CN115247600A

CN115247600A - Engine and vehicle

Info

Publication number: CN115247600A
Application number: CN202210204974.6A
Authority: CN
Inventors: 马维高; 孙九帅; 杨博文; 李博; 武永生; 刘刚
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-10-28

Abstract

The invention discloses an engine and a vehicle, the engine includes: the engine body group is provided with a plurality of precombustion chambers and a plurality of main combustion chambers, one side of the engine body group close to the air inlet pipe in the width direction is an air inlet side, and one side of the engine body group close to the exhaust pipe in the width direction is an exhaust side; the oil pump is arranged on the machine body group and is adjacent to the exhaust side compared with the air inlet side; the ignition system comprises a plurality of precombustion chamber ignition coils, a plurality of oil pumps and a plurality of pre-combustion chamber ignition coils, wherein the plurality of precombustion chamber ignition coils are arranged in a machine body group, are arranged at intervals in the length direction of the machine body group and are positioned between the oil pumps and an air inlet side; a plurality of main combustion chamber ignition coils, a plurality of main combustion chamber ignition coils set up in organism group, and a plurality of main combustion chamber ignition coils set up and are located between a plurality of precombustion chamber ignition coils and the side of admitting air at the length direction interval of organism group. Through reasonable arrangement of the precombustion chamber ignition coil and the main combustion chamber ignition coil, all parts of the engine are arranged more compactly, and the arrangement difficulty of the whole engine can be effectively reduced.

Description

Engine and vehicle

Technical Field

The invention relates to the technical field of engines, in particular to an engine and a vehicle.

Background

In recent years, while the automobile industry in China is rapidly developed, the problems of fossil energy crisis, environmental pollution caused by fossil energy and the like also become a great burden for the country. In order to relieve the energy crisis and reduce the environmental pollution, the nation puts forward higher and higher regulatory requirements on the emission of automobile engines.

In order to meet increasingly stringent emission regulations, a gasoline engine provides a precombustion chamber technology, namely a small precombustion chamber is arranged between a spark plug and a traditional combustion chamber (hereinafter referred to as a main combustion chamber), the engine controls the spark plug to ignite the mixed gas in the precombustion chamber, the ignited mixed gas in the precombustion chamber is emitted from a plurality of reserved small holes at the bottom of the precombustion chamber by utilizing the high temperature and high pressure of the engine, and then the mixed gas in the main combustion chamber is ignited; in the traditional ignition of the spark plug, a very small fire core is formed between two electrodes of the spark plug at first, the fire core is gradually diffused to the whole combustion chamber, the energy of a plurality of high-temperature and high-pressure gases ejected from the pre-combustion chamber is far higher than that of the fire core generated by the spark plug, so that the combustion speed of the mixed gas in the main combustion chamber ignited by the pre-combustion chamber is higher than that of the mixed gas ignited by the traditional spark plug, and the mixed gas is combusted more fully.

In the related technology, because the precombustion chamber engine is in cold start and low-speed and small-load working conditions, combustion waste gas in the precombustion chamber is not easy to discharge along with the movement of air flow, the engine has the possibility of fire catching, usually, a set of ignition coil and spark plug is added in the main combustion chamber, and under the working conditions with special requirements of some engines, the ignition coil and the spark plug in the main combustion chamber are used for ignition, or the main combustion chamber and the precombustion chamber are simultaneously ignited, so that the engine is prevented from fire catching. In this case, the engine uses two ignition systems, and the overhead fuel injector is affected by the space on the top surface of the integral cylinder head cover, so that the arrangement of the two ignition coils, the fuel rail assembly and the high-pressure fuel pipe is difficult.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the engine, the arrangement of all parts of the engine is more compact, and the arrangement difficulty of the whole engine in the whole vehicle can be effectively reduced.

The invention also provides a vehicle.

An engine according to an embodiment of the first aspect of the invention includes: the engine body group is provided with a plurality of precombustion chambers and a plurality of main combustion chambers, one side of the engine body group close to the air inlet pipe in the width direction is an air inlet side, and one side of the engine body group close to the exhaust pipe in the width direction is an exhaust side; the oil pump is arranged on the engine body group, and is arranged close to the exhaust side compared with the air inlet side; the ignition coils are arranged on the engine body group and correspond to the precombustion chambers one by one, and the ignition coils are arranged at intervals in the length direction of the engine body group and are positioned between the oil pump and the air inlet side; a plurality of main combustion chamber ignition coils, it is a plurality of main combustion chamber ignition coil set up in organism group just respectively with a plurality of main combustion chamber one-to-one, it is a plurality of main combustion chamber ignition coil is in interval setting up and being located a plurality ofly on the length direction of organism group precombustion chamber ignition coil with between the side of admitting air.

