CN114991927B - Engine oil duct system, control method and vehicle - Google Patents

Abstract

The application discloses an engine oil duct system, a control method and a vehicle, wherein the engine oil duct system comprises: a cylinder; the oil duct component is arranged on the cylinder body; the plurality of 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 simultaneously opened or simultaneously closed; and the control valve is communicated with the oil duct component and controls the synchronous movement of the plurality of piston cooling nozzles by controlling the on-off of a part of the oil duct component. According to the engine oil duct system, the plurality of piston cooling nozzles are arranged on the oil duct component, and the on-off of a part of the oil duct component is controlled through the control valve, so that the opening and the closing of the plurality of piston cooling nozzles are controlled simultaneously, and the control valve is prevented from interfering with the operation of other oil supply paths when controlling the plurality of piston cooling nozzles.

Description

Engine oil duct system, control method and vehicle

Technical Field

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

Background

When the vehicle starts, the engine works, and oil feeding and oil returning are carried out on each operation part through the engine oil duct system so as to lubricate or cool each operation part.

Multiple piston cooling nozzles (PCJ) in existing engine oil gallery systems need to be controlled individually by different control valves, resulting in more branch oil passages in the overall engine oil gallery system.

Disclosure of Invention

The application aims to provide an engine oil duct system, a control method and a new technical scheme of a vehicle, which at least can solve the problem that in the prior art, branch oil ways in the engine oil duct system are more 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 passage system including: a cylinder; the oil duct component 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 simultaneously opened or simultaneously closed; and the control valve is communicated with the oil duct assembly, and the control valve controls the synchronous movement of a plurality of piston cooling nozzles by controlling the on-off of a part of the oil duct assembly.

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

Further, the first end of the second oil supply path is communicated with the first oil supply path, the second end of the second oil supply path is closed, a plurality of piston cooling nozzles are arranged on the second main oil path 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 is parallel to the second main oil duct, a first auxiliary oil duct is arranged at a first end of the first main oil duct, a second auxiliary oil duct is arranged at a second end of the second main oil duct, the first auxiliary oil duct is parallel to the second auxiliary oil duct, 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 be communicated with the first oil supply oil duct and the second oil supply oil duct.

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 passage system further includes: the oil return channel is arranged on the cylinder body in a vertical direction, and the oil return channel is internally provided with the oil return oil 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 so as to penetrate through the top surface and the bottom surface of the cylinder body.

Further, the first oil return pipe and the second oil return pipe are conical parts respectively, a first matching surface is arranged at the lower end of the first oil return pipe, a first protruding part protruding downwards is arranged on the first matching surface, and the lower surface of the first protruding part 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 protruding part protruding upwards, the upper surface of the second protruding 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.

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

S1, acquiring oil temperature, engine speed and engine load in an oil duct component;

S2, judging whether the oil temperature, the engine speed and the engine load in the oil duct component meet a first condition or a second condition;

And S3, under the condition that the oil temperature, the engine rotating 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 rotating 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 communicated to open the piston cooling nozzle.

Further, the first condition is:

The oil temperature in the oil duct component 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:

The oil temperature in the oil duct component is higher than a first set value, the engine speed is in a third threshold interval, and the engine load 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 duct system provided by the embodiment of the invention, the plurality of piston cooling nozzles are arranged on the oil duct component, and the on-off of a part of the oil duct component is controlled by the control valve, so that the opening and the closing of the plurality of piston cooling nozzles are controlled simultaneously, and the control valve is prevented from interfering with the work of other oil supply ways when controlling the plurality of piston cooling nozzles.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.

Drawings

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

Fig. 1 is a schematic view of a structure 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 diagram of the engine oil gallery system of an embodiment of the present invention;

Fig. 5 is a schematic structural view of a second oil passage component of the engine oil passage system of the embodiment of the present invention;

Fig. 6 is another side view of the cylinder block of the embodiment of the 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 the 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 view of an oil return passage according to an embodiment of the present invention;

FIG. 11 is a side view of an oil return passage according to an embodiment of the present invention;

Fig. 12 is an enlarged view of a portion of the contact area of the insert pin according to an embodiment of the present invention.

