WO2016103404A1 - Moteur de type en v - Google Patents

Moteur de type en v Download PDF

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Publication number
WO2016103404A1
WO2016103404A1 PCT/JP2014/084344 JP2014084344W WO2016103404A1 WO 2016103404 A1 WO2016103404 A1 WO 2016103404A1 JP 2014084344 W JP2014084344 W JP 2014084344W WO 2016103404 A1 WO2016103404 A1 WO 2016103404A1
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WO
WIPO (PCT)
Prior art keywords
bank
injection device
port
cylinder
pressure fuel
Prior art date
Application number
PCT/JP2014/084344
Other languages
English (en)
Japanese (ja)
Inventor
武広 西殿
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 PCT/JP2014/084344 priority Critical patent/WO2016103404A1/fr
Priority to JP2016565762A priority patent/JP6296373B2/ja
Publication of WO2016103404A1 publication Critical patent/WO2016103404A1/fr

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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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
    • 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

Definitions

  • This disclosure relates to a V-type engine.
  • Patent Document 1 discloses a V-type engine in which the axis of a cylinder formed in each of a pair of banks including a first bank and a second bank is offset in the same direction as the rotation direction of the crankshaft with respect to the crankshaft. It is disclosed. More specifically, in a normal engine without offset, the cylinder axis of each of the V-shaped deck cylinder portions forming a pair of banks is located at a position passing through the axis center of the crankshaft. On the other hand, in the V-type engine having the above-described offset, the length (deck height) from the center of the crankshaft to the deck surface (upper deck surface) of the cylinder block (deck cylinder portion) is maintained.
  • each deck cylinder By translating the axis of each deck cylinder in the same direction as the direction of rotation of the crankshaft with respect to the center of the crankshaft, each deck cylinder can remain in the same direction (with the bank angle maintained) Shifted in the same direction (offset).
  • the intake system in order to increase the durability reliability against roll vibration during engine operation, in order to reduce the distance from the center of roll vibration, the intake system is located near the overhead of the bank shifted to the lower side by this offset. It is also disclosed to dispose electronic precision functional parts to be assembled in the box.
  • Patent Document 2 discloses a configuration of an injector provided in a V-type engine.
  • an injector in-cylinder injector
  • an injector intake pipe injector
  • intake pipe injector injector that injects fuel into an intake passage
  • both the in-cylinder injector and the intake pipe injector are disposed in the bank. Further, the intake ports of both banks are opened in the bank, and the intake manifold extends from the surge tank provided in the upper part of one bank (left bank) to the intake port.
  • the in-cylinder injector is installed in the V bank and inside the intake manifold, while the intake pipe injection injector is installed in the V bank and outside (outer peripheral side) of the intake manifold. .
  • Patent Document 1 aims to improve durability reliability against roll vibration of precision functional parts mounted on an offset V-type engine.
  • Patent Document 2 discloses a V-type engine in which two types of injectors, an in-cylinder injector and an intake pipe injector, are arranged.
  • the V-type engine disclosed in Patent Document 2 has the above offset. Is not provided.
  • At least one embodiment of the present invention is configured such that the axis of the cylinder formed in each of the pair of banks including the first bank and the second bank is the rotation direction of the crankshaft with respect to the crankshaft.
  • An object of the present invention is to provide a V-type engine that is offset in the same direction and includes two types of fuel injection devices between the offset banks.
  • the rotation direction of the crankshaft is set with respect to the axis of the cylinder formed in each of the pair of banks including the first bank and the second bank.
  • a port injection device configured to inject fuel into an intake port provided for each cylinder and opening between the pair of banks.
  • an in-cylinder injection device provided for each cylinder and configured to inject fuel directly into the combustion chamber.
  • the heights of the first bank and the second bank differ depending on the offset
  • the port injection device and the in-cylinder injection device are the same as those of the V-type engine. It is connected to an intake port that opens between a pair of banks. That is, the port injection devices and the in-cylinder injection devices of the first bank and the second bank are provided in a bank space such as a space between a pair of banks (inside the bank) or an upper space in the bank (between the banks).
  • a bank space such as a space between a pair of banks (inside the bank) or an upper space in the bank (between the banks).
  • the port injection device and the in-cylinder injection device can be arranged in the bank space.
  • the first bank and the second bank serve as protective walls on both sides, and the protective wall protects the port injection device and the in-cylinder injection device. be able to. Further, since the port injection device and the in-cylinder injection device can be the same for both the first bank and the second bank, it is necessary to design and manufacture for each of the first bank and the second bank. In addition, the cost can be reduced.
  • the first side intake port that is the intake port of the first bank and the second side intake port that is the intake port of the second bank Each of the first side intake ports connected to each of the first side intake ports and extending upwardly along the first bank between the pair of banks, and the second side intake passage portion.
  • a plurality of branch passages connected to each of the ports and extending upwardly along the second bank between the pair of banks, and the port injection device includes It is provided between the first side manifold passage portion and the second side manifold passage portion.
  • the port injection device includes a manifold section (a first manifold section that is the manifold section of the first bank and a second manifold section that is the manifold section of the second bank). ).
  • the manifold passage portion serves as a protective wall, so that the protection of the port injection device and the in-cylinder injection device can be enhanced.
