WO2016039142A1 - Moteur à combustion interne et séparateur pour moteur à combustion interne - Google Patents

Moteur à combustion interne et séparateur pour moteur à combustion interne Download PDF

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Publication number
WO2016039142A1
WO2016039142A1 PCT/JP2015/074017 JP2015074017W WO2016039142A1 WO 2016039142 A1 WO2016039142 A1 WO 2016039142A1 JP 2015074017 W JP2015074017 W JP 2015074017W WO 2016039142 A1 WO2016039142 A1 WO 2016039142A1
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WO
WIPO (PCT)
Prior art keywords
internal combustion
combustion engine
separator member
oil
suction port
Prior art date
Application number
PCT/JP2015/074017
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English (en)
Japanese (ja)
Inventor
啓之 川合
芳行 鈴木
一矢 松島
大吾 宇佐
Original Assignee
アイシン精機株式会社
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.)
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Publication date
Priority claimed from JP2014182232A external-priority patent/JP6413520B2/ja
Priority claimed from JP2014182144A external-priority patent/JP2016056712A/ja
Priority claimed from JP2014181948A external-priority patent/JP6413519B2/ja
Application filed by アイシン精機株式会社 filed Critical アイシン精機株式会社
Publication of WO2016039142A1 publication Critical patent/WO2016039142A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil

Definitions

  • the present invention relates to an internal combustion engine and a separator for an internal combustion engine.
  • an internal combustion engine provided with a separator member for gas-liquid separation of blow-by gas is known.
  • Such an internal combustion engine is disclosed in, for example, Japanese Patent Application Laid-Open No. 2009-174464.
  • Japanese Patent Application Laid-Open No. 2009-174464 discloses a crankshaft, a crankcase, a cylinder block which is disposed on the upper side of the crankcase and sandwiches the crankshaft with a mating surface with the crankcase, and an outer surface of the cylinder block on the upper side of the crankcase
  • An internal combustion engine is disclosed that includes an oil separation device (separator member) that is considered to be attached to the engine.
  • an oil storage part in which oil is stored and an internal space in which blow-by gas flows while being isolated from the oil storage part are formed. .
  • a gas outflow passage that connects the internal space of the crankcase and the oil separation device is integrally provided in the cylinder block on the upper side of the crankcase. Accordingly, the blow-by gas in the crankcase is configured to be supplied to the oil separator through the internal space of the crankcase and the gas outflow passage of the cylinder block.
  • the gas outflow passage is integrally provided in the cylinder block above the rotation axis (matching surface) of the crankshaft. It is considered that the cylinder block is also provided with a connection opening for connecting the gas outflow passage inside the cylinder and the suction port of the oil separator attached to the outer surface of the cylinder block. For this reason, there is a problem that the rigidity of the cylinder block is reduced by the provision of the connection opening.
  • a sliding member such as a piston of the internal combustion engine body slides, so high rigidity is required.
  • the present invention has been made to solve the above-described problems, and one object of the present invention is to suppress a decrease in the rigidity of the internal combustion engine body in a portion above the rotation axis of the crankshaft. It is an object to provide an internal combustion engine and an internal combustion engine separator that can be used.
  • an internal combustion engine is attached to an internal combustion engine body including a crankshaft and an oil storage part in which oil is stored, and an outer surface of the internal combustion engine body.
  • the main body of the internal combustion engine is disposed above the rotation axis of the crankshaft by disposing the suction port of the separator member below the rotation axis of the crankshaft. Since the suction port through which blow-by gas flows in is not arranged, the connection opening that connects the gas outlet passage for flowing blow-by gas and the suction port of the separator member is located closer to the rotation axis of the crankshaft of the internal combustion engine body. There is no need to provide it in the upper part. Thereby, it can suppress that the rigidity of the internal combustion engine main body in the part above the rotating shaft line of a crankshaft falls.
  • the shape of the internal combustion engine body can be changed significantly in the portion above the rotation axis of the crankshaft. Can be suppressed. Thereby, even after the shape of the internal combustion engine body in the portion above the rotation axis of the crankshaft (cylinder block or the like) is determined, a structure for the flow of blow-by gas can be provided in the internal combustion engine body relatively easily. Can be added.
  • the suction port of the separator member is disposed above the oil level of the oil stored in the oil storage portion, so that the suction port of the separator member is connected to the rotation axis of the crankshaft. Even if it is a case where it arrange
  • the separator member is attached to the outer surface of the internal combustion engine main body extending along the direction in which the crankshaft extends.