Reference numerals:

an engine oil gallery system 100;

A cylinder 10;

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

A piston cooling nozzle 30;

A control valve 40;

An oil return passage 50; a first oil return pipe 51; a first mating surface 511; a first boss 512; a second oil return pipe 52; a third mating surface 521; a second boss 522; an oil collecting chamber 53; a needle-setting contact area 54;

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

An 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, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

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

Techniques, methods, and apparatus known to one 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 specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The present application was created by the inventors of the present application based on the following facts.

The existing PCJ is usually controlled to be opened and closed by a separate mechanical control structure, namely, the opening and closing of the PCJ are realized through the mechanical movement of an internal spring of the PCJ, the opening and closing of the PCJ are only influenced by oil pressure, and under unnecessary working conditions (such as when an engine is started, a low-rotation-speed working condition, a low-load working condition and the like), the PCJ can be opened due to the fact that the internal spring of the PCJ senses the oil pressure, so that the displacement of an oil pump is larger under the working conditions, the load of the oil pump is increased, the oil pump is driven by a crankshaft through a chain system, the larger the load of the oil pump is, the higher the energy consumption of the output loss of the crankshaft is, and the higher the oil consumption of the engine is.

Based on this, the inventors of the present application have made the following inventive creation through long-term studies and experiments.

An engine oil passage system 100 according to an embodiment of the present invention is specifically described below with reference to the 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 provided to the oil passage assembly 20, the piston cooling nozzles 30 communicate with the oil passage assembly 20 for injecting oil in the oil passage assembly 20, and the plurality of piston cooling nozzles 30 are simultaneously opened or simultaneously closed. The control valve 40 communicates with the oil passage 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 portion of the oil passage assembly 20.

In other words, the engine oil passage system 100 according to the embodiment of the present invention is mainly composed of the cylinder block 10, the oil passage assembly 20, the plurality of piston cooling nozzles 30, and the control valve 40. As shown in fig. 1 to 3, the oil passage assembly 20 is provided in the cylinder block 10, and the oil passage assembly 20 has a plurality of oil supply passages communicating with each other to supply oil to the engine oil passage system 100 for cooling and lubricating the engine. As shown in fig. 4, the oil passage assembly 20 is provided with one oil inlet 211 and a plurality of oil outlets communicating with the oil feed passage, and oil may be introduced into the oil passage assembly 20 through the oil inlet 211 and guided out to the respective running parts of the vehicle through the plurality of oil outlets. A plurality of piston cooling nozzles 30 (PCJ) are respectively provided on the oil passage assembly 20, the plurality of piston cooling nozzles 30 being in communication with an oil feed passage in the oil passage assembly 20, the piston cooling nozzles 30 being for injecting oil in the oil feed passage to cool pistons of the engine. Wherein, a plurality of piston cooling nozzles 30 are arranged on the same oil supply path, and a plurality of piston cooling nozzles 30 can be opened or closed at the same time. The control valve 40 (PCJ valve) communicates with an oil passage provided with the piston cooling nozzles 30 on the oil passage assembly 20, and can control on-off of the portion of the oil passage, thereby controlling synchronous movement of the plurality of piston cooling nozzles 30.

It should be noted that, when all the piston cooling nozzles 30 are controlled to be synchronously active by one control valve 40, the engine operation condition may 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 addition, 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 of stopping injection, that is, the piston cooling nozzle 30 is in an injection state when the piston cooling nozzle 30 is opened, and the piston cooling nozzle 30 is in a state of stopping injection when the piston cooling nozzle 30 is closed.

Since the plurality of piston cooling nozzles 30 of the present application are communicated with the same oil feed path, and the on-off of the oil feed path is controlled by a control valve 40 to adjust the simultaneous oil injection or the stop of the oil injection of the plurality of piston cooling nozzles 30, the injection state and the stop state of the piston cooling nozzles 30 are actually determined by whether or not oil is present in the oil feed path.

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 stop injection state.