According to the engine provided by the embodiment of the invention, the pre-combustion chamber ignition coil and the main combustion chamber ignition coil are arranged, so that the engine can be prevented from catching fire, the oil rail assembly and the oil pipe assembly do not need to be dismounted each time the spark plug is dismounted, the problems of poor sealing of the rubber ring, oil leakage after damage and fire hazard caused by the service life reduction of the oil injector sealing rubber ring due to the repeated dismounting and mounting of the oil rail assembly are completely avoided, the arrangement of parts of the engine is more compact, and the arrangement difficulty of the whole engine in the whole vehicle can be effectively reduced.

According to some embodiments of the invention, a plurality of said pre-chamber ignition coils and a plurality of said main chamber ignition coils are at least partially offset in a length direction of said airframe group.

According to some embodiments of the invention, further comprising: an oil pipe assembly, the oil pipe assembly with oil pump connection just dodges and opens precombustion chamber ignition coil with main combustion chamber ignition coil.

According to some embodiments of the present invention, the oil pipe assembly is disposed adjacent to a rear end of the length direction of the housing block, compared to a front end of the length direction of the housing block, and the oil pipe assembly is bent to sequentially pass through a gap between two adjacent pre-chamber ignition coils at the rear end and a gap between the main combustion chamber ignition coil and the adjacent pre-chamber ignition coil at the rear end.

According to some embodiments of the present invention, a top of the prechamber ignition coil is disposed obliquely toward the exhaust side in a height direction of the block group; and/or the top of the ignition coil of the main combustion chamber is obliquely arranged towards the air inlet side in the height direction of the machine body group.

According to some embodiments of the invention, further comprising: the oil rail assembly is arranged on the machine body group and connected with the main combustion chambers, and the oil rail assembly is located on one side, close to the air inlet side, of the ignition coils of the main combustion chambers.

According to some embodiments of the invention, the primary combustion chamber ignition coil and the precombustion chamber ignition coil each comprise: the high-pressure connecting rod is inserted into the machine body group, and the main body is arranged at the top of the high-pressure connecting rod; the oil rail assembly includes: the ignition device comprises an oil rail and a plurality of oil injectors, wherein the oil injectors are respectively connected to the oil rail, the oil injectors are respectively arranged between the lower ends of the high-pressure connecting rods of the two adjacent main combustion chamber ignition coils, and the oil rail is positioned on one side, close to the air inlet side, of the upper end of the high-pressure connecting rod.

According to some embodiments of the invention, a fuel injector plug is arranged at the top of the fuel injector, the fuel injector plug is arranged towards the rear end of the engine body group in the length direction, the deflection angle of the fuel injector plug towards the exhaust side is α 1, and α 1 satisfies the relation: alpha 1 is more than or equal to 30 degrees and less than or equal to 60 degrees.

According to some embodiments of the invention, the main combustion chamber ignition coil and the pre-combustion chamber ignition coil each comprise: the installation bush, the installation bush set up in the main part, main combustion chamber ignition coil the installation bush set up in deviating from one side of oil rail.

According to some embodiments of the invention, the primary combustion chamber ignition coil and the precombustion chamber ignition coil each comprise: the ignition coil plug-in is arranged at 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 towards the front end or the rear end in the length direction, and the deflection angle towards the air inlet side or the air exhaust side is alpha 2, and the alpha 2 satisfies the relation: alpha 2 is more than or equal to 0 degree and less than or equal to 30 degrees; and/or in the length direction of the engine body group, the ignition coil insert of the precombustion chamber ignition coil is arranged towards the front end of the length direction, and the deflection angle towards the exhaust side is alpha 3, and the alpha 3 satisfies the relation: alpha 3 is more than or equal to 15 degrees and less than or equal to 45 degrees.

According to some embodiments of the invention, the oil rail assembly further comprises: the rail pressure sensor is arranged on one side of the oil rail, the deflection angle of the rail pressure sensor towards the air inlet side is alpha 4 in the height direction of the engine body group, and the alpha 4 satisfies the relation: alpha 4 is more than or equal to 30 degrees and less than or equal to 60 degrees.

