CN117846740A - Engine and automobile - Google Patents

Abstract

The invention relates to an engine and an automobile, which comprises a machine body, a first part and a second part; the first component and the second component are both connected to the machine body; the engine body is provided with a first oil passage and a second oil passage which are connected in parallel, the first oil passage is used for conveying oil to the first part, and the second oil passage is used for conveying oil to the second part; the minimum cross-sectional area of the first oil passage is smaller than the minimum cross-sectional area of the second oil passage. When the engine is in operation, the oil pressure in the first oil passage is lower than the oil pressure in the second oil passage, so that the oil pressure of the oil output to the first component is smaller than the oil pressure of the oil output to the second component. Therefore, the problem that the oil leakage amount at the first part is large due to the fact that the oil pressure at the first part is too large can be effectively avoided, the displacement of an engine oil pump can be reduced on the premise that the oil quantity requirement of the second part is met, and further the power consumption of the oil pump is reduced, and the oil consumption of the engine is reduced.

Description

Engine and automobile

Technical Field

The invention belongs to the technical field of automobile engines, and relates to an engine and an automobile.

Background

In a lubrication system of an engine, oil is required to be output from an oil pan to a corresponding oil passage in a body of the engine by an oil pump, and then the oil flows to a first part and a second part of the engine sequentially along the oil passage.

In some scenarios, the oil required by the first component is less than the oil pressure required by the second component, and in order to meet the pressure demand of the second component, the pressure within the oil gallery is typically greater, such that the pressure of the oil at the first component is greater than its demand value. This can result in a greater amount of leakage of oil at the first component, and the oil pump needs to have a greater displacement on the premise of meeting the oil demand of the second component, thereby increasing the power consumption of the oil pump and resulting in increased fuel consumption of the engine.

Disclosure of Invention

The invention provides an engine and an automobile, and aims to solve the problems in the background art.

In order to solve the technical problems, in one aspect, an embodiment of the present invention provides an engine, including a machine body, a first component, and a second component; the first component and the second component are both connected to the machine body; the engine body is provided with a first oil duct and a second oil duct, the first oil duct is used for conveying oil to the first part, and the second oil duct is used for conveying oil to the second part; the first oil duct and the second oil duct are connected in parallel, and the minimum cross-sectional area of the first oil duct is smaller than that of the second oil duct.

Optionally, the first oil duct comprises a first section hole and a second section hole which are communicated with each other, and the second oil duct comprises a third section hole and a fourth section hole which are communicated with each other; the first section hole and the third section hole are both arranged on a cylinder cover of the engine body, and the second section hole and the fourth section hole are both arranged on a cylinder body of the engine body; the second section hole and the fourth section hole are communicated to a main oil duct of the cylinder body.

Optionally, the machine body further comprises a throttle block, and the throttle block is connected to the cylinder cover and/or the cylinder body; the throttle block is provided with a throttle hole which is communicated with the first section hole and the second section hole; the minimum cross-sectional area of the orifice is the minimum cross-sectional area of the first oil passage.

Optionally, the first component is a cam bearing and the second component is a VVT.

Optionally, the engine body is also provided with an air inlet side oil return duct and an exhaust side oil return duct; the air inlet side oil return channel comprises a fifth section hole and a sixth section hole, the fifth section hole is arranged on a cylinder cover of the engine body, and the sixth section hole is arranged on a cylinder body of the engine body; the number of the fifth section holes is greater than or equal to 1, and each fifth section hole is communicated with the sixth section hole; the exhaust side oil return channel comprises a seventh section of hole and an eighth section of hole, the seventh section of hole is arranged on a cylinder cover of the engine body, and the eighth section of hole is arranged on a cylinder body of the engine body; the number of the seventh section holes is greater than or equal to 1, and each seventh section hole is communicated with the eighth section hole.

Optionally, the number of the intake-side oil return channels is plural, and the number of the exhaust-side oil return channels is plural.

Optionally, a supercharger oil return duct is further arranged on the machine body, and the supercharger oil return duct is communicated with the eighth section of hole.

Optionally, the engine further comprises an oil pump, an engine filter seat, an oil cooler and an oil filter; the machine filter seat is connected to the machine body, and the oil cooler and the oil filter are both connected to the machine filter seat; the machine filter seat is provided with a first channel and a second channel; the two ends of the first channel are respectively connected with the oil pump and the oil inlet of the oil cooler, the two ends of the second channel are respectively connected with the oil outlet of the oil cooler and the oil inlet of the oil filter, and the oil outlet of the oil filter is communicated with a main oil duct of a cylinder body on the engine body.

