WO2016103407A1 - Moteur en v - Google Patents

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Publication number
WO2016103407A1
WO2016103407A1 PCT/JP2014/084347 JP2014084347W WO2016103407A1 WO 2016103407 A1 WO2016103407 A1 WO 2016103407A1 JP 2014084347 W JP2014084347 W JP 2014084347W WO 2016103407 A1 WO2016103407 A1 WO 2016103407A1
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WO
WIPO (PCT)
Prior art keywords
bank
passage
side intake
injection device
intake passage
Prior art date
Application number
PCT/JP2014/084347
Other languages
English (en)
Japanese (ja)
Inventor
武広 西殿
格 野口
淳次 高井
敏郎 横山
Original Assignee
三菱自動車工業株式会社
三菱自動車エンジニアリング株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱自動車工業株式会社, 三菱自動車エンジニアリング株式会社 filed Critical 三菱自動車工業株式会社
Priority to JP2016565765A priority Critical patent/JP6296374B2/ja
Priority to PCT/JP2014/084347 priority patent/WO2016103407A1/fr
Publication of WO2016103407A1 publication Critical patent/WO2016103407A1/fr

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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
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto

Definitions

  • the present disclosure relates to V-engines.
  • Patent Document 1 discloses a V-type engine having two types of injectors.
  • the V-type engine of Patent Document 1 includes, for each cylinder, an injector (in-cylinder injector) that directly injects fuel into the combustion chamber and an injector (intake pipe injector) that injects fuel into the intake passage.
  • the intake port of each bank of the V-type engine opens into the bank, and the intake manifold (intake manifold) is provided from a surge tank provided at the top of one bank (left bank) to both banks.
  • An intake manifold extends to each intake port.
  • the intake pipe injector is provided outside the intake manifold, and the in-cylinder injector is provided inside the intake manifold.
  • the intake pipe injector of Patent Document 1 is provided in a narrow space between the in-manifold and the respective banks located on the outside thereof. Therefore, the installation angle of the intake pipe injector is limited by the manifold and the bank, and it may be difficult to install the intake pipe injector so as to have a desired angle. In addition, since the installation space of the intake pipe injector is narrow in this way, the work of attaching the intake pipe injector becomes more difficult than when the installation space is wider, and the work procedure for installing the intake pipe injector is also Limited And such a concern becomes remarkable as the engine is miniaturized.
  • At least one embodiment of the present invention aims to provide a V-type engine capable of increasing the degree of freedom of the installation area and the installation angle of the intake passage injection device.
  • a V-type engine is a V-type engine including a pair of banks consisting of a first bank and a second bank, wherein the V-type engine is opened between the pair of banks A plurality of first side intake ports of one bank, a plurality of second side intake ports of the second bank opened respectively between the pair of banks, and a pair of first side intake ports are connected.
  • a first manifold passage portion comprising a plurality of branch passages extending upward along the first bank from between the banks of the second bank and the second side intake port, and the second manifold passage from the pair of banks
  • the fuel injection system according to the present invention is configured to inject fuel into a second manifold including a plurality of branch channels extending upward along the bank, and the first inlet including the first side intake port and the first manifold.
  • a second side intake path injection device configured to inject fuel into a second side intake path including the second side intake port and the second manifold passage portion, the first side
  • the intake passage injection device is disposed between the first side intake passage and the second side intake passage on a first side projection portion which is a portion of the first side intake passage that most protrudes toward the second bank.
  • the second side intake passage injection device is provided between the first side intake passage and the second side intake passage at a portion that protrudes most toward the first bank of the second side intake passage. It is provided at a second side projection.
  • each of the intake passage injectors of the first bank and the second bank (the first side intake passage injectors and the second side intake passage injectors) is between the pair of banks (banks In the bank space such as the inner space and the upper space (between the banks) in the bank, it is provided at the most projecting portion (first side protruding portion, second side protruding portion).
  • This can increase the degree of freedom of the installation area and the installation angle of the intake passage injection device. Therefore, fuel injection can be easily realized at a preferable injection angle, and fuel consumption can be improved.
  • the intake passage injection device includes an intake passage (first side intake passage) including an intake port (first side intake port, second side intake port) and a manifold passage portion (first manifold passage portion, second manifold passage portion).
  • the second side intake passage The first bank, the second bank, and the manifold passage function as a protective wall, and the protective wall can protect the intake passage injection device.
  • the opening of the first side intake port and the opening of the second side intake port face upward.
  • the manifold passage extending upward along the side surface of each of the first bank and the second bank is connected to the intake port opening upward, so the cylinder head has a protrusion It includes an intake port formed in Therefore, since the intake passage injection device can be fixed to the cylinder head, the installation stability of the intake passage injection device can be enhanced, and the reliability of the V-type engine can be enhanced.
  • the first side protruding portion connects the opening of the first side intake port and the opening of the first manifold passage portion.
  • the second side protrusion is a connection portion where the opening of the second side intake port and the opening of the second manifold passage portion are connected.
