Variable camshaft timing system, engine and vehicle

Abstract

The invention discloses a variable camshaft timing system, an engine and a vehicle. A variable camshaft timing system belongs to the technical field of vehicles and comprises a stator, a rotor, a control valve, a camshaft, a tile cover and a pressure sensor, the stator is provided with an adjusting groove, the rotor comprises a rotor body and blades which are connected, and the rotor body and the adjusting groove jointly define an adjusting cavity. The blade is located in the adjusting cavity and divides the adjusting cavity into a first blade chamber and a second blade chamber, the rotor body is provided with a first pressure adjusting flow channel, a second pressure adjusting flow channel and a first pressure measuring flow channel, the cam shaft is provided with a second pressure measuring flow channel, and the second pressure measuring flow channel is communicated with the first pressure measuring flow channel. The first pressure measuring flow channel and the second pressure measuring flow channel can guide media in the first blade chamber or the second blade chamber into the flow channel annular groove of the bearing cover, the pressure sensor can obtain the pressure of the media in the first blade chamber or the second blade chamber by detecting the pressure of the media in the flow channel annular groove, and therefore diagnosis and troubleshooting of the variable camshaft timing system are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a variable camshaft timing system, an engine and a vehicle. Background Art

[0002] VCT (Variable Camshaft Timing) has the function of adjusting the camshaft timing so that the engine always runs at the optimal performance. During product development and actual use, VCT may have faults such as failure to unlock the stator and rotor, slow adjustment speed, and VCT jitter. Insufficient pressure or pressure fluctuation in the VCT high-pressure oil chamber may cause the above-mentioned faults in VCT. When diagnosing and troubleshooting the problem, since the VCT high-pressure oil chamber is enclosed inside the VCT, the VCT is in a high-speed operation state when working, and it is difficult to directly measure the oil pressure in the internal high-pressure oil chamber, which is not conducive to the diagnosis and troubleshooting of the problem and affects the product development cycle. Summary of the invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present invention provides a variable camshaft timing system, which can measure the medium pressure of the first blade chamber or the second blade chamber inside the system, so as to facilitate the diagnosis and troubleshooting of problems of the variable camshaft timing system.

[0004] The present invention also provides an engine having the variable camshaft timing system.

[0005] The present invention also provides a vehicle having the engine.

[0006] According to an embodiment of the present invention, a variable camshaft timing system comprises: a stator, a rotor, a control valve, a camshaft, a camshaft cover and a pressure sensor, wherein the stator is suitable for being connected to a crankshaft transmission, and the stator has an adjustment slot; the rotor is arranged in the stator, and the rotor comprises a rotor body and blades connected to each other, the rotor body and the adjustment slot jointly define an adjustment chamber, the blades are located in the adjustment chamber and divide the adjustment chamber into a first blade chamber and a second blade chamber, the rotor body has a first pressure regulating flow channel, a second pressure regulating flow channel and a first pressure measuring flow channel, the first pressure regulating flow channel is connected to the first blade chamber, the second pressure regulating flow channel is connected to the second blade chamber, the first blade chamber and the One of the second blade chambers is connected to the first pressure measuring channel; the control valve is respectively connected to the first pressure regulating channel and the second pressure regulating channel, and the control valve is used to adjust the medium pressure of the first blade chamber and the second blade chamber; the camshaft is connected to the rotor body, and the camshaft has a second pressure measuring channel, and the second pressure measuring channel is connected to the first pressure measuring channel; the shoe cover is sleeved on the outside of the camshaft, and the shoe cover has a channel ring groove and a sensor mounting hole, and the sensor mounting hole is connected to the second pressure measuring channel through the channel ring groove; the pressure sensor is installed in the sensor mounting hole, and the pressure sensor is used to detect the medium pressure in the channel ring groove.

[0007] According to the variable camshaft timing system of an embodiment of the present invention, by setting a first pressure measuring channel on the rotor body and a second pressure measuring channel on the camshaft, the medium in the first blade chamber or the second blade chamber can be guided to the flow channel ring groove of the shoe cover. The pressure sensor can obtain the medium pressure in the first blade chamber or the second blade chamber by detecting the medium pressure in the flow channel ring groove, so as to facilitate the diagnosis and troubleshooting of problems of the variable camshaft timing system.

