CN114962091B - Ventilation system of V-shaped engine, V-shaped engine and control method of V-shaped engine - Google Patents
Ventilation system of V-shaped engine, V-shaped engine and control method of V-shaped engine Download PDFInfo
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- CN114962091B CN114962091B CN202210763811.1A CN202210763811A CN114962091B CN 114962091 B CN114962091 B CN 114962091B CN 202210763811 A CN202210763811 A CN 202210763811A CN 114962091 B CN114962091 B CN 114962091B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
- F02M35/116—Intake manifolds for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0437—Liquid cooled heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
- F02D41/182—Circuit arrangements for generating control signals by measuring intake air flow for the control of a fuel injection device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Supercharger (AREA)
Abstract
The invention relates to the technical field of engines, and discloses a ventilation system of a V-shaped engine, the V-shaped engine and a control method of the V-shaped engine. The ventilation system of the V-shaped engine comprises a first supercharger, a second supercharger, a first exhaust manifold, a second exhaust manifold, a first intercooler and a second intercooler which are arranged between a first row of cylinders and a second row of cylinders of the V-shaped engine, a first air inlet manifold and a second air inlet manifold which are respectively positioned outside the first row of cylinders and the second row of cylinders; the first intercooler and the second intercooler are respectively communicated with the first supercharger and the second supercharger; the first air inlet manifold and the second air inlet manifold are respectively used for communicating the air inlets of the first intercooler and the second intercooler and the air inlets of the first row of cylinders; the first exhaust manifold and the second exhaust manifold communicate with the exhaust ports of the first bank cylinder and the exhaust ports of the second bank cylinder, respectively. The invention has more compact structure and more simplified ventilation path.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a ventilation system of a V-shaped engine, the V-shaped engine and a control method thereof.
Background
The V-shaped engine is used as a core power assembly of a high-end passenger car, and has a complex structure, so that the V-shaped engine provides super-strong power for the whole car and simultaneously brings some problems: 1. the whole structure has larger size and large cabin layout difficulty; in particular to a turbo-charged engine, 1 supercharger is required to be respectively arranged in two rows, so that the size of the whole engine is further increased, and the difficulty of cabin layout is further improved; 2. the turbocharged V-shaped engine has the advantages that due to the fact that the space of the engine room is limited, the trend of an air inlet and outlet pipeline, particularly an air inlet and air outlet intercooling pipeline, is complex, two rows of asymmetric structures are caused, and the consistency of two rows of combustion of the engine is affected.
The existing 8-cylinder V-shaped engine mostly adopts a structure of two rows of exhaust gas and middle air intake, the exhaust gas is arranged at two sides of the engine, and for a supercharger type, a turbocharger is also required to be arranged at two sides of the engine, which is a root cause of increasing the size of the engine, complicating a pipeline in a cabin and increasing the length of an intercooling pipeline. The long air inlet pipe and the long inter-cooling pipeline exist, the complexity and the arrangement difficulty of the engine room are greatly increased, and the low-speed response of the supercharger and the consistency of the work of the two-row supercharger (supercharging pressure, supercharger rotating speed and the like) are deteriorated due to the fact that the pipeline is overlong and asymmetric. Is unfavorable for optimizing the combustion of the engine and is unfavorable for meeting stricter emission regulations and fuel consumption regulations.
Therefore, there is a need for a ventilation system of a V-type engine, a V-type engine and a control method thereof to solve the above problems.
Disclosure of Invention
Based on the above, the present invention aims to provide a ventilation system of a V-type engine, a V-type engine and a control method thereof, which have a more compact structure and a more simplified ventilation path.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a ventilation system for a V-engine, comprising:
the first supercharger and the second supercharger are arranged between a first row of cylinders and a second row of cylinders of the V-type engine;
the first intercooler and the second intercooler are arranged at one end of the V-shaped engine and are respectively communicated with the first supercharger and the second supercharger;
the first air inlet manifold and the second air inlet manifold are respectively positioned at the outer sides of the first row of cylinders and the second row of cylinders and are respectively used for communicating the first intercooler and the second intercooler as well as the air inlets of the first row of cylinders and the air inlets of the second row of cylinders;
and the first exhaust manifold and the second exhaust manifold are arranged between the first row of cylinders and the second row of cylinders and are respectively communicated with the exhaust ports of the first row of cylinders and the exhaust ports of the second row of cylinders.
