pump rotor to the pump 16. . The pump rotor is provided with, for example, radial impeller blades to cool the coolant from the opening 30 to the first and second radially outer volutes 32, 34 and again to the outer volute 32. ), (34) push out each exit 36, 38 at each end.

The outlet 36 is preferably connected directly to the inlet hole in the engine block to allow circulation of the coolant in the engine block.

However, the outlet 38 is connected to a shaped cover plate 42 which is installed on the body 11 of the housing 10 using a co-operating flange to form part of the coolant flow passage. Is connected to the passage section or tube 40 to. The plate 42 then directs the flow of coolant in the direction of the arrow W towards the continuing section of the coolant flow passage in the form of a cylindrical section 44, which, as will be described later, serves as an oil cooler. It was adopted to do so. The coolant or water continues to flow in the direction of arrow W and flows to the second shaped cover plate 46 and exits through the passage section 48 consisting of a tube section and a bore provided in the body 11 at the cover plate 46. Flow into (50) and back into the housing body (11). The coolant may again be delivered to the opening in the engine block through the outlet 50.

Thus, the double volute is divided into two volutes 34, 32, which allow the flow through the outlet 36 to enter the engine block. The volute 34 causes the flow to flow through the tube 40 to the cooler bore 44 to merge with the flow from the orifice 36 and then enter the engine block at the outlet 50.

The pressure at the outlet 50 and the outlet 36 is preferably substantially the same. This is achieved by varying the volume flow rate by varying the volute angle and the size of the orifices, and compensating for the pressure loss along each path.

The outlet 36 and outlet 50 are positioned adjacent to or adjacent to each other so that separate paths recombine so that they can pass through the engine block through a single flow passage in the engine block and then flow to the radiator for final It is desirable to return to the inlet 28 of the housing 10.

Preferably, a heat exchanger (not shown) for oil is provided in the pump housing 10. In a preferred form, a cooler consisting of a fin and a plate is provided in the cylindrical section 44 to which the oil inlet 52 and the oil outlet 54 are connected, so that when the oil flows in the cylindrical section 44 in the direction of arrow W Cooling is achieved by a cooler consisting of fins and plates provided in the section 44. The section 44 may be provided in part by a wall defining a gallery when the housing 10 is installed in the engine block, with oil being supplied from the engine block to the gallery through the holes 52 therein. Oil passing through the outlet 54 can be returned to the engine block. However, the inlet or outlet can be fed directly from or to the oil pump 20.

Next, referring to the oil pump 20 in detail, as shown in FIG. 1, a seating portion or a chamber 56 is provided for a pump (not shown), such as a rotor pump, and a drive shaft (not shown) of the rotor pump. Can be placed on the seat 58. The pump 20 has an inlet 60 which is provided with an outlet of the engine block so as to supply oil into the pump, or an inlet pipe from a pump located above the engine block, for example. The oil is then pumped back to the engine block through the outlet 62. Cover plate 68 is used to wrap pump 20 as shown in FIGS. 2, 4, 5, and the like. Another inlet 64 is provided for recirculating oil from the pressure relief valve 66. The supply to the relief valve can be sent to the oil passage section in the engine block in fluid contact with the chamber 65 in the housing body 11.

6 shows a second embodiment of a pump housing 110 which is generally similar to the housing 10 according to the invention. Thus, the number of components is given a leading 1 and two identical reference numbers. As the pulley 125 rotates, the rotor 123 having impeller blades provided for efficient flow of the coolant in the coolant pump rotates, so that the coolant passes through the coolant inlet 128 provided in the housing 110. Is supplied. A series of perforated protrusions 119 is provided to facilitate the installation of the housing 110 on the engine block, and if necessary, one idle pulley 127 is provided to be adjacent to the pulley 125.