  • a first side in-cylinder injection device configured to inject fuel directly, and provided between the pair of banks below the second side intake passage injection device, and directly injects the fuel into the combustion chamber of the second bank
  • a second in-cylinder injector configured to:
  • the axis of the cylinder formed in each of the pair of banks is the same direction as the crankshaft rotation direction with respect to the crankshaft center Offset to According to the configuration of the above (5), by utilizing the height difference between the pair of banks caused by the above offset, the intake passages of the first bank and the second bank are prevented without causing mutual interference such as collision with each other.
  • An injector (a first side intake passage injector, a second side intake passage injector) can be installed in the bank space.
  • the first side intake passage injection device and the second side intake passage injection device are disposed mutually offset in the front-rear direction Ru. According to the configuration of the above (6), even when the pinch angle (bank angle) of the pair of banks is narrow, the one-side intake passage injector and the two-side intake passage injector can be arranged in the bank space .
  • a V-type engine is provided in which the installation area and the installation angle of the intake passage injection device are increased.
  • FIG. 1 is a front view of a V-type engine according to an embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view of the V-type engine in FIG.
  • FIG. 2 is a side view of a portion above the cylinder head portion of the V-type engine in FIG. 1; It is a perspective view of an intake passage injection device concerning one embodiment of the present invention.
  • FIG. 5 is a side view of the intake passage injector of FIG. 4; It is a top view of V-type engine of FIG.
  • expressions that indicate that things such as “identical”, “equal” and “homogeneous” are equal states not only represent strictly equal states, but also have tolerances or differences with which the same function can be obtained. It also represents the existing state.
  • expressions representing shapes such as quadrilateral shapes and cylindrical shapes not only represent shapes such as rectangular shapes and cylindrical shapes in a geometrically strict sense, but also uneven portions and chamfers within the range where the same effect can be obtained. The shape including a part etc. shall also be expressed.
  • the expressions “comprising”, “having”, “having”, “including” or “having” one component are not exclusive expressions excluding the presence of other components.
  • FIG. 1 is a front view of a V-type engine 1 according to an embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view of the V-type engine in FIG.
  • FIG. 3 is a side view of a portion above the cylinder head portion 3 of the V-type engine 1 in FIG.
  • FIG. 4 is a perspective view of an intake manifold injector 4 in some embodiments.
  • FIG. 5 is a side view of the intake passage injector 4 of FIG. 6 is a plan view of the V-type engine of FIG.
  • the V-type engine 1 (hereinafter referred to as the engine 1) includes an intake port 32 (a first side intake port 32a and a second side intake port 32b) and a manifold passage 52 (a first manifold).
  • a passage portion 52a, a second manifold passage portion 52b, and an intake passage injection device 4 (a first side intake passage injection device 4a, a second side intake passage injection device 4b) are provided.
  • the engine 1 is a six-cylinder V-type engine in the example of FIG. 1, and has a first bank 12a (right bank in FIG. 1) and a second bank 12b each having three cylinders 23 (cylinders) arranged in series. (The left bank in FIG. 1) is arranged in a V-shape (V-shape), and both banks (12a, 12b) share one crankshaft 15.
  • the engine body 11 of the engine 1 is composed of a V-shaped cylinder block portion 2 and a cylinder head portion 3.
  • the cylinder block portion 2 has a V-shaped deck cylinder portion 21 and a crankcase portion 22 common to both banks (12 a and 12 b) provided at the lower part of the deck cylinder portion 21.
  • the upper deck surface 26 which is a surface on which the cylinder head portion is mounted is provided on both V-shaped head portions of the deck cylinder portion 21, and a plurality of the above-described plurality are provided inside the deck cylinder portion 21.
  • a cylinder 23 is provided. Further, a crank shaft 15 is rotatably supported by the above-described crankcase portion 22.
  • a piston 24 slidably accommodated in each cylinder 23 is connected to the crankshaft 15 via a connecting rod 25.
  • crankshaft 15 rotates in the direction indicated by the arrow E that is clockwise around the axis center O of the crankshaft 15.
  • the cylinder block portion 2 may also include an oil pan 28 mounted so as to cover the lower opening of the crankcase portion 22.
  • a plurality of depressions (for example, a hemispherical shape or the like) positioned so as to correspond to each of the plurality of cylinders 23 are provided. Then, when the cylinder head portion 3 is mounted on the upper deck surface 26 of the deck cylinder portion 21, the plurality of cylinders 23 inside the deck cylinder portion 21 and the above-mentioned plurality of depressions respectively coincide with each other, thereby burning each cylinder 23.
  • a chamber 31 is formed. Further, by mounting the cylinder head portion 3 on the deck cylinder portion 21, a pair of banks 12 of the first bank 12a and the second bank 12b is formed.
  • the cylinder head portion 3 may include a rocker cover 37 mounted so as to close the head opening of each cylinder head portion 3 of each bank 12.
  • two intake and exhaust valves (not shown), an intake port 32 (described later) opened in the bank 13, and an exhaust port 35 are provided for each cylinder 23. . That is, the combustion chamber 31 of each cylinder 23 and the outside of the cylinder head portion 3 are respectively communicated by the intake port 32 (32a, 32b) which is a passage for guiding intake air to the combustion chamber 31. Configured to be controlled.
  • an exhaust port 35 which is a passage for guiding the combustion gas (exhaust gas) from the combustion chamber 31 to the outside, also communicates each combustion chamber 31 with the outside of each bank 12, and this communication state is controlled by the exhaust valve.