The piston cooling nozzle 30 may be in an open state at all times, but even if the piston cooling nozzle 30 is in an open state when the control valve 40 closes the oil supply passage to which the piston cooling nozzle 30 is connected, the piston cooling nozzle 30 is still in a stopped state because there is no oil in the oil passage, and in this state, the piston cooling nozzle 30 is still considered to be closed, and the piston cooling nozzle 30 is injected only when there is oil in the oil supply passage, and the injection state is entered.

The electronic control unit of the engine oil duct 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 sent by the electronic control unit, it controls the opening and closing of a part of the oil duct assembly 20, and further simultaneously controls the opening and closing of the plurality of piston cooling nozzles 30.

In other words, the PCJ of the application does not need to be provided with a spring, the PCJ can be in a normal state, the PCJ is supplied with oil by designing an independent PCJ oil passage, and the ECU controls the opening and closing of the PCJ oil passage by monitoring the rotation speed, the load and the engine oil temperature of the engine to comprehensively judge the actual working condition of the engine and then controlling the opening and closing of the PCJ by inputting signals to the PCJ valve.

Therefore, the engine oil duct system 100 of the present invention is provided with the oil duct assembly 20 for setting a plurality of piston cooling nozzles 30, and controls the opening and closing of the whole piston cooling nozzles 30 by setting a control valve 40, so as to prevent the interference of other oil supply paths when controlling the piston cooling nozzles 30, ensure that the opening and closing of the piston cooling nozzles 30 are not affected by the engine oil pressure any more, and can be flexibly controlled, and the engine can close the piston cooling nozzles 30 when not in necessary working conditions, thereby reducing the engine oil pump displacement, reducing the engine oil pump load, further reducing the energy consumption of crankshaft loss, and realizing the effect of engine oil consumption reduction.

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

Specifically, the oil inlet 211 is disposed in the first main oil duct 21, the second main oil duct 22 is disposed at a distance from the first main oil duct 21, a second oil feeding path is disposed in the second main oil duct 22, the second oil feeding path is communicated with the first oil feeding path, the control valve 40 and the plurality of piston cooling nozzles 30 are disposed in the second main oil duct 22 and are communicated with the second oil feeding path, and the control valve 40 controls the on-off of the second oil feeding path to control the plurality of piston cooling nozzles 30 to synchronously move.

That is, as shown in fig. 4, the oil passage assembly 20 is mainly composed of a first main oil passage 21 and a second main oil passage 22. Wherein a first oil feed passage is provided in the first main oil passage 21. The first main oil duct 21 may further be communicated with a first oil duct 64 and a second oil duct 65, the first oil duct 64 is disposed on the bottom surface of the rod body, the oil inlet 211 is disposed at one end of the first oil duct 64, and the first oil duct 64 is located at the lower side of the gantry structure on the air inlet side of the cylinder body 10, so that the size of the first oil duct 64 is ensured to have sufficient and enlarged space, and the loss along the journey is reduced.

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

As shown by the arrow direction in fig. 4 and 5, after the oil passes through the first oil supply passage in the first main oil passage 21, a part of the oil may flow into the main journal for lubrication, a part may flow into the second main oil passage 22, and a part may flow into other branch oil passages, for example: a first branch oil passage 66, a second branch oil passage 67, a third branch oil passage 68, and the like. The first branch oil passage 66 is disposed at an end of the first main oil passage 21 away from the second oil passage 65, and a portion of the engine oil in the first main oil passage 21 flows into the first branch oil passage 66 and flows into the chain tensioner oil groove 72, and continues to flow through the second branch oil passage 67 and then enters the engine oil pump feedback oil passage. Another portion of the engine oil of first main oil passage 21 may flow into third branch oil passage 68 and flow into the above-head oil passage through third branch oil passage 68. Of course, those skilled in the art can understand that the number of the branch oil channels may be actually set, and detailed description thereof is omitted in the present application.