  • the first-side manifold passage portion includes a coupling wall that couples the branch passages adjacent to each other in the first-side manifold passage portion.
  • the second side manifold passage portion has a coupling wall that couples the branch passages adjacent to each other in the second side manifold passage portion.
  • a first low pressure connected to each of the port injectors of the first bank and supplying low pressure fuel to the port injectors
  • each of the in-cylinder injection devices of the first bank Connected to each of a first high-pressure fuel supply chamber that supplies high-pressure fuel to the in-cylinder injection device and the in-cylinder injection device of the second bank, and supplies high-pressure fuel to the in-cylinder injection device.
  • a second high-pressure fuel supply chamber, and the first low-pressure fuel supply pipe, the second low-pressure fuel supply pipe, the first high-pressure fuel supply chamber, and the second high-pressure fuel supply chamber include the pair of banks, The first side Surrounded with ⁇ path portion by said second side manifold passage portion.
  • the low-pressure fuel supply pipe and the high-pressure fuel supply chamber for supplying fuel to each of the first bank and the second bank include the pair of banks, the first side manifold passage portion, and the second bank. It is provided inside the space surrounded by the side manifold passage.
  • the fuel supply device low-pressure fuel supply pipe and high-pressure fuel supply chamber
  • the port injection device is provided above the in-cylinder injection device, and the port injection device of the first bank
  • the port injection devices of the second bank are arranged shifted in the front-rear direction
  • the in-cylinder injection device of the first bank and the in-cylinder injection device of the second bank are arranged shifted in the front-rear direction.
  • the port injection device and the in-cylinder injection device are spatially separated from each other in the vertical direction, and the port injection devices in the first bank and the second bank and the in-cylinder injection devices are also in a space. Therefore, the first bank and the second bank are alternately arranged by being shifted in the front-rear direction. For this reason, even when the sandwiching angle (bank angle) between the pair of banks is narrow, the port injection device and the in-cylinder injection device can be arranged in the bank space.
  • the sandwich angle between the first bank and the second bank is 60 degrees or less. According to the configuration of (6) above, even when the angle between the pair of banks is narrow, the fuel injection device (port injection device and in-cylinder injection device) and the fuel supply device are utilized by utilizing the height difference between the pair of banks.
  • the (low-pressure fuel supply pipe and high-pressure fuel supply chamber) can be arranged in the bank space, and these can also be protected.
  • a supercharger is further provided above the pair of banks.
  • the supercharger is provided above the pair of banks, so that the supercharger serves as a protective wall, and the fuel injection device (port injection device and The upper part of the in-cylinder injection device) and the fuel supply device (low pressure fuel supply pipe and high pressure fuel supply chamber) can be protected.
  • the periphery of the fuel injection device and the fuel supply device is surrounded by this configuration, and the protection function is enhanced.
  • a V-type engine that includes two types of fuel injectors between offset banks.
  • FIG. 2 is a partial cross-sectional view above the cylinder head portion of the V-type engine in FIG. 1. It is a side view of the part above the cylinder head part of the V-type engine in FIG. It is a perspective view of a port injection device and a cylinder injection device concerning one embodiment of the present invention.
  • FIG. 6 is a side view of the port injection device and the in-cylinder injection device of FIG. 5.
  • an expression indicating that things such as “identical”, “equal”, and “homogeneous” are in an equal state not only represents an exactly equal state, but also has a tolerance or a difference that can provide the same function. It also represents the existing state.
  • expressions representing shapes such as quadrangular shapes and cylindrical shapes represent not only geometrically strict shapes such as quadrangular shapes and cylindrical shapes, but also irregularities and chamfers as long as the same effects can be obtained. A shape including a part or the like is also expressed.
  • the expressions “comprising”, “comprising”, “comprising”, “including”, or “having” one constituent element are not exclusive expressions for excluding the existence of the other constituent elements.
  • FIG. 1 is a front view of a V-type engine 1 according to an embodiment of the present invention.
  • FIG. 2 is a plan view of the V-type engine 1 of FIG. 3 is a partial cross-sectional view above the cylinder head portion 3 of the V-type engine in FIG. 4 is a side view of a portion above the cylinder head portion 3 of the V-type engine 1 in FIG.
  • the V-type engine 1 (hereinafter, engine 1) includes a port injection device 4 and an in-cylinder injection device 5.
  • the engine 1 is a 6-cylinder V-type engine, 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 1 uses the axis 23 (cylinder axis L) of the cylinder 23 formed in each of the pair of banks 12 including the first bank 12a and the second bank 12b as the axis center O ( This is a V-type engine that is offset in the same direction as the direction of rotation of the crankshaft 15 (the direction of the arrow E) with respect to the crankshaft).
  • the engine 1 has a first bank 12 a relatively positioned in the front direction in the front-rear direction of the engine body 11 (hereinafter referred to as “front-rear direction”). 12b is located relatively rearward.
  • first bank 12a and the first bank 12a are connected so that the connecting rod 25 is connected without interfering in the front-rear direction.
  • second bank 12b is shifted in the front-rear direction.
  • the first bank 12a and the second bank 12b are displaced relative to each other in the front-rear direction by a width W.
  • the engine body 11 of the engine 1 includes a V-shaped cylinder block portion 2 and a cylinder head portion 3.