  • an intake device intake manifold
  • a separator member is attached to the outer surface of the internal combustion engine body even so, by disposing the suction port of the separator member below the rotation axis of the crankshaft, at a position different from the intake device or the like that is mainly disposed in the upper part of the rotation axis of the crankshaft, The separator member can be easily arranged.
  • the suction port is provided in a lower portion of the separator member, and the lower end of the suction port is disposed above the oil level of the oil stored in the oil storage unit. ing. If comprised in this way, even if oil is sucked into the inside of a separator member by providing a suction port in the lower part of a separator member, it will be easy from a suction mouth provided in the lower part of a separator member by the dead weight of oil. Can be discharged to the oil reservoir. In addition, by arranging the lower end of the suction port above the oil level of the oil stored in the oil storage part, the suction port of the separator member is surely above the oil level of the oil stored in the oil storage part. Can be arranged.
  • the suction port has a vertically long shape extending in the vertical direction. If comprised in this way, even when discharging
  • the separator member further includes a discharge port that is provided near the upper end of the separator member and discharges blow-by gas that has passed through the separator member.
  • the oil separated in the separator member is provided near the upper end of the separator member by utilizing the fact that the liquid oil is more susceptible to gravity than the gas blow-by gas. Can be suppressed. Thereby, it can suppress that oil is discharged
  • the suction port is provided in the lower part of the separator member, it is possible to perform gas-liquid separation of blow-by gas in a wide range from the lower part of the separator member to the discharge port provided in the vicinity of the upper end part. Therefore, the gas-liquid separation of blow-by gas can be performed efficiently.
  • control valve that is directly attached to the discharge port and controls the discharge amount of blow-by gas.
  • This configuration eliminates the need for a connection passage for connecting the control valve and the discharge port compared to the case where the control valve and the discharge port are indirectly connected via the connection passage. Can be reduced, and the structure can be simplified.
  • the discharge port is preferably formed at the upper end portion of the separator member, and the control valve is directly attached to the discharge port so as to protrude upward from the upper end portion. If comprised in this way, it can suppress effectively that the oil isolate
  • the separator member is attached to the outer side surface of the internal combustion engine body extending along the direction in which the crankshaft extends, and the outer side surface to which the separator member of the internal combustion engine body is attached.
  • An intake manifold is attached above the separator member, and further includes a blowby gas passage portion that guides the blowby gas discharged from the discharge port of the separator member to the intake manifold.
  • the separator member and the intake manifold attached above the separator member can be connected via the blow-by gas passage portion on the same outer surface of the internal combustion engine body.
  • the length of the path (blow-by gas passage part) leading to the manifold can be effectively shortened. Thereby, blow-by gas (combusted gas and unburned mixture) separated by gas and liquid by the separator member can be efficiently supplied (returned) to the intake manifold.
  • the internal combustion engine body includes a cylinder block and a crankcase disposed below the cylinder block, and the crankcase has a shape corresponding to the suction port of the separator member. And an opening communicating with the suction port is provided. If comprised in this way, the opening part connected easily with a suction inlet can be easily provided in the crankcase in which high rigidity is comparatively required compared with a cylinder block.
  • the opening of the crankcase having a shape corresponding to the suction port of the separator member to the suction port, it is possible to easily remove the suction port of the separator member from the main body of the internal combustion engine by simply attaching the suction port of the separator member to the opening of the crankcase.
  • the blowby gas can be circulated inside the separator member.
  • the separator member is formed so as to protrude inside the internal combustion engine body, and liquid oil in the internal combustion engine body flows into the oil separator through the suction port.
  • Including a liquid oil inflow regulating section for regulating With this configuration, the liquid oil flowing toward the suction port can be blocked by the liquid oil inflow restricting portion protruding inside the internal combustion engine body, so that the liquid oil flows into the separator member through the suction port. Can be regulated. Thereby, it can suppress that the consumption of oil increases.
  • liquid oil inflow restricting portion on the separator member attached to the outer surface of the internal combustion engine main body so as to protrude to the inside of the internal combustion engine main body, compared with the case where the liquid oil inflow restricting portion is provided in the internal combustion engine main body. It is not necessary to change the shape of the internal combustion engine body significantly. Thereby, the liquid oil inflow regulation part which regulates inflow of liquid oil can be easily provided in an internal-combustion engine.
  • the liquid oil inflow restricting portion is formed integrally with the separator member by projecting a part of the separator member to the inside of the internal combustion engine body. Yes. If comprised in this way, a number of parts can be reduced compared with the case where a separate liquid oil inflow control part is attached to a separator member.