[0008] According to some embodiments of the present invention, the first pressure measuring channel is connected to the first blade chamber through the first pressure regulating channel, or the first pressure measuring channel is connected to the second blade chamber through the second pressure regulating channel.

[0009] According to some embodiments of the present invention, the second pressure measuring channel includes: an axial flow channel section and a radial flow channel section, the axial flow channel section extends along the axial direction of the camshaft, the axial flow channel section is coaxially opposite to and connected to the first pressure measuring channel; the radial flow channel section extends along the radial direction of the camshaft, one end of the radial flow channel section is connected to the flow channel ring groove, and the other end of the radial flow channel section is connected to the axial flow channel section.

[0010] According to some embodiments of the present invention, the stator has a plurality of the adjustment slots, and the rotor includes a plurality of the blades, and the plurality of the blades correspond one-to-one to the plurality of the adjustment slots to form a plurality of the first blade chambers and a plurality of the second blade chambers; the rotor body has a plurality of the first pressure regulating flow channels and a plurality of the second pressure regulating flow channels, and the plurality of the first pressure regulating flow channels are connected one-to-one to the plurality of the first blade chambers, and the plurality of the second pressure regulating flow channels are connected one-to-one to the plurality of the second blade chambers.

[0011] According to some embodiments of the present invention, there are multiple first pressure measuring channels, and each of the first pressure measuring channels is respectively connected to a different first blade chamber, or each of the first pressure measuring channels is respectively connected to a different second blade chamber.

[0012] According to some embodiments of the present invention, there are multiple second pressure measuring channels, and the multiple second pressure measuring channels are connected to the multiple first pressure measuring channels in a one-to-one correspondence.

[0013] According to some embodiments of the present invention, the control valve is installed on the camshaft, the camshaft has a third pressure regulating flow channel, the shoe cover has a fourth pressure regulating flow channel, and the fourth pressure regulating flow channel is connected to the control valve through the third pressure regulating flow channel.

[0014] According to some embodiments of the present invention, the variable camshaft timing system is an intake timing system and / or an exhaust timing system.

[0015] An engine according to another embodiment of the present invention includes the variable camshaft timing system described above.

[0016] According to the engine of the embodiment of the present invention, its variable camshaft timing system can guide the medium in the first blade chamber or the second blade chamber to the flow channel ring groove of the camshaft by setting a first pressure measuring channel on the rotor body and a second pressure measuring channel on the camshaft. The pressure sensor can obtain the medium pressure in the first blade chamber or the second blade chamber by detecting the medium pressure in the flow channel ring groove, so as to facilitate the diagnosis and troubleshooting of problems of the variable camshaft timing system.

[0017] A vehicle according to another aspect of an embodiment of the present invention includes the above-mentioned engine.

[0018] According to the vehicle of the embodiment of the present invention, its variable camshaft timing system can guide the medium in the first blade chamber or the second blade chamber to the flow channel ring groove of the shoe cover by setting a first pressure measuring channel on the rotor body and a second pressure measuring channel on the camshaft. The pressure sensor can obtain the medium pressure in the first blade chamber or the second blade chamber by detecting the medium pressure in the flow channel ring groove, so as to facilitate the diagnosis and troubleshooting of problems of the variable camshaft timing system.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of a variable camshaft timing system and an upper cover according to an embodiment of the present invention;

[0021] Figure 2 is a cross-sectional view of an engine at a variable camshaft timing system according to an embodiment of the present invention;

[0022] Figure 3 is a cross-section of a rotor and a stator according to an embodiment of the present invention Figure 1 ;

[0023] Figure 4 is a cross-section of a rotor and a stator according to an embodiment of the present invention Figure 2 ;

[0024] Figure 5 is a cross-sectional view of a camshaft and a control valve according to an embodiment of the present invention;

[0025] Figure 6 is a perspective view of a camshaft according to an embodiment of the present invention;

[0026] Figure 7 is a three-dimensional diagram of a tile cover according to an embodiment of the present invention;

[0027] Figure 8 1 is a perspective view of an upper cover and a cylinder block of an engine according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] stator 1; regulating slot 11; regulating chamber 111; first blade chamber 1111; second blade chamber 1112;

