CN114991927A

CN114991927A - Engine oil channel system, control method and vehicle

Info

Publication number: CN114991927A
Application number: CN202110229483.2A
Authority: CN
Inventors: 姜广梅; 潘世翼; 张楠; 王强; 李娟�
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2022-09-02
Anticipated expiration: 2041-03-02
Also published as: CN114991927B

Abstract

The application discloses engine oil duct system, control method and vehicle, engine oil duct system includes: a cylinder body; the oil duct assembly is arranged on the cylinder body; the piston cooling nozzles are respectively arranged on the oil duct assembly, are communicated with the oil duct assembly and are used for spraying oil in the oil duct assembly, and are opened or closed simultaneously; and the control valve is communicated with the oil duct assembly and controls the synchronous movement of the plurality of piston cooling nozzles by controlling the on-off of one part of the oil duct assembly. The engine oil duct system of the invention is characterized in that the plurality of piston cooling nozzles are arranged on the oil duct assembly, and the on-off of a part of the oil duct assembly is controlled by the control valve, so that the opening and closing of the plurality of piston cooling nozzles are simultaneously controlled, and the interference of the work of other oil supply oil paths when the control valve controls the plurality of piston cooling nozzles is prevented.

Description

Engine oil channel system, control method and vehicle

Technical Field

The application relates to the technical field of engines, in particular to an engine oil passage system, a control method and a vehicle with the engine oil passage system.

Background

When the vehicle is started, the engine works, and oil is supplied and returned to each running component through the engine oil channel system so as to lubricate or cool each running component.

A plurality of piston cooling nozzles (PCJ) in the existing engine oil channel system need to be controlled independently through different control valves, so that a plurality of branch oil channels in the whole engine oil channel system are provided.

Disclosure of Invention

An object of the present application is to provide a new technical solution for an engine oil passage system, a control method and a vehicle, which can at least solve the problem in the prior art that the number of branch oil passages in the engine oil passage system is large due to the fact that different control valves are arranged to control different piston cooling nozzles.

According to a first aspect of the present application, there is provided an engine oil gallery system including: a cylinder body; the oil duct assembly is arranged on the cylinder body; the piston cooling nozzles are respectively arranged on the oil duct assembly, are communicated with the oil duct assembly and are used for spraying oil in the oil duct assembly, and are opened or closed simultaneously; the control valve is communicated with the oil duct assembly and controls the synchronous movement of the piston cooling nozzles by controlling the on-off of part of the oil duct assembly.

Further, the oil passage assembly includes: the first main oil gallery is internally provided with a first oil feeding oil way; the second main oil gallery is arranged at a distance from the first main oil gallery, the second main oil gallery is internally provided with the second oil supply oil way, the second oil supply oil way is communicated with the first oil supply oil way, the control valve and the plurality of piston cooling nozzles are arranged in the second main oil gallery and are communicated with the second oil supply oil way, and the control valve controls the plurality of piston cooling nozzles to synchronously move by controlling the on-off of the second oil supply oil way.

Further, a first end of the second oil supply path is communicated with the first oil supply path, a second end of the second oil supply path is closed, the plurality of piston cooling nozzles are arranged on the second main oil duct at intervals along the axial direction of the second oil supply path, and the control valve is arranged at the first end of the second oil supply path to control the second oil supply path to be communicated with or disconnected from the first oil supply path.

Further, the first main oil duct and the second main oil duct are arranged in parallel, a first auxiliary oil duct is arranged at the first end of the first main oil duct, a second auxiliary oil duct is arranged at the second end of the second main oil duct, the first auxiliary oil duct and the second auxiliary oil duct are arranged in parallel, an inclined oil duct which is obliquely arranged relative to the first auxiliary oil duct and the second auxiliary oil duct is arranged between the first auxiliary oil duct and the second auxiliary oil duct, and the inclined oil duct is communicated with the first auxiliary oil duct and the second auxiliary oil duct to communicate the first oil feeding oil path and the second oil feeding oil path.

Further, the oil passage assembly further includes: the oil collecting cavity is used for collecting oil; and the oil return oil way is communicated with the oil collecting cavity so that the oil collected by the oil collecting cavity flows back through the oil return oil way.

Further, the engine oil gallery system further includes: the oil return way is arranged on the cylinder body and extends along the vertical direction, and the oil return way is internally provided with the oil return way.

Further, the oil collecting cavity is arranged on the top surface of the cylinder body, and the oil return channel comprises: the upper end of the first oil return pipe is communicated with the top surface of the cylinder body; the upper end of the second oil return pipe is communicated with the lower end of the first oil return pipe, the lower end of the second oil return pipe is communicated with the bottom surface of the cylinder body, and the first oil return pipe is matched with the second oil return pipe to penetrate through the top surface and the bottom surface of the cylinder body.

