Engine assembly and vehicle

Abstract

The invention discloses an engine assembly and a vehicle. The engine assembly comprises an engine, a first-stage supercharger and a second-stage supercharger, and the engine is connected with an air inlet pipeline and an exhaust pipeline; the first-stage supercharger and the second-stage supercharger are arranged on the air inlet pipeline in series, and the second-stage supercharger is located on the downstream side of the first-stage supercharger in the flowing direction of air flow in the air inlet pipeline. Wherein one of the first-stage supercharger and the second-stage supercharger is an electric vortex supercharger, the other one of the first-stage supercharger and the second-stage supercharger is an exhaust turbocharger, the exhaust pipeline is connected with the exhaust turbocharger, and waste gas exhausted by the exhaust pipeline is used for driving the exhaust turbocharger to work. According to the engine assembly provided by the embodiment of the invention, gas is compressed more sufficiently, and air can be provided for the interior of an engine more sufficiently; the mechanical efficiency of the system is improved, and the response of the engine when the power suddenly changes can be improved; and kinetic energy in exhaust of the engine can be fully recycled, and the efficiency of the whole system is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to an engine component and a vehicle. Background Art

[0002] The engine assembly passes the pressurized air into the engine through the supercharger, and fills the engine with enough air to fully burn the fuel in the engine. In the related art, the mechanical efficiency of the mechanical supercharger used is low, and the engine has a slow response speed when the power changes suddenly, so there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to propose an engine assembly, by making the engine assembly include a first-stage supercharger and a second-stage supercharger arranged in series, adopting two-stage supercharging, the gas is compressed more fully, and the air inside the engine can be provided more fully; by making one of the superchargers an electric vortex supercharger, compared with the mechanical supercharger in the related art, the vortex supercharger has better sealing performance, can achieve more efficient supercharging, can improve the mechanical efficiency of the system, and can improve the response of the engine when the power changes suddenly; by making the other supercharger an exhaust turbocharger, the kinetic energy in the exhaust gas of the engine can be fully recovered, and the efficiency of the whole system can be improved.

[0004] The present invention also provides a vehicle comprising the engine assembly.

[0005] According to the first aspect of the present invention, the engine assembly includes: an engine, the engine is connected to an intake pipeline and an exhaust pipeline; a primary supercharger and a secondary supercharger are arranged in series in the intake pipeline, and in the flow direction of the airflow in the intake pipeline, the secondary supercharger is located on the downstream side of the primary supercharger. Among them, one of the primary supercharger and the secondary supercharger is an electric scroll supercharger, and the other is an exhaust turbocharger, the exhaust pipeline is connected to the exhaust turbocharger, and the exhaust gas discharged from the exhaust pipeline is used to drive the exhaust turbocharger to work.

[0006] According to the engine component of the embodiment of the present invention, the engine component includes a first-stage supercharger and a second-stage supercharger arranged in series, and two-stage supercharging is adopted, so that the gas is compressed more fully, and air can be provided more fully to the inside of the engine; by making one of the superchargers an electric scroll supercharger, compared with the mechanical supercharger in the related art, the scroll supercharger has better sealing performance, can achieve more efficient supercharging, can improve the mechanical efficiency of the system, and can improve the response of the engine when the power changes suddenly; by making the other supercharger an exhaust turbocharger, the kinetic energy in the exhaust gas of the engine can be fully recovered, thereby improving the efficiency of the entire system.

[0007] According to some embodiments of the present invention, the first-stage supercharger is an electric scroll supercharger, and the second-stage supercharger is an exhaust gas turbocharger.

[0008] According to some embodiments of the present invention, the engine assembly further includes a bypass line and a bypass valve, the bypass line is connected in parallel with the first-stage supercharger, and the bypass valve is arranged in the bypass line to control the on-off of the bypass line.

[0009] According to some embodiments of the present invention, the engine assembly includes a motor, and the motor is connected to the electric scroll supercharger to drive the electric scroll supercharger to operate.

[0010] According to some embodiments of the present invention, the engine assembly includes a battery, and the battery is connected to the motor to supply power to the motor.

