CN115217667A - Engine assembly - Google Patents
Engine assembly Download PDFInfo
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- CN115217667A CN115217667A CN202210819330.8A CN202210819330A CN115217667A CN 115217667 A CN115217667 A CN 115217667A CN 202210819330 A CN202210819330 A CN 202210819330A CN 115217667 A CN115217667 A CN 115217667A
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- Prior art keywords
- mounting
- igniter
- mounting hole
- geometric center
- mounting holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/242—Arrangement of spark plugs or injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
Abstract
The present invention provides an engine assembly comprising: the cylinder cover is provided with a mounting groove and a plurality of groups of mounting holes which are arranged in sequence; each group of mounting holes are positioned below the mounting groove and communicated with the mounting groove; wherein, each group's mounting hole all includes: igniter mounting holes and fuel injector mounting holes; the extending direction of the igniter mounting hole and the extending direction of the fuel injector mounting hole form a first preset included angle. Through set up the mounting groove on the cylinder head, improve the installation convenience of some firearm and sprayer when solving how to make some firearm and sprayer rational arrangement.
Description
Technical Field
The invention relates to the field of engines, in particular to an engine assembly.
Background
Fuel injectors, also known as fuel injectors, inject fuel from a fuel rail into a combustion chamber at optimum timing, quantity and rate of fuel injection, and atomize and distribute the fuel to the cylinders of the engine. The igniter generally consists of an ignition coil, a high-voltage wire, a spark plug cap and a spark plug, the ignition coil generating a high-voltage current of sufficient voltage to the spark plug through the high-voltage wire, introducing the high-voltage current into the combustion chamber and causing it to jump the electrode gap to generate a spark to ignite the combustible mixture in the cylinder. The installation angle of the igniter influences the combustion efficiency of the engine, and the igniter is arranged obliquely and is inconvenient to install.
Disclosure of Invention
The invention provides an engine assembly, which aims to improve the installation convenience of an igniter and a fuel injector while reasonably arranging the igniter and the fuel injector.
An embodiment of the present invention provides an engine assembly, including: the cylinder cover is provided with a mounting groove and a plurality of groups of mounting holes which are arranged in sequence; each group of mounting holes are positioned below the mounting groove and communicated with the mounting groove; wherein each group of the mounting holes comprises: igniter mounting holes and fuel injector mounting holes; the extending direction of the igniter mounting hole and the extending direction of the fuel injector mounting hole form a first preset included angle.
Further, the other end, opposite to one end of the igniter mounting hole communicated with the mounting groove, is an ignition end; the other end, opposite to one end where the oil sprayer mounting hole is communicated with the mounting groove, is an oil spraying end; the distance between the geometric center of the ignition end of each group of igniter mounting holes and the geometric center of the oil injection end of the oil injector mounting hole is smaller than a first threshold value.
Further, the distance between the geometric center of one end, communicated with the mounting groove, of each group of igniter mounting holes and the geometric center of one end, communicated with the mounting groove, of the fuel injector mounting hole is not smaller than a first threshold value.
Further, on the intersecting surface, the distance between the geometric center of the igniter mounting hole and the geometric center of the injector mounting hole in the adjacent group is larger than a second threshold value; the distance between the geometric center of each group of igniter mounting holes and the geometric center of the fuel injector mounting holes is larger than a third threshold value; the intersecting surface is the surface where the communicating position of each group of mounting holes and mounting grooves is located.
Further, the igniter mounting hole includes: a first portion in communication with the mounting slot; the second part is communicated with the first part, and a second preset included angle is formed between the extending direction of the second part and the extending direction of the first part.
Further, the igniter includes: a third portion; and the fourth part is connected with one end of the third part, and the extending direction of the fourth part and the extending direction of the third part form a second preset included angle.
Further, the length of the third portion is greater than the length of the first portion.
Further, the engine assembly further comprises a cylinder cover and a sealing strip, wherein the sealing strip is arranged between the cylinder cover and the cylinder cover and seals the mounting groove.
Further, the cylinder cover is also provided with a plurality of lubricating channels, the plurality of lubricating channels are all positioned below the mounting groove, and at least part of the lubricating channels are positioned between two adjacent groups of mounting holes.