Optionally, the engine further comprises a pressure detector, a third channel is further arranged on the filter base, one end of the third channel is communicated to the middle part of the first channel, and the other end of the third channel is connected with the pressure detector.

In order to solve the technical problems, on the other hand, an embodiment of the invention provides an automobile, which comprises the engine.

In the engine and the automobile provided by the embodiment of the invention, the first oil duct and the second oil duct are connected in parallel, the minimum cross-sectional area of the first oil duct is smaller than the minimum cross-sectional area of the second oil duct, and when the engine works, the oil pressure in the first oil duct is lower than the oil pressure in the second oil duct, so that the oil pressure of the oil liquid output to the first part is smaller than the oil pressure of the oil liquid output to the second part, and further, the purpose of conveying the oil liquid to the first part and the second part according to different oil pressure requirements is achieved. Therefore, the problem that the oil leakage amount at the first part is large due to the fact that the oil pressure at the first part is too large can be effectively avoided, the displacement of an engine oil pump can be reduced on the premise that the oil quantity requirement of the second part is met, and further the power consumption of the oil pump is reduced, and the oil consumption of the engine is reduced.

Drawings

FIG. 1 is a schematic diagram of an oil circuit system of an engine according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view I of an engine block of an engine according to one embodiment of the present invention;

FIG. 3 is a second partial cross-sectional view of the engine block of an engine according to an embodiment of the present invention;

FIG. 4 is a partial cross-sectional view III of an engine block of an engine according to an embodiment of the present invention;

FIG. 5 is a schematic illustration of an oil return passage of an engine according to an embodiment of the present invention;

fig. 6 is a schematic view of an oil passage on a filter base of an engine according to an embodiment of the present invention.

Reference numerals in the specification are as follows:

100. an engine;

10. a body;

20. a first component;

30. a second component;

40. an oil pan;

50. an oil pump;

60. a machine filter seat; 601. a first channel; 602. a second channel; 603. a third channel;

70. an oil cooler;

80. an oil filter;

90. a pressure detector;

1. a first oil passage; 11. a first section of aperture; 12. a second section of hole;

2. a second oil passage; 21. a third section of hole; 22. a fourth section of holes;

3. a throttle block; 31. an orifice;

4. a cylinder cover;

5. a cylinder; 51. a main oil duct of the cylinder body; 52. a third oil passage; 53. balance shaft oil duct; 54. an engine oil cooling nozzle oil passage; 55. a main journal oil passage; 56. a supercharger lubrication oil passage;

6. an intake-side oil return passage; 61. a fifth section of holes; 62. a sixth section of hole;

7. an exhaust side oil return passage; 71. a seventh hole; 72. an eighth section of hole;

8. the supercharger oil return passage.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1 and 2, in one embodiment, engine 100 includes a body 10, a first component 20, and a second component 30. Wherein the first member 20 and the second member 30 are both connected to the body 10; the engine body 10 is provided with a first oil duct 1 and a second oil duct 2, wherein the first oil duct 1 is used for conveying oil to the first part 20, and the second oil duct 2 is used for conveying oil to the second part 30; in addition, the first oil passage 1 and the second oil passage 2 are connected in parallel, and the minimum cross-sectional area of the first oil passage 1 is smaller than the minimum cross-sectional area of the second oil passage 2, so that the oil pressure in the first oil passage 1 can be made lower than the oil pressure in the second oil passage 2 when the engine 100 is operated, so that the oil pressure of the oil outputted to the first part 20 is smaller than the oil pressure of the oil outputted to the second part 30.

That is, in this embodiment, oil can be delivered to the first component 20 and the second component 30 according to different oil pressure requirements, so that the problem that the oil leakage amount at the first component 20 is large due to the overlarge oil pressure at the first component 20 can be effectively avoided, and thus the displacement of the oil pump 50 of the engine 100 can be reduced on the premise that the oil requirement of the second component 30 is met, the power consumption of the oil pump 50 can be further reduced, and the oil consumption of the engine 100 can be reduced.