[0011] According to some embodiments of the present invention, a circuit breaker is connected between the motor and the battery, and the circuit breaker is used to control the on-off of the circuit between the battery and the motor.

[0012] According to some embodiments of the present invention, the exhaust turbocharger includes an exhaust gas turbine, a drive shaft and a turbocharger pressure plate, one end of the drive shaft is connected to the exhaust gas turbine, and the other end of the drive shaft is connected to the turbocharger pressure plate, the turbocharger pressure plate is arranged in the intake pipe, and the exhaust gas turbine is arranged in the exhaust pipe, and the exhaust gas discharged from the exhaust pipe is used to drive the exhaust gas turbine to move.

[0013] According to some embodiments of the present invention, the engine component further includes an exhaust branch and an exhaust valve, the exhaust branch is connected in parallel with the exhaust gas turbine, and the exhaust valve is arranged in the exhaust branch and is used to control the on-off of the exhaust branch.

[0014] According to some embodiments of the present invention, the engine component also includes an exhaust gas recirculation system, which includes an exhaust gas recovery pipe and an exhaust gas control valve, one end of the exhaust gas recovery pipe is connected to the exhaust pipe, and the other end of the exhaust gas recovery pipe is connected to the intake pipe, and the exhaust gas control valve is arranged on the exhaust gas recovery pipe.

[0015] According to some embodiments of the present invention, a connection point between the exhaust gas recovery pipe and the air intake pipeline is located at a downstream side of the secondary supercharger.

[0016] According to some embodiments of the present invention, the exhaust turbocharger includes an exhaust gas turbine, a drive shaft and a turbocharger pressure plate, one end of the drive shaft is connected to the exhaust gas turbine, and the other end of the drive shaft is connected to the turbocharger pressure plate, the turbocharger pressure plate is arranged in the intake pipe, and the exhaust gas turbine is arranged in the exhaust pipe, the exhaust gas discharged from the exhaust pipe is used to drive the exhaust gas turbine to move, and the connection point between the exhaust gas recovery pipe and the exhaust pipe is located on the upstream side of the exhaust gas turbine.

[0017] According to some embodiments of the present invention, a connection point between the exhaust gas recovery pipe and the air intake pipeline is located at an upstream side of the first-stage supercharger.

[0018] According to some embodiments of the present invention, the exhaust turbocharger includes an exhaust gas turbine, a drive shaft and a turbocharger pressure plate, one end of the drive shaft is connected to the exhaust gas turbine, and the other end of the drive shaft is connected to the turbocharger pressure plate, the turbocharger pressure plate is arranged in the intake pipe, and the exhaust gas turbine is arranged in the exhaust pipe, the exhaust gas discharged from the exhaust pipe is used to drive the exhaust gas turbine to move, and the connection point between the exhaust gas recovery pipe and the exhaust pipe is located on the downstream side of the exhaust gas turbine.

[0019] According to some embodiments of the present invention, the exhaust gas recirculation system further includes a cooler, and the cooler is disposed in the exhaust gas recovery pipe.

[0020] According to some embodiments of the present invention, the exhaust gas recirculation system further includes a filter element, and the filter element is arranged in the exhaust gas recovery pipe.

[0021] According to some embodiments of the present invention, the filter element is located on the upstream side of the exhaust control valve.

[0022] A vehicle according to an embodiment of a second aspect of the present invention comprises: an engine assembly according to an embodiment of the first aspect of the present invention.

[0023] The vehicle according to the embodiment of the present invention, by including the engine assembly according to the first aspect of the embodiment of the present invention, can provide air more fully to the interior of the engine, thereby improving the response of the engine when the power changes suddenly; achieving more efficient supercharging can improve the mechanical efficiency of the system; and can fully recover the kinetic energy in the exhaust gas of the engine, thereby improving the efficiency of the entire system.

[0024] 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

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic diagram of an engine assembly according to some embodiments of the present invention; Figure 2 is a schematic diagram of an engine assembly according to some other embodiments of the present invention; Figure 3 is a schematic diagram of an engine assembly according to yet other embodiments of the present invention.