Further, the engine assembly also includes a cylinder block having a plurality of cylinders; the distance between the geometric center of the ignition end and the central axis of the cylinder is smaller than a fourth threshold value; and the distance between the geometric center of the oil injection end and the central axis of the cylinder is smaller than a fifth threshold value.
An embodiment of the present invention provides an engine assembly, including: the cylinder cover is provided with a mounting groove and a plurality of groups of mounting holes which are arranged in sequence; each group of mounting holes are positioned below the mounting groove and communicated with the mounting groove; wherein, each group's mounting hole all includes: igniter mounting holes and fuel injector mounting holes; the extending direction of the igniter mounting hole and the extending direction of the fuel injector mounting hole form a first preset included angle. Through inclining the design with some firearm mounting holes, change the angle between some firearm and the sprayer, make the fuel combustion more abundant, thereby improve the combustion efficiency of engine, under the prerequisite of guaranteeing to burn efficiency, through set up the mounting groove on the cylinder head, effectively solve the problem of mutual interference when some firearm and sprayer installation that leads to because of some firearm mounting holes and sprayer mounting hole slope design arrange, also be convenient for the installation of some firearm and sprayer, can improve the installation effectiveness, adopt the structural design of integral type mounting groove simultaneously, can carry out the whole to the cylinder head and seal, effectively improve the sealing performance of cylinder head.
Drawings
FIG. 1 is a schematic illustration of a cylinder head of an engine assembly according to an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of an engine assembly according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of another engine assembly according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of another engine assembly according to an embodiment of the present invention;
FIG. 5 isbase:Sub>A cross-sectional view A-A of FIG. 1;
FIG. 6 is a schematic illustration of another engine assembly according to an embodiment of the present invention.
Description of the reference numerals
1. An engine assembly; 10. a cylinder head; 11. mounting grooves; 12. mounting holes; 121. an igniter mounting hole; 1211. an ignition end; 1212. a first portion; 1213. a second portion; 13. a lubrication channel; 122. a fuel injector mounting hole; 1221. an oil spraying end; 20. a cylinder head cover; 21. a sealing strip; 30. a cylinder block; 40. an igniter; 41. a third portion; 42. and a fourth section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.
In the following description, the term "first/second/so" is used merely to distinguish different objects and does not mean that there is a common or relationship between the objects. It should be understood that the description of the "upper", "lower", "outer" and "inner" directions as related to the orientation in the normal use state, and the "left" and "right" directions indicate the left and right directions indicated in the corresponding schematic drawings, and may or may not be the left and right directions in the normal use state.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.
In the following detailed description, an engine assembly may be adapted for use with any type of gasoline engine, and, by way of example, the engine assembly may be adapted for use with a spark-ignition gasoline engine; for example, the engine assembly may be adapted to ignite a compression ignition gasoline engine; similarly, the engine assembly may be adapted for use with any vehicle type engine, and may be applied to, for example, an engine for a passenger car; illustratively, the engine assembly may also be applied to an engine of a truck. For convenience of description, the following description will be made by taking an ignition compression ignition type gasoline engine of the engine assembly for a car as an example.
In some embodiments, as shown in connection with fig. 1 and 2, the engine assembly 1 includes a cylinder head 10. The cylinder head 10 has a mounting groove 11, and a plurality of sets of mounting holes 12 arranged in sequence, each set of mounting holes 12 being located below the mounting groove 11 and being communicated with the mounting groove 11.
Specifically, the engine assembly 1 includes a cylinder head 10, a cylinder head cover 20, a cylinder block 30, and other components, the cylinder head 10 is used for sealing cylinders, the number of cylinders of different engines is different, the operating principle of each cylinder is the same, the number of cylinders of the engine is not limited herein, and the cylinder head 10 and the piston of each cylinder together form a combustion space and bear high-temperature and high-pressure combustion. The cylinder head cover 20 serves to cover and seal the cylinder head 10, keeping the engine oil inside, while isolating contaminants such as dirt and moisture from the outside. At the same time, the head cover 20 isolates the oil from the air, which can form an oil mist during operation of the engine, and the cooler inner surface of the head cover 20 collects the oil mist, causing the oil to condense and flow back down into the engine oil housing. The cylinder head 10 is a box-shaped component with a complex structure, and a plurality of mounting holes 12 need to be arranged on the structure, for example, an intake valve seat hole, an exhaust valve seat hole, a valve guide hole need to be processed, for an ignition gasoline engine, the cylinder head 10 is provided with an igniter mounting hole 121, an ignition coil and an ignition plug are arranged in the igniter mounting hole 121, for an ignition compression engine, the cylinder head 10 is provided with the igniter mounting hole 121 and an injector mounting hole 122, different mounting holes 12 are correspondingly provided with parts with different functions, so that the arrangement of the mounting holes 12 is particularly important in order to avoid mutual interference when the parts are mounted and ensure the stability and the working efficiency of the parts during working.