As a preferable mode of the ventilation system of the V-type engine, the ventilation system further includes a first intercooling front connecting pipe and a second intercooling front connecting pipe disposed between the first bank of cylinders and the second bank of cylinders, the first intercooling front connecting pipe and the second intercooling front connecting pipe being respectively communicated with the first supercharger and the second supercharger and the first intercooler and the second intercooler.
As a preferable mode of the ventilation system of the V-type engine, the ventilation system further includes a first throttle body and a second throttle body for communicating the first intercooler and the second intercooler and the first intake manifold and the second intake manifold, respectively.
As a preferable scheme of the ventilation system of the V-shaped engine, the first intercooler and the second intercooler are both water-cooled type intercoolers.
As a preferable scheme of the ventilation system of the V-shaped engine, a pressure balance pipe is communicated between the first intercooler and the second intercooler.
As a preferable mode of the ventilation system of the V-shaped engine, the pressure balance pipe is provided with an electromagnetic control valve.
As a preferable mode of the ventilation system of the V-type engine, the first exhaust manifold and the second exhaust manifold are each provided with a turbocharger.
As a preferable mode of the ventilation system of the V-type engine, the first exhaust manifold and the second exhaust manifold are each provided with two exhaust outlets, and a branch pipe connected to an adjacent firing cylinder shares one of the exhaust outlets.
A V-engine comprising first and second banks of cylinders arranged in a V-shape and a ventilation system for a V-engine according to any one of the above aspects.
A control method of a V-type engine for controlling the V-type engine according to the above aspect, the control method comprising:
acquiring the air inflow of the first bank cylinder and the second bank cylinder, wherein the air inflow is half of the sum of the total air inflow of the first bank cylinder and the total air inflow of the second bank cylinder;
calculating an average intake air amount Pavg for each cylinder, and obtaining a pressure P (a), P (a) =p for each cylinder based on fourier transform avg +a 1 *cos(a*w)+b 1 *sin(a*w)+a 2 *cos(2a*w)+b 2 *sin(2a*w)；
The injection quantity of the corresponding cylinder is controlled according to the pressure P (a) of the cylinder.
The beneficial effects of the invention are as follows:
according to the invention, the first air inlet manifold and the second air inlet manifold are arranged on the outer sides of the first row of cylinders and the second row of cylinders, and the first supercharger and the second supercharger are arranged between the first row of cylinders and the second row of cylinders, so that the ventilation system can be used for air inlet from two sides and air exhaust from the middle. Through setting up the intercooler into two to set up in the one end of V type engine, be favorable to reducing the pipeline distance after the intercooler. The ventilation system is more compact in structure, the ventilation path is more simplified, and the overall size of the V-shaped engine is reduced; meanwhile, the symmetry is better, the mutual interference is reduced, and the combustion consistency of each cylinder of the V-shaped engine is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic illustration of a ventilation system for a V-engine according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a first intake manifold of a ventilation system of a V-engine according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a first exhaust manifold of a breathing system of a V-engine according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second exhaust manifold of a ventilation system of a V-engine according to an embodiment of the present invention.
In the figure:
11. a first supercharger; 12. a second supercharger;
21. a first intercooler; 22. a second intercooler;
31. a first intake manifold; 32. a second intake manifold;
41. a first exhaust manifold; 411. a first branch pipe; 412. a second branch pipe; 413. a third branch pipe; 414. a fourth branch pipe; 42. a second exhaust manifold; 425. a fifth branch pipe; 426. a sixth branch pipe; 427. a seventh branch pipe; 428. an eighth branch pipe; 43. an exhaust outlet;
51. a first intercooling front connecting pipe; 52. a second intercooling front connecting pipe;
61. a first throttle body; 62. a second throttle body;
7. a pressure balance tube.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 4, the present embodiment provides a ventilation system of a V-type engine, which includes a first supercharger 11, a second supercharger 12, a first exhaust manifold 41 and a second exhaust manifold 42 provided between a first bank cylinder and a second bank cylinder of the V-type engine, a first intercooler 21 and a second intercooler 22 provided at one end of the V-type engine, a first intake manifold 31 and a second intake manifold 32 located outside the first bank cylinder and the second bank cylinder, respectively; the first intercooler 21 and the second intercooler 22 are respectively in communication with the first supercharger 11 and the second supercharger 12; the first intake manifold 31 and the second intake manifold 32 are respectively used for communicating the first intercooler 21 and the second intercooler 22 and the intake ports of the first bank of cylinders and the intake ports of the second bank of cylinders; the first exhaust manifold 41 and the second exhaust manifold 42 communicate with the exhaust ports of the first bank cylinder and the exhaust ports of the second bank cylinder, respectively.