As shown in fig. 4 and 5, the second main oil gallery 22 is arranged in the cylinder 10 at a distance from the first main oil gallery 21, which is beneficial to enhancing the bending rigidity of the cylinder 10 and reducing the loss of oil pumping under working conditions. A second oil feed passage is provided in the second main oil passage 22, and communicates with the first oil feed passage. The control valve 40 and the plurality of piston cooling nozzles 30 are provided on the second main oil passage 22, and the control valve 40 and the plurality of piston cooling nozzles 30 are communicated with the second oil feed passage, whereby the control valve 40 controls the synchronous movement of the plurality of piston cooling nozzles 30 by controlling the on-off of the second main oil passage 22. In the application, by arranging the control valve 40 and the plurality of piston cooling nozzles 30 on the second main oil duct 22, the opening and closing of all the piston cooling nozzles 30 can be controlled, the control is convenient, and the oil injection is reduced, so that the purposes of controlling the oil pump displacement and saving the oil consumption are achieved, and the control valve 40 is prevented from interfering with the work of other oil supply paths when controlling the piston cooling nozzles 30.

In some embodiments of the present invention, the first end of the second oil feed passage is in communication with the first oil feed passage, the second end of the second oil feed passage is closed, a plurality of piston cooling nozzles 30 are provided at spaced apart positions along the axial direction of the second oil feed passage in the second main oil passage 22, and a control valve 40 is provided at the first end of the second oil feed passage to control the second oil feed passage to communicate with or to disconnect from the first oil feed passage.

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, and the oil may be introduced into the second oil feed passage through the first oil feed passage to be closed at the second end thereof, and the plurality of piston cooling nozzles 30 are arranged on the second main oil passage 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 oil path, and the control valve 40 can control the second oil supply oil path to be communicated with or disconnected from the first oil supply oil path so as to control whether the oil in the first main oil path 21 enters the second main oil path 22, thereby realizing the control of the injection time of the piston cooling nozzle 30, ensuring that the piston cooling nozzle 30 can optimally inject at the optimal time, effectively reducing the oil consumption of the engine and saving energy.

According to one embodiment of the invention, the first main oil passage 21 is arranged in parallel with the second main oil passage 22, the first end of the first main oil passage 21 is provided with a first auxiliary oil passage 61, the first end of the second main oil passage 22 is provided with a second auxiliary oil passage 62, the first auxiliary oil passage 61 is arranged in parallel with the second auxiliary oil passage 62, an inclined oil passage 63 which is arranged obliquely with respect to the first auxiliary oil passage 61 and the second auxiliary oil passage 62 is arranged between the first auxiliary oil passage 61 and the second auxiliary oil passage 62, and the inclined oil passage 63 communicates with the first auxiliary oil passage 61 and the second auxiliary oil passage 62 to communicate the first oil supply passage and the second oil supply passage.

That is, referring to fig. 1,4 and 5, the first main oil gallery 21 is arranged in parallel with the second main oil gallery 22 and laterally within the cylinder block 10, which is advantageous in enhancing the bending rigidity of the cylinder block 10. The first end of the first main oil passage 21 is provided with a first auxiliary oil passage 61, the first auxiliary oil passage 61 is coaxial with the first branch oil passage 66, and part of the oil in the first main oil passage 21 may enter the first auxiliary oil passage 61 and the first branch oil passage 66, respectively. The first end of the second main oil passage 22 is provided with a second auxiliary oil passage 62, and the first auxiliary oil passage 61 is disposed in parallel with the second auxiliary oil passage 62. As shown in fig. 4 to 7, an inclined oil passage 63 is provided between the first sub oil passage 61 and the second sub oil passage 62, the inclined oil passage 63 is arranged obliquely with respect to the first sub oil passage 61 and the second sub oil passage 62, and the inclined oil passage 63 communicates 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 passage into the second oil feed passage.

According to the application, by designing the second main oil duct 22 for injecting oil for the plurality of piston cooling nozzles 30 and the mounting hole for mounting the control valve 40 on the cylinder body 10, and simultaneously arranging the first auxiliary oil duct 61, the second auxiliary oil duct 62 and the inclined oil duct 63 on the second main oil duct 22, the control valve 40 is convenient to control the connection or disconnection of the second main oil duct 22, so that whether the oil in the first main oil duct 21 enters the second main oil duct 22 is controlled, the control of the injection time of the piston cooling nozzles 30 is realized, the optimal injection of the piston cooling nozzles 30 can be ensured at the optimal time, the engine oil consumption is effectively reduced, and the energy is saved.