According to a second aspect embodiment of the invention, a vehicle includes the engine of the above embodiment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a top view of an engine according to an embodiment of the present disclosure;

FIG. 2 is a schematic block diagram of an engine according to an embodiment of the present invention;

FIG. 3 is a schematic illustration of the installation of a pre-chamber ignition coil and a main combustion chamber ignition coil according to an embodiment of the present invention.

Reference numerals:

100. an engine;

10. a body group; 11. an air intake side; 12. an exhaust side;

20. an oil pump;

30. a pre-chamber ignition coil; 31. a high pressure connection rod; 32. a main body; 33. installing a bushing; 34. an ignition coil plug-in;

40. a main combustion chamber ignition coil;

50. an oil rail assembly; 51. an oil rail; 52. a fuel injector; 53. a fuel injector plug-in; 54. a rail pressure sensor;

60. an oil pipe assembly; 61. an oil inlet; 62. an oil outlet; 63. an arc-shaped section; 64. straight line segment.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

An engine 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 3, and a vehicle having the engine 100 described above is also proposed as an embodiment of the present invention.

Referring to fig. 1 to 3, an engine 100 according to an embodiment of the present invention includes: the engine body group 10 is provided with a plurality of precombustion chambers and a plurality of main combustion chambers, and one side of the engine body group 10 in the width direction is an air inlet side 11. And the other side is an exhaust side 12, the oil pump 20 is disposed on the engine block 10, and the oil pump 20 is disposed adjacent to the exhaust side 12 compared to the intake side 11. Wherein the oil pump 20 can pump and supply fuel into the cylinder, thereby achieving normal operation of the engine 100.

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.

In addition, the precombustion chamber can be connected with the main combustion chamber through a through hole, and combustible mixture enters the precombustion chamber in the intake stroke and is ignited by a spark plug. The flame front formed after the mixture is ignited flows out of the through holes on the surface of the pre-combustion chamber and ignites the combustible mixture in the main combustion chamber, wherein the mixture can be combusted more quickly and sufficiently through a plurality of ignition positions. And the through holes arranged on the bottom surface of the precombustion chamber are not vertically downwards sprayed but obliquely downwards sprayed, so that active radicals of flame generated by combustion in the precombustion chamber can be uniformly and quickly sprayed into the main combustion chamber from multiple angles in three-dimensional dimension, and the combustion efficiency is improved.

A plurality of precombustion chamber ignition coils 30 set up in organism group 10 and respectively with a plurality of precombustion chamber one-to-one, a plurality of precombustion chamber ignition coils 30 set up at the interval in the length direction of organism group 10, and a plurality of precombustion chamber ignition coils 30 are located between oil pump 20 and the side of admitting air 11, a plurality of main combustion chamber ignition coils 40 set up in organism group 10, and a plurality of main combustion chamber ignition coils 40 respectively with a plurality of main combustion chamber one-to-ones, a plurality of main combustion chamber ignition coils 40 set up at the interval in the length direction of organism group 10, and a plurality of main combustion chamber ignition coils 40 are located between a plurality of precombustion chamber ignition coils 30 and the side of admitting air 11. With the development of the gasoline engine 100 of the automobile toward high rotation speed, high compression ratio, high power, low fuel consumption and low emission, the ignition device has the core components of an ignition coil and a switching device, and a spark plug can generate sparks with enough energy by increasing the energy of the ignition coil, so that the mixed gas in the engine 100 can be fully combusted. And when the engine 100 is in a cold start and low-speed and small-load working condition, the combustion waste gas in the pre-combustion chamber is not easy to discharge along with the movement of the airflow, the engine 100 has the possibility of fire catching, and the fire catching of the engine 100 can be prevented by using the ignition coil 40 and the ignition plug of the main combustion chamber in the main combustion chamber or simultaneously igniting the main combustion chamber and the pre-combustion chamber.

As shown in fig. 1-3, the oil rail assembly 50 is disposed on the engine body group 10, and the oil rail assembly 50 is connected to the plurality of main combustion chambers, the oil rail assembly 50 is located at a side of the plurality of main combustion chamber ignition coils 40 close to the air intake side 11, and the oil pipe component 60 is connected between the oil pump 20 and the oil rail assembly 50, and the oil pipe component 60 is located away from the prechamber ignition coil 30 and the main combustion chamber ignition coils 40. That is, by providing the oil rail assembly 50 and the oil pipe assembly 60, the oil pipe assembly 60 is disposed 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, and thus normal operation of the engine 100 is achieved.