Furthermore, the first oil return pipe and the second oil return pipe are respectively conical pieces, the lower end of the first oil return pipe is provided with a first matching surface, the first matching surface is provided with a first bulge protruding downwards, and the lower surface of the first bulge is a second matching surface; the upper end of the second oil return pipe is provided with a third matching surface, the third matching surface is provided with a second bulge part protruding upwards, the upper surface of the second bulge part is a fourth matching surface, wherein the first matching surface and the fourth matching surface are mutually abutted, and the second matching surface and the third matching surface are mutually abutted.

According to a second aspect of the present application, there is provided a control method of an engine oil gallery system, including the steps of:

s1, acquiring the oil temperature, the engine speed and the engine load in the oil passage component;

s2, judging whether the oil temperature, the engine speed and the engine load in the oil passage assembly meet a first condition or a second condition;

s3, under the condition that the oil temperature, the engine speed and the engine load in the oil passage assembly meet the first condition or the second condition, the control valve controls a part of the oil passage assembly to be disconnected to close the piston cooling nozzle, and under the condition that the oil temperature, the engine speed and the engine load in the oil passage assembly do not meet the first condition or the second condition, the control valve controls a part of the oil passage assembly to be connected to open the piston cooling nozzle.

Further, the first condition is:

the temperature of oil in the oil duct assembly is lower than a first set value, the rotating speed of an engine is in a first threshold interval, and the load of the engine is in a second threshold interval;

the second condition is that:

the temperature of oil in the oil duct assembly is higher than a first set value, the rotating speed of the engine is in a third threshold interval, and the load of the engine is in a fourth threshold interval.

According to a third aspect of the present application, there is provided a vehicle including the engine oil passage system described in the above embodiment.

According to the engine oil channel system provided by the embodiment of the invention, the plurality of piston cooling nozzles are arranged on the oil channel assembly, and the on-off of one part of the oil channel assembly is controlled through the control valve, so that the opening and closing of the plurality of piston cooling nozzles are simultaneously controlled, and the control valve is prevented from interfering the work of other oil feeding channels when controlling the plurality of piston cooling nozzles.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural view of a cylinder block of the present invention;

fig. 2 is a side view of the cylinder block of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic illustration of the structure of an engine oil gallery system according to an embodiment of the present invention;

FIG. 5 is a schematic illustration of the structure of a second oil gallery assembly of the engine oil gallery system in accordance with the embodiment of the present invention;

FIG. 6 is another side view of the cylinder block of an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 6;

FIG. 8 is yet another side view of the cylinder block of an embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8;

FIG. 10 is a schematic diagram of a structure of an oil return passage according to an embodiment of the present invention;

FIG. 11 is a side view of an oil return gallery in accordance with an embodiment of the present invention;

fig. 12 is a partially enlarged view of the contact area of the insert pin according to the embodiment of the present invention.

Reference numerals:

an engine oil gallery system 100;

a cylinder body 10;

an oil passage assembly 20; the first main oil gallery 21; an oil inlet 211; the second main oil gallery 22;

the piston cooling nozzle 30;

a control valve 40;

an oil return passage 50; a first oil return pipe 51; a first mating face 511; a first boss 512; a second oil return pipe 52; a third mating surface 521; a second boss 522; an oil collection chamber 53; the insert pin contact area 54;

the first sub oil passage 61; the second sub-oil passage 62; the inclined oil passage 63; the first oil passage 64; the second oil passage 65; a first branch oil passage 66; a second branch oil passage 67; the third branch oil passage 68;

oil filter-oil cooler oil passage 71; chain tensioner oil groove 72.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The present application is an invention that the inventors of the present application have made based on the following facts.

The existing PCJ is usually controlled to open and close by a separate mechanical control structure, that is, the opening and closing of the PCJ are realized by the mechanical movement of an internal spring, the opening and closing of the PCJ are only affected by oil pressure, and under unnecessary working conditions (such as engine starting, low-speed working conditions, low-load working conditions and the like), the PCJ is also opened because the internal spring senses the oil pressure, so that the oil pump has a large displacement under the working conditions, and the load of the oil pump is increased.

Based on this, the inventors of the present application have innovatively derived the following invention through long-term research and experiments.

The engine oil passage system 100 according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, an engine oil gallery system 100 according to an embodiment of the present invention includes a cylinder block 10, an oil gallery assembly 20, a plurality of piston cooling nozzles 30, and a control valve 40.

Specifically, the oil passage assembly 20 is provided to the cylinder block 10. The plurality of piston cooling nozzles 30 are respectively arranged on the oil passage assemblies 20, the piston cooling nozzles 30 are communicated with the oil passage assemblies 20 for injecting oil in the oil passage assemblies 20, and the plurality of piston cooling nozzles 30 are opened or closed simultaneously. The control valve 40 is communicated with the oil channel assembly 20, and the control valve 40 controls the synchronous movement of the plurality of piston cooling nozzles 30 by controlling the on-off of a part of the oil channel assembly 20.