  • the separator member is made of a material that is lighter than the material constituting the internal combustion engine body, the liquid oil inflow restriction portion is lighter than when the liquid oil inflow restriction portion is provided on the internal combustion engine body side. The separator member itself can be reduced in weight.
  • the liquid oil inflow restricting portion preferably has an eaves-shaped upper inflow restricting portion that covers the suction port from above. If comprised in this way, it can suppress reliably that liquid oil flows in into the inside of a separator member from the upper side of a suction inlet by an eaves-shaped upper side inflow control part.
  • the separator member includes a first suction path that communicates with the interior of the internal combustion engine body below the combustion chamber, and the interior of the intake device that introduces intake air into the internal combustion engine body. It is connected to a discharge path that communicates with a second suction path that communicates with the interior of the internal combustion engine body above the combustion chamber.
  • the second suction path is provided in a valve-closed state, and is connected to a negative suction passage in the oil separator.
  • a one-way valve is provided that is opened based on an increase in pressure.
  • the negative pressure on the intake device side is distributed to the first and second suction paths, so that the first suction path side is compared with the case where the second suction path is closed.
  • the ventilation performance of blowby gas will be reduced.
  • the one-way valve can be closed and the second suction path can be closed during normal times when the negative pressure in the separator member does not increase, Even when it is provided, the ventilation performance of the blow-by gas on the first intake path side can be maintained.
  • the internal combustion engine main body includes a cylinder head cover disposed above the combustion chamber, and the second suction path communicates with the inside of the cylinder head cover.
  • the second suction path can be easily connected to the cylinder head cover that facilitates the formation of the gas outlet port in the internal combustion engine body due to the layout of the internal combustion engine. Can be provided.
  • An internal combustion engine separator is an internal combustion engine separator that is attached to an outer surface of an internal combustion engine body that includes a crankshaft and an oil storage portion in which oil is stored. It includes a suction port through which blow-by gas flows, and includes a separator body for gas-liquid separation of blow-by gas from the internal combustion engine body.
  • the suction port of the separator body is below the rotation axis of the crankshaft and stores oil. It is arrange
  • the suction port of the separator body is disposed below the rotation axis of the crankshaft, so that the internal combustion engine is positioned above the rotation axis of the crankshaft. Since the suction port through which blow-by gas flows from the engine body is not disposed, the connection opening connecting the gas outlet passage for flowing blow-by gas and the suction port of the separator body is located above the rotation axis of the crankshaft. There is no need to provide a portion of the internal combustion engine body. As a result, it is possible to provide a separator for an internal combustion engine that can suppress a decrease in the rigidity of the internal combustion engine body in a portion above the rotation axis of the crankshaft.
  • the shape of the internal combustion engine body can be changed significantly in the portion above the rotation axis of the crankshaft. Can be suppressed. Thereby, even after the shape of the internal combustion engine body in the portion above the rotation axis of the crankshaft (cylinder block or the like) is determined, a structure for the flow of blow-by gas can be provided in the internal combustion engine body relatively easily. Can be added.
  • the suction port of the separator main body is disposed above the oil level of the oil stored in the oil reservoir, so that the suction port of the separator main body is rotated by the crankshaft. Even when it is arranged below the axis, oil can be prevented from flowing into the suction port of the internal combustion engine separator, so that the internal combustion engine separator is prevented from being blocked due to the oil that has flowed in. can do. Furthermore, since the suction port of the separator body can be brought close to the oil storage part of the internal combustion engine body, the heat of the oil stored in the oil storage part can be transmitted to the periphery of the suction port of the separator body, so that it can be used in cold regions, etc. When the vehicle is traveling, the water inside the separator for the internal combustion engine can be prevented from freezing around the suction port due to the cold traveling wind. As a result, it is possible to suppress the flow of blow-by gas from being inhibited in the separator body.
  • FIG. 1 is a perspective view showing a schematic overall configuration of an engine according to a first embodiment of the present invention.
  • 1 is a side view showing a schematic overall configuration of an engine according to a first embodiment of the present invention.
  • FIG. 3 is a cross-sectional view taken along line 190-190 in FIG. It is the side view which showed the lower part of the engine main body by 1st Embodiment of this invention. It is the perspective view which showed the separator member by 1st Embodiment of this invention. It is the perspective view which showed the state which removed the cover part from the separator member shown in FIG. It is sectional drawing which showed a part of engine by 2nd Embodiment of this invention.