[0030] Rotor 2; rotor body 21; first pressure regulating channel 211; second pressure regulating channel 212; first pressure measuring channel 213; blade 22;

[0031] Control valve 3;

[0032] Camshaft 4; second pressure measuring channel 41; axial channel section 411; radial channel section 412; third pressure regulating channel 42;

[0033] Tiles cover 5; channel annular groove 51; sensor mounting hole 52; fourth pressure regulating channel 53;

[0034] Pressure sensor 6; wiring harness 61;

[0035] Variable camshaft timing system 10; intake timing system 101; exhaust timing system 102; upper cover 20; wire hole 201; cylinder block 30. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Combine the following Figure 1-Figure 8 A variable camshaft timing system 10 , an engine, and a vehicle according to an embodiment of the present invention are described in detail.

[0041] Reference Figure 1-Figure 7As shown, the variable camshaft timing system 10 according to the embodiment of the present invention includes: a stator 1, a rotor 2, a control valve 3, a camshaft 4, a bearing cap 5 and a pressure sensor 6. The stator 1 is suitable for being connected to the crankshaft driving, the stator 1 has an adjustment groove 11, the rotor 2 is arranged in the stator 1, the rotor 2 includes a connected rotor body 21 and a blade 22, the rotor body 21 and the adjustment groove 11 together define an adjustment chamber 111, the blade 22 is located in the adjustment chamber 111 and divides the adjustment chamber 111 into a first blade chamber 1111 and a second blade chamber 1112, the rotor body 21 has a first pressure regulating flow channel 211, a second pressure regulating flow channel 212 and a first pressure measuring flow channel 213, the first pressure regulating flow channel 211 is connected to the first blade chamber 1111, and the second pressure regulating flow channel 212 is connected to the second blade chamber 1112. 112 is connected, one of the first blade chamber 1111 and the second blade chamber 1112 is connected to the first pressure measuring channel 213, the control valve 3 is connected to the first pressure regulating channel 211 and the second pressure regulating channel 212 respectively, the control valve 3 is used to adjust the medium pressure of the first blade chamber 1111 and the second blade chamber 1112, the camshaft 4 is connected to the rotor body 21, the camshaft 4 has a second pressure measuring channel 41, the second pressure measuring channel 41 is connected to the first pressure measuring channel 213, the shoe cover 5 is sleeved on the outside of the camshaft 4, the shoe cover 5 has a channel annular groove 51 and a sensor mounting hole 52, the sensor mounting hole 52 is connected to the second pressure measuring channel 41 through the channel annular groove 51, the pressure sensor 6 is installed in the sensor mounting hole 52, the pressure sensor 6 is used to detect the medium pressure in the channel annular groove 51.

[0042] Among them, the bearing cover 5 is sleeved on the outer side of the camshaft 4 to support and radially limit the camshaft 4, the stator 1 can be connected to the crankshaft transmission through a transmission chain, the camshaft 4 can be connected to the rotor body 21 through a positioning pin, the sensor mounting hole 52 can be a threaded hole, the pressure sensor 6 can be threadedly matched with the sensor mounting hole 52 to install and fix the pressure sensor 6 on the bearing cover 5, the control valve 3 can be an OCV valve (Oil Control Valve), the medium can be engine oil, the first pressure regulating flow channel 211 and the second pressure regulating flow channel 212 are staggered in the radial direction of the rotor 2, so that the first pressure regulating flow channel 211 and the second pressure regulating flow channel 212 are respectively connected to the corresponding first blade chamber 1111 and the second blade chamber 1112, and the first pressure regulating flow channel 211 and the second pressure regulating flow channel 212 are staggered in the axial direction of the rotor 2, that is, Figure 3 and Figure 4 The directions perpendicular to the paper surface are staggered to reduce the impact on the structural strength of the rotor 2 .

[0043] It should be noted that the variable camshaft timing system 10 can be applied to the engine. When the engine is working, the crankshaft of the engine can drive the stator 1 to rotate, the stator 1 can drive the rotor 2 to rotate, the rotor 2 can drive the camshaft 4 to rotate synchronously, and the camshaft 4 can drive the engine valve to open or close. The variable camshaft timing system 10 can adjust the timing of valve opening or closing by adjusting the phase of the camshaft 4, so that the engine always runs at optimal performance.