In other words, the engine oil gallery system 100 according to the embodiment of the present invention is mainly composed of the cylinder block 10, the oil gallery assembly 20, the plurality of piston cooling nozzles 30, and the control valve 40. As shown in fig. 1 to 3, an oil passage assembly 20 is disposed in the cylinder block 10, and the oil passage assembly 20 has a plurality of oil feeding passages communicated with each other to feed oil to the oil passage system 100 of the engine, and cool and lubricate the engine. As shown in fig. 4, the oil passage assembly 20 is provided with one oil inlet 211 communicating with an oil feed oil passage and a plurality of oil outlets through which oil can be introduced into the oil passage assembly 20 through the oil inlet 211 and be led out to various operating components of the vehicle. A plurality of piston cooling nozzles 30(PCJ) are respectively provided on the oil passage assembly 20, the plurality of piston cooling nozzles 30 are communicated with oil feed passages in the oil passage assembly 20, and the piston cooling nozzles 30 are used for injecting oil in the oil feed passages to cool pistons of the engine. Wherein, a plurality of piston cooling nozzles 30 are arranged on the same oil supply oil path, and the plurality of piston cooling nozzles 30 can be opened or closed simultaneously. The control valve 40(PCJ valve) is in communication with the oil passage of the oil passage assembly 20 in which the piston cooling nozzles 30 are disposed, and is capable of controlling the opening and closing of the part of the oil passage, thereby controlling the plurality of piston cooling nozzles 30 to be synchronously moved.

It should be noted that, when the control valve 40 is used to control all the piston cooling nozzles 30 to move synchronously, the engine operating condition can be fed back according to the engine oil temperature, the engine speed, and the engine load, so as to determine the temperature condition of the piston, and further control whether the piston cooling nozzles 30 need to be opened.

In the present application, the opening and closing of the piston cooling nozzle 30 means that the piston cooling nozzle 30 is in an injection state and in a state where injection is stopped, that is, when the piston cooling nozzle 30 is opened, the piston cooling nozzle 30 is in the injection state, and when the piston cooling nozzle 30 is closed, the piston cooling nozzle 30 is in the state where injection is stopped.

Since the plurality of piston cooling nozzles 30 of the present application are connected to the same oil feed line, and the oil feed line is controlled by one control valve 40 to adjust the simultaneous injection or stop of the injection of the plurality of piston cooling nozzles 30, the injection state and stop state of the injection of the piston cooling nozzles 30 are actually determined by whether there is oil in the oil feed line.

That is, the piston cooling nozzle 30 may be opened when there is oil in the oil feed passage and closed when there is no oil in the oil feed passage, in which case the open state of the piston cooling nozzle 30 corresponds to the injection state and the closed state of the piston cooling nozzle 30 corresponds to the injection stop state.

The piston cooling nozzle 30 may be always in the open state, but when the control valve 40 closes the oil feed line to which the piston cooling nozzle 30 is connected, even if the piston cooling nozzle 30 is in the open state, the oil is not present in the oil line, and therefore the piston cooling nozzle 30 is still in the injection stop state, and in this state, the piston cooling nozzle 30 is still considered to be closed, and only when the oil is present in the oil feed line, the piston cooling nozzle 30 is injected and enters the injection state.

The electronic control unit of the engine oil gallery system 100 according to the embodiment of the present invention can input signals to the control valve 40(PCJ valve) according to parameters such as oil temperature, engine speed, engine load, etc., and after the control valve 40 receives the signals from the electronic control unit, the electronic control unit controls the opening and closing of a part of the oil gallery assembly 20, thereby simultaneously controlling the opening and closing of the plurality of piston cooling nozzles 30.

In other words, a spring does not need to be assembled in the PCJ, the PCJ can be in a normally open state, the PCJ is supplied with oil through a single PCJ oil path, and after the actual working condition of the engine is comprehensively judged by monitoring the rotating speed, the load and the engine oil temperature of the engine, the ECU controls the opening and closing of the PCJ oil path through an input signal to the PCJ valve, so that the opening and closing of the PCJ are controlled.

Therefore, the oil duct system 100 of the engine is provided with the oil duct assembly 20 for arranging the plurality of piston cooling nozzles 30, and the opening and closing of the integral piston cooling nozzles 30 are controlled by arranging the control valve 40, so that interference of other oil supply paths during control of the piston cooling nozzles 30 is avoided, the opening and closing of the piston cooling nozzles 30 are guaranteed not to be affected by the pressure of engine oil, flexible control is realized, the engine can close the piston cooling nozzles 30 under unnecessary working conditions, the discharge capacity of the engine oil pump is reduced, the load of the engine oil pump is reduced, the energy consumption of crankshaft loss is further reduced, and the effect of reducing the oil consumption of the engine is realized.