There is the contained angle in the extending direction of two adjacent spare parts, two spare parts slope installation time promptly, take place to interfere when avoiding the adjacent mounting hole 12 installation spare part on the cylinder head 10, top at cylinder head 10 sets up mounting groove 11, through sinking the design with mounting groove 11, can effectively increase the shortest distance between two adjacent mounting holes 12, thereby take place mutual interference when avoiding installing the spare part, the concrete shape of mounting groove 11 and the fluting degree of depth at the engine top do not do the injecing, accord with structural performance requirement can, its fluting degree of depth is relevant with the concrete structure of engine, the fluting is too shallow or too dark all can cause the interference between two adjacent spare parts. For example, for the installation holes 12 with included angles, the installation slot 11 may be a rectangular slot, the installation slot 11 may be too shallow, which may cause interference between two adjacent installation holes 12, the installation slot 11 may be too deep, which may cause interference between two adjacent installation holes 12 in the same installation hole 12, and the depth of the installation slot 11 may be 50 mm. Meanwhile, the cylinder head 10 is sequentially provided with a plurality of sets of mounting holes 12, it should be noted that each cylinder has a set of mounting holes 12, the engine has a plurality of cylinders, and the cylinder head 10 has a plurality of sets of mounting holes 12, for example, the engine is a four-cylinder engine, and the cylinder head 10 is sequentially provided with four sets of mounting holes 12, and each set of mounting holes 12 corresponds to a cylinder of each engine. The mounting groove 11 is located the top of the cylinder head 10, the mounting holes 12 are located below the mounting groove 11, and each group of mounting holes 12 is communicated with the mounting groove 11. It should be emphasized that, the number of the mounting grooves 11 is one, and the multiple groups of mounting holes 12 are all communicated with the same mounting groove 11, specifically, it can be understood that one end of each group of mounting holes 12 is communicated with one cylinder, and the other end of each mounting hole 12 is communicated with the mounting groove 11, so that the cylinders are communicated with the mounting grooves 11, and the structural design of the integrated mounting grooves 11 is adopted to facilitate installation, so that the cylinder cover 10 can be integrally sealed, and the sealing performance of the cylinder cover 10 is effectively improved.
Wherein, each group of mounting holes 12 all includes: igniter mounting hole 121 and sprayer mounting hole 122, the extending direction of igniter mounting hole 121 and the extending direction of sprayer mounting hole 122 are the first and predetermine the contained angle. The igniter mounting hole 121 is used for mounting the igniter 40, and the igniter 40 is generally composed of an ignition coil generating a high voltage current of a sufficient voltage to reach the ignition plug through a high voltage wire, introducing the high voltage current into the combustion chamber and causing it to jump over an electrode gap to generate a spark to ignite a combustible mixture in the cylinder, a high voltage wire, a spark plug mounted at an end of the igniter mounting hole 121 adjacent to the cylinder, and an ignition coil mounted at an end adjacent to the mounting groove 11. The injector mounting hole 122 is used for mounting an injector, the injector needs to have strong anti-blocking and anti-pollution capabilities and good atomization performance, the spraying characteristics of the injector comprise atomization granularity, oil mist distribution, oil beam direction, range, diffusion cone angle and the like, and the injector receives an injection pulse signal sent by a control system to accurately control the fuel injection quantity. In order to improve the combustion efficiency of oil-gas mixture between the fuel injector and the spark plug after fuel injection, a certain angle needs to exist between the fuel injector and the spark plug, that is, the extending direction of the igniter mounting hole 121 and the extending direction of the fuel injector mounting hole 122 form a first preset included angle, the size of the first preset included angle is related to the overall design of the engine and the performance of each part, and the specific included angle size is not limited, for example, the extending direction of the igniter mounting hole 121 and the extending direction of the fuel injector mounting hole 122 form a 20-degree included angle. Further, in order to save the space occupied by the mounting hole 12 in the cylinder head 10, a portion of the mounting hole 12 may be designed to be curved, as will be described in detail below.