[0044] Specifically, the control valve 3 can provide medium to the first blade chamber 1111 and the second blade chamber 1112 respectively through the first pressure regulating channel 211 and the second pressure regulating channel 212. The control valve 3 can adjust the medium flow rate flowing into the first blade chamber 1111 and the medium flow rate flowing into the second blade chamber 1112 respectively to adjust the medium pressure of the first blade chamber 1111 and the medium pressure of the second blade chamber 1112. When the medium pressure of the first blade chamber 1111 and the medium pressure of the second blade chamber 1112 are different, the blade 22 can drive the rotor body 21 to rotate relative to the stator 1 under the action of the medium pressure difference of the blade chambers on both sides thereof, and the rotor body 21 can drive the camshaft 4 to rotate, thereby adjusting the phase of the camshaft 4 to adjust the timing of opening or closing the valve.

[0045] For example, refer to Figure 3 As shown, when the control valve 3 increases the medium flow rate flowing into the first vane chamber 1111, the medium pressure in the first vane chamber 1111 is greater than the medium pressure in the second vane chamber 1112, and the vane 22 can rotate clockwise ( Figure 3 The blade 22 can drive the camshaft 4 to rotate clockwise relative to the stator 1 through the rotor body 21, so that the valve can be opened early or closed late, referring to Figure 4 As shown, when the control valve 3 increases the medium flow rate flowing into the second vane chamber 1112, the medium pressure in the second vane chamber 1112 is greater than the medium pressure in the first vane chamber 1111, and the vane 22 can rotate counterclockwise ( Figure 4 The blade 22 can drive the camshaft 4 to rotate counterclockwise relative to the stator 1 through the rotor body 21, so that the valve can be closed early or opened later.

[0046] It can be understood that one of the first blade chamber 1111 and the second blade chamber 1112 is connected to the first pressure measuring channel 213. When the first blade chamber 1111 is connected to the first pressure measuring channel 213, the medium in the first blade chamber 1111 can flow to the second pressure measuring channel 41 through the first pressure measuring channel 213, and then flow to the channel annular groove 51 of the tile cover 5 through the second pressure measuring channel 41. The pressure sensor 6 can obtain the medium pressure in the first blade chamber 1111 by detecting the medium pressure in the channel annular groove 51.

[0047] When the second blade chamber 1112 is connected to the first pressure measuring channel 213, the medium in the second blade chamber 1112 can flow to the second pressure measuring channel 41 through the first pressure measuring channel 213, and then flow to the channel annular groove 51 of the tile cover 5 through the second pressure measuring channel 41. The pressure sensor 6 can obtain the medium pressure in the second blade chamber 1112 by measuring the medium pressure in the channel annular groove 51.

[0048] By real-time detection of the medium pressure in the first blade chamber 1111 or the second blade chamber 1112 by the pressure sensor 6, the internal state of the variable camshaft timing system 10 during operation can be intuitively obtained. When the variable camshaft timing system 10 fails to unlock, the adjustment speed is slow, the VCT jitter and other faults occur, it can be quickly identified whether the medium pressure in the first blade chamber 1111 or the second blade chamber 1112 is insufficient or the medium pressure fluctuates, which provides a troubleshooting direction for problem solving, shortens the problem diagnosis and troubleshooting cycle, and ensures that the project development cycle is completed as planned.

[0049] In this embodiment, by setting a first pressure measuring channel 213 on the rotor body 21 and a second pressure measuring channel 41 on the camshaft 4, the medium in the first blade chamber 1111 or the second blade chamber 1112 can be guided to the channel annular groove 51 of the tile cover 5, and the pressure sensor 6 installed on the tile cover 5 can obtain the medium pressure in the first blade chamber 1111 or the second blade chamber 1112 by detecting the medium pressure in the channel annular groove 51. By measuring the medium pressure in the first blade chamber 1111 or the second blade chamber 1112 in this way, it is possible to avoid complicated installation operations of the pressure sensor 6 in the narrow first blade chamber 1111 and the second blade chamber 1112, which is beneficial to reducing the difficulty of detecting the medium pressure in the first blade chamber 1111 or the second blade chamber 1112.