According to one embodiment of the present invention, the oil passage assembly 20 includes a first main oil passage 21 and a second main oil passage 22.

Specifically, the oil inlet 211 is disposed in the first main oil gallery 21, the second main oil gallery 22 is spaced apart from the first main oil gallery 21, a second oil supply line is disposed in the second main oil gallery 22 and is communicated with the first oil supply line, the control valve 40 and the plurality of piston cooling nozzles 30 are disposed in the second main oil gallery 22 and are communicated with the second oil supply line, and the control valve 40 controls the plurality of piston cooling nozzles 30 to move synchronously by controlling on and off of the second oil supply line.

That is, as shown in fig. 4, the oil passage assembly 20 is mainly composed of the first main oil passage 21 and the second main oil passage 22. A first oil supply passage is provided in the first main oil gallery 21. The first main oil passage 21 may further communicate with a first oil passage 64 and a second oil passage 65, the first oil passage 64 is disposed at the bottom surface of the rod body, the oil inlet 211 is disposed at one end of the first oil passage 64, and the first oil passage 64 is substantially located at the lower side of the gantry structure at the air inlet side of the cylinder block 10, so that the size of the first oil passage 64 is ensured to have sufficient space which can be increased, and the loss along the way is reduced.

The second oil passage 65 is provided at the other end of the first oil passage 64 and extends vertically upward relative to the first oil passage 64, and the other end of the second oil passage 65 communicates with the first main oil passage 21. The first main oil gallery 21, the first oil gallery 64, and the second oil gallery 65 form a first oil feed oil passage, and oil is introduced from an oil inlet 211 of the first oil gallery 64, enters the oil filter-oil cooler oil passage 71 through the first oil gallery 64, and is then introduced into the first main oil gallery 21 through the second oil gallery 65.

The oil flows in the direction of the arrows in fig. 4 and 5, and after the oil passes through the first oil supply path in the first main oil gallery 21, a part of the oil may flow into the main journal for lubrication, a part of the oil may flow into the second main oil gallery 22, and a part of the oil may flow into other branch oil galleries, for example: a first branch oil passage 66, a second branch oil passage 67, and a third branch oil passage 68, and the like. The first branch oil passage 66 is arranged at one end of the first main oil passage 21 far away from the second oil passage 65, and part of the engine oil in the first main oil passage 21 flows into the first branch oil passage 66, flows through the chain tensioner oil groove 72, continues to flow through the second branch oil passage 67, and then enters the engine oil feedback oil path. Another portion of the engine oil of the first main oil gallery 21 may flow into the third branch oil gallery 68 and into the above-cylinder-head oil passage through the third branch oil gallery 68. Of course, those skilled in the art can understand that the number of the branch oil passages may be specifically set as needed, and is not described in detail in this application.

As shown in fig. 4 and 5, the second main oil gallery 22 is transversely arranged in the cylinder block 10 at a distance from the first main oil gallery 21, which is beneficial to enhancing the bending rigidity of the cylinder block 10, reducing the loss along the way, and reducing the pumping loss under the working condition. A second oil supply passage is arranged in the second main oil gallery 22, and the second oil supply passage is communicated with the first oil supply passage. The control valve 40 and the plurality of piston cooling nozzles 30 are arranged on the second main oil gallery 22, the control valve 40 and the plurality of piston cooling nozzles 30 are communicated with the second oil supply oil path, and the control valve 40 controls the plurality of piston cooling nozzles 30 to synchronously move by controlling the on-off of the second main oil gallery 22. In the present application, by providing a control valve 40 and a plurality of piston cooling nozzles 30 on the second main oil gallery 22, the opening and closing of all the piston cooling nozzles 30 can be controlled, which is beneficial to reducing oil injection while facilitating control, thereby achieving the purposes of controlling the displacement of the oil pump, saving oil consumption, and preventing the control valve 40 from interfering with the operation of other oil supply passages when controlling the piston cooling nozzles 30.

In some embodiments of the present invention, a first end of the second oil feeding path is communicated with the first oil feeding path, a second end of the second oil feeding path is closed, the plurality of piston cooling nozzles 30 are provided at the second main oil gallery 22 at intervals in an axial direction of the second oil feeding path, and the control valve 40 is provided at the first end of the second oil feeding path to control the second oil feeding path to be communicated with or disconnected from the first oil feeding path.

In other words, as shown in fig. 4 and 5, the first end of the second oil feed passage communicates with the first oil feed passage, through which oil may be introduced to the second end of the second oil feed passage closed, and the plurality of piston cooling nozzles 30 are arranged on the second main oil gallery 22 at intervals in the axial direction of the second oil feed passage. The control valve 40 is arranged at the first end of the second oil supply path, and the control valve 40 can control the second oil supply path to be communicated or disconnected with the first oil supply path so as to control whether oil in the first main oil path 21 enters the second main oil path 22 or not, thereby realizing the control of the injection time of the piston cooling nozzle 30, ensuring that the piston cooling nozzle 30 can perform optimized injection at the best time, effectively reducing the oil consumption of an engine and saving energy.