  • the cylinder block part 2 has a V-shaped deck cylinder part 21 and a crankcase part 22 common to both banks (12a, 12b) provided at the lower part of the deck cylinder part 21.
  • a cylinder 23 is provided.
  • the crankshaft 15 is rotatably supported by the crankcase portion 22 described above.
  • 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 about the axis center O of the crankshaft 15.
  • the cylinder block portion 2 may include an oil pan 28 that is mounted so as to cover the lower opening of the crankcase portion 22.
  • a plurality of depressions (for example, a hemispherical shape) positioned so as to correspond to each of the plurality of cylinders 23 are provided in the cylinder head portion 3.
  • the plurality of cylinders 23 inside the deck cylinder portion 21 and the above plurality of depressions coincide with each other, so that each cylinder 23 burns.
  • 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 unit 3 may include a rocker cover 37 that is mounted so as to close the head opening of each cylinder head unit 3 of each bank 12.
  • each cylinder head 3 is provided with two intake valves and exhaust valves (not shown), an intake port 32 opened in the bank 13 and an exhaust port 35 for each cylinder 23. That is, the combustion chamber 31 of each cylinder 23 and the outside of the cylinder head portion 3 are communicated with each other by an intake port 32 (32a, 32b) that is a passage for leading intake air to the combustion chamber 31, and this communication state is established by an intake valve. Configured to be controlled.
  • an exhaust port 35 which is a passage for guiding combustion gas (exhaust gas) from the combustion chamber 31 to the outside, also communicates with each combustion chamber 31 and the outside of each bank 12, and this communication state is controlled by an exhaust valve. Configured to be.
  • the exhaust port 35 may communicate with the outside and each combustion chamber 31 by extending outside the bank 13 such as the side opposite to 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 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. Narrow compared to things.
  • the bank angle is not limited to 60 degrees and may be an arbitrary angle such as 90 degrees.
  • the supercharger 7 may be provided between the banks, which are spaces extending above (upper) the inside 13 of the bank.
  • 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 valves and exhaust valves for each cylinder 23 is also arbitrary, and may be one or plural, and the number of branches inside the intake port 32 and the exhaust port 35 may also be the same. It depends on the number of valves.
  • the intake port 32 includes a plurality of intake ports 32 (three first-side intake ports 32a) in the first bank 12a (three in FIG. 1). Is open.
  • the second bank 12b is also provided with a plurality of intake ports 32 (second intake ports 32b) (three in FIG. 1), each opening in the bank 13.
  • the direction of the opening of the intake port 32 (32a, 32b) may be directed upward in the vertical direction (hereinafter, the vertical direction) of the engine body 11, as shown in FIG.
  • the intake port 32 is configured such that a manifold passage portion 62 (intake manifold) constituting a part of the intake passage for supplying air to the combustion chamber 31 is connected (connected) toward the combustion chamber 31. Intake air (intake air) flowing through the intake passage is supplied to the intake port 32 from the manifold passage portion 62 located on the upstream side.
  • the opening 33 of the intake port 32 is configured so that the manifold passage portion 62 can be connected, and the distal end portion 41 of the port injection device 4 described later can also be connected.
  • the opening 33 of the intake port 32 is based on a shape that matches the shape of the internal passage of the manifold passage portion 62, and a part of this base shape so that the distal end portion 41 of the port injection device 4 can be inserted (connected). May be formed to widen (see FIG. 3).
  • the axis (cylinder axis L) of the cylinder 23 formed in each of the pair of banks 12 including the first bank 12a and the second bank 12b has a crank axis (
  • the crankshaft 15 is offset in the same direction as the rotation direction of the crankshaft 15 (the direction of the arrow E) with respect to the shaft center O). That is, in the normal engine in which each bank 12 is not offset, the plurality of cylinder axis lines L1 in each deck cylinder portion 21 are at positions passing through the 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 2.
  • the plurality of cylinder axes L of the portion 21 are translated (offset) by an offset amount ⁇ in the same direction as the rotation direction E of the crankshaft 15 with respect to the axis O of the crankshaft 15.
  • the plurality of cylinder axes L and the plurality of cylinder axes L ⁇ b> 1 are shown to overlap the one on the foremost side.
  • the first bank 12a on the front side in the rotational direction E becomes higher than the position of the normal engine, and the second bank 12b on the rear side in the rotational direction E becomes lower, so that both banks 12 become There is a height difference in the vertical direction. For this reason, there is a difference in the vertical position of each intake port 32 of the first bank 12a and the second bank 12b.
  • the first intake port 32a having the height H1 is different.
  • the difference in height between the position of the opening 33 and the position of the opening 33 of the second 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. Alternatively, the offset amount ⁇ may be used.
  • a port injection device 4 and an in-cylinder injection device 5 described below are provided between the banks 13 of the pair of banks 12 having the height difference due to the offset.
  • the port injection device 4 is located above the in-cylinder injection device 5 between the bank 13 and the bank.
  • the high pressure and the low pressure used in the description of the following two types of fuel injection devices (4, 5) mean relative pressures when both are compared.
  • a high-pressure fuel means a higher pressure than a low-pressure fuel
  • a low-pressure fuel means a lower pressure than a high-pressure fuel.