  • the exhaust ports 35 may communicate with the respective combustion chambers 31 by extending to other than the inside of the bank 13 such as the side opposite to the inside of the bank 13 where the intake port 32 is provided. Further, the intake port 32 and the exhaust port 35 are branched into two inside each and connected to the combustion chamber 31, and one intake valve and one exhaust valve are provided for each branch.
  • the sandwich angle (bank angle) formed by the two banks 12 of the first bank 12a and the second bank 12b is about 60 degrees, and the space formed in the bank 13 has a bank angle of 90 ° C. It is narrower than things.
  • the bank angle is not limited to 60 degrees, but may be any angle such as 90 degrees.
  • the supercharger 8 may be provided between the banks, which is a space that extends above (above) the inside of the bank 13 in the vertical direction (hereinafter, the vertical direction) of the engine body 11.
  • the number of cylinders of the engine 1 is not limited to six, and may be a multi-cylinder engine having a plurality of cylinders.
  • the number of intake and exhaust valves for each cylinder 23 is also arbitrary, and may be one or more, and the number of branches inside the intake port 32 and the exhaust port 35 is also an intake valve and an exhaust port. It corresponds to the number of valves.
  • the intake port 32 includes a plurality of first side intake ports 32 a of the first bank 12 a that opens between the pair of banks 12 and a plurality of second side of the second banks 12 b that opens between the pair of banks 12. And a side intake port 32b. That is, as illustrated in FIG. 1, a plurality (three in FIG. 1) of intake ports 32 (first side intake ports 32 a) are provided in the first bank 12 a and each opens in the bank 13. Similarly, a plurality (three in FIG. 1) of intake ports 32 (second side intake ports 32b) are provided in the second bank 12b, and they are opened in the bank 13 respectively.
  • the intake port 32 is configured to be connected (connected) to a manifold passage portion 52 (intake manifold) that constitutes a part of an intake passage that supplies air to the combustion chamber 31.
  • the intake air (intake air) flowing through the intake passage is supplied to the intake port 32 from the manifold passage 52 located on the upstream side.
  • the opening 33 of the intake port 32 is configured to be connectable to the manifold passage portion 52, and is also configured to be able to connect the tip end portion 41 of the intake passage injection device 4 described later.
  • the opening 33 of the intake port 32 has such a base shape so that the tip end portion 41 of the intake path injection device 4 can be inserted (connected) on the basis of a shape conforming to the shape of the internal passage of the manifold passage portion 52 You may form so that one part may be spread (refer FIG. 3).
  • the manifold passage portion 52 is connected to each of the first side intake ports 32a, and includes a plurality of first manifold passage portions 52a each including a plurality of branch passages 53 extending upward from the pair of banks 12 along the first bank 12a. And a second manifold passage portion 52b formed of a plurality of branch passages 53 connected to the second side intake ports 32b and extending upward from the pair of banks 12 along the second bank 12b.
  • the first manifold passage portion 52a (a plurality of branch passages 53) extends from the opening 33 of the first side intake port 32a of the first bank 12a to the side surface of the first bank 12a forming the inside 13 of the bank.
  • the second manifold passage portion 52 b (plural branch passages 53) extends from the opening 33 of the second side intake port 32 b of the second bank 12 b along the side surface of the second bank 12 b forming the inside 13 of the bank It extends upward in the bank 13 without contacting the second bank 12b.
  • the first manifold passage 52 a is a front branch located on the front side (front side) of the engine body 11 in the front-rear direction (hereinafter, “front-rear direction”).
  • the branch passages 53 (63f, 63c, 63r) of the first manifold passage 52a are respectively connected to the three first side intake ports 32a of the first bank 12a while forming independent intake passages therein. It is done.
  • the second manifold passage 52b has a front branch passage 53f, a central branch passage 53c and a rear branch passage 53r, and each branch passage 53 of the second manifold passage 52b (not shown) 63f, 63c, 63r) are respectively connected to the three second side intake ports 32b of the second bank 12b while forming independent intake passages therein.
  • each branch passage 53 included in the first manifold passage 52a and the second manifold passage 52b is connected to each intake port 32, and the other end (upstream end) is the other intake
  • the manifold passage portion 52 forms a part of an intake passage for introducing air (fresh air) from the outside of the engine 1 to the combustion chambers 31 inside. That is, the first side intake passage 5a is formed by the first side intake port 32a and the first manifold passage portion 52a. Further, the second side intake passage 5b is formed by the second side intake port 32b and the second manifold passage portion 52b.
  • Each of the first side intake passage 5a and the second side intake passage 5b has a portion (protruding portion 51) that protrudes most toward the bank space in each shape. More specifically, as illustrated in FIG. 1, the first manifold portion 52a forming the first side intake passage 5a extends upward along the side surface of the first bank 12a, and the second side intake passage 5b The second manifold passage 52b to be formed extends upward along the side surface of the second bank 12b. Therefore, the first manifold passage portion 52a and the second manifold passage portion 52b are located outside the engine main body 11 at the upper portion (upstream side in the flow direction of the intake air) than the connecting portion 54 with the opening 33 of the intake port 32.