By disposing the first intake manifold 31 and the second intake manifold 32 outside the first bank cylinder and the second bank cylinder and disposing the first supercharger 11 and the second supercharger 12 between the first bank cylinder and the second bank cylinder, the ventilation system is caused to intake air from both sides and exhaust air from the middle. Through setting up the intercooler into two to set up in the one end of V type engine, be favorable to reducing the pipeline distance after the intercooler. The ventilation system is more compact in structure, the ventilation path is more simplified, and the overall size of the V-shaped engine is reduced; meanwhile, the symmetry is better, the mutual interference is reduced, and the combustion consistency of each cylinder of the V-shaped engine is effectively improved.
In this embodiment, the V-shaped included angle between the first bank of cylinders and the second bank of cylinders of the V-shaped engine is 90 °, and the V-shaped engine is provided with 8 cylinders, where the first bank of cylinders is 1, 2, 3, and 4 cylinders of the V-shaped engine, and the second bank of cylinders is 5, 6, 7, and 8 cylinders of the V-shaped engine, respectively. The exhaust part of the ventilation system and the supercharger are arranged in the V-shaped included angle, so that the problem of large size of the whole V-shaped engine is effectively solved.
Specifically, the ventilation system further includes a first intercooling front connecting pipe 51 and a second intercooling front connecting pipe 52 disposed between the first bank cylinder and the second bank cylinder, the first intercooling front connecting pipe 51 and the second intercooling front connecting pipe 52 communicating with the first supercharger 11 and the second supercharger 12 and the first intercooler 21 and the second intercooler 22, respectively. Through hanging the intercooler at one end of the V-shaped engine, the layout of the intercooler pipeline in the engine cabin of the V-shaped engine is greatly simplified, the lengths of the first intercooler front connecting pipe 51 and the second intercooler front connecting pipe 52 are shortened by at least 80%, the lengths of the first intercooler front connecting pipe 51 and the second intercooler front connecting pipe 52 are not more than 220mm, and the corresponding speed of the V-shaped engine is improved; meanwhile, symmetry is improved, and combustion consistency of two rows of cylinders of the V-shaped engine is further improved.
Further, the ventilation system further includes a first throttle body 61 and a second throttle body 62 for communicating the first intercooler 21 and the second intercooler 22 and the first intake manifold 31 and the second intake manifold 32, respectively. Optionally, the first throttle body 61 and the second throttle body 62 are respectively and directly installed at the outlets of the first intercooler 21 and the second intercooler 22 through O-shaped rubber ring sealing, so that the arrangement is more compact while simplifying the ventilation pipeline. One end of the first throttle body 61 and the second throttle body 62, which is far away from the first intercooler 21 and the second intercooler 22, is connected with the first intake manifold 31 and the second intake manifold 32, so that the intercooled gas can more smoothly enter the intake manifold; meanwhile, the first throttle body 61 and the second throttle body 62 control the intake air of the two banks of cylinders, respectively, effectively reducing the mutual interference between the two banks of cylinders.
It should be noted that, as shown in fig. 2, the first intake manifold 31 and the second intake manifold 32 are both provided in a branch-free form, which is beneficial to reducing the volume and reducing the influence on the overall structural dimension; and meanwhile, the volume of the pressure stabilizing cavity is maximized, and the fluctuation of the air inlet pressure is reduced. Illustratively, the lengths of the first intake manifold 31 and the second intake manifold 32 are no greater than 20mm.