According to one embodiment of the invention, the first main oil gallery 21 is arranged in parallel with the second main oil gallery 22, the first end of the first main oil gallery 21 is provided with a first auxiliary oil gallery 61, the first end of the second main oil gallery 22 is provided with a second auxiliary oil gallery 62, the first auxiliary oil gallery 61 is arranged in parallel with the second auxiliary oil gallery 62, an inclined oil gallery 63 is arranged between the first auxiliary oil gallery 61 and the second auxiliary oil gallery 62 and is inclined relative to the first auxiliary oil gallery 61 and the second auxiliary oil gallery 62, and the inclined oil gallery 63 is communicated with the first auxiliary oil gallery 61 and the second auxiliary oil gallery 62 to communicate the first oil feed passage and the second oil feed passage.

That is, referring to fig. 1, 4, and 5, the first main oil gallery 21 is arranged in parallel with and laterally within the cylinder block 10 to facilitate enhancing the bending stiffness of the cylinder block 10. The first end of the first main oil gallery 21 is provided with a first auxiliary oil gallery 61, the first auxiliary oil gallery 61 is coaxial with the first branch oil passage 66, and part of oil in the first main oil gallery 21 can enter the first auxiliary oil gallery 61 and the first branch oil passage 66 respectively. The first end of the second main oil passage 22 is provided with a second sub oil passage 62, and the first sub oil passage 61 is arranged in parallel with the second sub oil passage 62. As shown in fig. 4 to 7, a slant oil passage 63 is provided between the first sub-oil passage 61 and the second sub-oil passage 62, the slant oil passage 63 is arranged obliquely with respect to the first sub-oil passage 61 and the second sub-oil passage 62, and the slant oil passages 63 communicate with the first sub-oil passage 61 and the second sub-oil passage 62, respectively, to introduce part of the oil in the first oil feed oil passage into the second oil feed oil passage.

According to the oil injection control device, the cylinder body 10 is provided with the independent second main oil gallery 22 for injecting oil for the plurality of piston cooling nozzles 30 and the mounting hole for mounting the control valve 40, and meanwhile, the first auxiliary oil gallery 61, the second auxiliary oil gallery 62 and the inclined oil gallery 63 are arranged on the second main oil gallery 22, so that the control valve 40 can control connection or disconnection of the second main oil gallery 22, whether oil in the first main oil gallery 21 enters the second main oil gallery 22 or not is controlled, control over the injection time of the piston cooling nozzles 30 is achieved, the piston cooling nozzles 30 can be guaranteed to be optimally injected at the best time, oil consumption of an engine is effectively reduced, and energy is saved.

In some embodiments of the present invention, the oil passage assembly 20 further includes an oil collection chamber 53 and an oil return passage.

Specifically, the oil collecting chamber 53 is used to collect oil. The oil return passage is communicated with the oil collection chamber 53 so that the oil collected in the oil collection chamber 53 is returned by the oil return passage.

In other words, the oil passage assembly 20 may further include an oil collection chamber 53 and an oil return passage. Wherein, the oil collecting chamber 53 is used for collecting oil. The oil supplied to the lubrication of each part of the vehicle through the first oil supply passage and the second oil supply passage can be collected by the oil collecting chamber 53. The oil return passage is communicated with the oil collection chamber 53, and the oil collected through the oil collection chamber 53 flows back through the oil return passage.

According to an embodiment of the present invention, the oil collecting chamber 53 is provided on the top surface of the cylinder block 10, and the engine oil passage system 100 further includes: the oil return channel 50 is arranged in the cylinder body 10, the oil return channel 50 extends in the vertical direction, and an oil return channel is arranged in the oil return channel 50. The oil return passage 50 includes a first oil return pipe 51 and a second oil return pipe 52.

Specifically, the upper end of the first oil return pipe 51 communicates with the oil collecting chamber 53 of the cylinder 10, the upper end of the second oil return pipe 52 communicates with the lower end of the first oil return pipe 51, the lower end of the second oil return pipe 52 communicates with the bottom surface of the cylinder 10, and the first oil return pipe 51 and the second oil return pipe 52 are matched to penetrate the top surface and the bottom surface of the cylinder 10.