[0026] Reference numerals: 100. Engine components; 10. Engine; 11. Intake pipe; 110. Intake manifold; 111. Supercharger; 12. First-stage supercharger; 121. Electric scroll supercharger; 13. Second-stage supercharger; 14. Motor; 17. Battery; 18. Circuit breaker; 19. Bypass pipe; 20. Bypass valve; 21. Intercooler; 22. Exhaust pipe; 221. Exhaust manifold; 40. Exhaust turbocharger; 41. Exhaust gas turbine; 42. Transmission shaft; 43. Turbocharger pressure plate; 50. Exhaust branch; 51. Exhaust valve; 60. Exhaust gas recirculation system; 61. Exhaust gas recovery pipe; 62. Exhaust gas control valve; 63. Cooler; 64. Filter element. DETAILED DESCRIPTION

[0027] 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] Reference below Figure 1-Figure 3 An engine assembly 100 according to an embodiment of the present invention is described.

[0029] The engine assembly 100 according to the first embodiment of the present invention comprises: an engine 10 , a primary supercharger 12 and a secondary supercharger 13 .

[0030] The engine 10 is connected to an intake pipe 11 and an exhaust pipe 22. Air enters the engine 10 through the intake pipe 11, so that the fuel inside the engine 10 can be burned more fully. For example, the end of the intake pipe 11 forms an intake manifold 110, and the engine 10 is connected to the intake manifold 110. For example, the exhaust pipe 22 also includes an exhaust manifold 221, and the exhaust manifold 221 is connected to the engine 10.

[0031] The primary supercharger 12 and the secondary supercharger 13 are arranged in series in the intake pipe 11. In the flow direction of the airflow in the intake pipe 11, the secondary supercharger 13 is located at the downstream side of the primary supercharger 12. By making the engine assembly 100 include the primary supercharger 12 and the secondary supercharger 13 arranged in series, the two-stage supercharging is adopted, so that the gas can be compressed more fully, and the air inside the engine 10 can be provided more fully.

[0032] Among them, one of the primary supercharger 12 and the secondary supercharger 13 is an electric scroll supercharger 121, and the other is an exhaust turbocharger 40. The exhaust pipe 22 is connected to the exhaust turbocharger 40, and the exhaust gas discharged from the exhaust pipe 22 is used to drive the exhaust turbocharger 40 to work. By making one of the primary supercharger 12 and the secondary supercharger 13 an electric scroll supercharger 121, compared with the mechanical turbocharger in the related art, the scroll supercharger 111 has a better sealing effect, can achieve more efficient supercharging, and improve the mechanical efficiency of the system; and, because the supercharger 111 is electrically driven, the working condition of the electric scroll supercharger 121 can be decoupled from the speed of the engine 10. Compared with the related art in which all superchargers are set as pneumatic superchargers, the electric scroll supercharger 121 has a faster response speed, a wider working range, and can provide a wider selection of calibration strategies. By making the other of the primary supercharger 12 and the secondary supercharger 13 an exhaust turbocharger 40 and using the exhaust gas discharged from the exhaust pipe 22 to drive the exhaust turbocharger 40, the kinetic energy in the exhaust gas of the engine 10 can be fully recovered to improve the efficiency of the entire system.

[0033] According to the engine assembly 100 of the embodiment of the present invention, the engine assembly 100 includes a first-stage supercharger 12 and a second-stage supercharger 13 arranged in series, and two-stage supercharging is adopted, so that the gas is compressed more fully, and air can be provided more fully to the inside of the engine 10; by making one of the superchargers 111 an electric scroll supercharger 121, compared with the mechanical supercharger 111 in the related art, the scroll supercharger 111 has better sealing performance, can achieve more efficient supercharging, can improve the mechanical efficiency of the system, and can improve the response of the engine 10 when the power changes suddenly; by making the other supercharger 111 an exhaust turbocharger 40, the kinetic energy in the exhaust gas of the engine 10 can be fully recovered, thereby improving the efficiency of the entire system.