The technical scheme can be used for a gasoline engine with direct injection in a cylinder and can also be used for igniting a compression ignition type gasoline engine. In igniting compression-ignition gasoline engine, in order to guarantee combustion efficiency, it has more strict requirement to ignite compression-ignition gasoline engine to the mounted position of sprayer and sprayer, need to guarantee distance and relative inclination between some firearm and the sprayer, there is the contained angle in some firearm and sprayer simultaneously when some firearm and sprayer are close to the contact, lead to taking place mutual interference when installation sprayer and some firearm, the installation of some firearm of being not convenient for, through setting up the mounting groove on the cylinder head, so that guarantee the certain distance between some firearm and the sprayer, improve the installation convenience of some firearm and sprayer when having guaranteed combustion efficiency.
An embodiment of the present invention provides an engine assembly, including: the cylinder cover is provided with a mounting groove and a plurality of groups of mounting holes which are arranged in sequence; each group of mounting holes are positioned below the mounting groove and communicated with the mounting groove; wherein, each group's mounting hole all includes: igniter mounting holes and fuel injector mounting holes; the extending direction of the igniter mounting hole and the extending direction of the fuel injector mounting hole form a first preset included angle. Through inclining the design with some firearm mounting holes, change the angle between some firearm and the sprayer, make the fuel combustion more abundant, thereby improve the combustion efficiency of engine, under the prerequisite of guaranteeing to burn efficiency, through set up the mounting groove on the cylinder head, effectively solve the problem of mutual interference when some firearm and sprayer installation that leads to because of some firearm mounting holes and sprayer mounting hole slope design arrange, also be convenient for the installation of some firearm and sprayer, can improve the installation effectiveness, adopt the structural design of integral type mounting groove simultaneously, can carry out the whole to the cylinder head and seal, effectively improve the sealing performance of cylinder head.
In some embodiments, as shown in fig. 2, in order to secure the combustion efficiency of the engine, the other end opposite to the end of the igniter mounting hole 121 communicating with the mounting groove 11 is an ignition end 1211; the other end of the fuel injector mounting hole 122 opposite to the end communicating with the mounting groove 11 is a fuel injection end 1221; the distance between the geometric center of the firing end 1211 of each set of igniter mounting holes 121 and the geometric center of the injection end 1221 of the injector mounting hole 122 is less than a first threshold. Specifically, it is understood that, in order to ensure combustion efficiency after the mixture of fuel and air, so that ignition combustion occurs at the center of the mixture of fuel and air as much as possible, the distance between the nozzle of the fuel injector and the electrode of the spark plug should be controlled within a certain range. The other end opposite to the end of the igniter mounting hole 121 communicating with the mounting groove 11 is an ignition end 1211, the ignition end 1211 communicates with the cylinder, and the ignition end 1211 is an end of the ignition plug close to the cylinder, i.e., an electrode of the ignition plug. The other end of the end, opposite to the end where the injector mounting hole 122 is communicated with the mounting groove 11, is an oil injection end 1221, the oil injection end 1221 is communicated with the cylinder, and the oil injection end 1221 is the nozzle position of the injector. The distance between the geometric center of each set of ignition end 1211 and the geometric center of fuel injection end 1221 is smaller than a first threshold, it can be understood that the distance between the electrode of the spark plug in the igniter mounting hole 121 and the nozzle of the fuel injector in the injector mounting hole 122 is smaller than the first threshold, the specific size of the first threshold is related to the overall design of the engine and the performance of related parts, and the specific value is not limited, for example, the distance between the electrode of the spark plug and the nozzle of the fuel injector in the same cylinder is smaller than 8 mm, that is, the distance between the geometric center of ignition end 1211 of each set of igniter mounting hole 121 and the geometric center of fuel injection end 1221 of the injector mounting hole 122 is smaller than 8 mm, that is, the first threshold is 8 mm.