In other words, as shown in fig. 6, the oil collecting chamber 53 is provided on the top surface of the cylinder 10. The oil collecting cavity 53 can be arranged to be an umbrella-shaped structure, which is beneficial to controlling an oil return path, avoiding splashing and reducing energy loss. The engine oil passage system 100 may further include an oil return passage 50, the oil return passage 50 is disposed in the cylinder block 10, and the oil return passage 50 extends in a vertical direction, and an oil return passage is disposed in the oil return passage 50. Referring to fig. 10 and 11, the oil return passage 50 is mainly composed of a first oil return pipe 51 and a second oil return pipe 52. As shown in fig. 8 to 10, the upper end of the first oil return pipe 51 communicates with an oil collecting chamber 53 on the top surface of the cylinder 10, and the oil in the oil collecting chamber 53 is introduced into the oil return passage 50 through the upper end of the first oil return pipe 51. The upper end of the second oil return pipe 52 communicates with the lower end of the first oil return pipe 51. The lower end of the second oil return pipe 52 communicates with the bottom surface of the cylinder 10. The first end of the first oil return pipe 51 is provided in an umbrella structure, and the shape of the oil collecting chamber 53 may be provided in an umbrella structure corresponding to the shape of the first oil return pipe 51. Meanwhile, the first oil return pipe 51 and the second oil return pipe 52 penetrate through the top surface and the bottom surface of the cylinder block 10, thereby effectively enhancing the bending and torsional rigidity of the cylinder block 10.

Alternatively, as shown in fig. 11 and 12, the first oil return pipe 51 and the second oil return pipe 52 are respectively tapered, the size of the lower end of the first oil return pipe 51 is smaller than that of the upper end, and the size of the upper end of the second oil return pipe 52 is smaller than that of the lower end. The lower end of the first oil return pipe 51 has a first mating surface, the first mating surface 511 has a first protrusion 512 protruding downward, and the lower surface of the first protrusion 512 is a second mating surface. The upper end of the second oil return pipe 52 has a third mating surface 521, the third mating surface is provided with a second protrusion 522 protruding upward, and the upper surface of the second protrusion 522 is a fourth mating surface. The first mating surface 511 and the fourth mating surface abut against each other, and the second mating surface and the third mating surface 521 abut against each other.

In the application, the height of the oil return pipe is about 280mm, the length of the one-way core pulling is too long, and the die casting process cannot be realized. Therefore, the oil return passage 50 is formed by demolding the upper insert pin and the lower insert pin along the top surface and the bottom surface. Specifically, the die insert pin of the first oil return pipe 51 is ejected from the top surface of the cylinder 10, and the die insert pin of the second oil return pipe 52 is ejected from the bottom surface of the cylinder 10. When the mold is closed, the first mating surface 511 and the fourth mating surface of the insert pin contact region 54 of the first oil return pipe 51 and the second oil return pipe 52 are in contact with each other, and the second mating surface and the third mating surface 521 are in contact with each other. The contact area 54 between the insert pin of the first oil return pipe 51 and the insert pin of the second oil return pipe 52 is not plane contact, but two planes plus a step surface contact (see fig. 11 and 12), similar to a "Z" profile contact or a conical surface contact, which can ensure that the minimum oil return area of the whole oil return passage 50 is greater than or equal to the design requirement.

In summary, according to the oil passage system 100 of the engine of the embodiment of the invention, the control valve 40 is provided to control the plurality of piston cooling nozzles 30, so that the control is facilitated, and the reduction of oil injection is facilitated, thereby achieving the purposes of controlling the displacement of the oil pump and saving oil consumption. The oil passage system 100 of the engine of the present invention is provided with an oil supply passage for separately providing a plurality of piston cooling nozzles 30, and controls the opening and closing of the entire piston cooling nozzles 30 by providing a control valve 40 to prevent interference with the operation of other oil supply passages when controlling the piston cooling nozzles 30.

In a second aspect of the present invention, there is provided a control method of an engine oil gallery system 100, including the steps of:

s1, acquiring the oil temperature, the engine speed and the engine load in the oil passage component 20;

s2, judging whether the oil temperature, the engine speed and the engine load in the oil passage component 20 meet a first condition or a second condition;

s3, the control valve 40 controls a portion of the oil gallery assembly to be opened to close the piston cooling nozzle 30 in a case where the oil temperature, the engine speed, and the engine load in the oil gallery assembly 20 meet the first or second condition, and the control valve 40 controls a portion of the oil gallery assembly to be opened to open the piston cooling nozzle 30 in a case where the oil temperature, the engine speed, and the engine load in the oil gallery assembly 20 do not meet the first or second condition.

Optionally, the first condition is:

the temperature of the oil in the oil passage assembly 20 is lower than a first set value, the engine speed is in a first threshold interval, and the engine load is in a second threshold interval.

The second condition is that:

the temperature of the oil in the oil passage assembly 20 is higher than the first set value, the engine speed is in the third threshold interval, and the engine load is in the fourth threshold interval.