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

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

In other words, the oil gallery assembly 20 may also include an oil collecting chamber 53 and an oil return passage. Wherein the oil collecting chamber 53 is used for collecting oil. The oil fed to the respective parts of the vehicle for lubrication through the first oil feed passage and the second oil feed passage can be collected through the oil collecting chamber 53. The oil return oil way is communicated with the oil collecting cavity 53, and the oil collected through the oil collecting cavity 53 flows back through the oil return oil way.

According to an embodiment of the present invention, the oil collecting chamber 53 is provided at the top surface of the cylinder block 10, and the engine oil passage system 100 further includes: the oil return channel 50, the oil return channel 50 is arranged on the cylinder body 10 along the vertical direction extension, 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 block 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 block 10, and the first oil return pipe 51 and the second oil return pipe 52 cooperate to penetrate the top and bottom surfaces of the cylinder block 10.

In other words, as shown in fig. 6, the oil collecting chamber 53 is provided at the top surface of the cylinder block 10. The oil collecting cavity 53 can be arranged in 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 being provided in the cylinder block 10, and the oil return passage 50 extending in a vertical direction, an oil return passage being provided 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 is communicated with the oil collecting cavity 53 on the top surface of the cylinder 10, and the oil in the oil collecting cavity 53 is guided into the oil return channel 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-like structure, and the oil collecting chamber 53 may be provided in an umbrella-like 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 and bottom surfaces of the cylinder block 10, 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 tapered members, respectively, the lower end of the first oil return pipe 51 has a smaller size than the upper end, and the upper end of the second oil return pipe 52 has a smaller size than the lower end. The lower end of the first oil return pipe 51 has a first mating surface, the first mating surface 511 is provided with a first protruding portion 512 protruding downward, and the lower surface of the first protruding portion 512 is a second mating surface. The upper end of the second oil return pipe 52 has a third mating surface 521 provided with a second protruding portion 522 protruding upward, and the upper surface of the second protruding portion 522 is a fourth mating surface. The first mating surface 511 and the fourth mating surface are abutted against each other, and the second mating surface and the third mating surface 521 are abutted against each other.

In the application, the height of the oil return pipe is about 280mm, the unidirectional core-pulling length is too long, and the die casting process cannot be realized. Thus, the oil return passage 50 is formed by demolding the upper and lower insert pins along the top and bottom surfaces. Specifically, the insert pin of the first oil return pipe 51 is ejected from the top surface direction of the cylinder 10, and the insert pin of the second oil return pipe 52 is ejected from the bottom surface direction 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 insert pin of the first oil return pipe 51 and the insert pin contact area 54 of the second oil return pipe 52 are not plane contacts, but two planes are added with a step surface contact (see fig. 11 and 12), and the minimum oil return area of the whole oil return passage 50 can be ensured to be more than or equal to the design requirement like a 'Z' -shaped surface contact or a conical surface contact.

In summary, according to the engine oil gallery system 100 of the embodiment of the present invention, the control valve 40 is provided to control the plurality of piston cooling nozzles 30, which is convenient for controlling and is beneficial for reducing oil injection, so as to achieve the purposes of controlling the displacement of the oil pump and saving oil consumption. The engine oil passage system 100 of the present invention is provided with an oil supply passage for providing a plurality of piston cooling nozzles 30 alone, and controls the opening and closing of the entire piston cooling nozzle 30 by providing a control valve 40 to prevent interference with the operation of other oil supply passages when controlling the piston cooling nozzle 30.

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

S1, acquiring the oil temperature, the engine speed and the engine load in the oil duct assembly 20;

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

S3, in the case where the oil temperature, the engine speed, and the engine load in the oil passage assembly 20 meet the first condition or the second condition, the control valve 40 controls a portion of the oil passage assembly to be opened to close the piston cooling nozzle 30, and in the case where the oil temperature, the engine speed, and the engine load in the oil passage assembly 20 do not meet the first condition or the second condition, the control valve 40 controls a portion of the oil passage assembly to be communicated to open the piston cooling nozzle 30.