  • the manifold passage 52 is connected to the opening 33 of the intake port at such a position and extends upward along each bank 12, so that the first side intake passage 5a and the second side intake passage 5b A shape (protruding portion 51) protruding toward the other bank 12 side is formed on the side wall.
  • the central axis of the intake port 32a is directed to the inside of the bank 13 in a front view of the engine 1 ( Toward the second bank 12b).
  • the central axis of each branch passage 53 constituting the first manifold passage portion 52a in the front view of the engine 1 is obliquely downward toward the inside of the bank 13 (to the second bank 12b) Are oriented.
  • the projection 51 is connected by connecting the opening 33 of the intake port 32a and the opening of the first manifold passage 52a at the intersection of the center axis of the intake port 32a and the center shaft of the first manifold passage 52a. It is formed.
  • a similar shape is also formed on the second bank 12b side. That is, in the intake port 32b of the second bank 12b, the center axis of the intake port 32b in the front view of the engine 1 is directed obliquely upward toward the in-bank 13 (to the first bank 12a).
  • the central axis of each branch passage 53 constituting the second manifold passage 52b in the front view of the engine 1 is directed obliquely downward toward the inside of the bank 13 (toward the first bank 12a).
  • the opening 51 of the intake port 32b and the opening of the second manifold passage 52b are connected at the intersection of the center axis of the intake port 32b and the center shaft of the second manifold passage 52b, whereby the protrusion 51 is formed. It is formed.
  • the first side intake passage 5a connected to the first bank 12a has a shape projecting toward the second bank 12b
  • the second side intake passage 5b connected to the second bank 12b is the second It has a shape projecting to the side of one bank 12a.
  • the intake path injection device 4 is provided on the projecting portion 51.
  • the intake passage injection device 4 will be described.
  • the intake passage injection device 4 is configured to receive fuel into the first side intake passage 5a (the first side intake passage 5a consisting of the first side intake port 32a and the first manifold passage 52a).
  • the fuel is supplied to the first side intake passage injector 4a configured to inject and the second side intake passage 5b (the second side intake passage 5b including the second side intake port 32b and the second manifold passage portion 52b).
  • a second side intake path injector configured to inject.
  • the fuel injection port 43 for injecting fuel by the tip 41 of the intake passage injector 4 extending to the inside of the intake port 32 is an intake port. It may be located inside 32 and configured to inject fuel into the intake port 32 thereby.
  • the intake passage injection device 4 is provided between the first manifold passage 52a and the second manifold passage 52b as illustrated in FIG. Also good.
  • a low pressure fuel supply pipe 44 is connected to the intake passage injection device 4, and fuel (low pressure fuel) is supplied in a low pressure state from a fuel tank (not shown) via the low pressure fuel supply pipe 44 and the fuel pipe 46. Be done. That is, the fuel supplied through the fuel pipe 46 is temporarily supplied to the low pressure fuel supply pipe 44 for each bank 12, and the low pressure fuel supply pipe 44 causes the respective intake passage injectors 4 (in the example of FIG. 3) for each bank 12). As shown in FIG. 2, the fixing member 45 may be used to fix the manifold passage 52.
  • the first side low pressure fuel supply pipe 44a for the first bank 12a and the second side low pressure fuel supply pipe 44b for the second bank 12b A plurality of intake passage injectors 4 are connected to one another (three in FIGS. 1 to 4). That is, the first low-pressure fuel supply pipe 44a and the second low-pressure fuel supply pipe 44b have a long shape in the front-rear direction in accordance with the shape of the bank 12. And in order to supply fuel to the combustion chamber 31 of each cylinder 23 which each bank 12 has, a plurality of intake passage injection devices 4 are provided in the first side low pressure fuel supply pipe 44a and the second side low pressure fuel supply pipe 44b. Each is linked.
  • the fuel pipe 46 may be connected to one longitudinal end (the forward direction in the front and rear direction in the example of FIG. 4) of each low pressure fuel supply pipe 44 (44a, 44b).
  • the two fuel pipes 46 to be combined may be connected upstream to a fuel pump (not shown) after being merged into one.
  • the first side intake passage injection device 4a and the second side intake passage injection device 4b are respectively provided in the projecting portion 51 of the first side intake passage 5a and the second side intake passage 5b. That is, the first side intake passage injection device 4a is a portion that protrudes most toward the second bank of the first side intake passage 5a between the first side intake passage 5a and the second side intake passage 5b.
  • the second side intake passage injection device is provided in the first side projecting portion 51a, and the second side intake passage injection device is configured to set the first side of the second side intake passage 5b between the first side intake passage 5a and the second side intake passage 5b. It is provided in the 2nd side projection part 51b which is a portion which protrudes most to the bank side.
  • the tip end portion 41 of the intake path injection device 4 is inserted into the opening 33 of the intake port 32 opening upward.
  • the fuel injection port 43 of the intake passage injection device 4 is located inside the intake port 32.
  • the intake passage injection device 4 is configured to inject the fuel into the intake passage (first side intake passage, second side intake passage).