  • the port injection device 4 is provided for each cylinder 23 between a pair of banks 12 (12a, 12b) and opens between the pair of banks 12 (12a, 12b).
  • 32 32a, 32b
  • 32 is configured to inject fuel. More specifically, in the port injection device 4, the front end portion 41 extends inside the intake port 32, so that the fuel injection port 43 for injecting fuel is located inside the intake port 32. Is configured to inject fuel into the intake port 32.
  • FIG. 3 illustrates a cross section on the first bank 12a side, but the front end portion 41 of the port injection device 4 is inserted into the opening 33 of the intake port 32 that opens upward, so that the port The fuel injection port 43 of the injection device 4 may be located inside the intake port 32.
  • a low pressure fuel supply pipe 44 is connected to the port injector 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.
  • fuel low pressure fuel
  • the fixing member 45 may be used to fix to the manifold passage portion 62.
  • the in-cylinder injection device 5 is also provided for each cylinder 23 between the pair of banks 12 (12 a, 12 b), and is configured to inject fuel directly into the combustion chamber 31.
  • the cylinder head portion 3 is configured such that the in-cylinder injection device 5 can be inserted from the side surface forming the inside of the bank 13, and the in-cylinder injection to be inserted
  • the fuel injection port 53 of the device 5 is configured to face the combustion chamber 31.
  • tip part 51 of the in-cylinder injection device 5 inserted in the cylinder head part 3 extends toward the combustion chamber 31, and the fuel injection port 53 in the forefront of the front-end
  • the in-cylinder injection device 5 (tip portion 51) may be installed inside the cylinder head portion 3 along the intake port 32.
  • the in-cylinder injector 5 is connected to a high-pressure fuel supply chamber 54 (accumulation chamber), and a high-pressure fuel is supplied from a fuel tank (not shown) via the high-pressure fuel supply chamber 54 and a supply pump (not shown). (High pressure fuel) is supplied.
  • the fuel in the fuel tank is supplied to the high-pressure fuel supply chamber 54 by a supply pump (not shown), and the fuel is supplied from the supply pump to the high-pressure fuel supply chamber 54 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, and the high pressure fuel controlled to the predetermined fuel pressure may be supplied from the high pressure fuel supply chamber 54 to the in-cylinder injection device 5.
  • the port injection devices 4 in the two banks 12 and the in-cylinder injection devices 5 in the two banks 12 are generated by the offset described above.
  • the vertical position differs depending on the height difference of the two banks 12. That is, the port injection device 4 provided in the first bank 12a is located above the port injection device 4 provided in the second bank 12b in the vertical direction.
  • the in-cylinder injection device 5 provided in the first bank 12a is located above the in-cylinder injection device 5 provided in the second bank 12b in the vertical direction.
  • the position of the intake port 32, the position of the port injection device 4 and the low-pressure fuel supply pipe 44, the position of the in-cylinder injection device 5 and the high-pressure fuel supply chamber 54 in the cylinder head portion 3 are as follows. The same applies to the bank 12a and the second bank 12b. However, the vertical positions of these banks 12 differ according to the height difference between the banks 12. 1 to 3, since the first bank 12a is located above the second bank 12b, the first side intake port 32a, the port injection device 4, the low pressure fuel supply pipe of the first bank 12a. 44 is located above the second side intake port 32b, the port injection device 4 and the low pressure fuel supply pipe 44 of the second bank 12b.
  • the in-cylinder injection device 5 and the high-pressure fuel supply chamber 54 of the first bank 12a are positioned above the in-cylinder injection device 5 and the high-pressure fuel supply chamber 54 of the second bank 12b, respectively.
  • the apparatus can be installed in a bank space such as a space between a pair of banks 12 (inside the bank 13) or a space above the inside of the bank 13 (between banks).
  • the heights of the first bank 12a and the second bank 12b differ depending on the offset
  • the port injection device 4 and the in-cylinder injection device 5 It is connected to an intake port 32 that opens between a pair of banks 12 of the engine 1. That is, the port injection devices 4 and the in-cylinder injection devices 5 of the first bank 12a and the second bank 12b are located between the pair of banks 12 (inside the bank 13), the space above the inside of the bank 13 (between the banks), and the like.
  • the port injection device 4 and the in-cylinder injection device 5 can be arranged in the bank space.
  • the first bank 12a and the second bank 12b serve as protective walls on both sides, and the protective wall allows the port injection device 4 and the in-cylinder to be in-cylinder.
  • the injection device 5 can be protected.
  • the port injection device 4 and the in-cylinder injection device 5 can be the same for both the first bank 12a and the second bank 12b, for each of the first bank 12a and the second bank 12b. There is no need to design and manufacture, and costs can be reduced.
  • the engine 1 includes a manifold section 62 connected to the intake port 32. That is, the engine 1 includes a first side intake port 32a that is an intake port 32 of the first bank 12a, a second side intake port 32b that is an intake port 32 of the second bank 12b, and a first side intake port 32a.
  • a first side multi-passage portion 62a comprising a plurality of branch passages 63 extending upwardly along the first bank 12a between a pair of banks 12 comprising the first bank 12a and the second bank 12b,
  • a second side multi-path composed of a plurality of branch passages 63 connected to each of the side intake ports 32b and extending upward along the second bank 12b between the pair of banks 12 including the first bank 12a and the second bank 12b.