In some embodiments, as shown in FIG. 2, to facilitate the installation of the components, the distance between the geometric center of the end of each set of igniter mounting holes 121 communicating with the mounting groove 11 and the geometric center of the end of the fuel injector mounting holes 122 communicating with the mounting groove 11 is not less than a first threshold value. It should be noted that the geometric center here means a center position in a planar figure, for example, when the mounting hole 12 is a circular hole, the geometric center is a center of the circular hole in the planar figure. Specifically, it can be understood that the spark plug and the ignition coil need to be installed from the end of the igniter mounting hole 121 communicated with the mounting groove 11, the fuel injector needs to be installed from the end of the fuel injector mounting hole 122 communicated with the mounting groove 11, in order to avoid mutual interference when the igniter 40 is installed and the fuel injector is installed, a certain distance is kept between the geometric center of the end of each group of igniter mounting holes 121 communicated with the mounting groove 11 and the geometric center of the end of each group of igniter mounting holes 122 communicated with the mounting groove 11, and the larger the distance is, the lower the possibility of interference when parts are installed in adjacent mounting holes 12 in the same group is. The distance between the geometric center of the ignition end 1211 of each set of ignition end 1211 and the fuel injection end 1221 of the fuel injector mounting hole 122 is smaller, the more sufficient the fuel-air mixture is combusted, the combustion efficiency can be ensured, and the installation of parts can be facilitated, in a certain range, the distance between the geometric center of each set of ignition end 1211 and the fuel injection end 1221 should be smaller than the distance between the geometric center of one end of each set of ignition end 1211, which is communicated with the mounting groove 11, and the geometric center of one end of each set of ignition end 121, which is communicated with the mounting groove 11, and the geometric center of one end of each set of ignition end 1211, which is communicated with the fuel injector mounting hole 122, which is communicated with the mounting groove 11, and the shortest distance between the geometric centers of the two ends on the same horizontal plane is gradually increased from bottom to top, i.e., the distance between the geometric center of one end of each set of ignition end 121, which is communicated with the mounting groove 11, and the geometric center of one end of the fuel injector mounting hole 122, which is communicated with the mounting groove 11, is not smaller than a first threshold value.
In some embodiments, as shown in fig. 2, in order to ensure that there is no interference between two adjacent mounting holes 12 in the same group of mounting holes 12, and also to ensure that there is no interference between two adjacent groups of mounting holes 12, the distance between the geometric center of the igniter mounting hole 121 and the geometric center of the injector mounting hole 122 in the adjacent group is greater than a second threshold value on the intersecting plane; the distance between the geometric center of each set of igniter mounting holes 121 and the geometric center of the injector mounting holes 122 is greater than a third threshold value; wherein, the intersecting surface is the surface where the communicating position of each group of mounting holes 12 and mounting grooves 11 is located.
Specifically, a first preset included angle is formed between the extending direction of the igniter mounting hole 121 and the extending direction of the fuel injector mounting hole 122, two intersecting conditions necessarily exist between the extending direction of the igniter mounting hole 121 and the extending direction of the fuel injector mounting hole 122, the extending direction of the first condition close to the cylinder end intersects, and the extending direction of the second condition close to the mounting groove 11 end intersects. Illustratively, the extending direction of the igniter mounting hole 121 and the extending direction of the injector mounting hole 122 intersect below the cylinder end, and then in the same group of mounting holes 12, under the condition that the igniter mounting hole 121 and the injector mounting hole 122 are not bent, the shortest distance between the igniter mounting hole 121 and the injector mounting hole 122 on the same horizontal plane gradually increases from bottom to top, and then in the two adjacent groups of mounting holes 12, on the same horizontal plane, the shortest distance between the igniter mounting hole 121 and the injector mounting hole 122 in the adjacent group gradually decreases. The installation of the igniter installation hole 121 and the injector installation hole 122 in the same group of installation holes 12 is ensured not to interfere, meanwhile, the installation of the igniter installation hole 121 and the injector installation hole 122 between the two adjacent groups of installation holes 12 is also ensured not to interfere, on the intersecting surface of the positions where the installation holes 12 are communicated with the installation grooves 11, the distance between the geometric center of the igniter installation hole 121 and the geometric center of the injector installation hole 122 in the adjacent group is larger than a second threshold value, the distance between the geometric center of each group of igniter installation holes 121 and the geometric center of the injector installation hole 122 is larger than a third threshold value, the second threshold value and the third threshold value are not limited, the two threshold values can be the same or different, and the installation requirements and the structural performance requirements of an engine can be met.
