Engine and vehicle

Abstract

The present invention discloses an engine and a vehicle, wherein the engine comprises: a body group, wherein the body group is provided with a plurality of pre-combustion chambers and a plurality of main combustion chambers, wherein the side of the body group close to the intake pipe in the width direction is the intake side and the side of the body group close to the exhaust pipe in the width direction is the exhaust side; an oil pump, wherein the oil pump is provided in the body group, and the oil pump is provided adjacent to the exhaust side compared to the intake side; a plurality of pre-combustion chamber ignition coils, wherein the plurality of pre-combustion chamber ignition coils are provided in the body group, wherein the plurality of pre-combustion chamber ignition coils are provided at intervals in the length direction of the body group and are located between the oil pump and the intake side; and a plurality of main combustion chamber ignition coils, wherein the plurality of main combustion chamber ignition coils are provided in the body group, wherein the plurality of main combustion chamber ignition coils are provided at intervals in the length direction of the body group and are located between the plurality of pre-combustion chamber ignition coils and the intake side. By reasonably providing the pre-combustion chamber ignition coils and the main combustion chamber ignition coils, the arrangement of the engine components is made more compact, and the arrangement difficulty of the whole machine in the whole vehicle can be effectively reduced.

Description

Technical Field

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

[0002] In recent years, while my country's automobile industry has developed rapidly, the fossil energy crisis and environmental pollution caused by fossil energy have also become a huge burden on the country. In order to alleviate the energy crisis and reduce environmental pollution, the country has put forward increasingly strict regulatory requirements on automobile engine emissions.

[0003] In order to meet increasingly stringent emission regulations, gasoline engines have proposed pre-combustion chamber technology, that is, a small pre-combustion chamber is arranged between the spark plug and the traditional combustion chamber (hereinafter referred to as the main combustion chamber), and the engine controls the spark plug to ignite the mixture in the pre-combustion chamber first, and the ignited mixture in the pre-combustion chamber uses its own high temperature and high pressure to be emitted from multiple small holes reserved at the bottom of the pre-combustion chamber, thereby igniting the mixture in the main combustion chamber; in traditional spark plug ignition, a very small fire core is first formed between the two electrodes of the spark plug, and the fire core gradually spreads to the entire combustion chamber, and the energy of the multiple high-temperature and high-pressure gases ejected from the pre-combustion chamber is much higher than the fire core energy generated by the spark plug, so the combustion speed of the mixture in the main combustion chamber ignited by the pre-combustion chamber is faster than the combustion speed of the mixture ignited by the traditional spark plug, and the mixture burns more fully.

[0004] In the related technology, due to the cold start and low speed and low load conditions of the pre-combustion chamber engine, the combustion exhaust gas in the pre-combustion chamber is not easy to be discharged with the airflow, and the engine may misfire. Usually, a set of ignition coils and spark plugs are added to the main combustion chamber. In some special engine working conditions, the ignition coils and spark plugs in the main combustion chamber are used for ignition, or the main combustion chamber and the pre-combustion chamber are ignited at the same time to prevent the engine from misfire. In this case, the engine uses two sets of ignition systems, plus an overhead injector. Affected by the space on the top surface of the overall cylinder head cover, it is very difficult to arrange the two sets of ignition coils, the fuel rail assembly, and the high-pressure oil pipe. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an engine, in which the arrangement of the engine components is more compact, which can effectively reduce the difficulty of arranging the whole engine in the whole vehicle.

[0006] The present invention also provides a vehicle.

[0007] According to an embodiment of the first aspect of the present invention, the engine comprises: a body group, the body group is provided with a plurality of pre-combustion chambers and a plurality of main combustion chambers, the side of the body group close to the intake pipe in the width direction is the intake side and the side close to the exhaust pipe in the width direction is the exhaust side; an oil pump, the oil pump is arranged on the body group, and compared with the intake side, the oil pump is arranged adjacent to the exhaust side; a plurality of pre-combustion chamber ignition coils, the plurality of pre-combustion chamber ignition coils are arranged on the body group and correspond to the plurality of pre-combustion chambers one-to-one, respectively, the plurality of pre-combustion chamber ignition coils are arranged at intervals in the length direction of the body group and are located between the oil pump and the intake side; a plurality of main combustion chamber ignition coils, the plurality of main combustion chamber ignition coils are arranged on the body group and correspond to the plurality of main combustion chambers one-to-one, respectively, the plurality of main combustion chamber ignition coils are arranged at intervals in the length direction of the body group and are located between the plurality of pre-combustion chamber ignition coils and the intake side.