Optionally, the first condition is:

The oil temperature in the oil gallery assembly 20 is below a first set point, the engine speed is in a first threshold interval, and the engine load is in a second threshold interval.

The second condition is:

The oil temperature in the oil gallery assembly 20 is higher than the first set point, the engine speed is in the third threshold interval, and the engine load is in the fourth threshold interval.

Specifically, in the control method of the engine oil gallery system 100 of the present invention, an electronic control unit (ECU: electronic Control Unit) is electrically connected to the control valve 40, and the electronic control unit is capable of detecting parameters such as oil temperature, engine speed, and engine load in the oil gallery assembly 20. Then, it is judged by the electronic control unit 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. The electronic control unit controls the control valve 40 to close the piston cooling nozzle 30 in the case where the oil temperature, the engine speed, and the engine load in the oil passage assembly 20 meet the first condition or the second condition. In the event that the oil temperature, engine speed, and engine load within the oil 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.

Wherein, under the first condition, the oil temperature in the oil gallery assembly 20 is lower than a first set point (e.g., 50 ℃), the engine speed is in a first threshold interval (e.g., 1000rpm-6600 rpm), and the engine load is in a second threshold interval (e.g., less than 30 N.m). Under the second condition, the oil temperature in the oil gallery assembly 20 is higher than the first set point (e.g., 50 ℃), the engine speed is in a third threshold interval (e.g., 1000rpm-3000 rpm), and the engine load is in a fourth threshold interval (e.g., 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 condition, and further control 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 optimal time, the engine oil consumption is effectively reduced, and the energy is saved.

According to the application, the control valve 40 is arranged, and the control valve 40 controls the plurality of piston cooling nozzles 30 according to the parameters of oil temperature, engine speed, engine load and the like detected by the electronic control unit, so that the interference of other oil supply ways in the process of controlling the piston cooling nozzles 30 is prevented, the oil injection is favorably reduced, and the purposes of controlling the oil pump displacement and saving the oil consumption are achieved.

In the control principle of the control valve 40 of the present application, the piston cooling nozzle 30 needs to realize a function of injecting oil to the bottom of the piston to cool the piston when the piston temperature is high. The temperature of the piston is low at low rotation speed, low load and low engine oil temperature, but rapid warm-up is needed instead, and the cooling of the piston cooling nozzle 30 is not needed, so the engine operation condition is fed back to judge the temperature condition of the piston by monitoring the engine oil temperature, the engine rotation speed and the engine load, and then whether the piston cooling nozzle 30 needs to be opened is controlled.

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

When the oil temperature is above 50 ℃, the PCJ remains closed in the engine speed range of 1000rpm to 3000rpm and in the load range of about 30n.m to 100n.m, as the pistons do not need to be cooled under such conditions.

The piston cooling nozzle 30 remains open for other engine speeds and load ranges because the piston requires cooling during such conditions.

The electronic control unit controls the opening and closing of the second main oil gallery 22 by inputting a signal to the control valve 40 (PCJ valve) through the above control principle, thereby controlling the opening and closing of the piston cooling nozzle 30. The opening and closing of the piston cooling nozzle 30 is not influenced by the engine oil pressure any more, the piston cooling nozzle 30 can be flexibly controlled, the engine can be closed under unnecessary working conditions, the discharge capacity of an 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.

Therefore, in the control method of the engine oil gallery system 100 of the present invention, the electronic control unit can control the opening and closing of the second main oil gallery 22 according to the input signals of parameters such as the oil temperature, the engine speed, and the engine load to the control valve 40 (PCJ valve), thereby controlling the opening and closing of the piston cooling nozzle 30. The opening and closing of the piston cooling nozzle 30 is not influenced by the engine oil pressure any more, the piston cooling nozzle 30 can be flexibly controlled, the engine can be closed under unnecessary working conditions, the discharge capacity of an 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.