In one embodiment, the first member 20 is a cam bearing and the second member 30 is a VVT (VVT is an abbreviation for Variable Valve Timing, chinese name variable valve timing system). At this time, the first oil passage 1 mainly supplies lubricating oil to the cam bearing to lubricate and cool the cam bearing. In addition, lubricating oil can be supplied to the high-pressure oil pump, the lifter and the camshaft through the first oil passage 1 so as to lubricate and cool the high-pressure oil pump, the lifter and the camshaft. The second oil passage 2 mainly supplies lubricating oil to the VVT to provide an operating pressure to the VVT, thereby achieving adjustment of the phase of the camshaft of the engine 100 by the VVT.

As shown in fig. 1 and 2, in an embodiment, a first oil passage 1 includes a first-stage hole 11 and a second-stage hole 12 that communicate with each other, a second oil passage 2 includes a third-stage hole 21 and a fourth-stage hole 22 that communicate with each other, and a body 10 includes a cylinder head 4 and a cylinder block 5; the first segment hole 11 and the third segment hole 21 are arranged on the cylinder cover 4, and the second segment hole 12 and the fourth segment hole 22 are arranged on the cylinder body 5.

In an embodiment, gaskets are provided between the cylinder head 4 and the cylinder block 5 in order to achieve a sealed connection between the cylinder head 4 and the cylinder block 5. In addition, the first section hole 11 and the third section hole form openings on the surface of the cylinder cover 4, which is close to the cylinder body 5, the second section hole 12 and the fourth section hole 22 form openings on the surface of the cylinder body 5, which is close to the cylinder cover 4, a first avoiding hole and a second avoiding hole are formed in the gasket, the first section hole 11 and the second section hole 12 are communicated through the first avoiding hole, and the third section hole 21 and the fourth section hole 22 are communicated through the second avoiding hole.

As shown in fig. 1, the cylinder 5 is provided with a cylinder main oil passage 51, and the second-stage hole 12 and the fourth-stage hole 22 are both communicated to the cylinder main oil passage 51. In operation, the oil first enters the main oil duct 51 of the cylinder body and then enters the second section hole 12 and the fourth section hole 22 respectively, so that the oil is more conveniently supplied to the first oil duct 1 and the second oil duct 2. In addition, the second-stage hole 12 is typically connected to the middle stage of the cylinder main oil passage 51, and the fourth-stage hole 22 is typically connected to the front end of the cylinder main oil passage 51.

As shown in fig. 3, in an embodiment, the body 10 further comprises a throttle block 3, the throttle block 3 being connected to the cylinder head 4 and/or the cylinder block 5. The throttle block 3 is provided with a throttle hole 31, and the throttle hole 31 is communicated with the first section hole 11 and the second section hole 12; the smallest cross-sectional area of the orifice 31 is the smallest cross-sectional area of the first oil passage 1. That is, in the present embodiment, the minimum cross-sectional area of the first oil passage 1 is made smaller than the minimum cross-sectional area of the second oil passage 2 by the provision of the throttle block 3. In addition, in the present embodiment, the minimum cross-sectional area of the first oil passage 1 is constant.

Furthermore, when the throttle body 3 is provided on the cylinder head 4, the throttle body 3 may be embedded in the first-stage hole 11. When the throttle body 3 is disposed on the cylinder 5, the throttle body 3 may be embedded in the second-stage hole 12. When the throttle block 3 connects the cylinder head 4 and the cylinder body 5 at the same time, both ends of the throttle block 3 may be respectively embedded in the first-stage hole 11 and the second-stage hole 12.

In an embodiment, the minimum cross-sectional area of the second oil passage 2 may also be constant.

As shown in fig. 2 to 5, in an embodiment, the engine body 10 is further provided with an intake-side oil return passage 6 and an exhaust-side oil return passage 7; the intake-side oil return passage 6 is located on a side of the intake-side camshaft of the engine 100 facing away from the exhaust-side camshaft, and the exhaust-side oil return passage 7 is located on a side of the exhaust-side camshaft of the engine 100 facing away from the intake-side camshaft. This arrangement makes the oil return of engine 100 smoother.

In addition, the number of intake-side oil return passages 6 is plural, so that oil return of engine 100 can be made smoother. Wherein "a plurality of" means greater than or equal to two. In the embodiment shown in fig. 5, two intake-side oil return passages 6 are provided, and one exhaust-side oil return passage 7 is provided.