Furthermore, the oil pipe assembly 60 penetrates through the precombustion chamber ignition coil 30 and the main combustion chamber ignition coil 40, so that the arrangement of the oil pipe assembly 60 and the disassembly and assembly of the precombustion chamber ignition coil 30 and the main combustion chamber ignition coil 40 are facilitated.

In addition, the oil pump 20 is a high-pressure oil pump 20, the high-pressure oil pump 20 is arranged in an overhead mode, the oil inlet 61 is determined, and the connection between the oil pipe assembly 60 and the oil rail 51 can be reduced as much as possible when the oil pipe assembly is arranged.

From this, through setting up prechamber ignition coil 30 and main combustion chamber ignition coil 40, not only can prevent that engine 100 from appearing catching fire, moreover at every turn when dismouting spark plug, need not demolish oil rail assembly 50 and oil pipe subassembly 60, avoided dismouting oil rail assembly 50 many times completely and leaded to the decline of sprayer 52 sealing rubber ring life-span, cause the rubber ring to seal tight, damaged back oil leak, the problem of the fire hazard of arousing, and make each spare part of engine 100 arrange compacter, can effectively reduce the whole machine and arrange the degree of difficulty in the whole car.

As shown in fig. 1 and 2, a plurality of precombustion chamber ignition coils 30 and a plurality of main combustion chamber ignition coils 40 are at least partially arranged in a staggered manner in the longitudinal direction of the housing group 10. That is to say, precombustion chamber ignition coil 30 and main combustion chamber ignition coil 40 misplace the interval in proper order and set up to because precombustion chamber ignition coil 30 and main combustion chamber ignition coil 40 set up at the interval in the width direction, make like this can form the triangle-shaped structure between one precombustion chamber ignition coil 30 and two main combustion chamber ignition coils 40, can make things convenient for main combustion chamber ignition coil 40 and precombustion chamber ignition coil 30 to arrange on the one hand, on the other hand can make things convenient for the installation of other spare parts, for example, make things convenient for the arrangement of spark plug, structures such as sprayer 52.

Referring to fig. 1 and 2, the oil pipe assembly 60 is located adjacent to the rear end of the length direction of the engine block 10, compared to the front end of the length direction of the engine block 10, and the oil pipe assembly 60 is bent to sequentially pass through the gap between two adjacent prechamber 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 prechamber ignition coil 30. That is, the oil pipe assembly 60 is disposed through the gap between the main combustion chamber ignition coil 40 and the prechamber ignition coil 30 at the rear end, and the main combustion chamber ignition coil 40 and the prechamber ignition coil 30 are prevented from being pulled out from the mounting hole and shielded from being removed by the oil pipe assembly 60. And when the spark plug is dismounted and mounted every time, the oil rail assembly 50 and the oil pipe assembly 60 do not need to be dismounted, so that the fire hazard caused by the fact that the service life of a sealing rubber ring of the oil injector 52 is shortened due to the fact that the oil rail assembly 50 is dismounted and mounted for many times, the rubber ring is not tightly sealed, oil leaks after damage, and the like is completely avoided.

Referring to fig. 1 and 3, the oil pipe assembly 60 includes: an arc section 63 and a straight line section 64, wherein the arc section 63 penetrates through a gap between the main combustion chamber ignition coil 40 and the precombustion chamber ignition coil 30, and one end of the arc section 63 is provided with an oil inlet 61, and the oil inlet 61 is communicated with the oil pump 20. And the straight line section 64 is connected to one side of the arc section 63 far away from the oil pump 20, and the bending radius between the straight line section 64 and the arc section 63 is more than 2 times of pipe diameter. Wherein the length of the straight line segment 64 is greater than 30mm.

And, as shown in fig. 3, the top of the prechamber ignition coil 30 is inclined toward the exhaust side 12 in the height direction of the main body group 10. Make precombustion chamber ignition coil 30's top keep away from main combustion chamber ignition coil 40 on the one hand, prevent self to wiring harness plug-in connection difficulty, on the other hand can increase the space between precombustion chamber ignition coil 30 and the main combustion chamber ignition coil 40, makes things convenient for the arrangement of other spare parts.