[0034] According to some embodiments of the present invention, referring to Figure 1-Figure 3, the first-stage supercharger 12 is an electric scroll supercharger 121, and the second-stage supercharger 13 is an exhaust turbocharger 40. Since the energy of the exhaust turbocharger 40 comes from the exhaust gas of the engine 10, reducing the power consumed by the electric scroll supercharger 121 can reduce the energy consumed by the engine assembly 100 as a whole. By making the first-stage supercharger 12 an electric scroll supercharger 121, the first-stage supercharger 12 with a smaller power can be driven by electricity, and the second-stage supercharger 13 with a larger power can be driven by the exhaust gas of the engine 10, so that the exhaust gas energy discharged by the engine 10 can be fully utilized, and the energy consumption required by the engine assembly 100 can be reduced.

[0035] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The engine assembly 100 also includes a bypass line 19 and a bypass valve 20. The bypass line 19 is connected in parallel with the primary supercharger 12. The bypass valve 20 is arranged in the bypass line 19 to control the on-off of the bypass line 19. By making the engine assembly 100 include the bypass line 19 and making the bypass line 19 connected in parallel with the primary supercharger 12, part of the air can enter the intake line 11 through the bypass line 19, and finally enter the engine 10 through the secondary supercharger 13 to increase the flow of air entering the engine 10, so that the combustion of fuel in the engine 10 is more complete, and the working efficiency of the engine 10 is improved. By making the engine assembly 100 include the bypass valve 20, and making the bypass valve 20 arranged in the bypass line 19, the bypass valve 20 can control the on-off of the bypass line 19.

[0036] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The engine assembly 100 includes a motor 14, which is connected to an electric scroll supercharger 121 to drive the electric scroll supercharger 121 to work. In the related art, the supercharger 111 is driven by the exhaust gas of the engine 10 to move to perform supercharging. When the engine 10 is started, the speed of the engine 10 is coupled with the working condition of the supercharger 111, resulting in a slow start of the engine 10. By making the engine assembly 100 include a motor 14, and the motor 14 drives the electric scroll supercharger 121 to work, the working condition of the electric scroll supercharger 121 can be decoupled from the speed of the engine 10, and the electric scroll supercharger 121 can be directly started electrically to improve the response speed of the supercharger 111; and, compared with the mechanical supercharger 111 in the related art that can only work at medium and low speeds, the electric scroll supercharger 121 has a wider working power range and can provide a wider power range selection.

[0037] According to some embodiments of the present invention, referring to Figure 1-Figure 3The engine assembly 100 includes a battery 17, and the battery 17 is connected to the motor 14 to supply power to the motor 14. By making the engine assembly 100 include the battery 17, and making the battery 17 supply power to the motor 14, the motor 14 can be stably powered.

[0038] According to some embodiments of the present invention, referring to Figure 1-Figure 3 A circuit breaker 18 is connected between the motor 14 and the battery 17, and the circuit breaker 18 is used to control the on-off of the circuit between the battery 17 and the motor 14. By connecting the circuit breaker 18 between the motor 14 and the battery 17, and the circuit breaker 18 is used to control the on-off of the circuit between the battery 17 and the motor 14, the on-off of the motor 14 can be controlled separately according to the working conditions, and energy can be saved while ensuring that the amount of air entering the engine 10 is sufficient.

[0039] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The exhaust gas turbocharger 40 includes an exhaust gas turbine 41, a transmission shaft 42 and a turbocharger pressure plate 43. One end of the transmission shaft 42 is connected to the exhaust gas turbine 41, and the other end of the transmission shaft 42 is connected to the turbocharger pressure plate 43. The turbocharger pressure plate 43 is arranged in the intake pipe 11, and the exhaust gas turbine 41 is arranged in the exhaust pipe 22. The exhaust gas discharged from the exhaust pipe 22 is used to drive the exhaust gas turbine 41 to move. By arranging the exhaust gas turbine 41 in the exhaust pipe 22, the exhaust gas discharged from the exhaust pipe 22 can drive the exhaust gas turbine 41 to move, and the energy of the exhaust gas discharged from the exhaust pipe 22 can be fully utilized to improve the efficiency of the entire system; by connecting one end of the transmission shaft 42 to the exhaust gas turbine 41 and the other end of the transmission shaft 42 to the turbocharger pressure plate 43, the transmission shaft 42 can transmit the rotation of the exhaust gas turbine 41 to the turbocharger pressure plate 43, so that the pressure plate moves and compresses the air.