  • the port injection device 4 is provided between the first-side manifold passage portion 62a and the second-side manifold passage portion 62b.
  • the first-side manifold passage portion 62a (three branch passages 63) is a side surface of the first bank 12a that forms the inside 13 of the bank from the opening 33 of the first-side intake port 32a of the first bank 12a. (In accordance with the outer shape of the first bank 12a), and extends upward in the bank 13 without contacting the first bank 12a.
  • the second-side manifold passage portion 62b (three branch passages 63) extends from the opening 33 of the second-side intake port 32b of the second bank 12b along the side surface of the second bank 12b that forms the inside 13 of the bank.
  • the second bank 12b extends upward in the bank 13 without contacting the second bank 12b.
  • the first side multi-passage portion 62 a includes a front branch passage 63 f located on the front side (front side) of the engine 1 and a rear side (rear side) of the engine 1.
  • a rear branch passage 63r located on the side) and a central branch passage 63c located between the front branch passage 63f and the rear branch passage 63r.
  • the branch passages 63 (63f, 63c, 63r) of the first-side manifold passage portion 62a are respectively connected to the three first-side intake ports 32a of the first bank 12a while forming independent intake passages therein. It is connected.
  • the second side multi-passage portion 62b is similarly omitted, but has a front branch passage 63f, a central branch passage 63c, and a rear branch passage 63r, and each branch passage of the second side multi-passage portion 62b.
  • 63 (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.
  • the first side manifold passage portion 62a and the second side manifold passage portion 62b each extend along the side surface of each bank 12, thereby opening the intake port 32 as illustrated in FIG. It is also possible to extend upward while opening each other from 33 to the outside of the engine body 11. In other words, it extends upward along each bank 12 more than the distance between the intake port 32a to which the first side manifold portion 62a is connected and the intake port 32b to which the second side manifold portion 62b is connected. The distance between the first-side manifold passage portion 62a and the second-side manifold passage portion 62b at any given location is longer or equal.
  • each branch passage 63 of the first side manifold section 62a and the second side manifold section 62b is connected to each intake port 32, and the other end (upstream end) is connected to the other.
  • the manifold passage portion 62 forms a part of the intake passage for guiding air (fresh air) from the outside of the engine 1 to the internal combustion chambers 31.
  • the port injector 4 includes the first side manifold passage portion 62a. It is located between the passage part 62a and the second-side manifold passage part 62b.
  • the first manifold passage 62a is adjacent to the right side of the port injection device 4 in the first bank 12a, and the second bank 12b is in the left direction of the port injection device 4 in the first bank 12a.
  • the second manifold section 62b is located across the port injection device 4.
  • the second side manifold passage 62b is adjacent to the left of the port injection device 4 in the second bank 12b, and the port injection device 4 in the first bank 12a is sandwiched in the right direction of the second bank 12b.
  • the first manifold section 62a is located.
  • the 1st side manifold passage part 62a and the 2nd side manifold path part 62b are located in the left-right direction of the port injection apparatus 4.
  • the first bank 12a and the second bank 12b are positioned in the left-right direction of the in-cylinder injection device 5.
  • the port injection apparatus 4 is provided inside the manifold passage part 62 (1st manifold part 62a and 2nd manifold part 62b).
  • the manifold passage part 62 plays the role of a protective wall, protection of the port injection device 4 and the in-cylinder injection device 5 can be strengthened.
  • the engine 1 includes a supercharger 7 provided above a pair of banks 12.
  • the other intake passage 8 connected to the upstream side of the first side manifold portion 62a and the second side manifold portion 62b has a main inlet as illustrated in FIGS.
  • the supercharger 7 may be disposed above the pair of banks 12 by connecting the supercharger 7 to the main passage portion 6.
  • the configuration of the main passage portion 6 will be described.
  • the main passage portion 6 connects the first side manifold passage portion 62a and the second side manifold passage portion 62b and is provided above the two banks 12. 7 to be connected. More specifically, the main passage portion 6 is shaped so as to surround the upper portion of the space between the banks 12 and both the left and right sides of the engine body 11 in the left-right direction. The space surrounded by the main passage portion 6 The supercharger 7 is installed. Further, the discharge port 74 of the supercharger 7 is connected to the central portion of the main passage portion 6 extending in the left-right direction so as to cover the upper portion of the supercharger 7, and below this central portion is in the bank. 13 is located. Thus, the intake outlet 74 of the turbocharger 7 faces upward, and the intake air discharged upward is distributed and introduced into the first side manifold section 62a and the second side manifold section 62b. It is configured as follows.
  • the main passage portion 6 draws the intake air discharged upward from the discharge port 74 of the supercharger 7 in both directions facing the outside of the engine body 11 (in FIG. 1, left and right in the left-right direction and right-hand direction).
  • An outward portion 61 configured to distribute in both directions
  • an upper and lower portion 66 configured to guide the intake air distributed in the left and right directions by the outward portion 61 from the upper side to the lower side (2 on both the left and right sides).
  • a collecting portion 64 (two on the left and right sides) configured to return the intake air flowing out from the upper and lower portions 66 in the direction toward the inside of the engine body 11.