Specifically, in the method for controlling the oil gallery system 100 of the engine according to the present invention, an Electronic Control Unit (ECU) is electrically connected to the Control valve 40, and the Electronic Control Unit is capable of detecting parameters such as the oil temperature in the oil gallery assembly 20, the engine speed, and the engine load. Then, whether the oil temperature, the engine speed, and the engine load in the oil passage assembly 20 meet the first condition or the second condition is determined by the electronic control unit. In the case where the oil temperature, the engine speed, and the engine load in the gallery assembly 20 meet the first or second condition, the ecu controls the control valve 40 to close the piston cooling nozzle 30. In the event that the oil temperature, the engine speed, and the engine load within the gallery assembly 20 do not meet the first or second conditions, the electronic control unit controls the control valve 40 to open the piston cooling nozzle 30.

Under the first condition, the temperature of oil in the oil gallery assembly 20 is lower than a first set value (for example, 50 ℃), the engine speed is in a first threshold interval (for example, 1000rpm-6600rpm), and the engine load is in a second threshold interval (for example, less than 30 N.m). Under the second condition, the temperature of the oil in the oil gallery assembly 20 is higher than a first set value (for example, 50 ℃), the engine speed is in a third threshold interval (for example, 1000rpm-3000rpm), and the engine load is in a fourth threshold interval (for example, 30N.m-100 N.m).

When the vehicle runs, the electronic control unit of the vehicle can control the opening or closing of the control valve 40 according to the actual running working condition, and further controls the opening or closing time of the piston cooling nozzle 30 through the control valve 40, so that the piston cooling nozzle 30 can spray at the best time, the oil consumption of the engine is effectively reduced, and the energy is saved.

This application is through setting up a control valve 40 to this control valve 40 controls a plurality of piston cooling nozzle 30 according to the fluid temperature that the electronic control unit detected, engine speed and engine load isoparametric, disturbs other oil feed circuit work when preventing to control piston cooling nozzle 30, is favorable to reducing the oil spout, thereby reaches the purpose of controlling the oil pump discharge capacity, fuel economy.

In the control principle of the control valve 40 of the present application, the piston cooling nozzle 30 needs to perform a function of injecting oil to the bottom of the piston to cool the piston when the piston temperature is high. The piston is low in temperature when the rotating speed is low, the load is low, and the engine oil temperature is low, so that the piston needs to be quickly warmed up instead of being cooled by the piston cooling nozzle 30, the temperature condition of the piston is judged by feeding back the engine operating condition through monitoring the engine oil temperature, the engine rotating speed and the engine load, and whether the piston cooling nozzle 30 needs to be opened or not is further controlled.

Specifically, when the engine oil temperature is below 50 ℃, the piston cooling nozzle 30 remains closed over the range of engine speeds from 1000rpm to 6600rpm and under a load of about 30 n.m., since the piston does not need to be cooled under such conditions.

When the engine oil temperature is higher than 50 ℃, the PCJ remains closed in the speed range of 1000rpm to 3000rpm of the engine and in the load range of about 30n.m to 100n.m, because the piston does not need to be cooled in such conditions.

The piston cooling nozzle 30 remains open for other engine speed, load ranges because the piston needs to be cooled during such conditions.

The electronic control unit inputs a signal to the control valve 40(PCJ valve) to control the opening and closing of the second main oil gallery 22, and thus the opening and closing of the piston cooling nozzle 30, by the above control principle. The opening and closing of the piston cooling nozzle 30 are not affected by the engine oil pressure any more, the control can be flexibly realized, the engine can close the piston cooling nozzle 30 under unnecessary working conditions, the oil pump discharge capacity is reduced, the oil pump load is reduced, the energy consumption of crankshaft loss is further reduced, and the oil consumption of the engine is reduced.

Therefore, in the method for controlling the oil gallery system 100 of the engine according to the present invention, the electronic control unit can input signals to the control valve 40(PCJ valve) according to parameters such as oil temperature, engine speed, and engine load to control the opening and closing of the second main oil gallery 22, and thus the opening and closing of the piston cooling nozzle 30. The opening and closing of the piston cooling nozzle 30 are not influenced by the pressure of engine oil any more, the control can be flexible, the engine can close the piston cooling nozzle 30 under an unnecessary working condition, the discharge capacity of an oil pump is reduced, the load of the oil pump is reduced, the energy consumption of crankshaft loss is further reduced, and the oil consumption of the engine is reduced.