[0040] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The engine assembly 100 further includes an exhaust branch 50 and an exhaust valve 51. The exhaust branch 50 is connected in parallel with the exhaust turbine 41. The exhaust valve 51 is provided in the exhaust branch 50 and is used to control the on-off of the exhaust branch 50. By connecting the exhaust branch 50 in parallel with the exhaust turbine 41 and enabling the exhaust valve 51 to control the on-off of the exhaust branch 50, the on-off of the exhaust branch 50 can be controlled according to the actual operation of the engine 10, thereby reducing the risk of damage to the exhaust turbine 41.

[0041] For example, when the engine 10 rotates too fast, since the gas flow rate exhausted by the engine 10 is large, if all the exhaust gas is passed into the exhaust pipe 22, the exhaust gas turbine 41 may rotate too fast and be damaged. At this time, the exhaust valve 51 can be opened to allow part of the gas to be discharged through the exhaust branch 50, and the speed of the exhaust gas turbine 41 can be appropriately reduced to avoid damage to the exhaust gas turbine 41.

[0042] For example, when the load of the engine 10 drops sharply, the engine 10 does not need too much air intake and the exhaust valve 51 can be opened to allow the exhaust of the engine 10 to be discharged through the exhaust branch 50, thereby preventing the exhaust turbine 41 from continuously rotating to drive the turbocharger pressure plate 43 to rotate and introduce too much gas into the engine 10, thereby reducing the risk.

[0043] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The engine assembly 100 further includes an exhaust gas recirculation system 60 (EGR, Exhaust Gas Recirculation), the exhaust gas recirculation system 60 includes an exhaust gas recovery pipe 61 and an exhaust gas control valve 62, one end of the exhaust gas recovery pipe 61 is connected to the exhaust pipe 22, the other end of the exhaust gas recovery pipe 61 is connected to the intake pipe 11, and the exhaust gas control valve 62 is arranged on the exhaust gas recovery pipe 61. By making the engine assembly 100 include the exhaust gas recirculation system 60, the exhaust gas discharged from the engine 10 is recovered through the exhaust gas recovery pipe 61 and introduced into the engine 10 again, the temperature inside the engine 10 can be reduced, and the combustion rate can be appropriately reduced, reducing the knock phenomenon of the engine 10 due to overheating of the cylinder wall.

[0044] According to some embodiments of the present invention, referring to Figure 2 , the connection point between the exhaust gas recovery pipe 61 and the intake pipe 11 is located at the downstream side of the secondary supercharger 13. By making the connection point between the exhaust gas recovery pipe 61 and the intake pipe 11 located at the downstream side of the secondary supercharger 13, the pipe length of the exhaust gas recovery pipe 61 can be reduced, and the response of the exhaust gas recirculation system 60 can be faster. Therefore, under the premise of ensuring the safety and reliability of the exhaust gas recirculation system 60, the flow opening of the exhaust gas recovery pipe 61 can be appropriately increased, so that the gas flow in the exhaust gas recovery pipe 61 is larger, and the cooling effect inside the engine 10 and the effect of reducing the combustion rate are more sufficient.