[0050] According to the variable camshaft timing system 10 of the embodiment of the present invention, by setting a first pressure measuring channel 213 on the rotor body 21 and a second pressure measuring channel 41 on the camshaft 4, the medium in the first vane chamber 1111 or the second vane chamber 1112 can be guided into the channel annular groove 51 of the shoe cover 5, and the pressure sensor 6 can obtain the medium pressure in the first vane chamber 1111 or the second vane chamber 1112 by detecting the medium pressure in the channel annular groove 51, so as to facilitate the diagnosis and troubleshooting of problems of the variable camshaft timing system 10.

[0051] In some embodiments of the present invention, the first pressure measuring channel 213 is connected to the first blade chamber 1111 through the first pressure regulating channel 211, or the first pressure measuring channel 213 is connected to the second blade chamber 1112 through the second pressure regulating channel 212. When the first pressure measuring channel 213 is connected to the first blade chamber 1111 through the first pressure regulating channel 211, refer to Figure 2 and Figure 3 As shown, the medium in the first blade chamber 1111 can flow to the first pressure measuring channel 213 through the first pressure regulating channel 211 to make full use of the first pressure regulating channel 211, and there is no need for the rotor 2 to additionally process the channel connected to the first pressure measuring channel 213, which is beneficial to reducing the structural difficulty of the rotor 2 and reducing the difficulty of manufacturing the rotor 2. When the first pressure measuring channel 213 is connected to the second blade chamber 1112 through the second pressure regulating channel 212, the medium in the second blade chamber 1112 can flow to the second pressure measuring channel 41 through the second pressure regulating channel 212 to make full use of the second pressure regulating channel 212, and there is no need for the rotor 2 to additionally process the channel connected to the second pressure measuring channel 41, which is beneficial to reducing the structural difficulty of the rotor 2 and reducing the difficulty of manufacturing the rotor 2.

[0052] In some embodiments of the present invention, reference Figure 2 , Figure 5 and Figure 6 As shown, the second pressure measuring channel 41 includes: an axial flow channel section 411 and a radial flow channel section 412. The axial flow channel section 411 extends along the axial direction of the camshaft 4. The axial flow channel section 411 is coaxially opposite to and connected to the first pressure measuring channel 213. The radial flow channel section 412 extends along the radial direction of the camshaft 4. One end of the radial flow channel section 412 is connected to the flow channel annular groove 51, and the other end of the radial flow channel section 412 is connected to the axial flow channel section 411.

[0053] It can be understood that the axial flow channel section 411 is connected along the axial direction of the camshaft 4, and the radial flow channel section 412 extends along the radial direction of the camshaft 4. When processing the second pressure measuring channel 41, drilling equipment can be used to perform linear drilling in the axial direction and radial direction of the camshaft 4, respectively, so as to process the axial flow channel section 411 and the radial flow channel section 412, respectively. The processing method of the axial flow channel section 411 and the radial flow channel section 412 is simple, which is convenient for the production and manufacturing of the camshaft 4. The axial flow channel section 411 is coaxially opposite to and connected to the first pressure measuring channel 213. When assembling the camshaft 4 and the rotor 2, the axial flow channel section 411 is convenient for docking with the first pressure measuring channel 213, which is beneficial to the assembly and positioning of the camshaft 4 and the rotor 2.

[0054] Reference Figure 2 As shown, one end of the radial flow channel section 412 away from the axis of the camshaft 4 is connected to the flow channel annular groove 51, and the end of the radial flow channel section 412 close to the axis of the camshaft 4 is connected to the axial flow channel section 411. The medium in the first pressure measuring channel 213 can first flow into the radial flow channel section 412 through the axial flow channel section 411, and then the medium can flow into the flow channel annular groove 51 through the radial flow channel section 412, so that the pressure sensor 6 can detect the medium pressure in the flow channel annular groove 51.