  • first manifold passage portion 52a and the second manifold passage portion 52b extend upward along the banks 12, respectively, whereby a bank space consisting of the inside of the banks 13 and between the banks is formed widely. . Since the intake path injection device 4 is provided in such a bank space, there are few obstacles when installing the intake path injection device 4, and it becomes possible to install the intake path injection device 4 at various angles. . Furthermore, the two banks 12 are positioned on the outer periphery in the left-right direction of the intake path injection device 4, and the first manifold passage 52a and the second manifold passage 52b are positioned, and these function as protective walls. It will be.
  • each of the intake passage injectors 4 (the first side intake passage injector 4 a and the second side intake passage injector 4 b) of the first bank 12 a and the second bank 12 b is a pair of banks 12.
  • the bank space such as the space (within the bank 13) and the space above the inside of the bank 13 (between the banks), they are provided in the most projecting portions (first side protrusion 51a and second side protrusion 51b).
  • the intake passage injection device 4 includes an intake port 32 (a first side intake port 32a, a second side intake port 32b) and a manifold passage portion 52 (a first manifold passage portion 52a, a second manifold passage portion 52b). It is provided inside the passage 5 (the first side intake passage 5a and the second side intake passage 5b). Therefore, the first bank 12a, the second bank 12b, and the manifold passage 52 function as a protective wall, and the protective wall can protect the intake passage injection device 4.
  • the opening 33 of the first side intake port 32a and the opening 33 of the second side intake port 32b face upward. That is, when the opening 33 of the intake port 32 is directed upward, the protrusion 51 includes the cylinder head portion 3 in which the opening 33 of the intake port 32 is formed. Therefore, the intake path injection device 4 can be installed in the cylinder head portion 3. For example, as described above, by widening the opening 33 of the intake port 32 provided in the cylinder head 3 to a part of the base shape, the distal end of the intake passage injector 4 can be inserted, You may provide in the cylinder head part 3. FIG.
  • the intake passage injection device 4 can be fixed to the intake port 32 formed in the cylinder head portion 3, the installation stability of the intake passage injection device 4 can be enhanced. The reliability of the engine 1 can be improved.
  • the opening 33 of the intake port 32 may not face upward, and the protrusion 51 may be formed in the manifold passage 52 or the cylinder head 3. Therefore, the intake passage injection device 4 is provided in the manifold passage portion 52 and the cylinder head portion 3.
  • the first side protrusion 51 a may be connected such that the opening 33 of the first side intake port 32 a and the opening of the first manifold passage 52 a are connected.
  • the second side protruding portion 51b is a connecting portion 54 in which the opening 33 of the second side intake port 32b and the opening of the second manifold passage portion 52b are connected.
  • the opening 33 of the intake port 32 may not face upward, and the protrusion 51 may be formed in the manifold passage 52 or the cylinder head 3. Therefore, the intake passage injection device 4 is provided in the manifold passage portion 52 and the cylinder head portion 3.
  • FIG. 1 it is provided below the first side intake passage injection device 4a between the pair of banks 12 and in the combustion chamber 31 of the first bank 12a. It is provided below the second side intake passage injection device 4b between the pair of banks 12 with the first side in-cylinder injection device 6a configured to inject fuel directly, and in the combustion chamber 31 of the second bank 12b. And a second side in-cylinder injection device 6b configured to inject fuel directly.
  • the cylinder head portion 3 is configured such that the in-cylinder injection device 6 can be inserted from the side that forms the inside 13 of the bank, and the fuel injection port of the in-cylinder injection device 6 to be inserted 63 is configured to face the combustion chamber 31.
  • the tip 61 of the in-cylinder injection device 6 inserted into the cylinder head 3 extends toward the combustion chamber 31 so that the fuel injection port 63 at the tip of the tip 61 opens to the combustion chamber 31. It is configured to Further, as shown in FIG. 2, the in-cylinder injection device 6 (tip portion 61) may be installed inside the cylinder head portion 3 along the intake port 32.
  • a high pressure fuel supply chamber 64 pressure accumulation chamber is connected to the in-cylinder injection device 6, and fuel in a high pressure state from a fuel tank (not shown) via the high pressure fuel supply chamber 64 and a supply pump (not shown).
  • (High-pressure fuel) is supplied.
  • fuel in the fuel tank is supplied to the high pressure fuel supply chamber 64 by a supply pump (not shown), and fuel is supplied from the supply pump to the high pressure fuel supply chamber 64 at a predetermined pressure according to the rotational speed of the engine 1 Also good.
  • the fuel may be adjusted to a predetermined fuel pressure in the high pressure fuel supply chamber 64, and the high pressure fuel controlled to the predetermined fuel pressure may be supplied from the high pressure fuel supply chamber 64 to the in-cylinder injection device 6.
  • high pressure and the low pressure used in the description of the intake passage injection device 4 and the in-cylinder injection device 6 mean relative pressures when the two are compared.
  • high pressure fuel means higher pressure than low pressure fuel
  • low pressure fuel means lower pressure than high pressure fuel.
  • the intake path injection device 4 and the in-cylinder injection device 6 are provided in the V-type engine 1, it is possible to perform the fuel injection suitable for the operation situation. Further, since the in-cylinder injection device 6 is provided in the bank 13, the in-cylinder injection device 6 can be protected by the protective walls of both banks 12 as in the intake passage injection device 4.
  • the engine 1 is an axis of a cylinder 23 (cylinder) formed in each of a pair of banks 12 consisting of a first bank 12 a and a second bank 12 b.