In some embodiments, as shown in fig. 2, in order to save the space occupied by the mounting hole 12 in the cylinder head 10, the igniter mounting hole 121 may be designed to be curved, and the igniter mounting hole 121 includes: a first portion 1212 and a second portion 1213, the first portion 1212 communicating with the mounting groove 11; the second portion 1213 is in communication with the first portion 1212, and an extending direction of the second portion 1213 is at a second predetermined angle to an extending direction of the first portion 1212. Specifically, the extending direction of the igniter mounting hole 121 and the extending direction of the injector mounting hole 122 form a first preset included angle, as the extending length increases, the distance between the igniter mounting hole 121 and the injector mounting hole 122 increases gradually, the space of the cylinder head 10 occupied by the igniter mounting hole 121 and the injector mounting hole 122 increases gradually, in order to effectively and reasonably utilize the space, the igniter mounting hole 121 is bent, so as to change the distance between the igniter mounting hole 121 and the injector mounting hole 122, and reduce the space occupied by the igniter mounting hole 121, the igniter mounting hole 121 includes a first portion 1212 and a second portion 1213, the extending direction of the second portion 1213 and the extending direction of the injector mounting hole 122 form the first preset included angle, one end of the first portion 1212 is communicated with the second portion 1213, the other end is communicated with the injector mounting hole 11, the extending direction of the second portion 1213 and the extending direction of the first portion 1212 form a second preset included angle, and the specific second preset value is not limited, it should be mentioned that the extending direction of the first portion 1212 deflects to the extending direction close to the injector mounting hole 122, so as to change the distance between the igniter mounting hole 121 and the injector mounting hole 122.
In some embodiments, as shown in FIG. 3, where the igniter is mounted in the igniter mounting hole 121, the igniter 40 includes: the third portion 41 and the fourth portion 42, the fourth portion 42 is connected to one end of the third portion 41, and the extending direction of the fourth portion 42 and the extending direction of the third portion 41 form a second preset included angle. The igniter 40 is specifically mounted in the igniter mounting hole 121, and the igniter mounting hole 121 is bent, so that the igniter 40 is adapted to be bent at a corresponding angle in the igniter mounting hole 121, illustratively, the igniter 40 includes an ignition coil and a spark plug, the spark plug is mounted in the second portion 1213 of the igniter mounting hole 121, a portion of the ignition coil is mounted in the second portion 1213 of the igniter mounting hole 121, and a portion of the ignition coil is mounted in the first portion 1212 of the igniter mounting hole 121, the structure of the ignition coil should be adapted to the structure of the mounting hole 12, so that the ignition coil also needs to be bent, and the bending angle of the ignition coil should be the same as a second preset included angle between the extending direction of the second portion 1213 and the extending direction of the first portion 1212. One part of the ignition coil is a third part 41 of the igniter 40, the other part of the ignition coil is a fourth part 42 of the igniter 40, and the extending direction of the fourth part 42 and the extending direction of the third part 41 form a second preset included angle, that is, the bending angle of the ignition coil is the second preset included angle.
In some embodiments, as shown in FIG. 3, the third portion 41 has a length greater than the first portion to facilitate the attachment of the igniter 40 to other components. It is understood that a part of the ignition coil belongs to the fourth portion 42 of the igniter 40, the remaining part of the ignition coil belongs to the third portion 41, the third portion 41 and the fourth portion 42 are distinguished from each other from the bent portion, the length of the third portion 41 is greater than that of the first portion, and it is understood that the length of the ignition coil is greater than that of the first portion 1212 of the igniter mounting hole 121, that is, the ignition coil exceeds the igniter mounting hole 121 and is located in the mounting groove 11, and the specific length of the excess is not limited, and is convenient for connecting with other parts.