In a third aspect of the present application, a vehicle is provided that includes the engine oil passage system 100 in the above-described embodiment. Since the engine oil passage system 100 according to the embodiment of the present application has the above-described technical effects, the vehicle according to the embodiment of the present application should also have the corresponding technical effects in that by adopting the engine oil passage system 100, the vehicle of the present application can control the opening and closing of the entire piston cooling nozzle 30 by providing one control valve 40, so as to prevent interference with other oil feed passage operations when controlling the piston cooling nozzle 30. The optimal control of the piston cooling nozzle 30 is ensured, effectively reducing engine fuel consumption. 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 is not influenced by the engine oil pressure any more, the piston cooling nozzle 30 can be flexibly controlled, the engine can be closed under unnecessary working conditions, the discharge capacity of an 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.

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

While certain specific embodiments of the application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the 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 application. The scope of the application is defined by the appended claims.

Claims (8)

1. An engine oil gallery system, comprising:

a cylinder;

the oil duct component 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 simultaneously opened or simultaneously closed;

A control valve communicated with the oil duct component, wherein the control valve controls the synchronous movement of a plurality of piston cooling nozzles by controlling the on-off of a part of the oil duct component,

The oil passage assembly includes: the oil return way, the oil return way is located along vertical direction extension the cylinder body, be equipped with the oil return oil circuit in the oil return way, the oil return way includes: the first oil return pipe and the second oil return pipe are matched, the first oil return pipe and the second oil return pipe are conical pieces respectively, the size of the lower end of the first oil return pipe is smaller than that of the upper end, and the size of the upper end of the second oil return pipe is smaller than that of the lower end;

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 part protruding downwards, and the lower surface of the first protruding part 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 protruding part protruding upwards, and the upper surface of the second protruding 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.

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

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

the second main oil duct is arranged at intervals with the first main oil duct, a second oil feeding oil way is arranged in the second main oil duct and is communicated with the first oil feeding oil way, the control valve and the plurality of piston cooling nozzles are arranged in the second main oil duct and are communicated with the second oil feeding oil way, and the control valve controls the on-off of the second oil feeding oil way to control the plurality of piston cooling nozzles to synchronously move.

3. The engine oil gallery system of claim 2, wherein a first end of the second oil supply passage is in communication with the first oil supply passage, a second end of the second oil supply passage is closed, a plurality of the piston cooling nozzles are disposed in the second main oil passage at intervals along an axial direction of the second oil supply passage, and the control valve is disposed at the first end of the second oil supply passage to control the second oil supply passage to communicate with or to disconnect from the first oil supply passage.

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

And an inclined oil passage which is obliquely arranged 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 be communicated with the first oil feeding oil passage and the second oil feeding oil passage.

5. The engine oil duct system according to claim 1, wherein the cylinder block is provided with an oil collecting chamber for collecting oil, the oil return passage communicates with the oil collecting chamber so that the oil collected by the oil collecting chamber flows back from the oil return passage, and the oil collecting chamber is provided on a top surface of the cylinder block.

6. The engine oil gallery system of claim 5, wherein an upper end of said first oil return pipe communicates with said oil collection chamber, an upper end of said second oil return pipe communicates with a lower end of said first oil return pipe, a lower end of said second oil return pipe communicates with a bottom surface of said cylinder, and said oil return passage extends through top and bottom surfaces of said cylinder.

7. The control method of an engine oil passage system according to any one of claims 1 to 6, characterized by comprising the steps of:

S1, acquiring oil temperature, engine speed and engine load in an oil duct component;

S2, judging whether the oil temperature, the engine speed and the engine load in the oil duct component meet a first condition or a second condition; wherein the first condition is:

The oil temperature in the oil duct component 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:

the oil temperature in the oil duct component is higher than a first set value, the engine speed is in a third threshold interval, and the engine load is in a fourth threshold interval;

And S3, under the condition that the oil temperature, the engine rotating 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 rotating 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 communicated to open the piston cooling nozzle.

8. A vehicle comprising the engine oil gallery system of any one of claims 1-6.