In a third aspect of the present application, a vehicle is provided that includes the engine oil gallery system 100 in the above embodiment. Since the engine oil gallery system 100 according to the embodiment of the present invention has the above technical effects, the vehicle according to the embodiment of the present invention should also have corresponding technical effects, that is, by using the engine oil gallery system 100, the vehicle of the present invention can control the opening and closing of the integral piston cooling nozzle 30 by providing one control valve 40, so as to prevent interference with the operation of other oil feed passages when controlling the piston cooling nozzle 30. The optimized control of the piston cooling nozzle 30 is ensured, and the oil consumption of the engine is effectively reduced. Meanwhile, the electronic control unit can input signals to the control valve 40 according to parameters such as oil temperature, engine speed, engine load and the like to control the opening and closing of the second main oil gallery 22 and further control the opening and closing of the piston cooling nozzle 30. The opening and closing of the piston cooling nozzle 30 are not affected by the engine oil pressure any more, the control can be flexibly realized, the engine can close the piston cooling nozzle 30 under unnecessary working conditions, the oil pump discharge capacity is reduced, the oil pump load is reduced, the energy consumption of crankshaft loss is further reduced, and the oil consumption of the engine is reduced.

Of course, other structures of the vehicle according to the embodiment of the present invention can be understood and implemented by those skilled in the art, and are not described in detail in this application.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. An engine oil gallery system, comprising:

a cylinder body;

the oil duct assembly is arranged on the cylinder body;

the piston cooling nozzles are respectively arranged on the oil duct assembly, are communicated with the oil duct assembly and are used for spraying oil in the oil duct assembly, and are opened or closed simultaneously;

the control valve is communicated with the oil duct assembly and controls the synchronous movement of the piston cooling nozzles by controlling the on-off of one part of the oil duct assembly.

2. The engine oil gallery system of claim 1, wherein the oil gallery assembly includes:

the first main oil duct is internally provided with a first oil supply oil way;

the second main oil gallery is arranged at a distance from the first main oil gallery, the second main oil gallery is internally provided with the second oil supply oil way, the second oil supply oil way is communicated with the first oil supply oil way, the control valve and the plurality of piston cooling nozzles are arranged in the second main oil gallery and are communicated with the second oil supply oil way, and the control valve controls the plurality of piston cooling nozzles to synchronously move by controlling the on-off of the second oil supply oil way.

3. The engine oil passage system according to claim 2, wherein a first end of the second oil feed oil passage is communicated with the first oil feed oil passage, a second end of the second oil feed oil passage is closed, a plurality of the piston cooling nozzles are arranged at the second main oil passage at intervals in an axial direction of the second oil feed oil passage, and the control valve is arranged at the first end of the second oil feed oil passage to control the second oil feed oil passage to be communicated with or disconnected from the first oil feed oil passage.

4. The engine gallery system of claim 2, wherein the first main gallery is disposed in parallel with the second main gallery, a first end of the first main gallery is provided with a first auxiliary gallery, a first end of the second main gallery is provided with a second auxiliary gallery, the first auxiliary gallery is disposed in parallel with the second auxiliary gallery,

an inclined oil passage which is inclined relative to the first auxiliary oil passage and the second auxiliary oil passage is arranged between the first auxiliary oil passage and the second auxiliary oil passage, and the inclined oil passage is communicated with the first auxiliary oil passage and the second auxiliary oil passage to communicate the first oil feeding oil passage and the second oil feeding oil passage.

5. The engine oil gallery system of claim 1, wherein the oil gallery assembly further comprises:

the oil collecting cavity is used for collecting oil;

and the oil return oil way is communicated with the oil collecting cavity so that the oil collected by the oil collecting cavity flows back through the oil return oil way.

6. The engine oil gallery system of claim 5, further comprising: the oil return way is arranged on the cylinder body and extends along the vertical direction, and the oil return way is internally provided with the oil return way.

7. The engine oil gallery system according to claim 6, wherein the oil collection chamber is provided on a top surface of the cylinder block, and the oil return passage includes:

the upper end of the first oil return pipe is communicated with the oil collecting cavity;

the upper end of the second oil return pipe is communicated with the lower end of the first oil return pipe, the lower end of the second oil return pipe is communicated with the bottom surface of the cylinder body, and the first oil return pipe is matched with the second oil return pipe to penetrate through the top surface and the bottom surface of the cylinder body.

8. The engine oil gallery system according to claim 7, wherein the first oil return pipe and the second oil return pipe are respectively conical pieces, the lower end of the first oil return pipe is provided with a first matching surface, the first matching surface is provided with a first protruding portion protruding downwards, and the lower surface of the first protruding portion is a second matching surface; the upper end of the second oil return pipe is provided with a third matching surface, the third matching surface is provided with a second bulge part protruding upwards, the upper surface of the second bulge part is a fourth matching surface,

the first matching surface and the fourth matching surface are mutually abutted, and the second matching surface and the third matching surface are mutually abutted.

9. The control method of the engine oil gallery system according to any one of claims 1 to 8, comprising the steps of:

s2, judging whether the oil temperature, the engine speed and the engine load in the oil passage component meet a first condition or a second condition;

10. The method of claim 9, wherein the first condition is:

the second condition is:

11. A vehicle characterized by comprising the engine oil gallery system according to any one of claims 1 to 8.