[0008] The engine according to the embodiment of the present invention can prevent the engine from misfiring by providing the pre-combustion chamber ignition coil and the main combustion chamber ignition coil. In addition, the oil rail assembly and the oil pipe assembly do not need to be removed each time the spark plug is removed or assembled. This completely avoids the problem of the injector sealing rubber ring having a reduced life due to the oil rail assembly being removed or assembled many times, resulting in the rubber ring being poorly sealed and leaking oil after being damaged, and causing a fire hazard. In addition, the arrangement of the engine components is more compact, which can effectively reduce the difficulty of arranging the entire machine in the entire vehicle.

[0009] According to some embodiments of the present invention, the plurality of pre-combustion chamber ignition coils and the plurality of main combustion chamber ignition coils are at least partially staggered in the length direction of the engine body group.

[0010] According to some embodiments of the present invention, the invention further comprises: an oil pipe assembly, wherein the oil pipe assembly is connected to the oil pump and avoids the pre-combustion chamber ignition coil and the main combustion chamber ignition coil.

[0011] According to some embodiments of the present invention, the oil pipe assembly is adjacent to the rear end of the length direction of the engine body group compared to the front end of the length direction of the engine body group, and the oil pipe assembly is bent to sequentially pass through the gap between two adjacent pre-combustion chamber ignition coils located at the rear end and the gap between the main combustion chamber ignition coil located at the rear end and the adjacent pre-combustion chamber ignition coil.

[0012] According to some embodiments of the present invention, in the height direction of the engine body group, the top of the pre-combustion chamber ignition coil is inclined toward the exhaust side; and / or in the height direction of the engine body group, the top of the main combustion chamber ignition coil is inclined toward the intake side.

[0013] According to some embodiments of the present invention, it further includes: a fuel rail assembly, which is arranged in the engine body group and connected to the plurality of main combustion chambers, and the fuel rail assembly is located on a side of the plurality of main combustion chamber ignition coils close to the intake side.

[0014] According to some embodiments of the present invention, the main combustion chamber ignition coil and the pre-combustion chamber ignition coil both include: a high-voltage connecting rod and a main body, the high-voltage connecting rod is plugged into the body group, and the main body is arranged on the top of the high-voltage connecting rod; the oil rail assembly includes: an oil rail and a plurality of injectors, the plurality of injectors are respectively connected to the oil rail, the injectors are respectively arranged between the lower ends of the high-voltage connecting rods of two adjacent main combustion chamber ignition coils, and the oil rail is located on the side of the upper end of the high-voltage connecting rod close to the intake side.

[0015] According to some embodiments of the present invention, an injector plug is provided on the top of the injector, and the injector plug is arranged toward the rear end in the length direction of the body group and has a deflection angle α1 toward the exhaust side, and α1 satisfies the relationship: 30°≤α1≤60°.

[0016] According to some embodiments of the present invention, the main combustion chamber ignition coil and the pre-combustion chamber ignition coil both include: a mounting bushing, which is arranged on the main body, and the mounting bushing of the main combustion chamber ignition coil is arranged on a side away from the oil rail.

[0017] According to some embodiments of the present invention, the main combustion chamber ignition coil and the pre-combustion chamber ignition coil both include: an ignition coil plug-in, which is arranged at the top of the main body; in the length direction of the body group, the ignition coil plug-in of the main combustion chamber ignition coil is arranged toward the front end or the rear end in the length direction and the deflection angle toward the intake side or the exhaust side is α2, α2 satisfies the relationship: 0°≤α2≤30°; and / or in the length direction of the body group, the ignition coil plug-in of the pre-combustion chamber ignition coil is arranged toward the front end in the length direction and the deflection angle toward the exhaust side is α3, α3 satisfies the relationship: 15°≤α3≤45°.