[0045] According to some embodiments of the present invention, referring to Figure 2The exhaust gas turbocharger 40 includes an exhaust gas turbine 41, a transmission shaft 42 and a turbocharger pressure plate 43. One end of the transmission shaft 42 is connected to the exhaust gas turbine 41, and the other end of the transmission shaft 42 is connected to the turbocharger pressure plate 43. The turbocharger pressure plate 43 is arranged in the intake pipe 11, and the exhaust gas turbine 41 is arranged in the exhaust pipe 22. The exhaust gas discharged from the exhaust pipe 22 is used to drive the exhaust gas turbine 41 to move. The connection point between the exhaust gas recovery pipe 61 and the exhaust pipe 22 is located at the upstream side of the exhaust gas turbine 41. By arranging the exhaust gas turbine 41 in the exhaust pipe 22, the exhaust gas discharged from the exhaust pipe 22 can drive the exhaust gas turbine 41 to move, and the energy of the exhaust gas discharged from the exhaust pipe 22 can be fully utilized to improve the efficiency of the entire system; by connecting one end of the transmission shaft 42 to the exhaust gas turbine 41 and the other end of the transmission shaft 42 to the turbocharger pressure plate 43, the transmission shaft 42 can transmit the rotation of the exhaust gas turbine 41 to the turbocharger pressure plate 43, so that the pressure plate moves and compresses the air. By locating the connection point between the exhaust gas recovery pipe 61 and the exhaust pipe 22 on the upstream side of the exhaust turbine 41, the pipe length of the exhaust gas recovery pipe 61 can be reduced, and the exhaust gas recirculation system 60 can respond faster. Therefore, under the premise of ensuring the safety and reliability of the exhaust gas recirculation system 60, the flow opening of the exhaust gas recovery pipe 61 can be appropriately increased to make the gas flow in the exhaust gas recovery pipe 61 larger, so as to have a more sufficient cooling effect inside the engine 10 and the effect of reducing the combustion rate.

[0046] For example, the connection point between the exhaust gas recovery pipe 61 and the intake pipe 11 is located on the downstream side of the secondary turbocharger 13 , and the connection point between the exhaust gas recovery pipe 61 and the exhaust pipe 22 is located on the upstream side of the exhaust turbine 41 .

[0047] According to some embodiments of the present invention, referring to Figure 3 , the connection point between the exhaust gas recovery pipe 61 and the intake pipe 11 is located on the upstream side of the primary supercharger 12. Since the gas pressure at the upstream side of the primary supercharger 12 is relatively low, by making the connection point between the exhaust gas recovery pipe 61 and the intake pipe 11 located on the upstream side of the primary supercharger 12, the pressure difference between the gas in the exhaust gas recovery pipe 61 and the gas in the intake pipe 11 can be increased, and the impact caused by the pressure difference during fluctuation is relatively small, making the exhaust gas recirculation system 60 more stable.

[0048] According to some embodiments of the present invention, referring to Figure 3The exhaust turbocharger 40 includes an exhaust turbine 41, a drive shaft 42 and a turbocharger pressure plate 43. One end of the drive shaft 42 is connected to the exhaust turbine 41, and the other end of the drive shaft 42 is connected to the turbocharger pressure plate 43. The turbocharger pressure plate 43 is arranged in the intake pipe 11, and the exhaust turbine 41 is arranged in the exhaust pipe 22. The exhaust gas discharged from the exhaust pipe 22 is used to drive the exhaust turbine 41 to move. The connection point between the exhaust gas recovery pipe 61 and the exhaust pipe 22 is located on the downstream side of the exhaust turbine 41. By arranging the exhaust gas turbine 41 in the exhaust pipe 22, the exhaust gas discharged from the exhaust pipe 22 can drive the exhaust gas turbine 41 to move, thereby fully utilizing the energy of the exhaust gas discharged from the exhaust pipe 22 and improving the efficiency of the entire system; by connecting one end of the drive shaft 42 to the exhaust gas turbine 41 and the other end of the drive shaft 42 to the turbocharger pressure plate 43, the drive shaft 42 can transmit the rotation of the exhaust gas turbine 41 to the turbocharger pressure plate 43, so that the pressure plate moves and compresses the air.

[0049] For example, the connection point between the exhaust gas recovery pipe 61 and the intake pipe 11 is located on the upstream side of the first-stage supercharger 12, and the connection point between the exhaust gas recovery pipe 61 and the exhaust pipe 22 is located on the downstream side of the exhaust gas turbine 41. It is convenient to improve the exhaust gas recovery pipe 61 in the existing related technology and reduce the difficulty of pipeline design. Since the connection point between the exhaust gas recovery pipe 61 and the exhaust pipe 22 is located on the downstream side of the exhaust gas turbine 41, the exhaust gas pressure here is relatively smaller than the connection point between the exhaust gas recovery pipe 61 and the exhaust pipe 22 is located on the upstream side of the exhaust gas turbine 41. Therefore, the connection point between the exhaust gas recovery pipe 61 and the intake pipe 11 is located on the upstream side of the first-stage supercharger 12, which can more fully increase the pressure difference between the gas in the exhaust gas recovery pipe 61 and the gas in the intake pipe 11, so that the pressure difference has less impact when it fluctuates, making the exhaust gas recirculation system 60 more stable.