  • the axis L) is offset in the same direction as the rotational direction of the crankshaft 15 (the direction of the arrow E) with respect to the crankshaft center (axial center O of the crankshaft 15).
  • each deck cylinder is maintained while maintaining the length (deck height H) from the axial center O of the crankshaft 15 to the upper deck surface 26 of the cylinder block portion 2.
  • the plurality of cylinder axis lines L of the portion 21 are moved in parallel (offset) in the same direction as the rotational direction E of the crankshaft 15 with respect to the axial center O of the crankshaft 15 by the offset amount ⁇ . Note that, in FIG. 1, the plurality of cylinder axis lines L and the plurality of cylinder axis lines L ⁇ b> 1 are each shown to overlap with the one on the front side.
  • the offset causes the first bank 12a on the front side in the rotational direction E to be higher than the position of the normal engine, and the second bank 12b on the rear side in the rotational direction E to be lower.
  • the height difference between the position of the opening 33 and the position of the opening 33 of the second side intake port 32b having the height H2 is H1-H2 (H1> H2).
  • the offset amount ⁇ is the same in the first bank 12a and the second bank 12b, but in some other embodiments, the offset amount ⁇ is different in the first bank 12a and the second bank 12b. It may be an offset amount ⁇ .
  • the intake path injection device 4 and the in-cylinder injection device 6 are provided in the bank space of the pair of banks 12 having the height difference due to the offset. Then, the intake passage injectors 4 of the two banks 12 and the in-cylinder injectors 6 of the two banks 12 are associated with the height difference between the two banks 12 caused by the offset described above.
  • the vertical position is different. That is, the intake passage injectors 4 provided in the first bank 12a are located above the intake passage injectors 4 provided in the second bank 12b in the vertical direction.
  • the in-cylinder injection device 6 provided in the first bank 12 a is positioned above in the vertical direction than the in-cylinder injection device 6 provided in the second bank 12 b.
  • the positions of the intake port 32 in the cylinder head portion 3, the positions of the intake path injection device 4 and the low pressure fuel supply pipe 44, and the positions of the in-cylinder injection device 6 and the high pressure fuel supply chamber 64 The same applies to the one bank 12a and the second bank 12b. However, according to the height difference between the two banks 12, their vertical positions are different. In the example of FIGS. 1 to 3, since the first bank 12a is positioned above the second bank 12b, the first side intake port 32a of the first bank 12a, the intake path injection device 4, and the low pressure fuel The supply pipe 44 is located above the second side intake port 32b of the second bank 12b, the intake passage injector 4 and the low pressure fuel supply pipe 44, respectively.
  • the in-cylinder injection device 6 and the high pressure fuel supply chamber 64 of the first bank 12a are located above the in-cylinder injection device 6 and the high pressure fuel supply chamber 64 of the second bank 12b, respectively.
  • the injection device can be installed in a bank space such as a space between the pair of banks 12 (within the bank 13) and a space above the bank 13 (between the banks).
  • the intake passages of the first bank 12a and the second bank 12b are prevented without causing mutual interference such as collision with each other.
  • the injector 4 (the first side intake passage injector 4a, the second side intake passage injector 4b) can be installed in the bank space.
  • the intake path injection device 4 and the in-cylinder injection device 6 can be common to both the first bank 12a and the second bank 12b, it is possible to use each for the first bank 12a and the second bank 12b. There is no need to design and manufacture, and the cost can be reduced.
  • the first side intake passage injector 4 a and the second side intake passage injector 4 b are disposed mutually offset in the front-rear direction. Ru. That is, as shown in FIG. 5, the intake passage injectors 4a connected to the low pressure fuel supply pipes 44a of the first bank 12a at substantially equal intervals, and the low pressure fuel supply pipes 44b of the second bank 12b at approximately equal intervals. The position in the front-rear direction of the intake path injection device 4b to be connected does not match. In the example of FIG. 5, the intake passage injectors 4a of the first bank 12a are relatively forward in the front-rear direction, and the intake passage injectors 4b of the second bank 12b are relatively backward. Therefore, both are shifted in the front-rear direction.
  • the in-cylinder injection device 6a and the in-cylinder injection device 6b may be mutually offset in the front-rear direction Good. That is, as shown in FIG. 5, the in-cylinder injectors 6a connected to the high pressure fuel supply chambers 64a of the first bank 12a at substantially equal intervals, and the high pressure fuel supply chambers 64b of the second banks 12b at approximately equal intervals.
  • the position in the front-rear direction of the in-cylinder injection device 6b to be connected does not match.
  • the in-cylinder injectors 6 a of the first bank 12 a are relatively forward in the longitudinal direction
  • the in-cylinder injectors 6 b of the second bank 12 b are relatively backward. Therefore, both are shifted in the front-rear direction.
  • the shift width W in the front-rear direction of both banks 12 may be used. That is, as shown in the plan view of FIG. 6, in the longitudinal direction of the engine body 11, the engine 1 has the first bank 12a positioned relatively forward and the second bank 12b positioned relatively rearward. doing. This is because, in the V-type engine 1, one crankshaft 15 is shared by the two banks 12, so that the first bank 12 a and the first bank 12 a are connected so that the connecting rod 25 does not interfere in the front-rear direction.