  • the configuration of an engine 100 composed of a gasoline engine according to the first embodiment of the present invention will be described with reference to FIGS.
  • the direction in which the crankshaft 10a extends is defined as the X-axis direction
  • the direction orthogonal to the crankshaft 10a is defined as the Y-axis direction
  • the direction in which the cylinder 21 (see FIG. 3) extends is defined as the Z-axis direction (vertical direction). I do.
  • the engine 100 is an example of the “internal combustion engine” in the present invention.
  • the engine 100 for automobiles includes an engine body 10 made of aluminum alloy including a cylinder head 1, a cylinder block 2 and a crankcase 3, as shown in FIGS. Note that the cylinder block 2 and the crankcase 3 are configured separately.
  • the in-line four-cylinder engine 100 includes a head cover 4 assembled on the upper side (Z1 side) of the cylinder head 1 and a crankshaft 10a disposed so as to penetrate the engine body 10 in the X-axis direction.
  • an intake manifold 5, a separator member 6, and a mount bracket 7 are provided on an outer surface 10b on one side (Y2 side) of the outer surface of the engine 100 that extends along the X-axis direction in which the crankshaft 10a extends. It is attached.
  • the engine main body 10 is an example of the “internal combustion engine main body” of the present invention
  • the separator member 6 is an example of the “internal combustion engine separator” of the present invention.
  • the intake manifold 5 includes a surge tank 5a and an intake port 5b that is arranged on the downstream side of the surge tank 5a and branches into four.
  • the intake manifold 5 has a function as an intake device that introduces intake air from the cylinder head 1 into combustion chambers (not shown) formed above a plurality of cylinders 21 (see FIG. 3) of the cylinder block 2.
  • Separator member 6 makes fine oil mist in blow-by gas flowing in from engine body 10 into droplets, thereby forming gas (combustion gas and unburned mixture) and liquid (engine oil (drop-like mixture). Liquid oil) (hereinafter simply referred to as oil)).
  • the mount bracket 7 is attached to fix the engine 100 to a vehicle body (not shown) via a mount insulator 7a (see FIG. 1) capable of absorbing shock. In FIG. 2, the mount insulator 7a is not shown for convenience.
  • a camshaft and a valve mechanism (not shown) are arranged inside the cylinder head 1 of the engine body 10. As shown in FIG. 3, four cylinders 21 in which the piston 22 reciprocates in the Z-axis direction are formed inside the cylinder block 2 connected to the lower side (Z2 side) of the cylinder head 1. The four cylinders 21 are configured to be supplied with intake air from four intake ports 5b (see FIG. 2).
  • a crank chamber 10c is formed inside the engine body 10 by the cylinder block 2 and the crankcase 3 connected to the lower side (Z2 side) of the cylinder block 2.
  • a crankshaft 10a that is rotatably connected around a rotation axis A extending along the X-axis direction (see FIG. 3) is disposed.
  • the crankshaft 10a is disposed on the mating surface between the cylinder block 2 and the crankcase 3.
  • the rotation axis A of the crankshaft 10a and the mating surface between the cylinder block 2 and the crankcase 3 are in the vertical direction. They are aligned at substantially the same height position in the (Z-axis direction).
  • the crankshaft 10a is shown in a substantially rod shape. However, in actuality, the crankshaft 10a has a crank pin (not shown) or a crank pin whose rotational axis is eccentric. A balance weight (not shown) sandwiched in the X-axis direction is provided.
  • the crankshaft 10a is connected to a piston 22 via a connecting rod (connecting rod) 12, and the crankshaft 10a is rotationally driven as the piston 22 reciprocates in the cylinder 21. At that time, blow-by gas leaks from the combustion chamber (not shown) vertically above the piston 22 into the crank chamber 10 c through a minute gap between the piston 22 and the cylinder 21.
  • the oil storage part 30 in which oil is stored is provided in the lower part (Z2 side) of the crank chamber 10c.
  • the oil is pumped from the oil reservoir 30 to the upper part of the engine body 10 by an oil pump (not shown), and lubricates sliding parts such as a valve timing system member (not shown) such as a cam shaft and the outer peripheral surface of the piston 22. After that, it is dropped by its own weight and returned to the oil reservoir 30.
  • the oil level of the oil stored in the oil storage unit 30 is located below the upper end of the crankcase 3 (the mating surface of the cylinder block 2 and the crankcase 3).