In some embodiments, as shown in fig. 4, in order to improve the sealing performance of the cylinder head 10, the engine assembly 1 includes a head cover 20 and a sealing strip 21, the sealing strip 21 is disposed between the head cover 20 and the cylinder head 10, and the mounting groove 11 is sealed. Specifically, the cylinder head cover 20 serves to cover and seal the cylinder head 10, to hold engine oil inside, and to insulate contaminants such as dirt and moisture from the outside. In order to prevent cylinder blow-by and insufficient cylinder compression pressure, the mounting groove 11 is sealed by providing a seal strip 21 between the head cover 20 and the cylinder head 10. The sealing strip 21 can be a complete sealing ring and is arranged on the periphery of the mounting groove 11, the periphery of the sealing strip refers to the position where the cylinder cover 10 is in contact with the cylinder head cover 20 and is tightly attached to the position of the mounting groove 11, and meanwhile, in order to further improve the sealing effect, the position where the cylinder cover 10 is in contact with the cylinder head cover 20 is coated with silica gel to form an integrated silica gel sealing strip, so that the sealing performance of the cylinder cover 10 is further ensured, and the problem that the engine power is reduced due to insufficient cylinder compression pressure is avoided.
In some embodiments, as shown in fig. 5, the cylinder head 10 further has a plurality of lubrication channels 13, each of the plurality of lubrication channels 13 is located below the mounting groove 11, and at least a portion of the lubrication channels 13 is located between two adjacent sets of the mounting holes 12. In particular, the lubricating channels 13 are used for conveying lubricating oil to positions of parts of the engine, which need to be lubricated, for lubricating the parts, the positions of the parts are different, and the positions of the lubricating channels 13 are also different, in view of the fact that the integral sink mounting groove 11 is adopted in the scheme, the lubricating channels 13 are all located below the mounting groove 11, and at least part of the lubricating channels 13 can penetrate through the two adjacent groups of mounting holes 12, namely at least part of the lubricating channels 13 are located between the two adjacent groups of mounting holes 12.
In some embodiments, as shown in fig. 6, to further improve combustion efficiency, the engine assembly 1 further includes a cylinder block 30, the cylinder block 30 having a plurality of cylinders, a distance between a geometric center of the ignition end 1211 and a cylinder central axis is less than a fourth threshold, and a distance between a geometric center of the injection end 1221 and the cylinder central axis is less than a fifth threshold. Specifically, to lighting compression ignition engine, the piston is close to the fuel sprayer when reaching the top dead center, and in order to realize the abundant atomizing of oil gas, the top of piston is provided with central pit, and central pit has a plurality of advantages, and is first, and central pit and inside centrum can promote the air in the cylinder and roll and flow when compression stroke, and the rolling air current can help the abundant mixture of petrol and air, is favorable to improving combustion speed and combustion efficiency. And secondly, the central pit can contain gasoline, and the gasoline is just sprayed into the central pit after being ejected from the oil nozzle, so that the gasoline has enough space to be mixed with air for combustion. The center point of the central pit is arranged on the central axis of the cylinder, in order to further improve the combustion efficiency, the distance between the geometric center of the ignition end 1211 and the central axis of the cylinder is smaller than a fourth threshold, the distance between the geometric center of the injection end 1221 and the central axis of the cylinder is smaller than a fifth threshold, it can be specifically understood that the distance between the electrode of the spark plug and the central axis of the cylinder is smaller than the fourth threshold, the distance between the injection nozzle and the central axis of the cylinder is smaller than the fifth threshold, and the combustion efficiency of the engine is improved by distance limitation, the specific values of the fourth threshold and the fifth threshold are not limited, the values of the fourth threshold and the fifth threshold may be the same or different, and the combustion requirements are met, for example, the fourth threshold and the fifth threshold are both 5 mm, that is, the distance between the geometric center of the ignition end 1211 and the central axis of the cylinder is smaller than 5 mm, and the distance between the geometric center of the injection end 1221 and the central axis of the cylinder is smaller than 5 mm.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. An engine assembly, comprising:
the cylinder cover is provided with a mounting groove and a plurality of groups of mounting holes which are arranged in sequence;
each group of mounting holes are positioned below the mounting groove and communicated with the mounting groove;
wherein each group the mounting hole all includes: igniter mounting holes and fuel injector mounting holes;
the extending direction of the igniter mounting hole and the extending direction of the fuel injector mounting hole form a first preset included angle.