As shown in fig. 2 and 5, in one embodiment, the intake-side oil return passage 6 includes a fifth-stage hole 61 and a sixth-stage hole 62, the fifth-stage hole 61 being provided in the cylinder head 4, the sixth-stage hole 62 being provided in the cylinder block 5; the number of fifth stage holes 61 is greater than or equal to 1. Each fifth-stage hole 61 communicates with the sixth-stage hole 62. In the embodiment shown in fig. 5, 2 fifth-stage holes 61 of one of the intake-side oil return passages 6 are provided, and 1 fifth-stage hole 61 of the other intake-side oil return passage 6 is provided.

As shown in fig. 4 and 5, in one embodiment, the exhaust-side oil return passage 7 includes a seventh hole 71 and an eighth hole 72, the seventh hole 71 being provided on the cylinder head 4 of the body 10, the eighth hole 72 being provided on the cylinder block 5 of the body 10; the number of seventh holes 71 is 1 or more, and each of the seventh holes 71 communicates with the eighth hole 72. In the exemplary embodiment shown in fig. 5, the seventh-stage holes 71 are provided with 1.

As shown in fig. 4, in an embodiment, the body 10 is further provided with a booster oil return passage 8, and the booster oil return passage 8 is provided on the body 10 and communicates with the eighth section hole 72. In operation of engine 100, oil delivered to the supercharger of engine 100 may flow back from supercharger oil return passage 8 into eighth-stage bore 72 and ultimately back into oil pan 40 of engine 100.

As shown in fig. 1 and 6, in one embodiment, engine 100 further includes an oil pump 50, an oil filter base 60, an oil cooler 70, and an oil filter 80. The filter base 60 is connected to the machine body 10, wherein the filter base 60 is actually connected to the cylinder 5, and the oil cooler 70 and the oil filter 80 are connected to the filter base 60. Wherein, the machine filter base 60 is provided with a first channel 601 and a second channel 602; two ends of the first channel 601 are respectively connected with oil inlets of the oil pump 50 and the oil cooler 70, two ends of the second channel 602 are respectively connected with an oil outlet of the oil cooler 70 and an oil inlet of the oil filter 80, and an oil outlet of the oil filter 80 is communicated with the cylinder main oil duct 51.

During operation, the oil pump 50 conveys oil in the oil pan 40 into the first channel 601, then the oil firstly enters the oil cooler 70, then enters the second channel 602 from the oil cooler 70, then enters the oil filter 80, finally enters the cylinder main oil duct 51 from the oil filter 80, and then enters the first oil duct 1, the second oil duct 2 and other oil ducts from the cylinder main oil duct 51; finally, the oil returns to the oil pan 40 through the intake-side oil return passage 6 and the exhaust-side oil return passage 7.

In addition, as shown in fig. 1, in an embodiment, a third oil passage 52 is further provided on the cylinder 5, and the oil pump 50 firstly delivers the oil in the oil pan 40 into the third oil passage 52, and then the oil enters the oil cooler 70 from the third oil passage 52.

In addition, as shown in fig. 1, the cylinder 5 is further provided with a balance shaft oil passage 53, an engine oil cooling nozzle oil passage 54, a main journal oil passage 55 and a supercharger oil passage 56, wherein the balance shaft oil passage 53, the engine oil cooling nozzle oil passage 54, the main journal oil passage 55 and the supercharger oil passage 56 are all communicated with the cylinder main oil passage 51. The balance shaft oil passage 53 is used for conveying oil to the balance shaft so as to lubricate and cool the balance shaft; the oil cooling nozzle gallery 54 is used to deliver oil to the pistons for lubrication and cooling of the pistons; the main journal oil passage 55 is used for conveying oil to the crankshaft so as to lubricate and cool the crankshaft and the connecting rod thereof; the supercharger oil gallery 56 is used to deliver oil to the supercharger for lubrication and cooling of the supercharger.

As shown in fig. 1 and 6, in an embodiment, the engine 100 further includes a pressure detector 90, and the filter base 60 is further provided with a third channel 603, one end of the third channel 603 is connected to the middle part of the first channel 601, and the other end of the third channel 603 is connected to the pressure detector 90. The pressure of the oil in the first passage 601 may be detected by the pressure detector 90 so as to monitor the pressure of the oil in time.

It should be appreciated that the above-described related arrangements may also be replaced in other ways, such as:

in other embodiments, the throttle block 3 may not be provided when the minimum cross-sectional area of the first oil passage 1 is constant, and in this case, the minimum cross-sectional area of the first-stage hole 11 may be the minimum cross-sectional area of the first oil passage 1, or the minimum cross-sectional area of the second-stage hole 12 may be the minimum cross-sectional area of the first oil passage 1.