  • the oil level of the oil means the oil level of the oil when the oil level is positioned at the highest position in the vertical direction when the oil is injected into the engine body 10 to an allowable amount.
  • the outer surface 3a on the Y2 side of the crankcase 3 is provided with an opening 31 to which a suction port 62 of a separator member 6 described later is connected.
  • the opening 31 penetrates the outer surface 3a so as to connect the crank chamber 10c inside the crankcase 3 and the outside (separator member 6).
  • the opening 31 is formed in a vertically long oval shape having a major axis extending in the vertical direction and a minor axis extending in the X-axis direction.
  • the opening 31 is disposed at the approximate center of the protruding portion 3b that protrudes circumferentially toward the outside (Y2 side).
  • the outer surface 3a on the Y2 side of the crankcase 3 is formed with three screw holes 3c (see FIG. 3) for fixing the separator member 6, and the outer surface 2b of the cylinder block 2 on the Y2 side.
  • One screw hole 2c (see FIG. 3) for fixing the separator member 6 is formed.
  • the separator member 6 is composed of a resin having oil resistance, heat resistance, chemical resistance, and sufficient strength such as 6,6-nylon. Further, as shown in FIGS. 1 and 3, the separator member 6 is attached to the lower side (Z2 side) of the intake manifold 5 and the mounting bracket 7 on the outer side surface 10 b on the Y2 side of the engine body 10. Further, the separator member 6 is attached to the outer surface 10b of the engine body 10 so as to be disposed in a space S formed between the outer surface 10b and the mount insulator 7a.
  • the separator member 6 is disposed on the side of the crankcase 3 (Y1 side) and on the side opposite to the crankcase 3 (Y2 side). Is composed of a separator body including a body portion 61 fitted from the Y1 side. Further, the separator member 6 is manufactured by being integrated by vibration welding or the like in a state where the main body 61 is fitted in the lid 60.
  • a suction port 62 through which blow-by gas flows from the engine body 10 is formed at a lower portion (Z2 side) below the center in the vertical direction (Z direction) of the lid portion 60 of the separator member 6.
  • the suction port 62 is formed to correspond to the opening 31 of the crankcase 3 and has a vertically long oval shape having a major axis extending in the Z-axis direction and a minor axis extending in the X-axis direction.
  • the opening 31 of the crankcase 3 and the suction port 62 of the separator member 6 both have the rotation axis A of the crankshaft 10 a in the vertical direction (Z direction). It is arranged so as to be located below the (crank center) (Z2 side) and above the oil level of the oil stored in the oil reservoir 30 (Z1 side). That is, neither the opening 31 of the crankcase 3 nor the suction port 62 of the separator member 6 is arranged in the cylinder head 1 or the cylinder block 2 above the rotation axis A of the crankshaft 10a.
  • both the upper end 31a of the opening 31 and the upper end 62a of the suction port 62 are formed so as to be positioned below the rotation axis A of the crankshaft 10a by a distance D1.
  • the lower end 31b of the opening 31 is formed to be positioned above the oil level of the oil by a distance D2
  • the lower end 62b of the suction port 62 is above the oil level of the oil by a distance D3. It is formed to be located. Since the distance D2 is slightly larger than the distance D3, the lower end 31b of the opening 31 is formed at a position slightly away from the oil surface than the lower end 62b of the suction port 62. Further, as shown in FIGS. 2 and 3, the entire separator member 6 is configured to be positioned above the oil surface of the oil.
  • a long circumferential groove 60 a is formed on the crankcase 3 side (Y1 side) of the lid portion 60 of the separator member 6 so as to surround the suction port 62.
  • an O-ring 102 for suppressing oil from flowing out of the engine 100 is fitted in the groove 60 a.
  • a flow path R through which blow-by gas flows is provided inside the separator member 6.
  • the main body 61 is formed with a recess 61 a that is recessed on the opposite side (Y2 side) from the lid 60, and the flow path R is formed by the recess 61 a and the lid 60.
  • the blow-by gas that has passed through the flow path R is configured to be discharged from a discharge port 64 provided in the upper end portion 61b of the separator member 6 (main body portion 61).
  • the main body 61 is provided with a wall 61c that protrudes from the bottom surface of the recess 61a toward the Y1 side. Further, an inclined portion 61e (see FIG.
  • the blowby gas passes through a fourth flow path R4 formed by the wall portion 61c and the inner surface on the X1 side of the recess 61a and extends upward, and collides with the inner surface on the Z1 side of the recess 61a.