Optionally, the first intercooler 21 and the second intercooler 22 are both water-cooled type intercoolers, so that the water cooling effect is better. And the cooling effect is further improved by being arranged at the front end of the V-shaped engine and closer to the V-shaped engine.
As an alternative to a ventilation system, a pressure equalization pipe 7 is connected between the first charge air cooler 21 and the second charge air cooler 22. The pressure balance pipe 7 is communicated with the lower air chambers of the first intercooler 21 and the second intercooler 22, and the first intercooler 21 and the second intercooler 22 are communicated for balancing the air inlet pressure of the two rows of cylinders, so that the air inlet uniformity of the two rows of cylinders is further improved. The inner diameter of the pressure equalization tube 7 is illustratively between phi 16 mm-phi 32 mm. Optionally, an electromagnetic control valve is disposed on the pressure balance tube 7, and is used for controlling the on-off or opening of the pressure balance tube 7, so as to control the intake pressure of the pressure balance tube 7.
Because the number of the cylinders of the V-shaped engine is large, the ignition interval is small, the combustion of each cylinder is more easily influenced by exhaust interference, and particularly the combustion uniformity of each cylinder is obviously influenced by the ignition sequence of the V-shaped engine with 8 cylinders. Therefore, in the present embodiment, as shown in fig. 3 and 4, the first exhaust manifold 41 and the second exhaust manifold 42 are each provided with two exhaust outlets 43, and the branch pipes connected to the cylinders that are adjacent to the ignition share one exhaust outlet 43. Illustratively, each cylinder firing order for an 8-cylinder V-type engine is 1, 5, 4, 8, 6, 3, 7, 2. Wherein the first branch pipe 411 and the third branch pipe 413 of the first exhaust manifold 41 which are communicated with the 1 st and 3 rd cylinders share one exhaust outlet 43, and the second branch pipe 412 and the fourth branch pipe 414 which are communicated with the 2 nd and 4 th cylinders share one exhaust outlet 43; the second exhaust manifold 42 shares one exhaust outlet 43 with the fifth branch pipe 425 and the sixth branch pipe 426 that communicate with the 5 th and 6 th cylinders, and shares one exhaust outlet 43 with the seventh branch pipe 427 and the eighth branch pipe 428 that communicate with the 7 th and 8 th cylinders. The arrangement is beneficial to reducing exhaust interference, improving the combustion uniformity of each cylinder and optimizing the combustion in the cylinder; the left and right rows of the exhaust manifolds are formed into double-flow-channel outlets after 4 branch pipes are mixed in pairs, and the double-flow-channel outlets correspond to the first supercharger 11 and the second supercharger 12, so that the utilization rate of the kinetic energy of exhaust gas of the supercharger is improved, and the low-speed responsiveness of the supercharger is further improved. Preferably, both the first exhaust manifold 41 and the second exhaust manifold 42 are provided with turbochargers.
The embodiment also discloses a V-shaped engine, which comprises a first row of cylinders and a second row of cylinders which are arranged in a V shape and a ventilation system of the V-shaped engine according to any one of the above schemes. The V-shaped engine adopting the ventilation system has the advantages of more compact structure, higher kinetic energy utilization rate and better low-speed response.
The embodiment also discloses a control method of the V-shaped engine, which is used for controlling the V-shaped engine, and comprises the following steps: acquiring the air inflow of the first row of cylinders and the second row of cylinders, wherein the air inflow is half of the sum of the total air inflow of the first row of cylinders and the total air inflow of the second row of cylinders; calculating the average intake air amount P of each cylinder avg Acquiring the pressure P (a), P (a) =p, of each cylinder based on fourier transform avg +a 1 *cos(a*w)+b 1 *sin(a*w)+a 2 *cos(2a*w)+b 2 * sin (2 a x w); the injection quantity of the corresponding cylinder is controlled according to the pressure P (a) of the cylinder. Wherein a is 1 、a 2 、b 1 、b 2 All are correction coefficients, and can be obtained through experiments or simulation.