[0018] According to some embodiments of the present invention, the fuel rail assembly further includes: a rail pressure sensor, which is arranged on one side of the fuel rail. In the height direction of the body group, the deflection angle of the rail pressure sensor toward the intake side is α4, and α4 satisfies the relationship: 30°≤α4≤60°.

[0019] A vehicle according to an embodiment of the second aspect of the present invention comprises the engine of the above embodiment.

[0020] 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

[0021] 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:

[0022] Figure 1 is a top view of an engine according to an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of an engine according to an embodiment of the present invention;

[0024] Figure 3 Schematic diagram of the installation of the pre-combustion chamber ignition coil and the main combustion chamber ignition coil according to an embodiment of the present invention.

[0025] Reference numerals:

[0026] 100. Engine;

[0027] 10. Engine body; 11. Intake side; 12. Exhaust side;

[0028] 20. Oil pump;

[0029] 30. Pre-combustion chamber ignition coil; 31. High-voltage connecting rod; 32. Main body; 33. Mounting bushing; 34. Ignition coil plug-in;

[0030] 40. Ignition coil of main combustion chamber;

[0031] 50. Fuel rail assembly; 51. Fuel rail; 52. Fuel injector; 53. Fuel injector plug-in; 54. Rail pressure sensor;

[0032] 60. Oil pipe assembly; 61. Oil inlet; 62. Oil outlet; 63. Arc segment; 64. Straight segment. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0034] Reference below Figure 1-Figure 3 The engine 100 according to the embodiment of the present invention is described. The embodiment of the present invention also provides a vehicle having the engine 100 .

[0035] Combination Figure 1-Figure 3As shown, the engine 100 of the embodiment of the present invention includes: a body group 10, an oil pump 20, a plurality of pre-combustion chamber ignition coils 30, a plurality of main combustion chamber ignition coils 40, an oil rail assembly 50 and an oil pipe assembly 60. The body group 10 is provided with a plurality of pre-combustion chambers and a plurality of main combustion chambers. One side of the body group 10 in the width direction is the intake side 11. And the other side is the exhaust side 12. The oil pump 20 is arranged on the body group 10. Compared with the intake side 11, the oil pump 20 is arranged adjacent to the exhaust side 12. Among them, the oil pump 20 can extract fuel and supply it to the cylinder, so as to realize the normal operation of the engine 100.

[0036] Further, a side close to the intake pipe in the width direction is an intake side 11 , and a side close to the exhaust pipe is an exhaust side 12 .

[0037] In addition, the pre-combustion chamber can be connected to the main combustion chamber through a through hole, and the combustible mixture enters the pre-combustion chamber during the intake stroke and is ignited by the spark plug. The flame front formed after the mixture is ignited flows out from the through hole on the surface of the pre-combustion chamber and ignites the combustible mixture in the main combustion chamber. Among them, multiple ignition positions can make the mixture burn faster and more fully. In addition, the through holes set on the bottom surface of the pre-combustion chamber are not sprayed vertically downward, but sprayed obliquely downward, so that the active radicals of the flame generated by the combustion in the pre-combustion chamber can be sprayed into the main combustion chamber evenly and quickly from multiple angles in a three-dimensional dimension, thereby improving the combustion efficiency.