  • the blowby gas passes through the fifth flow path R5 extending in the lateral direction (X2 direction) along the wall portion 61c and reaches the discharge port 64.
  • the separator member 6 is formed with a bent flow path R having a labyrinth structure.
  • the oil mist is separated from the blow-by gas, so that the blow-by gas from which the oil mist is separated is discharged from the discharge port 64.
  • the separated liquid oil flows through the flow path R of the separator member 6 in the direction opposite to the flow direction of the blow-by gas by the weight of the oil, and enters the crank chamber 10c from the lower part of the vertically long suction port 62 and the opening 31. It is returned to the oil reservoir 30 (see FIG. 3).
  • the blow-by gas suction port 62 and the oil discharge port after separation are common.
  • the separator member 6 is configured such that the distance (flow path distance) of the flow path R from the suction port 62 to the discharge port 64 is as long as possible. Further, the separator member 6 is configured to prevent the flow rate of the blow-by gas flowing through the flow path R from becoming excessively large by ensuring a certain cross-sectional area of the flow path R.
  • a PCV (Positive Crankcase Ventilation) valve 8 is directly attached to the discharge port 64 of the separator member 6 so as to protrude upward (in the Z1 direction) from the upper end portion 61b of the separator member 6.
  • the opening degree of the PCV valve 8 is changed according to the pressure difference between the intake manifold 5 side and the separator member 6 side. The valve is opened when the intake manifold 5 side becomes low pressure, and is closed when the intake manifold 5 side becomes high pressure.
  • the PCV valve 8 has a function of controlling the discharge amount of the blow-by gas separated from the gas and liquid discharged from the discharge port 64.
  • the PCV valve 8 is an example of the “control valve” in the present invention.
  • the lower end of the tube member 9 (connection piping) is connected to the side (Z1 side) opposite to the connection side (Z2 side) to the discharge port 64 of the PCV valve 8. ing.
  • the tube member 9 is connected to the PCV valve 8 so as to extend in the vertical direction (Z direction).
  • the upper end of the tube member 9 is connected to the surge tank 5 a of the intake manifold 5. Therefore, the tube member 9 returns the blowby gas to the intake manifold 5 on the intake side by guiding the blowby gas discharged from the discharge port 64 (PCV valve 8) of the separator member 6 to the lower surface side in the vertical direction of the surge tank 5a. It fulfills the function of connecting piping.
  • the tube member 9 is an example of the “blow-by gas passage” in the present invention.
  • the tube member 9 is connected to the surge tank 5a through a through hole 7b formed in the mount bracket 7.
  • the length of the tube member 9 is suppressed and the exposed portion of the tube member 9 is reduced. It is suppressed that the water
  • blow-by gas is configured to be sucked into the suction port 62 of the separator member 6 by the negative pressure of the intake manifold 5.
  • the blow-by gas sucked into the suction port 62 is supplied to the intake manifold 5 through the separator member 6, the PCV valve 8 and the tube member 9, and is supplied to the cylinder 21 of the cylinder block 2 together with the intake air.
  • a PCV system including such a separator member 6 is provided in the engine 100.
  • the suction port 62 of the separator member 6 is disposed below (the Z2 side) the rotation axis A of the crankshaft 10a, so that it is above the rotation axis A of the crankshaft 10a ( Since the suction port 62 through which blow-by gas flows from the engine body 10 is not arranged in the cylinder head 1 or the cylinder block 2 on the Z1 side), the gas outlet passage for allowing blow-by gas to flow in is connected to the suction port of the separator member. There is no need to provide a connection opening in the cylinder head 1 or the cylinder block 2 above the rotation axis A of the crankshaft 10a.
  • the suction inlet 62 is arrange
  • the suction port 62 can be brought close to the oil storage unit 30 of the engine body 10, the heat of the oil stored in the oil storage unit 30 can be transmitted to the vicinity of the suction port 62.
  • the separator member 6 by attaching the separator member 6 to the outer side surface 10b of the engine body 10, the separator member 6 can be easily attached to the engine body 10 as compared with the case where the separator member is provided inside the engine body 10. Can do. Further, by attaching a separate separator member 6 to the outer side surface 10 b of the engine body 10, the separator member 6 damaged due to blockage or the like can be easily replaced with a new separator member 6.
  • the suction port 62 of the separator member 6 is more reliably stored by the oil storage part 30 by comprising so that the whole separator member 6 may be located above the oil level of oil.
  • the oil can be disposed above the oil level.