7, 8, and 9 show a modified pump housing 10 having a lubricating oil filtration device 80, the lubricating oil filtering device 80 having a filter housing 82, a filter housing 82. The silver cap 84 is provided. Since the cap 84 is fastened with a screw or the like on the upper end of the cylindrical housing, it is possible to put the cylindrical filter cartridge in the filter housing 82. The filter device 80 has an oil inlet hole 86 adjacent the supply passage from the engine block. Preferably, the inlet hole 86 is surrounded by a seal such as an o-ring seal 88 provided on the annular flange surface surrounding the inlet hole 86. Internally, the filter housing 82 preferably has an outlet flange projecting upward in the cavity in which the cartridge filter 94 is housed. At the top of the annular flange 90 it is desirable to position the seal 92 to prevent mixing of the incoming unfiltered lubricant with the filtered filtered lubricant. Thus, the annular flange 90 is provided such that the outlet hole and the passage 96 are connected to a lubricating oil cooler which is a tube cooler or a cooler consisting of the fin and the plate.

In another form, the filter device 80 which forms a part of a case or block of an engine is provided, and a suitable inlet hole and an outlet hole are provided so that it may be connected with a pump housing, etc. are also possible.

The present invention allows the design of the components simultaneously by integrating the components in a single housing, and the flow rate through the single housing can be more accurately determined so that the efficiency is improved, for example by designing the required flow rate for the engine. There is this.

In particular, the losses incurred by the intermediate and secondary couplings between the components are reduced and further compact design is possible, which reduces the losses due to the pipe connection. In addition, there is an advantage that fewer failures by fewer couplings and connectors between the components. Thus, the number of housing components is reduced compared to the existing technology, which has the advantage of simplifying the assembly of the engine. Moreover, the integration characteristics of the housing provide a single product with a component that has a relatively increased size compared to products where existing components exist separately in the same size space, thereby improving the optimization of rigidity and the product in use. Reducing the occurrence of tuning in the interior minimizes system resonance and reduces noise generation.

Claims (15)

A seat for the coolant pump; A passage for delivery of coolant between the inlet entering the coolant pump and the outlet from the coolant pump; A seat for a lubricant pump; A pump housing for an internal combustion engine installed in an internal combustion engine engine block, characterized in that it has an integrated body provided with a passage for the transfer of lubricant between an inlet entering the lubricant pump and an outlet from the lubricant pump. The pump housing of claim 1, wherein the pump housing further comprises a heat exchanger for lubricating oil. 3. The pump housing of claim 2, wherein the heat exchanger includes a cooler consisting of a fin and a plate. 4. The pump housing of claim 3, wherein the heat exchanger is cooled by a coolant pumped by a coolant pump. 5. The pump housing for an internal combustion engine according to claim 4, wherein a coolant pump passage is provided for allowing the coolant to flow to the lubricating oil heat exchanger. The pump housing according to any one of claims 1 to 5, wherein said pump housing is provided with two or more divided flow passages for cooling. 7. The pump housing of claim 6, wherein the pump housing has two outlets from the coolant pump to enable the coolant to be guided in two separate directions. 8. The pump housing of claim 7 wherein one of said outlets is capable of flowing coolant to a lubricating oil heat exchanger. 6. The pump housing according to any one of claims 1 to 5, wherein the pump housing further includes a lubrication pressure relief valve and a delivery passage so as to recycle the lubricant back from the relief valve to the lubricating oil pump. . The pump housing according to any one of claims 1 to 5, wherein the pump housing further comprises an integrated lubricating oil filtration device. Seating grooves for the coolant pump; And a body provided with two separate passages into or out of the pump such that the flow of coolant can be separated along two different paths within the housing. 12. The pump housing according to claim 11, further comprising two outlets exiting said coolant pump. 13. The pump housing according to claim 11 or 12, wherein the pump housing further comprises an integrated lubricating oil filtration device. A pump housing for an internal combustion engine for installation in an internal combustion engine engine block, characterized by comprising an integrated lubricating oil filtration device. 15. The pump housing according to claim 14, wherein the oil filtration device of the pump housing is integrally installed in the pump housing and has an appropriate inlet passage and an outlet passage for directing oil to the filter housing.