2. The engine assembly of claim 1, wherein the other end of the igniter mounting hole opposite to the end communicating with the mounting groove is a firing end;
the other end, opposite to one end where the oil sprayer mounting hole is communicated with the mounting groove, is an oil spraying end;
the distance between the geometric center of the ignition end of each set of igniter mounting holes and the geometric center of the oil injection end of the oil injector mounting hole is smaller than a first threshold value.
3. The engine assembly of claim 2, wherein a distance between a geometric center of an end of each set of the igniter mounting holes in communication with the mounting groove and a geometric center of an end of the fuel injector mounting holes in communication with the mounting groove is not less than a first threshold value.
4. The engine assembly of claim 1, wherein a distance between a geometric center of the igniter mounting hole and a geometric center of the injector mounting hole in an adjacent group on the intersecting plane is greater than a second threshold value;
the distance between the geometric center of each group of igniter mounting holes and the geometric center of the fuel injector mounting holes is larger than a third threshold value;
the intersecting surface is the surface where the communicating position of each group of mounting holes and mounting grooves is located.
5. The engine assembly of claim 1, wherein the igniter mounting hole comprises:
a first portion in communication with the mounting slot;
the second part is communicated with the first part, and a second preset included angle is formed between the extending direction of the second part and the extending direction of the first part.
6. The engine assembly of claim 5, wherein the igniter comprises:
a third portion;
and the fourth part is connected with one end of the third part, and the extending direction of the fourth part and the extending direction of the third part form a second preset included angle.
7. The engine assembly of claim 6, wherein the length of the third portion is greater than the length of the first portion.
8. The engine assembly of claim 1, further comprising a head cover and a seal disposed between the head cover and the cylinder head to seal the mounting groove.
9. The engine assembly of claim 1, wherein the cylinder head further has a plurality of lubrication channels, each of the plurality of lubrication channels being located below the mounting slot, and at least a portion of the lubrication channels being located between two adjacent sets of mounting holes.
10. The engine assembly of claim 2, further comprising a cylinder block having a plurality of cylinders;
the distance between the geometric center of the ignition end and the central axis of the cylinder is smaller than a fourth threshold value;
and the distance between the geometric center of the oil injection end and the central axis of the cylinder is smaller than a fifth threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819330.8A CN115217667A (en) | 2022-07-12 | 2022-07-12 | Engine assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819330.8A CN115217667A (en) | 2022-07-12 | 2022-07-12 | Engine assembly |
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| Publication Number | Publication Date |
|---|---|
| CN115217667A true CN115217667A (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210819330.8A Pending CN115217667A (en) | 2022-07-12 | 2022-07-12 | Engine assembly |
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| Country | Link |
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| CN (1) | CN115217667A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006008736B3 (en) * | 2006-02-24 | 2007-05-31 | Innotec Forschungs- Und Entwicklungs-Gmbh | Combustion engine for a vehicle comprises a cylinder head hood made from an electrically non-conducting material, an ignition coil arranged in a channel in the hood and a electromagnetic screening sleeve made from a flat conducting material |
| CN206917755U (en) * | 2017-03-28 | 2018-01-23 | 湖南长丰动力有限责任公司 | A kind of supercharged direct-injection engine cylinder head |
-
2022
- 2022-07-12 CN CN202210819330.8A patent/CN115217667A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006008736B3 (en) * | 2006-02-24 | 2007-05-31 | Innotec Forschungs- Und Entwicklungs-Gmbh | Combustion engine for a vehicle comprises a cylinder head hood made from an electrically non-conducting material, an ignition coil arranged in a channel in the hood and a electromagnetic screening sleeve made from a flat conducting material |
| CN206917755U (en) * | 2017-03-28 | 2018-01-23 | 湖南长丰动力有限责任公司 | A kind of supercharged direct-injection engine cylinder head |
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