  • the suction port 62 of the separator member 6 is disposed below the rotation axis A of the crankshaft 10a on the outer surface 10b of the engine body 10 to which the intake manifold 5 and the mount bracket 7 are attached. Attach the separator member 6 to the plate. Thereby, the separator member 6 can be easily disposed at a position different from the intake manifold 5 and the mount bracket 7 disposed in the portion above the rotation axis A of the crankshaft 10a.
  • the suction port 62 is provided in the lower part of the separator member 6, so that even if oil is sucked into the separator member 6, the lower part of the separator member 6 is sucked by utilizing the weight of the oil.
  • the oil can be easily discharged from the port 62 to the oil reservoir 30.
  • the lower end 62 b of the suction port 62 of the separator member 6 is disposed above the oil level of the oil stored in the oil storage unit 30, so that the suction port 62 is reliably connected to the oil storage unit 30.
  • the oil stored in 30 can be disposed above the oil level.
  • the suction port 62 is formed in a vertically long oval shape having a major axis extending in the Z-axis direction (vertical direction) and a minor axis extending in the X-axis direction, so that the longitudinal suction port 62 is formed. Even when the oil separated from the lower portion of the gas is discharged, blow-by gas can be efficiently sucked from the upper portion of the suction port 62 having a vertically long shape and a large vertical length. Further, even if the oil in the oil reservoir 30 reaches the suction port 62 due to the inclination of the engine body 10 or the like, the entire suction port 62 is made of oil by the vertically long suction port 62 extending in the vertical direction. Occlusion can be suppressed. Thereby, it can suppress that the distribution
  • the discharge port 64 for discharging blow-by gas at the upper end portion 61 b of the separator member 6 it is utilized that liquid oil is more susceptible to gravity than gas blow-by gas.
  • the oil separated in the separator member 6 can be prevented from reaching the discharge port 64 provided in the vicinity of the upper end of the separator member 6.
  • the suction port 62 is provided in the lower portion of the separator member 6 and the discharge port 64 is provided in the upper end portion 61b of the separator member 6, so that the exhaust port provided in the upper end portion 61b from the lower portion of the separator member 6 is provided. Since the blow-by gas can be separated into gas and liquid in a wide range up to the outlet 64, the blow-by gas can be separated efficiently.
  • the blow-by gas is discharged upward of the PCV valve 8 by directly attaching the PCV valve 8 to the discharge port 64 so as to protrude upward from the upper end portion 61 b of the separator member 6. Therefore, blow-by gas can be easily supplied to the upper part of the engine body 10.
  • the intake manifold 5 is attached above the separator member 6, and the tube member 9 that guides the blow-by gas discharged from the discharge port 64 of the separator member 6 to the intake manifold 5 is provided.
  • the separator member 6 and the intake manifold 5 attached above the separator member 6 can be connected via the tube member 9 on the same outer side surface 10b of the engine body 10, the separator member 6 can be The length of the tube member 9 reaching the manifold 5 can be effectively shortened. Thereby, the blow-by gas separated by the separator member 6 can be efficiently supplied (returned) to the intake manifold 5.
  • the crankcase 3 is provided with an opening 31 having a shape corresponding to the suction port 62 of the separator member 6 and communicating with the suction port 62. Accordingly, the opening 31 that communicates with the suction port 62 can be easily provided in the crankcase 3 that does not require high rigidity as compared with the cylinder block 2.
  • the opening 31 having a shape corresponding to the suction port 62 of the separator member 6 to the suction port 62, it is possible to easily attach the suction port 62 of the separator member 6 to the opening 31 of the crankcase 3.
  • the blow-by gas from the engine body 10 can be circulated inside the separator member 6.
  • the separator member 6 is resin, compared with the case where a separator member is metal, since the heat conductivity of the separator member 6 can be reduced, in cold districts etc. During the traveling, it is possible to prevent the moisture inside the separator member 6 from freezing due to the cold traveling wind.
  • FIGS. 1-10 An engine 200 according to a second embodiment of the present invention will be described with reference to FIGS.
  • the engine 200 is an example of the “internal combustion engine” in the present invention.
  • a separator member 206 (a separator for an internal combustion engine) is attached to the outer surface 10b of the engine body 10.
  • the PCV valve 8 is attached in the horizontal direction (Y-axis direction) at the upper portion of the separator member 206 on the Y2 side.
  • the tube member 9 connected horizontally to the PCV valve 8 extends while changing its direction upward (in the direction of arrow Z1) and is connected to the surge tank 5a (see FIG. 1).