  • the intake air is distributed in both the left and right directions from the discharge port 74 of the supercharger 7 by the outward portion 61, and then passes through the upper and lower portions 66 and the collecting portion 64, respectively.
  • 62 (62a, 62b).
  • a space is formed between the upper and lower portions 66 and the supercharger 7 by the outward portion 61 and the collecting portion 64 extending outward from the upper surface of the supercharger 7. May be formed.
  • a rib portion 67 extending in the front-rear direction so as to face the discharge direction of the intake air from the discharge port 74 of the supercharger 7 is connected to the portion of the outward portion 61 where the discharge port 74 of the supercharger 7 is connected. It may be provided.
  • the rib portion 67 plays a role of reinforcing the outward portion 61 and a guide for distributing the intake air in the left-right direction. That is, the rib portion 67 is located at a location where the high-pressure intake air from the supercharger 7 collides, thereby increasing the strength of the main passage portion 6 and the intake air along the smooth protruding shape of the rib portion 67. It is configured to flow in both the left and right directions.
  • all of them may be manufactured (formed) with the same material, such as a metal material such as aluminum or a resin material, the outward portion 61 and the gathering portion 64 are manufactured with a metal material, and the upper and lower portions 66 are made of resin. It may be manufactured by changing the material for each part such as manufacturing.
  • an intercooler 68 may be provided inside the intake passage formed by the upper and lower portions 66, and by cooling the temperature of the intake air that rises due to supercharging by the supercharger 7, the air density due to the temperature rise Can prevent the decrease. 1 to 4, the intercooler 68 is water-cooled, and the intercooler 68 is connected to a cooling passage for circulating a cooling medium such as cooling water in the intercooler 68.
  • Two cooling passage connection ports 68w are provided.
  • the cooling medium may be introduced from the lower cooling passage connection port 68w and discharged from the upper cooling passage connection port 68w.
  • the upper and lower parts 66 may be provided with a plurality of column parts 69 for reinforcing the upper and lower parts 66.
  • the outward part is provided. Since the upper and lower portions 66 support the entire weight of 61 and the supercharger 7, the strength of the upper and lower portions 42 is increased by the column portions 69.
  • the column portions 69 are used in conformity with the upper and lower portions 66 having a shape like a square column, and four columns located at each corner of the upper and lower portions 66 and One may be provided between the front and rear directions.
  • the supercharger 7 is a supercharger (mechanical supercharger) in the embodiment shown in FIGS.
  • the turbocharger main body 71 and the drive shaft 72 are included.
  • the supercharger main body 71 is surrounded by the main passage portion 6, while the drive shaft 72 is
  • the turbocharger main body 71 is attached to the supercharger main body 71 so as to protrude forward from the front surface of the turbocharger main body 71.
  • the supercharger will be described.
  • the two rotors housed inside the supercharger main body 71 are rotationally driven by the engine power to supercharge intake air.
  • the rotor is bound to one of the drive shafts 72 in the axial direction, and a pulley 73 is bound to the other end of the drive shaft 72.
  • the pulley 73 is connected to the output shaft of the engine 1 by a belt or the like, and the pulley 73 connected by the belt or the like is driven to rotate by the rotation of the output shaft of the engine 1.
  • the rotor is driven to rotate.
  • the intake air is supercharged by rotating so that the two rotors engage with each other inside the supercharger main body 71, and high-pressure intake air is discharged from the discharge port 74.
  • the supercharger 7 may be a turbocharger (exhaust turbine supercharger).
  • the supercharger 7 is suspended (suspended in the air) in the main passage portion 6 covering the upper portion thereof. That is, the engine 1 has a structure for supporting the supercharger 7 such as supporting the lower part of the supercharger 7 from below, in addition to the connecting portion between the main passage 6 and the discharge port 74 of the supercharger 7. Not done. In some other embodiments, the engine 1 includes another structure that supports the supercharger 7, and the supercharger 7 may not be suspended.
  • another intake passage 8 is connected to the intake port 75 of the supercharger 7.
  • a throttle device 83 may be connected to the other intake passage 8, and further to the upstream side thereof, an air cleaner that cleans air or an intake duct (air intake) ( (Not shown) may be provided.
  • the bypass passage 81 may be provided on the back surface of the supercharger 7, and a bypass valve 82 for controlling the communication state of the bypass passage 81 may be provided in the flow path of the bypass passage 81.
  • the other intake passage 8 may be provided with a throttle device 83 for controlling the intake air amount upstream of the supercharger 7 and an EGR valve used for the EGR device.
  • the supercharger 7 serves as a protective wall by providing the supercharger 7 between the pair of banks 12, and the fuel injection device (port injection device) is provided by this protective wall. 4 and the in-cylinder injection device 5) and the fuel supply device (low pressure fuel supply pipe 44 and high pressure fuel supply chamber 54) can be protected. Moreover, the periphery of the fuel injection device and the fuel supply device is surrounded by this configuration, and the protection function is enhanced.