  • the second bank 12b is offset in the front-rear direction. Therefore, the positions of the first bank 12a and the second bank 12b in the front-rear direction are relatively shifted by the shift width W.
  • the first side intake passage injection device 4a and the second side intake passage injection device 4b can be disposed in the bank space .
  • the other intake passages 9 connected to the upstream side of the first manifold passage 52a and the second manifold passage 52b are the main ones as illustrated in FIGS. 1 to 3. It may be the passage part 7.
  • the configuration of the main passage portion 7 will be described.
  • the main passage portion 7 connects the first manifold passage portion 52a and the second manifold passage portion 52b to the supercharger 8 provided above the two banks 12 and connected to each other. It is comprised so that it may be connected. More specifically, the main passage portion 7 is shaped so as to surround the upper portion of the space between the banks 12 and both left and right sides in the left-right direction of the engine body 11. The space surrounded by the main passage portion 7
  • the supercharger 8 is installed in the Further, the discharge port 84 of the turbocharger 8 is connected to the central portion of the main passage portion 7 extending in the left and right direction so as to cover the upper portion of the turbocharger 8. 13 is located. As described above, the intake port 84 of the supercharger 8 is directed upward, and the intake air discharged upward is divided and introduced into the first manifold passage 52a and the second manifold passage 52b. Be done.
  • the main passage portion 7 moves the intake air discharged upward from the discharge port 84 of the turbocharger 8 in both directions (in FIG. 1, left and right directions in the left and right direction) of the engine body 11 facing each other.
  • an upper and lower portion 72 (two on both the left and right sides) configured to guide the intake air distributed in both the left and right directions by the outward And two collecting portions 73 (two on the left and right) configured to return the intake air flowing out from the upper and lower portions 72 in the direction toward the inside of the engine main body 11, respectively.
  • the intake passage passes through the upper and lower portions 72 and the collecting portion 73, respectively. It is led to 52 (62a, 62b). Note that, as shown in FIG. 1, a space (air layer) between the upper and lower portions 72 and the turbocharger 8 due to the outward portion 71 and the gathering portion 73 extending outside the upper surface of the turbocharger 8 or the like. May be formed.
  • a rib portion 76 extending in the front-rear direction so as to face the discharge direction of intake air from the discharge port 84 of the turbocharger 8 is It may be provided.
  • the rib portion 76 plays a role of reinforcing the outward portion 71 and a role of a guide for distributing the above-described intake air in the left and right direction. That is, the rib 76 is positioned where the high pressure intake from the supercharger 8 collides, thereby increasing the strength of the main passage 7, and the intake along the smooth projecting shape of the rib 76. It is configured to flow in both left and right directions.
  • all may be manufactured (formed) of the same material, such as a metal material such as aluminum or a resin material, the outward portion 71 and the collecting portion 73 are manufactured of a metal material, and the upper and lower portions 72 are formed of resin.
  • the material may be changed for each part such as manufacturing.
  • an intercooler 74 may be provided inside the intake passage formed by the upper and lower portions 72, and the air density due to the temperature rise can be reduced by cooling the temperature of intake air rising due to supercharging by the supercharger 8 or the like. Can prevent the decrease.
  • the intercooler 74 is water cooled, and the intercooler 74 is connected to a cooling passage for circulating a cooling medium such as cooling water inside the intercooler 74.
  • Two cooling passage connection ports 75 are provided.
  • the cooling medium may be introduced from the lower cooling passage connection port 75 and discharged from the upper cooling passage connection port 75.
  • the upper and lower portions 72 may be provided with a plurality of pillars 77 for reinforcing the upper and lower portions 72, and in particular, when the turbocharger 8 is suspended from the outward portion 71, the outward portion Since the upper and lower portions 72 support the weight 71 and the entire weight of the turbocharger 8, the strength of the upper and lower portions 72 is enhanced by the column portion 77.
  • six columns 77 are used according to the upper and lower portions 72 having a shape like a square pole, and four columns positioned at each corner of the upper and lower portions 72 One each may be provided in the front-rear direction of
  • the supercharger 8 is a supercharger (mechanical supercharger) in the embodiment shown in FIGS. Then, as shown in FIG. 2, it is configured to include the turbocharger main body 81 and the drive shaft 82, and while the turbocharger main body 81 is surrounded by the main passage portion 7, the drive shaft 82 is excessive. It is attached to the turbocharger main body 81 so as to project forward from the front surface of the feeder main body 81.
  • the supercharger will be described.
  • the two rotors housed inside the supercharger main body 81 supercharge the intake by being rotationally driven by the power of the engine.
  • the aforementioned rotor is attached to one of the drive shaft 82 in the axial direction, and a pulley 83 is attached to the other end of the drive shaft 82.
  • the pulley 83 is connected to the output shaft of the engine 1 by a belt or the like, and the pulley 83 connected by the belt or the like is rotationally driven by the rotation of the output shaft of the engine 1.
  • the rotor is rotationally driven. Then, by rotating so that the two rotors mesh inside the turbocharger main body 81, the intake air is supercharged, and high-pressure intake air is discharged from the discharge port 84.
  • the turbocharger 8 may be a turbocharger (exhaust turbine turbocharger).