[0038] A plurality of pre-combustion chamber ignition coils 30 are arranged on the engine block 10 and correspond to the plurality of pre-combustion chambers one by one, the plurality of pre-combustion chamber ignition coils 30 are arranged at intervals in the length direction of the engine block 10, and the plurality of pre-combustion chamber ignition coils 30 are located between the oil pump 20 and the intake side 11, a plurality of main combustion chamber ignition coils 40 are arranged on the engine block 10, and the plurality of main combustion chamber ignition coils 40 correspond to the plurality of main combustion chambers one by one, the plurality of main combustion chamber ignition coils 40 are arranged at intervals in the length direction of the engine block 10, and the plurality of main combustion chamber ignition coils 40 are located between the plurality of pre-combustion chamber ignition coils 30 and the intake side 11. Among them, as the automobile gasoline engine 100 develops in the direction of high speed, high compression ratio, high power, low fuel consumption and low emission, the core components of the ignition device are the ignition coil and the switch device, and by increasing the energy of the ignition coil, the spark plug can generate a spark of sufficient energy, thereby achieving full combustion of the mixture inside the engine 100. Also, when the engine 100 is cold-started or operating at low speed and low load, the combustion exhaust gas in the pre-combustion chamber is not easily discharged with the movement of the airflow, and the engine 100 may misfire. By using the main combustion chamber ignition coil 40 in the main combustion chamber, spark plug ignition, or simultaneous ignition of the main combustion chamber and the pre-combustion chamber, the engine 100 can be prevented from misfire.

[0039] like Figure 1-Figure 3As shown, the oil rail assembly 50 is arranged on the engine block 10, and the oil rail assembly 50 is connected to a plurality of main combustion chambers, the oil rail assembly 50 is located on a side of a plurality of main combustion chamber ignition coils 40 close to the intake side 11, and the oil pipe assembly 60 is connected between the oil pump 20 and the oil rail assembly 50, and the oil pipe assembly 60 avoids the pre-combustion chamber ignition coil 30 and the main combustion chamber ignition coil 40. That is, by arranging the oil rail assembly 50 and the oil pipe assembly 60, the oil pipe assembly 60 is arranged between the oil rail assembly 50 and the oil pump 20, so that the main combustion chamber and the pre-combustion chamber are supplied with oil through the oil rail assembly 50 and the oil pipe assembly 60, thereby realizing the normal operation of the engine 100.

[0040] Furthermore, the oil pipe assembly 60 passes through the pre-combustion chamber ignition coil 30 and the main combustion chamber ignition coil 40 , which can facilitate the arrangement of the oil pipe assembly 60 and the disassembly and assembly of the pre-combustion chamber ignition coil 30 and the main combustion chamber ignition coil 40 .

[0041] In addition, the oil pump 20 is a high-pressure oil pump 20 , which is arranged in an overhead manner, and the position of the oil inlet 61 is determined. When the oil pipe assembly 60 is arranged, the connection with the oil rail 51 can be minimized.

[0042] Therefore, by providing the pre-combustion chamber ignition coil 30 and the main combustion chamber ignition coil 40, not only can the engine 100 be prevented from misfiring, but also the oil rail assembly 50 and the oil pipe assembly 60 do not need to be removed each time the spark plug is disassembled and assembled, which completely avoids the problem of the life of the sealing rubber ring of the injector 52 being reduced due to repeated disassembly and assembly of the oil rail assembly 50, resulting in the rubber ring being poorly sealed and leaking oil after being damaged, and causing fire hazards. In addition, the arrangement of the various components of the engine 100 is made more compact, which can effectively reduce the difficulty of arranging the entire machine in the entire vehicle.

[0043] Among them, combined Figure 1 and Figure 2 As shown, a plurality of pre-combustion chamber ignition coils 30 and a plurality of main combustion chamber ignition coils 40 are at least partially staggered in the length direction of the engine body group 10. That is, the pre-combustion chamber ignition coils 30 and the main combustion chamber ignition coils 40 are staggered and spaced in sequence, and because the pre-combustion chamber ignition coils 30 and the main combustion chamber ignition coils 40 are spaced in the width direction, a triangular structure can be formed between one pre-combustion chamber ignition coil 30 and two main combustion chamber ignition coils 40, which can facilitate the arrangement of the main combustion chamber ignition coils 40 and the pre-combustion chamber ignition coils 30 on the one hand, and can facilitate the installation of other components on the other hand, for example, it is convenient to arrange the spark plug, the injector 52 and other structures.