[0055] In some embodiments of the present invention, reference Figure 3 As shown, the stator 1 has a plurality of adjustment slots 11, the rotor 2 includes a plurality of blades 22, and the plurality of blades 22 correspond one-to-one to the plurality of adjustment slots 11 to form a plurality of first blade chambers 1111 and a plurality of second blade chambers 1112. The rotor body 21 has a plurality of first pressure regulating channels 211 and a plurality of second pressure regulating channels 212, the plurality of first pressure regulating channels 211 are connected one-to-one with the plurality of first blade chambers 1111, and the plurality of second pressure regulating channels 212 are connected one-to-one with the plurality of second blade chambers 1112, which is conducive to the stable and reliable rotation of the rotor 2.

[0056] It can be understood that when the engine valve needs to open in advance or close later, the control valve 3 can provide medium to each first blade chamber 1111 through multiple first pressure regulating channels 211, so as to simultaneously adjust the medium pressure of each first blade chamber 1111, thereby ensuring that the medium pressure of each first blade chamber 1111 is the same, which is beneficial to ensure that the force applied to each blade 22 is the same, thereby helping to improve the stability and reliability of the rotation of the rotor 2.

[0057] When the engine valve needs to be closed early or opened later, the control valve 3 can provide medium to each second blade chamber 1112 through multiple second pressure regulating channels 212 to adjust the medium pressure of each second blade chamber 1112, ensuring that the medium pressure of each second blade chamber 1112 is the same, which is beneficial to ensure that the force on each blade 22 is the same, thereby helping to improve the stability and reliability of the rotation of the rotor 2.

[0058] In some embodiments of the present invention, reference Figure 3 As shown, there are multiple first pressure measuring channels 213, and each first pressure measuring channel 213 is respectively connected to a different first blade chamber 1111, or each first pressure measuring channel 213 is respectively connected to a different second blade chamber 1112. Multiple first pressure measuring channels 213 can increase the flow area of ​​the medium, thereby increasing the medium flow rate of the flow channel annular groove 51 flowing to the tile cover 5, which is beneficial for the pressure sensor 6 to accurately detect the medium pressure of the first blade chamber 1111 or the second blade chamber 1112.

[0059] In some embodiments, each first pressure measuring channel 213 is respectively connected to a different first blade chamber 1111. The medium in each first blade chamber 1111 can flow to the second pressure measuring channel 41 through the corresponding first pressure measuring channel 213, and then flow to the channel annular groove 51 of the tile cover 5 through the second pressure measuring channel 41, thereby increasing the medium flow rate flowing into the channel annular groove 51, so that the pressure sensor 6 can accurately detect the medium pressure in the first blade chamber 1111.

[0060] In other embodiments, each first pressure measuring channel 213 is respectively connected to a different second blade chamber 1112, and the medium in each second blade chamber 1112 can flow to the second pressure measuring channel 41 through the corresponding first pressure measuring channel 213, and then flow to the channel annular groove 51 of the tile cover 5 through the second pressure measuring channel 41, thereby increasing the medium flow rate flowing into the channel annular groove 51, so that the pressure sensor 6 can accurately detect the medium pressure in the second blade chamber 1112.

[0061] In some embodiments of the present invention, reference Figure 2 and Figure 5 As shown, there are multiple second pressure measuring channels 41, and the multiple second pressure measuring channels 41 are connected to the multiple first pressure measuring channels 213 in a one-to-one correspondence. The second pressure measuring channels 41 have a simple structure, which is convenient for the processing and manufacturing of the camshaft 4. The multiple second pressure measuring channels 41 can guide the media in the multiple corresponding first pressure measuring channels 213 to the channel ring groove 51 of the tile cover 5. The camshaft 4 does not need to process a complex channel for bringing the multiple second pressure measuring channels 41 together and connecting them with the second pressure measuring channels 41, which can effectively reduce the structural difficulty of the camshaft 4 and facilitate the processing and manufacturing of the camshaft 4.

[0062] In some embodiments of the present invention, reference Figure 2 and Figure 5As shown, the control valve 3 is installed on the camshaft 4, the camshaft 4 has a third pressure regulating channel 42, the wavy cover 5 has a fourth pressure regulating channel 53, the fourth pressure regulating channel 53 is connected to the control valve 3 through the third pressure regulating channel 42, and the medium in the fourth pressure regulating channel 53 can provide the medium to the control valve 3 through the third pressure regulating channel 42, wherein, the camshaft 4 may have a threaded hole, and the control valve 3 may have an external thread that matches the threaded hole. The control valve 3 and the threaded hole can be threadedly matched to install the control valve 3 on the camshaft 4, and the installation operation of the control valve 3 is simple and convenient, which is convenient for the assembly of the variable camshaft timing system 10.