Also, as shown in fig. 3, the top of the main combustion chamber ignition coil 40 is disposed obliquely toward the intake side 11 in the height direction of the block group 10. Make main combustion chamber ignition coil 40's top keep away from precombustion chamber ignition coil 30 on the one hand, prevent self to wiring harness plug-in connection difficulty, on the other hand can increase the space between precombustion chamber ignition coil 30 and main combustion chamber ignition coil 40, makes things convenient for the arrangement of other spare parts.

Further, as shown in fig. 3, each of the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 includes: the high-pressure connecting rod 31 is inserted into the machine body group 10, and the main body 32 is disposed on the top of the high-pressure connecting rod 31. Further, the oil rail assembly 50 includes: the ignition device comprises an oil rail 51 and a plurality of oil injectors 52, wherein the oil injectors 52 are respectively connected to the oil rail 51, the oil injectors 52 are respectively arranged between the lower ends of high-pressure connecting rods 31 of two adjacent main combustion chamber ignition coils 40, and the oil rail 51 is positioned on one side, close to the air inlet side 11, of the upper end of the high-pressure connecting rod 31. That is to say, the oil rail assembly 50 is integrally disposed on the main combustion chamber ignition coil 40 and on the side far away from the prechamber ignition coil 30, and is lower than the top of the main combustion chamber ignition coil 40 in height, and extends toward the air intake side 11, so as to be away from the axial extension direction of the spark plug mounting hole, thereby avoiding the interference of tools and the high-pressure oil rail 51 during subsequent spark plug assembly and disassembly, which results in difficult maintenance and increased cost. Furthermore, the fuel injector 52 is located at the bottom of the high pressure connection rod 31, which can avoid the main body 32 of the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30, thereby facilitating the arrangement of the fuel injector 52.

And, the fuel injector 52 is an overhead 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.

The top of the injector 52 is provided with an injector plug 53, the injector plug 53 is arranged towards the rear end of the length direction of the engine block 10, the deflection angle towards the exhaust side 12 is alpha 1, and the alpha 1 satisfies the relation: alpha 1 is more than or equal to 30 degrees and less than or equal to 60 degrees. With this arrangement, the injector insert 53 is offset with respect to the exhaust side 12, which allows for a space for handling the injector 52 wiring harness insert for ease of routing the injector 52. Wherein, if α 1 is less than 30 °, the angle between the injector 52 and the exhaust side 12 is small, the injector 52 cannot well avoid the main combustion chamber ignition coil 40, and the arrangement of the injector 52 is inconvenient. And if α 1 > 60 °, the angle between the injector 52 and the exhaust side 12 is large, the injector 52 cannot well recede from the rail 51, and the arrangement of the injector 52 is also inconvenient.

Further, as shown in fig. 1 and 2, each of the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 includes: and the mounting bush 33, the mounting bush 33 is arranged on the main body 32, and the mounting bush 33 of the main combustion chamber ignition coil 40 is arranged on the side away from the oil rail 51. The mounting bush 33 is used to mount the main combustion chamber ignition coil 40 and the pre-chamber ignition coil 30 on the main body group 10. In addition, the mounting bushing 33 of the main combustion chamber ignition coil 40 is disposed on the side away from the oil rail 51, which facilitates the operation of the mounting tool. Similarly, the mounting bushing 33 of the prechamber ignition coil 30 is arranged on the side facing away from the main combustion chamber ignition coil 40.

And, as shown in fig. 1 and 2, the main combustion chamber ignition coil 40 and the pre-combustion chamber ignition coil 30 each include: an ignition coil insert 34, the ignition coil insert 34 being disposed on top of the main body 32.

Further, in the longitudinal direction of the housing group 10, the ignition coil insert 34 of the main combustion chamber ignition coil 40 is disposed toward the longitudinal front end or the rear end, and the deflection angle of the ignition coil insert 34 toward the intake side 11 or the exhaust side 12 is α 2, α 2 satisfying the relationship: alpha 2 is more than or equal to 0 degree and less than or equal to 30 degrees. So set up, through deflecting the setting with main combustion chamber ignition coil 40 to can make things convenient for arranging of main combustion chamber ignition coil 40, and then make things convenient for engine 100's overall structure to set up.

And, in the longitudinal direction of the unit 10, the ignition coil insert 34 of the precombustion chamber ignition coil 30 is disposed toward the front end in the longitudinal direction and the deflection angle toward the exhaust side 12 is α 3, α 3 satisfying the relation: alpha 3 is more than or equal to 15 degrees and less than or equal to 45 degrees. So set up, keep away from main combustion chamber ignition coil 40 on the one hand, prevent self to distribution bundle plug-in components grafting difficulty, can also arrange to keep away from blast pipe high temperature area as far as possible to the distribution bundle, prevent the conflagration risk.