[0044] Reference Figure 1 and Figure 2As shown, compared with the front end of the length direction of the engine group 10, the oil pipe assembly 60 is adjacent to the rear end of the length direction of the engine group 10, and the oil pipe assembly 60 is bent to sequentially pass through the gap between the two adjacent pre-combustion chamber ignition coils 30 located at the rear end and the gap between the main combustion chamber ignition coil 40 located at the rear end and the adjacent pre-combustion chamber ignition coil 30. In other words, the oil pipe assembly 60 is arranged to pass through the gap between the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 at the rear end, so as to prevent the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 from being pulled out of the mounting hole and being blocked by the oil pipe assembly 60. In addition, each time the spark plug is disassembled, the oil rail assembly 50 and the oil pipe assembly 60 do not need to be removed, which completely avoids the fire hazard caused by the multiple disassembly of the oil rail assembly 50, which leads to the reduction of the service life of the injector 52 sealing rubber ring, resulting in poor sealing of the rubber ring, oil leakage after damage.

[0045] Refer to 1 and Figure 3 As shown, the oil pipe assembly 60 includes: an arc segment 63 and a straight segment 64, wherein the arc segment 63 penetrates the gap between the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30, and an oil inlet 61 is provided at one end of the arc segment 63, and the oil inlet 61 is connected to the oil pump 20. In addition, the straight segment 64 is connected to the side of the arc segment 63 away from the oil pump 20, and the bending radius between the straight segment 64 and the arc segment 63 is more than 2 times the pipe diameter. The length of the straight segment 64 is greater than 30 mm.

[0046] And, refer to Figure 3 As shown, in the height direction of the engine block 10, the top of the pre-combustion chamber ignition coil 30 is tilted toward the exhaust side 12. On the one hand, the top of the pre-combustion chamber ignition coil 30 is away from the main combustion chamber ignition coil 40 to prevent the difficulty of plugging the wiring harness plug-in. On the other hand, the space between the pre-combustion chamber ignition coil 30 and the main combustion chamber ignition coil 40 can be increased to facilitate the arrangement of other components.

[0047] Likewise, Figure 3 As shown, in the height direction of the engine block 10, the top of the main combustion chamber ignition coil 40 is tilted toward the air intake side 11. On the one hand, the top of the main combustion chamber ignition coil 40 is away from the pre-combustion chamber ignition coil 30 to prevent the difficulty of plugging the wiring harness plug-in. On the other hand, the space between the pre-combustion chamber ignition coil 30 and the main combustion chamber ignition coil 40 can be increased to facilitate the arrangement of other components.

[0048] In addition, if Figure 3As shown, the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 both include: a high-voltage connecting rod 31 and a main body 32. The high-voltage connecting rod 31 is plugged into the engine block 10, and the main body 32 is arranged at the top of the high-voltage connecting rod 31. In addition, the oil rail assembly 50 includes: an oil rail 51 and a plurality of injectors 52. The plurality of injectors 52 are respectively connected to the oil rail 51. The injectors 52 are respectively arranged between the lower ends of the high-voltage connecting rods 31 of two adjacent main combustion chamber ignition coils 40. The oil rail 51 is located on the side of the upper end of the high-voltage connecting rod 31 close to the intake side 11. In other words, the oil rail assembly 50 is arranged as a whole on the side of the main combustion chamber ignition coil 40 and away from the pre-combustion chamber ignition coil 30, and the height is lower than the top of the main combustion chamber ignition coil 40, and extends toward the intake side 11, in order to be away from the axial extension direction of the spark plug mounting hole, so as to avoid interference between the tool and the high-voltage oil rail 51 when the spark plug is subsequently disassembled and installed, resulting in difficulties in maintenance and repair and increased costs. In addition, the fuel injector 52 is located at the bottom of the high-voltage connecting rod 31, so that the main combustion chamber ignition coil 40 and the main body 32 of the pre-combustion chamber ignition coil 30 can be avoided, thereby facilitating the arrangement of the fuel injector 52.

[0049] Furthermore, the fuel injector 52 is a top-mounted fuel injector 52 , and the fuel injector 52 is disposed between two adjacent main combustion chamber ignition coils 40 , thereby facilitating the arrangement of the fuel injector 52 .