[0063] In some embodiments of the present invention, the variable camshaft timing system 10 is an intake timing system 101 and / or an exhaust timing system 102. When the variable camshaft timing system 10 is an intake timing system 101, the intake timing system 101 can be used to adjust the timing of opening and closing of the intake valve of the engine. When the variable camshaft timing system 10 is an exhaust timing system 102, the exhaust timing system 102 is suitable for adjusting the timing of opening and closing of the exhaust valve of the engine. When the variable camshaft timing system 10 is an intake timing system 101 and an exhaust timing system 102, refer to Figure 1 As shown, the intake timing system 101 can be used to adjust the timing of opening and closing of the intake valve of the engine, and the exhaust timing system 102 is suitable for adjusting the timing of opening and closing of the exhaust valve of the engine.

[0064] In some embodiments of the present invention, reference Figure 8 As shown, the variable camshaft timing system 10 can be installed on the upper cover 20 of the engine, and the upper cover 20 has an oil supply circuit connected to the cylinder block 30 of the engine, and the oil supply circuit is suitable for being connected to the fourth pressure regulating channel 53. The medium in the oil supply circuit can flow to the fourth pressure regulating channel 53, and the medium flowing into the fourth pressure regulating channel 53 can flow to the control valve 3 through the third pressure regulating channel 42. The control valve 3 can provide medium to the first pressure regulating channel 211 or the second pressure regulating channel 212 to adjust the medium pressure in the first blade chamber 1111 and the second blade chamber 1112.

[0065] In some embodiments of the present invention, reference Figure 1 and Figure 8 As shown, the upper cover 20 has a wire hole 201, and the wire harness 61 of the pressure sensor 6 can pass through the wire hole 201 and communicate with the computer outside the variable camshaft timing system 10. The computer can obtain the oil pressure data of the high-pressure oil chamber (the first vane chamber or the second vane chamber) of the variable camshaft timing system 10 through the pressure sensor 6.

[0066] An engine according to another embodiment of the present invention includes the variable camshaft timing system 10 described above.

[0067] According to the engine of the embodiment of the present invention, its variable camshaft timing system 10 can guide the medium in the first vane chamber 1111 or the second vane chamber 1112 to the flow channel annular groove 51 of the shoe cover 5 by setting a first pressure measuring channel 213 on the rotor body 21 and a second pressure measuring channel 41 on the camshaft 4. The pressure sensor 6 can obtain the medium pressure in the first vane chamber 1111 or the second vane chamber 1112 by detecting the medium pressure in the flow channel annular groove 51, so as to facilitate the diagnosis and troubleshooting of problems of the variable camshaft timing system 10.

[0068] A vehicle according to another aspect of an embodiment of the present invention includes the above-mentioned engine.