The oil rail assembly 50 further includes: the rail pressure sensor 54 is arranged on one side of the oil rail 51 departing from the main combustion chamber ignition coil 40, and the deflection angle of the rail pressure sensor 54 towards the air inlet side 11 is alpha 4 in the height direction of the machine body group 10, and the alpha 4 satisfies the relation: alpha 4 is more than or equal to 30 degrees and less than or equal to 60 degrees. That is, the rail pressure sensor 54 needs to be offset from the main combustion chamber ignition coil 40 so that the rail pressure sensor 54 is prevented from affecting the placement of the main combustion chamber ignition coil 40. And the oil outlet 62 is arranged at the same side of the rail pressure sensor 54, and the oil outlet 62 and the rail pressure sensor 54 are kept parallel, so that the oil rail assembly 50 can be reasonably arranged, the oil rail assembly 50 is prevented from influencing the arrangement of the ignition coil 40 of the main combustion chamber, and the integrity of the oil rail assembly 50 is better.

And, the rail pressure sensor 54 can be adjusted arbitrarily in combination with the actual arrangement of the whole machine in the axial direction of the oil rail assembly 50, but it should be noted that the distance from the main combustion chamber ignition coil 40 is more than 2mm, so the rail pressure sensor 54 can be arranged between two main combustion chamber ignition coils 40, and thus the function of avoiding the main combustion chamber ignition coils 40 can be achieved.

Further, the rail pressure sensor 54 is disposed at the tail end of the oil rail 51, so that the rail pressure sensor 54 can measure the fuel pressure at the tail end of the oil rail 51, and thus the lowest value of the oil pressure in the whole oil rail 51 can be measured, and the oil pressure in the oil rail 51 can be conveniently adjusted at any time.

In addition, the oil pump 20, the oil pipe assembly 60, the oil rail 51, the injectors 52, an Electronic Control Unit (ECU) and the rail pressure sensor 54 may constitute a common rail injection type oil supply system, each injector 52 in the system is connected to the oil rail 51 through a respective high pressure oil pipe, and the oil rail 51 performs a hydraulic pressure accumulation function on the injector 52. When the engine works, the oil pump 20 delivers fuel oil to the oil rail 51 at high pressure, the oil pump 20, the rail pressure sensor 54 and the ECU form closed-loop work, the oil pressure in the oil rail 51 is accurately controlled, and the phenomenon that the oil supply pressure changes along with the rotating speed of the engine 100 is thoroughly changed. The arrangement makes the fuel injection timing and fuel metering completely separated, the fuel injection pressure and fuel injection process are timely controlled by the ECU, and the fuel injection pressure, the fuel injection starting point and the fuel injection duration of each cylinder can be adjusted according to the working condition of the engine 100, so that the optimal control point of fuel injection is pursued.

In addition, due to the existence of the oil rail 51, the oil injector 52 can realize high oil injection pressure and can realize the pre-injection of fuel oil, so that the ignition of the pre-combustion chamber is facilitated, and in a complete stroke, the ignited mixed gas in the pre-combustion chamber is emitted from a plurality of small holes reserved at the bottom of the pre-combustion chamber by utilizing the high temperature and the high pressure of the mixed gas per se, so that the mixed gas in the main combustion chamber is ignited.

According to an embodiment of the present invention, six cylinders may be disposed on the housing assembly 10, that is, six main combustion chamber ignition coils 40 and six prechamber ignition coils 30 are inserted into the housing assembly 10, so that the cylinders correspond to the main combustion chamber ignition coils 40 and the prechamber ignition coils 30 one by one. That is, engine 100 is a single ignition type.

In this case, the individual ignition is achieved by assigning an ignition coil to each cylinder, which is mounted directly on top of the spark plug, thus also eliminating the high-voltage line. This ignition scheme achieves accurate ignition by camshaft sensors or by monitoring cylinder compression, which is suitable for engines 100 of any cylinder number. Because the spark plug and ignition coil combination can be installed in the middle of the double overhead camshafts, the gap space is fully utilized. Because of the elimination of a distributor and a high-voltage wire, the energy conduction loss and the leakage loss are extremely small, no mechanical abrasion is caused, and the ignition coil and the spark plug of each cylinder are assembled together and externally wrapped by metal, the electromagnetic interference is greatly reduced, and the normal work of an electric control system of the engine 100 can be ensured.