[0050] The top of the fuel injector 52 is provided with a fuel injector plug-in 53, which is arranged toward the rear end of the length direction of the engine block 10 and has a deflection angle of α1 toward the exhaust side 12, and α1 satisfies the relationship: 30°≤α1≤60°. In this way, the fuel injector plug-in 53 is deflected relative to the exhaust side 12, which can meet the operating space of the fuel injector 52 wiring harness plug-in and facilitate the plugging of the fuel injector 52. Among them, if α1<30°, the angle between the fuel injector 52 and the exhaust side 12 is small, the fuel injector 52 cannot avoid the main combustion chamber ignition coil 40 well, and the arrangement of the fuel injector 52 is inconvenient. And if α1>60°, the angle between the fuel injector 52 and the exhaust side 12 is large, the fuel injector 52 cannot avoid the oil rail 51 well, and the arrangement of the fuel injector 52 is also inconvenient.

[0051] In addition, if Figure 1 and Figure 2 As shown, the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 both include: a mounting bushing 33, the mounting bushing 33 is arranged on the main body 32, and the mounting bushing 33 of the main combustion chamber ignition coil 40 is arranged on the side away from the oil rail 51. The mounting bushing 33 is used to install the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 on the engine body assembly 10. In addition, the mounting bushing 33 of the main combustion chamber ignition coil 40 is arranged on the side away from the oil rail 51, which can facilitate the operation of the installation tool. Similarly, the mounting bushing 33 of the pre-combustion chamber ignition coil 30 is arranged on the side away from the main combustion chamber ignition coil 40.

[0052] And, if Figure 1 and Figure 2 As shown, the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 both include an ignition coil plug-in 34 , which is disposed on the top of the main body 32 .

[0053] In addition, in the length direction of the engine block 10, the ignition coil plug 34 of the main combustion chamber ignition coil 40 is arranged toward the front end or rear end in the length direction, and the deflection angle of the ignition coil plug 34 toward the intake side 11 or the exhaust side 12 is α2, and α2 satisfies the relationship: 0°≤α2≤30°. In this way, by deflecting the main combustion chamber ignition coil 40, the arrangement of the main combustion chamber ignition coil 40 can be facilitated, thereby facilitating the overall structural arrangement of the engine 100.

[0054] And, in the length direction of the engine body group 10, the ignition coil plug-in 34 of the pre-combustion chamber ignition coil 30 is arranged toward the front end in the length direction and the deflection angle toward the exhaust side 12 is α3, and α3 satisfies the relationship: 15°≤α3≤45°. Such arrangement, on the one hand, is far away from the main combustion chamber ignition coil 40 to prevent the difficulty of plugging in the wiring harness plug-in, and can also arrange the wiring harness as far away from the high temperature area of ​​the exhaust pipe as possible to prevent the risk of fire.

[0055] The oil rail assembly 50 also includes: a rail pressure sensor 54, which is arranged on the side of the oil rail 51 away from the main combustion chamber ignition coil 40. In the height direction of the engine body group 10, the deflection angle of the rail pressure sensor 54 toward the intake side 11 is α4, and α4 satisfies the relationship: 30°≤α4≤60°. In other words, the rail pressure sensor 54 needs to deviate from the main combustion chamber ignition coil 40, so that the rail pressure sensor 54 can avoid affecting the arrangement of the main combustion chamber ignition coil 40. In addition, the oil outlet 62 is arranged on the same side of the rail pressure sensor 54, and the oil outlet 62 is kept parallel to the rail pressure sensor 54, so that the oil rail assembly 50 can be arranged reasonably, avoiding the oil rail assembly 50 affecting the arrangement of the main combustion chamber ignition coil 40, and the integrity of the oil rail assembly 50 is better.

[0056] In addition, the rail pressure sensor 54 can be adjusted arbitrarily in the axial direction of the oil rail assembly 50 in combination with the actual layout of the whole machine, but it should be noted that the distance from the main combustion chamber ignition coil 40 is more than 2 mm. In this way, the rail pressure sensor 54 can be set between the two main combustion chamber ignition coils 40, which can avoid the main combustion chamber ignition coil 40.