[0069] According to the vehicle of the embodiment of the present invention, its variable camshaft timing system 10 can guide the medium in the first vane chamber 1111 or the second vane chamber 1112 to the flow channel annular groove 51 of the shoe cover 5 by setting a first pressure measuring channel 213 on the rotor body 21 and a second pressure measuring channel 41 on the camshaft 4. The pressure sensor 6 can obtain the medium pressure in the first vane chamber 1111 or the second vane chamber 1112 by detecting the medium pressure in the flow channel annular groove 51, so as to facilitate the diagnosis and troubleshooting of problems of the variable camshaft timing system 10.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0071] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A variable camshaft timing system, characterized in that: include: A stator (1), the stator (1) being suitable for being drivingly connected to a crankshaft, the stator (1) having an adjustment slot (11); A rotor (2), wherein the rotor (2) is arranged in the stator (1), and the rotor (2) comprises a rotor body (21) and blades (22) connected to each other; the rotor body (21) and the regulating groove (11) together define a regulating chamber (111); the blades (22) are located in the regulating chamber (111) and divide the regulating chamber (111) into a first blade chamber (1111) and a second blade chamber (1112); the rotor body (21) has a first pressure regulating flow channel (211), a second pressure regulating flow channel (212) and a first pressure measuring flow channel (213); the first pressure regulating flow channel (211) is in communication with the first blade chamber (1111), the second pressure regulating flow channel (212) is in communication with the second blade chamber (1112), and one of the first blade chamber (1111) and the second blade chamber (1112) is in communication with the first pressure measuring flow channel (213); a control valve (3), the control valve (3) being connected to the first pressure regulating channel (211) and the second pressure regulating channel (212) respectively, and the control valve (3) being used to adjust the medium pressure of the first blade chamber (1111) and the second blade chamber (1112); A camshaft (4), the camshaft (4) being connected to the rotor body (21), the camshaft (4) having a second pressure measuring channel (41), the second pressure measuring channel (41) being connected to the first pressure measuring channel (213); A bearing cover (5), the bearing cover (5) being sleeved on the outer side of the camshaft (4), the bearing cover (5) having a flow channel annular groove (51) and a sensor mounting hole (52), the sensor mounting hole (52) being connected to the second pressure measuring flow channel (41) through the flow channel annular groove (51); A pressure sensor (6), the pressure sensor (6) being mounted on the sensor mounting hole (52), the pressure sensor (6) being used to detect the medium pressure in the flow channel annular groove (51).

2. The variable camshaft timing system according to claim 1, characterized in that: The first pressure measuring channel (213) is connected to the first blade chamber (1111) via the first pressure regulating channel (211), or the first pressure measuring channel (213) is connected to the second blade chamber (1112) via the second pressure regulating channel (212).

3. The variable camshaft timing system according to claim 2, characterized in that: The second pressure measuring channel (41) comprises: an axial flow channel section (411), the axial flow channel section (411) extending along the axial direction of the camshaft (4), the axial flow channel section (411) being coaxially opposed to and in communication with the first pressure measuring flow channel (213); A radial flow channel section (412), the radial flow channel section (412) extending along the radial direction of the camshaft (4), one end of the radial flow channel section (412) being connected to the flow channel annular groove (51), and the other end of the radial flow channel section (412) being connected to the axial flow channel section (411).

4. The variable camshaft timing system according to claim 1, characterized in that: The stator (1) has a plurality of the adjusting slots (11), the rotor (2) includes a plurality of the blades (22), and the plurality of blades (22) correspond one-to-one to the plurality of the adjusting slots (11) to form a plurality of the first blade chambers (1111) and a plurality of the second blade chambers (1112); The rotor body (21) has a plurality of the first pressure regulating flow channels (211) and a plurality of the second pressure regulating flow channels (212); the plurality of the first pressure regulating flow channels (211) are connected to the plurality of the first blade chambers (1111) in a one-to-one correspondence; and the plurality of the second pressure regulating flow channels (212) are connected to the plurality of the second blade chambers (1112) in a one-to-one correspondence.

5. The variable camshaft timing system according to claim 4, characterized in that: There are multiple first pressure measuring channels (213), and each of the first pressure measuring channels (213) is respectively connected to a different first blade chamber (1111), or each of the first pressure measuring channels (213) is respectively connected to a different second blade chamber (1112).

6. The variable camshaft timing system according to claim 5, characterized in that: The number of the second pressure measuring channels (41) is plural, and the plural second pressure measuring channels (41) are connected to the plural first pressure measuring channels (213) in a one-to-one correspondence.

7. The variable camshaft timing system according to claim 1, characterized in that: The control valve (3) is mounted on the camshaft (4), the camshaft (4) has a third pressure regulating flow channel (42), the shoe cover (5) has a fourth pressure regulating flow channel (53), and the fourth pressure regulating flow channel (53) is connected to the control valve (3) through the third pressure regulating flow channel (42).

8. The variable camshaft timing system according to any one of claims 1 to 7, characterized in that: The variable camshaft timing system is an intake timing system (101) and / or an exhaust timing system (102).

9. An engine, characterized in that: Comprising a variable camshaft timing system according to any one of claims 1-8.

10. A vehicle, characterized in that: Comprising an engine according to claim 9.

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