Specifically, the first intake manifold 31 and the second intake manifold 32 are provided with intake mass flow meters, and based on the arrangement of the pressure balance pipe 7, half of the sum of the intake air flow rates of the two banks of cylinders is acquired and given to the ECU, achieving the first balancing of the intake air of the two banks of cylinders. Further, the intake pressure fluctuation of each cylinder is subjected to smoothing treatment (peak clipping and valley removing) based on Fourier transformation, the fuel injection quantity of each cylinder is optimized based on the algorithm, and the intake air quantity and the fuel injection quantity are optimized by the control method, so that the combustion consistency of each cylinder is improved.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (9)
1. A ventilation system for a V-engine, comprising:
a first supercharger (11) and a second supercharger (12) which are provided between a first bank cylinder and a second bank cylinder of a V-type engine and which enable the ventilation system to intake air from both sides and exhaust air from the middle;
a first intercooler (21) and a second intercooler (22) which are suspended at one end of the V-shaped engine and are arranged at one end closer to the V-shaped engine and are respectively communicated with the first supercharger (11) and the second supercharger (12);
a first intake manifold (31) and a second intake manifold (32) located outside the first bank of cylinders and the second bank of cylinders, respectively, for communicating the first intercooler (21) and the second intercooler (22) and the intake ports of the first bank of cylinders and the intake ports of the second bank of cylinders, respectively;
a first exhaust manifold (41) and a second exhaust manifold (42) provided between the first bank cylinder and the second bank cylinder and communicating with the exhaust ports of the first bank cylinder and the second bank cylinder, respectively;
the ventilation system further comprises a first intercooling front connecting pipe (51) and a second intercooling front connecting pipe (52) which are arranged between the first cylinder row and the second cylinder row, and the first intercooling front connecting pipe (51) and the second intercooling front connecting pipe (52) are respectively communicated with the first supercharger (11) and the second supercharger (12) and the first intercooler (21) and the second intercooler (22).
2. The ventilation system of a V-engine according to claim 1, further comprising a first throttle body (61) and a second throttle body (62) for communicating the first intercooler (21) and the second intercooler (22) and the first intake manifold (31) and the second intake manifold (32), respectively.
3. The ventilation system of a V-engine according to claim 1, characterized in that the first intercooler (21) and the second intercooler (22) are both water-cooled intercoolers.
4. The ventilation system of a V-engine according to claim 1, characterized in that a pressure balancing pipe (7) is connected between the first intercooler (21) and the second intercooler (22).
5. The ventilation system of a V-type engine according to claim 4, characterized in that the pressure equalization pipe (7) is provided with an electromagnetic control valve.
6. A ventilation system of a V-engine according to claim 1, characterized in that the first exhaust manifold (41) and the second exhaust manifold (42) are each provided with a turbocharger.
7. A ventilation system of a V-engine according to claim 1, characterized in that the first exhaust manifold (41) and the second exhaust manifold (42) are each provided with two exhaust outlets (43), one exhaust outlet (43) being shared by branch pipes connected to adjacent firing cylinders.
8. A V-engine comprising a first bank of cylinders and a second bank of cylinders arranged in a V-shape and a ventilation system of the V-engine of any one of claims 1-7.
9. A control method of a V-type engine for controlling the V-type engine according to claim 8, the control method comprising:
acquiring the air inflow of the first bank cylinder and the second bank cylinder, wherein the air inflow is half of the sum of the total air inflow of the first bank cylinder and the total air inflow of the second bank cylinder;
calculating the average intake air amount P of each cylinder avg Acquiring the pressure P (a), P (a) =p, of each cylinder based on fourier transform avg +a 1 *cos(a*w)+b1*sin(a*w)+a 2 *cos(2a*w)+b 2 *sin(2a*w)；
The injection quantity of the corresponding cylinder is controlled according to the pressure P (a) of the cylinder.
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| CN202210763811.1A CN114962091B (en) | 2022-06-29 | 2022-06-29 | Ventilation system of V-shaped engine, V-shaped engine and control method of V-shaped engine |
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| CN202210763811.1A CN114962091B (en) | 2022-06-29 | 2022-06-29 | Ventilation system of V-shaped engine, V-shaped engine and control method of V-shaped engine |
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| CN114962091A CN114962091A (en) | 2022-08-30 |
| CN114962091B true CN114962091B (en) | 2023-10-27 |
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| JP2017141789A (en) * | 2016-02-12 | 2017-08-17 | マツダ株式会社 | Intake air cooling device for engine |
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