  • the first-side manifold passage portion 62a includes a coupling wall 65 that couples between the adjacent branch passages 63 in the first-side manifold passage portion 62a, and the second-side manifold passage 62
  • the portion 62b has a coupling wall 65 that couples between the adjacent branch passages 63 in the second-side manifold passage portion 62b. That is, as illustrated in FIG. 4, the first-side manifold passage portion 62a has three branch passages, a front branch passage 63f, a central branch passage 63c, and a rear branch passage 63r.
  • the passage 63c and the rear branch passage 63r and the central branch passage 63c are connected by a connecting wall 65, respectively.
  • the adjacent passages 63 belonging to the first-side manifold passage portion 62a and the adjacent passages 63 belonging to the second-side manifold passage portion 62b are connected to each other. There is no gap between them, or the gap is made small. For this reason, the function as a protective wall of the manifold passage part 62 is strengthened, and the protection of the port injection device 4 and the in-cylinder injection device 5 can be strengthened.
  • a low-pressure fuel supply pipe 44 and a high-pressure fuel supply chamber 54 are provided between the bank 13 and the bank. That is, the engine 1 is connected to each of the port injectors 4 of the first bank 12a, the first low-pressure fuel supply pipe 44a that supplies low-pressure fuel to the port injector 4, and the port injector 4 of the second bank 12b. Are connected to each of the second low-pressure fuel supply pipe 44b for supplying low-pressure fuel to the port injection device 4 and the in-cylinder injection device 5 of the first bank 12a.
  • the first low-pressure fuel supply pipe 44a, the second low-pressure fuel supply pipe 44b, the first high-pressure fuel supply chamber 54a, and the second high-pressure fuel supply chamber 54b are composed of the pair of banks 12 and the first side manifold passage portion 62a. And the second side manifold passage portion 62b.
  • FIG. 5 is a perspective view of the port injection device 4 and the in-cylinder injection device 5 in some embodiments.
  • a port injection device 4 and the in-cylinder injection device 5 may be provided between the first-side manifold passage portion 62a and the second-side manifold passage portion 62b in the bank space. 5 will be described in detail.
  • Each of the first low pressure fuel supply pipes 44a for the first bank 12a and the second low pressure fuel supply pipes 44b for the second bank 12b includes a plurality of port injectors 4 respectively. They are connected (three in each of FIGS. 1 to 5). That is, the first low-pressure fuel supply pipe 44 a and the second low-pressure fuel supply pipe 44 b have shapes that are long in the front-rear direction in accordance with the shape of the bank 12.
  • a plurality of port injectors 4 are connected to the first low-pressure fuel supply pipe 44a and the second low-pressure fuel supply pipe 44b, respectively.
  • a fuel pipe 46 may be connected to one end of each low-pressure fuel supply pipe 44 (44a, 44b) in the longitudinal direction (front direction in the front-rear direction in the example of FIG. 5).
  • the two fuel pipes 46 connected to 44 may be joined together upstream and then connected to a fuel pump (not shown).
  • the in-cylinder injection device 5 includes a first high-pressure fuel supply chamber 54a for the first bank 12a and a second high-pressure fuel supply chamber 54b for the second bank 12b. A plurality of them are connected (three in each of FIGS. 1 to 5). That is, the first high-pressure fuel supply chamber 54 a and the second high-pressure fuel supply chamber 54 b are also long in the front-rear direction according to the shape of the bank 12. A plurality of in-cylinder injectors 5 are connected to the first high pressure fuel supply chamber 54a and the second high pressure fuel supply chamber 54b in order to supply fuel to the combustion chamber 31 of each cylinder 23 of each bank 12. Has been.
  • each high-pressure fuel supply chamber 54 and the end opposite to the end to which the fuel pipe 46 of the low-pressure fuel supply pipe 44 is connected (rearward direction in the front-rear direction in the example of FIG. 5). ) May be connected to the fuel pipe 56, respectively.
  • the two fuel pipes 56 connected to each high-pressure fuel supply chamber 54 may be joined together upstream and then connected to a supply pump (not shown).
  • a supply pump not shown.
  • the low-pressure fuel supply pipe 44 and the high-pressure fuel supply chamber 54 for supplying fuel to each of the first bank 12a and the second bank 12b include the pair of banks 12 and the first-side manifold passage portion 62a. And the second side manifold section 62b are provided inside the bank space.
  • the fuel supply device (the low pressure fuel supply pipe 44 and the high pressure fuel supply chamber 54) can be protected by the protective walls formed by the first bank 12a, the second bank 12b, and the manifold passage portion 62.
  • the port injection device 4 is provided above the in-cylinder injection device 5, and the port injection device 4 of the first bank 12a and the second bank 12b
  • the port injection devices 4 are arranged to be shifted in the front-rear direction
  • the in-cylinder injection device 5 in the first bank 12a and the in-cylinder injection device 5 in the second bank 12b are arranged to be shifted in the front-rear direction.
  • FIG. 6 is a view showing a side view of the port injection device 4 and the in-cylinder injection device 5 of FIG. And as FIG. 6 shows, the position of the port injection apparatus 4 of the 1st bank 12a and the port injection apparatus 4 of the 2nd bank 12b does not correspond. That is, in the front-rear direction, the port injection device 4 of the first bank 12a is positioned relatively forward, and the port injection device 4 of the second bank 12b is positioned relatively rearward. It is shifted in the direction.