[0057] Furthermore, the rail pressure sensor 54 is disposed at the rear end of the fuel rail 51 , so that the rail pressure sensor 54 can measure the fuel pressure at the rear end of the fuel rail 51 , and thus can measure the lowest value of the oil pressure in the entire fuel rail 51 , thereby facilitating the adjustment of the oil pressure in the fuel rail 51 at any time.

[0058] In addition, the oil pump 20, the oil pipe assembly 60, the oil rail 51, the fuel injector 52, the electronic control unit (ECU) and the rail pressure sensor 54 can form a common rail injection fuel supply system. Each fuel injector 52 in the system is connected to the fuel rail 51 through its own high-pressure oil pipe, and the fuel rail 51 plays a hydraulic pressure storage role for the fuel injector 52. When working, the oil pump 20 delivers fuel to the fuel rail 51 at high pressure. The oil pump 20, the rail pressure sensor 54 and the ECU form a closed loop to achieve precise control of the oil pressure in the fuel rail 51, which completely changes the phenomenon that the fuel supply pressure changes with the speed of the engine 100. This setting completely separates the injection timing from the fuel metering, and the injection pressure and the injection process are timely controlled by the ECU. The injection pressure, the injection start point and the duration of each cylinder can be adjusted according to the working condition of the engine 100, so as to pursue the best control point of the injection.

[0059] In addition, due to the presence of the oil rail 51, the injector 52 can achieve a very high injection pressure and can realize pre-injection of fuel, thereby facilitating the ignition of the pre-combustion chamber. In a complete stroke, the ignited mixture in the pre-combustion chamber utilizes its own high temperature and high pressure to be emitted through multiple small holes reserved at the bottom of the pre-combustion chamber, thereby igniting the mixture in the main combustion chamber.

[0060] According to one embodiment of the present invention, six cylinders may be provided on the engine block 10, that is, six main combustion chamber ignition coils 40 and six pre-combustion chamber ignition coils 30 are plugged into the engine block 10, so that a one-to-one correspondence between the cylinders and the main combustion chamber ignition coils 40 and the pre-combustion chamber ignition coils 30 can be achieved. In other words, the engine 100 is a single ignition mode.

[0061] Among them, the individual ignition method is to allocate an ignition coil to each cylinder, and the ignition coil is directly installed on the top of the spark plug, which also eliminates the high-voltage wire. This ignition method achieves precise ignition through a camshaft sensor or by monitoring cylinder compression, and it is suitable for engines 100 with any number of cylinders. Because the spark plug ignition coil combination can be installed in the middle of the double overhead camshaft, the gap space is fully utilized. Since the distributor and high-voltage wire are eliminated, the energy conduction loss and leakage loss are extremely small, there is no mechanical wear, and the ignition coil and spark plug of each cylinder are assembled together and wrapped with metal, which greatly reduces electromagnetic interference and can ensure the normal operation of the electronic control system of the engine 100.

[0062] As shown in the figure, the first layer is the injector 52 and the lower end of the ignition coil high-voltage connecting rod 31, the second layer is the oil rail 51 and the upper end of the ignition coil high-voltage connecting rod 31, the third layer is the ignition coil body 32, the rail pressure sensor 54, and the oil outlet 62, and the fourth layer is the high-pressure oil pipe assembly 60.

[0063] A vehicle according to an embodiment of the second aspect of the present invention comprises the engine 100 of the above embodiment.

[0064] 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.

[0065] 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.