[0050] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The exhaust gas recirculation system 60 further includes a cooler 63, which is disposed in the exhaust gas recovery pipe 61. By making the exhaust gas recirculation system 60 further include a cooler 63, which is disposed in the exhaust gas recovery pipe 61, the temperature of the gas in the exhaust gas recovery pipe 61 can be reduced, so that after the gas in the exhaust gas recovery pipe 61 passes into the engine 10, the temperature of the inner wall of the engine 10 can be more fully reduced, thereby reducing the risk of knocking of the engine 10.

[0051] According to some embodiments of the present invention, referring to Figure 2 and Figure 3The exhaust gas recirculation system 60 further includes a filter 64, which is disposed in the exhaust gas recovery pipe 61. By making the exhaust gas recirculation system 60 further include a filter 64, which is disposed in the exhaust gas recovery pipe 61, the gas entering the engine 10 can be made cleaner, and dust can be prevented from entering the cylinder and the valve to cause wear.

[0052] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 , the filter element 64 is located on the upstream side of the exhaust control valve 62. By locating the filter element 64 on the upstream side of the exhaust control valve 62, the gas passing through the exhaust control valve 62 can be made cleaner, and dust in the gas can be prevented from clogging the exhaust control valve 62.

[0053] According to some embodiments of the present invention, referring to Figure 1-Figure 3 The engine assembly 100 further includes at least one intercooler 21, which is disposed in the air intake pipe 11, and the intercooler 21 is disposed between the primary supercharger 12 and the secondary supercharger 13, and / or the intercooler 21 is disposed on the downstream side of the secondary supercharger 13. By making the engine assembly 100 include at least one intercooler 21, the increase in air temperature caused by the supercharger 111 compressing air can be alleviated, a larger pressure ratio can be obtained, and the power of the engine 10 can be further improved.

[0054] The vehicle according to the second embodiment of the present invention comprises: the engine assembly 100 according to the first embodiment of the present invention.

[0055] For example, the vehicle is a hybrid vehicle.

[0056] In the related art, directly using the vortex supercharger 111 to replace the low-pressure supercharger requires solving the vibration effect of the eccentric shaft on the crankshaft and belt. The four-cylinder engine usually needs to design an additional balance shaft, and the three-cylinder engine needs to redesign the dynamic balance. The sufficient power supply of the hybrid vehicle provides conditions for the electrification of the vortex supercharger 111. The vortex supercharger 111 is completely separated from the crankshaft of the engine 10, and there is no need to design a dynamic balance in the related art.

[0057] The vehicle according to the embodiment of the present invention, by including the engine assembly 100 according to the first aspect of the embodiment of the present invention, can provide air more fully to the interior of the engine 10, thereby improving the response of the engine 10 when the power changes suddenly; achieving more efficient supercharging can improve the mechanical efficiency of the system; and can fully recover the kinetic energy in the exhaust gas of the engine 10, thereby improving the efficiency of the entire system.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0060] In the description of the present invention, "plurality" means two or more.

[0061] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0062] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 representation of the above terms does 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.

[0064] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An engine component, characterized in that: include: An engine, wherein the engine is connected to an intake pipe and an exhaust pipe; A primary supercharger and a secondary supercharger are arranged in series in the air intake pipeline, and in the flow direction of the airflow in the air intake pipeline, the secondary supercharger is located at the downstream side of the primary supercharger; Among them, one of the primary supercharger and the secondary supercharger is an electric scroll supercharger, and the other is an exhaust turbocharger. The exhaust pipe is connected to the exhaust turbocharger, and the exhaust gas discharged from the exhaust pipe is used to drive the exhaust turbocharger to work.

2. The engine assembly according to claim 1, characterized in that The first-stage supercharger is an electric scroll supercharger, and the second-stage supercharger is an exhaust gas turbocharger.