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

A vehicle according to an embodiment of the second aspect of the invention includes the engine 100 of the above embodiment.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An engine, comprising:

the engine body group is provided with a plurality of precombustion chambers and a plurality of main combustion chambers, one side of the engine body group close to the air inlet pipe in the width direction is an air inlet side, and one side of the engine body group close to the exhaust pipe in the width direction is an exhaust side;

the oil pump is arranged on the engine body group, and is arranged close to the exhaust side compared with the air inlet side;

the ignition device comprises a body group, a plurality of precombustion chamber ignition coils, a plurality of air inlet side ignition coils and a plurality of air outlet side ignition coils, wherein the precombustion chamber ignition coils are arranged on the body group and respectively correspond to the precombustion chambers one by one;

a plurality of main combustion chamber ignition coils, a plurality of main combustion chamber ignition coil set up in organism group just respectively with a plurality of main combustion chamber one-to-one, it is a plurality of main combustion chamber ignition coil is in interval setting is in the length direction of organism group just is located a plurality of prechamber ignition coil with between the side of admitting air.

2. The engine of claim 1, wherein a plurality of said pre-chamber ignition coils and a plurality of said main chamber ignition coils are at least partially offset in a length direction of said block assembly.

3. The engine of claim 1, further comprising: an oil pipe assembly, the oil pipe assembly with oil pump connection just dodges and opens precombustion chamber ignition coil with main combustion chamber ignition coil.

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

5. The engine according to claim 1, characterized in that a top of the pre-chamber ignition coil is disposed obliquely toward the exhaust side in a height direction of the block group; and/or

And in the height direction of the machine body group, the top of the ignition coil of the main combustion chamber is obliquely arranged towards the air inlet side.

6. The engine of claim 1, further comprising: the oil rail assembly is arranged on the machine body group and connected with the main combustion chambers, and the oil rail assembly is located on one side, close to the air inlet side, of the ignition coils of the main combustion chambers.

7. The engine of claim 6, wherein the main combustion chamber ignition coil and the pre-chamber ignition coil each comprise: the high-pressure connecting rod is inserted into the machine body group, and the main body is arranged at the top of the high-pressure connecting rod;

the oil rail assembly includes: the oil injectors are respectively connected to the oil rails, the oil injectors are respectively arranged between the lower ends of the high-pressure connecting rods of the two adjacent ignition coils of the main combustion chamber, and the oil rails are located on one side, close to the air inlet side, of the upper ends of the high-pressure connecting rods.

8. The engine according to claim 7, characterized in that an injector insert is arranged at the top of the injector, the injector insert is arranged towards the rear end of the engine block in the length direction, the deflection angle of the injector insert towards the exhaust side is alpha 1, and the alpha 1 satisfies the relation: alpha 1 is more than or equal to 30 degrees and less than or equal to 60 degrees.

9. The engine of claim 7, wherein the main combustion chamber ignition coil and the pre-combustion chamber ignition coil each comprise: the installation bush, the installation bush set up in the main part, main combustion chamber ignition coil the installation bush set up in deviating from one side of oil rail.

10. The engine of claim 7, wherein the main combustion chamber ignition coil and the pre-combustion chamber ignition coil each comprise: the ignition coil plug-in is arranged at 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 towards the front end or the rear end in the length direction, and the deflection angle towards the air inlet side or the air exhaust side is alpha 2, and the alpha 2 satisfies the relation: alpha 2 is more than or equal to 0 degree and less than or equal to 30 degrees; and/or

In the length direction of the engine body group, the ignition coil plug of the precombustion chamber ignition coil is arranged towards the front end of the length direction, and the deflection angle towards the exhaust side is alpha 3, and the alpha 3 satisfies the relation: alpha 3 is more than or equal to 15 degrees and less than or equal to 45 degrees.

11. The engine of claim 7, wherein the fuel rail assembly further comprises: the rail pressure sensor is arranged on one side of the oil rail, the deflection angle of the rail pressure sensor towards the air inlet side is alpha 4 in the height direction of the engine body group, and the alpha 4 satisfies the relation: alpha 4 is more than or equal to 30 degrees and less than or equal to 60 degrees.

12. A vehicle, characterized by comprising: an engine as claimed in any one of claims 1 to 11.