[0066] 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, characterized in that: include: A machine body group, wherein the machine body group is provided with a plurality of pre-combustion chambers and a plurality of main combustion chambers, wherein a side of the machine body group close to the air intake pipe in the width direction is an air intake side and a side of the machine body group close to the exhaust pipe in the width direction is an exhaust side; An oil pump, the oil pump being disposed on the engine block, and being disposed closer to the exhaust side than to the intake side; A plurality of pre-combustion chamber ignition coils, the plurality of pre-combustion chamber ignition coils are arranged on the engine block and correspond to the plurality of pre-combustion chambers one by one, the plurality of pre-combustion chamber ignition coils are arranged at intervals in the length direction of the engine block and are located between the oil pump and the intake side; A plurality of main combustion chamber ignition coils, the plurality of main combustion chamber ignition coils are arranged on the engine body group and correspond to the plurality of main combustion chambers one by one, the plurality of main combustion chamber ignition coils are arranged at intervals in the length direction of the engine body group and are located between the plurality of pre-combustion chamber ignition coils and the intake side; A fuel rail assembly, the fuel rail assembly is arranged on the engine block and connected to the plurality of main combustion chambers, the fuel rail assembly is located on a side of the plurality of main combustion chamber ignition coils close to the intake side, the fuel rail assembly further comprising: a rail pressure sensor, the rail pressure sensor is arranged on one side of the fuel rail, in the height direction of the engine block, the deflection angle of the rail pressure sensor toward the intake side is α4, α4 satisfies the relationship: 30°≤α4≤60°; and, The main combustion chamber ignition coil and the pre-combustion chamber ignition coil both include: a high-voltage connecting rod and a main body, the high-voltage connecting rod is plugged into the body group, the main body is arranged on the top of the high-voltage connecting rod, the oil rail assembly includes: an oil rail and a plurality of injectors, the plurality of injectors are respectively connected to the oil rail, the injectors are respectively arranged between the lower ends of the high-voltage connecting rods of two adjacent main combustion chamber ignition coils, and the oil rail is located on the side of the upper end of the high-voltage connecting rod close to the intake side.

2. The engine according to claim 1, characterized in that The plurality of pre-combustion chamber ignition coils and the plurality of main combustion chamber ignition coils are at least partially staggered in the length direction of the engine body group.

3. The engine according to claim 1, characterized in that Also includes: An oil pipe assembly is connected to the oil pump and avoids the pre-combustion chamber ignition coil and the main combustion chamber ignition coil.

4. The engine according to claim 3, characterized in that Compared with the front end of the engine body group in the length direction, the oil pipe assembly is adjacent to the rear end of the engine body group in the length direction, and the oil pipe assembly is bent to sequentially pass through the gap between the two adjacent pre-combustion chamber ignition coils located at the rear end and the gap between the main combustion chamber ignition coil located at the rear end and the adjacent pre-combustion chamber ignition coil.

5. The engine according to claim 1, characterized in that In the height direction of the engine block, the top of the pre-combustion chamber ignition coil is tilted toward the exhaust side; and / or In the height direction of the engine body group, the top of the main combustion chamber ignition coil is inclined toward the intake side.

6. The engine according to claim 1, characterized in that The top of the injector is provided with an injector plug-in, which is arranged toward the rear end of the length direction of the engine block and has a deflection angle α1 toward the exhaust side, and α1 satisfies the relationship: 30°≤α1≤60°.

7. The engine according to claim 1, characterized in that The main combustion chamber ignition coil and the pre-combustion chamber ignition coil both include a mounting bushing, which is arranged on the main body. The mounting bushing of the main combustion chamber ignition coil is arranged on a side away from the oil rail.

8. The engine according to claim 1, characterized in that The main combustion chamber ignition coil and the pre-combustion chamber ignition coil each include: an ignition coil plug-in, the ignition coil plug-in being arranged on the top of the main body; In the length direction of the engine body group, the ignition coil plug of the main combustion chamber ignition coil is arranged toward the front end or the rear end in the length direction and has a deflection angle α2 toward the intake side or the exhaust side, and α2 satisfies the relationship: 0°≤α2≤30°; and / or In the length direction of the engine body group, the ignition coil plug-in of the pre-combustion chamber ignition coil is arranged toward the front end in the length direction and has a deflection angle α3 toward the exhaust side, and α3 satisfies the relationship: 15°≤α3≤45°.

9. A vehicle, characterized in that: include: The engine according to any one of claims 1 to 8.

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