In other embodiments, the minimum cross-sectional area of the first oil passage 1 is adjustable, at this time, the engine body 10 further includes a first throttle valve, and the first throttle valve is mounted on the cylinder head 4 or the cylinder body 5, and the oil passage of the first throttle valve is communicated with the first segment hole 11 and the second segment hole 12, at this time, the oil passage of the first throttle valve is part of the first oil passage 1, and by adjusting the first throttle valve, the adjustment of the minimum cross-sectional area of the first oil passage 1 can be achieved.

In other embodiments, the minimum cross-sectional area of the second oil passage 2 is adjustable, at this time, the engine body 10 further includes a second throttle valve, and the second throttle valve is mounted on the cylinder head 4 or the cylinder body 5, and the oil passage of the second throttle valve is communicated with the first section hole 11 and the second section hole 12, at this time, the oil passage of the second throttle valve is part of the second oil passage 2, and by adjusting the second throttle valve, the adjustment of the minimum cross-sectional area of the second oil passage 2 can be achieved.

In other embodiments, the number of the exhaust-side oil return passages 7 may be plural.

In other embodiments, the first and second members 20, 30 may be other members with different oil pressure requirements.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (10)

1. An engine is characterized by comprising a machine body, a first component and a second component;

the first component and the second component are both connected to the machine body;

the engine body is provided with a first oil duct and a second oil duct, the first oil duct is used for conveying oil to the first part, and the second oil duct is used for conveying oil to the second part;

the first oil duct and the second oil duct are connected in parallel, and the minimum cross-sectional area of the first oil duct is smaller than that of the second oil duct.

2. The engine of claim 1, wherein the first oil passage includes a first segment hole and a second segment hole in communication with each other, and the second oil passage includes a third segment hole and a fourth segment hole in communication with each other;

the first section hole and the third section hole are both arranged on a cylinder cover of the engine body, and the second section hole and the fourth section hole are both arranged on a cylinder body of the engine body;

the second section hole and the fourth section hole are communicated to a main oil duct of the cylinder body.

3. The engine of claim 2, wherein the body further comprises a throttle block connected to the cylinder head and/or the cylinder block;

the throttle block is provided with a throttle hole which is communicated with the first section hole and the second section hole;

the minimum cross-sectional area of the orifice is the minimum cross-sectional area of the first oil passage.

4. The engine of claim 1, wherein the first component is a cam bearing and the second component is a VVT.

5. The engine of claim 1, wherein the engine body is further provided with an intake-side oil return passage and an exhaust-side oil return passage;

the air inlet side oil return channel comprises a fifth section hole and a sixth section hole, the fifth section hole is arranged on a cylinder cover of the engine body, and the sixth section hole is arranged on a cylinder body of the engine body; the number of the fifth section holes is greater than or equal to 1, and each fifth section hole is communicated with the sixth section hole;

the exhaust side oil return channel comprises a seventh section of hole and an eighth section of hole, the seventh section of hole is arranged on a cylinder cover of the engine body, and the eighth section of hole is arranged on a cylinder body of the engine body; the number of the seventh section holes is greater than or equal to 1, and each seventh section hole is communicated with the eighth section hole.

6. The engine of claim 5, wherein the number of intake-side oil return passages is plural, and the number of exhaust-side oil return passages is plural.

7. The engine of claim 5, wherein said engine block is further provided with a supercharger oil return passage, said supercharger oil return passage being in communication with said eighth port.

8. The engine of claim 1, further comprising an oil pump, an oil filter base, an oil cooler, and an oil filter;

the machine filter seat is connected to the machine body, and the oil cooler and the oil filter are both connected to the machine filter seat;

the machine filter seat is provided with a first channel and a second channel;

the two ends of the first channel are respectively connected with the oil pump and the oil inlet of the oil cooler, the two ends of the second channel are respectively connected with the oil outlet of the oil cooler and the oil inlet of the oil filter, and the oil outlet of the oil filter is communicated with a main oil duct of a cylinder body on the engine body.

9. The engine of claim 8, further comprising a pressure detector, wherein a third channel is further provided on the filter base, one end of the third channel is connected to a middle portion of the first channel, and the other end of the third channel is connected to the pressure detector.

10. An automobile comprising the engine of any one of claims 1-9.