  • the supercharger 8 is suspended (suspended) in the main passage portion 7 that covers the upper portion thereof. That is, the engine 1 has a structure for supporting the supercharger 8 such as supporting the lower part of the supercharger 8 from the lower side, for example, other than the connection part between the main passage 7 and the discharge port 84 of the supercharger 8. I did not. In some other embodiments, the engine 1 includes other structures for supporting the turbocharger 8, and the turbocharger 8 may not be suspended.
  • another intake passage 9 is connected to the intake port 85 of the turbocharger 8.
  • a throttle device 93 may be connected to another intake passage 9, and further upstream thereof, an intake duct (air cleaner or air intake for cleaning air) (Not shown) may be provided.
  • a bypass passage 91 may be provided on the back of the turbocharger 8 and a flow path of the bypass passage 91 may also be provided with a bypass valve 92 for controlling the communication state of the bypass passage 91.
  • a throttle device 93 for controlling an intake amount on the upstream side of the turbocharger 8 or an EGR valve used in an EGR device may be provided.
  • the main passage portion 7 and the supercharger play a role of a protective wall, and by this protective wall, the fuel injection device (the intake passage injection device 4 and the in-cylinder injection device 6) and the fuel supply device (low pressure fuel supply pipe) It may be configured to protect the protection around 44 and the high pressure fuel supply chamber 64).
  • the first manifold passage 52a has three branch passages of a front branch passage 53f, a central branch passage 53c and a rear branch passage 53r.
  • the front branch passage 53f and the central branch passage 53c, and the rear branch passage 53r and the central branch passage 53c are connected by a connecting wall 55, respectively.
  • illustration is omitted, also in the second manifold passage 52b, between the front branch passage 53f and the central branch passage 53c and between the rear branch passage 53r and the central branch passage 53c, respectively. It is connected by the connecting wall 55.
  • the present invention is not limited to the above-described embodiments, and includes the embodiments in which the above-described embodiments are modified, and the embodiments in which these embodiments are appropriately combined.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

　L'invention concerne un moteur en V qui est pourvu d'une paire de bancs, comportant un premier banc et un second banc, et qui comprend : une pluralité d'orifices d'admission de premier côté du premier banc, qui s'ouvrent entre la paire de bancs; une pluralité d'orifices d'admission de second côté du second banc, qui s'ouvrent entre la paire de bancs; une première partie de passage de collecteur reliée à chacun des orifices d'admission de premier côté et comprenant une pluralité de passages de collecteur qui s'étendent vers le haut, en commençant entre la paire de bancs, et le long du premier banc; une seconde partie de passage de collecteur reliée à chacun des orifices de second côté et comprenant une pluralité de passages de collecteur qui s'étendent vers le haut, en commençant entre la paire de bancs, et le long du second banc; un dispositif d'injection de carburant de passage d'admission de premier côté, qui est configuré de manière à injecter du carburant dans un passage d'admission de premier côté, comprenant les orifices d'admission de premier côté et la première partie de passage de collecteur; un dispositif d'injection de carburant de passage d'admission de second côté, qui est configuré de manière à injecter du carburant dans un passage d'admission de second côté, comprenant les orifices d'admission de second côté et la seconde partie de passage de collecteur. Le dispositif d'injection de carburant de passage d'admission de premier côté est disposé, entre le passage d'admission de premier côté et le passage d'admission de second côté, sur une partie en saillie de premier côté, qui fait saillie le plus loin vers le second banc à partir du premier passage d'admission. Le dispositif d'injection de carburant de passage d'admission de second côté est disposé, entre le passage d'admission de premier côté et le passage d'admission de second côté, sur une partie en saillie de second côté, qui fait saillie le plus loin vers le premier banc sur le second passage d'admission.
PCT/JP2014/084347 2014-12-25 2014-12-25 Moteur en v WO2016103407A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2609297B2 (ja) * 1988-07-29 1997-05-14 マツダ株式会社 Ｖ型エンジンの吸気構造
JP2002048035A (ja) * 2000-08-02 2002-02-15 Yamaha Motor Co Ltd 過給機付筒内噴射エンジン
JP4042635B2 (ja) * 2003-06-05 2008-02-06 三菱自動車工業株式会社 Ｖ型エンジン

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63202769U (fr) * 1987-06-18 1988-12-27
JP2005009380A (ja) * 2003-06-18 2005-01-13 Mitsubishi Motors Corp Ｖ型エンジン
JP4085923B2 (ja) * 2003-08-04 2008-05-14 三菱自動車工業株式会社 Ｖ型エンジン
BRPI0609521A2 (pt) * 2005-03-18 2010-04-13 Yamaha Motor Co Ltd motor de injeção de combustìvel de sistema dual
JP4728195B2 (ja) * 2006-09-20 2011-07-20 ヤマハ発動機株式会社 エンジンの吸気制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2609297B2 (ja) * 1988-07-29 1997-05-14 マツダ株式会社 Ｖ型エンジンの吸気構造
JP2002048035A (ja) * 2000-08-02 2002-02-15 Yamaha Motor Co Ltd 過給機付筒内噴射エンジン
JP4042635B2 (ja) * 2003-06-05 2008-02-06 三菱自動車工業株式会社 Ｖ型エンジン

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