3. The engine assembly according to claim 2, characterized in that The engine assembly further comprises a bypass pipeline and a bypass valve. The bypass pipeline is connected in parallel with the first-stage supercharger. The bypass valve is arranged on the bypass pipeline to control the on-off of the bypass pipeline.

4. The engine assembly according to claim 1, characterized in that The engine assembly includes a motor, which is connected to the electric scroll supercharger to drive the electric scroll supercharger to work.

5. The engine assembly according to claim 4, characterized in that The engine assembly includes a battery connected to the motor for supplying power to the motor.

6. The engine assembly according to claim 5, characterized in that A circuit breaker is connected between the motor and the battery, and the circuit breaker is used to control the on and off of the circuit between the battery and the motor.

7. The engine assembly according to claim 1, characterized in that The exhaust gas turbocharger includes an exhaust gas turbine, a drive shaft and a turbocharger pressure plate, one end of the drive shaft is connected to the exhaust gas turbine, and the other end of the drive shaft is connected to the turbocharger pressure plate, the turbocharger pressure plate is arranged in the intake pipe, and the exhaust gas turbine is arranged in the exhaust pipe, and the exhaust gas discharged from the exhaust pipe is used to drive the exhaust gas turbine to move.

8. The engine assembly according to claim 7, characterized in that The engine component also includes an exhaust branch and an exhaust valve. The exhaust branch is connected in parallel with the exhaust gas turbine. The exhaust valve is arranged on the exhaust branch and is used to control the on-off of the exhaust branch.

9. The engine assembly according to any one of claims 1 to 8, characterized in that: The engine assembly also includes an exhaust gas recirculation system, which includes an exhaust gas recovery pipe and an exhaust gas control valve. One end of the exhaust gas recovery pipe is connected to the exhaust pipe, and the other end of the exhaust gas recovery pipe is connected to the intake pipe. The exhaust gas control valve is arranged on the exhaust gas recovery pipe.

10. The engine assembly according to claim 9, characterized in that The connection point between the exhaust gas recovery pipe and the air intake pipeline is located at the downstream side of the secondary supercharger.

11. The engine assembly according to claim 10, characterized in that The exhaust turbocharger includes an exhaust gas turbine, a drive shaft and a turbocharger pressure plate, one end of the drive shaft is connected to the exhaust gas turbine, and the other end of the drive shaft is connected to the turbocharger pressure plate, the turbocharger pressure plate is arranged in the intake pipe, and the exhaust gas turbine is arranged in the exhaust pipe. The exhaust gas discharged from the exhaust pipe is used to drive the exhaust gas turbine to move, and the connection point between the exhaust gas recovery pipe and the exhaust pipe is located on the upstream side of the exhaust gas turbine.

12. The engine assembly according to claim 9, characterized in that The connection point between the exhaust gas recovery pipe and the air intake pipeline is located at the upstream side of the first-stage supercharger.

13. The engine assembly according to claim 12, characterized in that The exhaust turbocharger includes an exhaust gas turbine, a drive shaft and a turbocharger pressure plate, one end of the drive shaft is connected to the exhaust gas turbine, and the other end of the drive shaft is connected to the turbocharger pressure plate, the turbocharger pressure plate is arranged in the intake pipe, and the exhaust gas turbine is arranged in the exhaust pipe. The exhaust gas discharged from the exhaust pipe is used to drive the exhaust gas turbine to move, and the connection point between the exhaust gas recovery pipe and the exhaust pipe is located on the downstream side of the exhaust gas turbine.

14. The engine assembly according to claim 9, characterized in that The exhaust gas recirculation system further includes a cooler, which is arranged on the exhaust gas recovery pipe.

15. The engine assembly according to claim 9, characterized in that The exhaust gas recirculation system further includes a filter element, and the filter element is arranged on the exhaust gas recovery pipe.

16. The engine assembly according to claim 15, characterized in that The filter element is located on the upstream side of the exhaust gas control valve.

17. A vehicle, characterized in that: include: An engine assembly according to any one of claims 1 to 16.

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