  • the front-rear direction positions of the in-cylinder injection device 5 of the first bank 12a and the in-cylinder injection device 5 of the second bank 12b do not match. That is, in the front-rear direction, the in-cylinder injection device 5 of the first bank 12a is positioned relatively forward, and the in-cylinder injection device 5 of the second bank 12b is positioned relatively rearward. Are shifted forward and backward. In order to shift in the front-rear direction in this way, a shift width W in the front-rear direction of the engine 1 may be used (see FIG. 2).
  • the port injection device 4 and the in-cylinder injection device 5 are spatially separated from each other vertically, and the port injection devices 4 in the first bank 12a and the second bank 12b and the in-cylinder injection device 5 are provided. By mutually shifting them in the front-rear direction, they are alternately arranged in each of the first bank 12a and the second bank 12b. Therefore, even when the sandwiching angle (bank angle) between the pair of banks 12 is narrow, the port injection device 4 and the in-cylinder injection device 5 can be arranged in the bank space.
  • the sandwiching angle (bank angle) between the first bank 12a and the second bank 12b of the engine 1 is 60 degrees.
  • the bank angle may be 60 degrees or less.
  • the fuel injection device the port injection device 4 and the in-cylinder injection device 5
  • the fuel supply device the low-pressure fuel supply pipe
  • the bank angle may be greater than 60 degrees.
  • the present invention is not limited to the above-described embodiments, and includes forms obtained by modifying the above-described embodiments and forms obtained by appropriately combining these forms.

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

Abstract

　Ce moteur de type en V, dans lequel l'axe des cylindres formés dans chaque paire de bancs comprenant un premier banc et un second banc est décalé du centre de l'axe d'un vilebrequin dans le même sens que le sens de rotation du vilebrequin, comprend: un dispositif d'injection formé dans chaque cylindre, et conçu de façon à injecter du carburant dans un orifice d'admission qui s'ouvre entre la paire de bancs; et un dispositif d'injection ménagé dans chaque cylindre et entre la paire de bancs, et conçu de manière à injecter directement du carburant dans une chambre de combustion.
PCT/JP2014/084344 2014-12-25 2014-12-25 Moteur de type en v WO2016103404A1 (fr)

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PCT/JP2014/084344 WO2016103404A1 (fr) 2014-12-25 2014-12-25 Moteur de type en v
JP2016565762A JP6296373B2 (ja) 2014-12-25 2014-12-25 Ｖ型エンジン

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PCT/JP2014/084344 WO2016103404A1 (fr) 2014-12-25 2014-12-25 Moteur de type en v

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS615330U (ja) * 1984-06-15 1986-01-13 トヨタ自動車株式会社 機械式過給機付ｖ型内燃機関の吸入空気冷却装置
JPH1030445A (ja) * 1996-07-11 1998-02-03 Tochigi Fuji Ind Co Ltd Ｖ型エンジンの過給装置
JP2005009380A (ja) * 2003-06-18 2005-01-13 Mitsubishi Motors Corp Ｖ型エンジン
JP2005054655A (ja) * 2003-08-04 2005-03-03 Mitsubishi Motors Corp Ｖ型エンジン
JP2006329151A (ja) * 2005-05-30 2006-12-07 Toyota Motor Corp 内燃機関の燃料系統の異常判定装置
JP2008025466A (ja) * 2006-07-21 2008-02-07 Toyota Motor Corp Ｖ型エンジン
JP2008075509A (ja) * 2006-09-20 2008-04-03 Yamaha Motor Co Ltd エンジンの吸気制御装置
JP2008297960A (ja) * 2007-05-30 2008-12-11 Honda Motor Co Ltd 内燃機関の吸気マニホルド
JP2011094599A (ja) * 2009-11-02 2011-05-12 Yamaha Motor Co Ltd 船推進機および船
JP2014214627A (ja) * 2013-04-23 2014-11-17 トヨタ自動車株式会社 内燃機関の制御装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS615330U (ja) * 1984-06-15 1986-01-13 トヨタ自動車株式会社 機械式過給機付ｖ型内燃機関の吸入空気冷却装置
JPH1030445A (ja) * 1996-07-11 1998-02-03 Tochigi Fuji Ind Co Ltd Ｖ型エンジンの過給装置
JP2005009380A (ja) * 2003-06-18 2005-01-13 Mitsubishi Motors Corp Ｖ型エンジン
JP2005054655A (ja) * 2003-08-04 2005-03-03 Mitsubishi Motors Corp Ｖ型エンジン
JP2006329151A (ja) * 2005-05-30 2006-12-07 Toyota Motor Corp 内燃機関の燃料系統の異常判定装置
JP2008025466A (ja) * 2006-07-21 2008-02-07 Toyota Motor Corp Ｖ型エンジン
JP2008075509A (ja) * 2006-09-20 2008-04-03 Yamaha Motor Co Ltd エンジンの吸気制御装置
JP2008297960A (ja) * 2007-05-30 2008-12-11 Honda Motor Co Ltd 内燃機関の吸気マニホルド
JP2011094599A (ja) * 2009-11-02 2011-05-12 Yamaha Motor Co Ltd 船推進機および船
JP2014214627A (ja) * 2013-04-23 2014-11-17 トヨタ自動車株式会社 内燃機関の制御装置

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