  • liquid oil adhering to the crankshaft 10a is scattered by turning of the crankshaft 10a. For this reason, it adheres to the inner surface 10 d of the engine body 10 vertically above the opening 31 and flows toward the opening 31 (the suction port 62 of the separator member 206) or scatters toward the opening 31.
  • the separator member 206 is provided with an upper inflow restricting portion 67 that restricts the liquid oil in the engine body 10 from flowing into the separator member 206 through the suction port 62.
  • the upper inflow restricting portion 67 is an example of the “liquid oil inflow restricting portion” in the present invention.
  • the suction port 62 penetrates the lid 60 of the separator member 206 in the Y-axis direction.
  • the portions other than the upper edge portion 63b constituting the upper portion of the suction port 62 in the vertical direction (Z-axis direction) constitute a part of an oval shape elongated in the vertical direction so as to correspond to the opening 31.
  • the upper edge portion 63b is formed so as to have a mountain shape where the line segment intersects with the upper end 63a in the vertical direction, not the semicircular shape constituting a part of the oval shape when viewed from the Y1 side.
  • the shape of the suction port 62 is formed by positioning a base portion 261b for forming the upper inflow restricting portion 67 in the upper part of the elliptical vertical direction.
  • the suction port 62 has a substantially mirror image symmetry with respect to a center line C extending in the vertical direction (vertical direction, Z-axis direction).
  • the upper inflow restricting portion 67 is integrally formed with the separator member 206 by projecting in the arrow Y1 direction from the base portion 261b in the vicinity of the upper edge 63b in the vertical direction of the suction port 62. Further, the upper inflow restricting portion 67 is formed in a mountain shape when viewed from the Y1 side so as to be along the upper edge portion 63b of the suction port 62, and the “eave shape” that covers the entire suction port 62 from the upper side in the vertical direction ( Umbrella shape).
  • the upper edge portion 63 b of the suction port 62 is positioned slightly inside the inner surface of the opening portion 31. Is formed.
  • the upper inflow restricting portion 67 is configured to pass through the opening 31 and protrude to the crank chamber 10 c inside (inside) the engine body 10.
  • the upper inflow restricting portion 67 protrudes from the inner side surface 10d of the crank chamber 10c by a length L1 in the arrow Y1 direction.
  • the upper inflow restricting portion 67 has substantially mirror image symmetry with respect to the center line C, similarly to the suction port 62.
  • the upper inflow restricting portion 67 is inclined in the direction of the arrow X1 that is away from the center line C and downward in the vertical direction (the direction of the arrow Z2) in the inclined portion 67b from the top 67a on the center line C toward the X1 side.
  • the inclined portion 67c is inclined in the arrow X2 direction away from the center line C and downward in the vertical direction.
  • the inclined portions 67b and 67c of the umbrella-shaped upper inflow restricting portion 67 extend substantially horizontally without being inclined downward in the vertical direction in the Y-axis direction. Further, at the lower ends in the vertical direction of the inclined portions 67b and 67c of the upper inflow restricting portion 67, wall portions 67d extending slightly downward in the vertical direction are formed. The wall portion 67d is formed to extend along straight portions formed on both sides of the suction port 62 in the X-axis direction.
  • the liquid oil that has dropped on the upper surface in the vertical direction of the inclined portion 67b or 67c of the upper inflow restricting portion 67 is separated from the center line C along the inclination of the inclined portion 67b or 67c (the direction of the arrow X1 or X2). ) And vertically downward. Then, the liquid oil falls from the wall portion 67d of the upper inflow restricting portion 67 to the outside of the suction port 62 in the X-axis direction.
  • the inclined portions 67b and 67c extend substantially horizontally without being inclined downward in the vertical direction in the Y-axis direction, so that the front side of the suction port 62 (opening 31) from the end on the Y1 side of the upper inflow restricting portion 67. It is suppressed that liquid oil falls to (a position overlapping in the Y-axis direction). Thereby, it is suppressed that the liquid oil which fell to the front of the suction inlet 62 is sucked into the separator member 206 by negative pressure.
  • the other configurations of the second embodiment are the same as those of the first embodiment.
  • the liquid oil in the engine body 10 is restricted from flowing into the separator member 206 through the suction port 62 so as to protrude into the crank chamber 10 c inside the engine body 10.
  • An upper inflow restricting portion 67 is provided.
  • the liquid oil heading toward the suction port 62 can be blocked by the upper inflow restricting portion 67 protruding to the inside of the engine body 10, so that the liquid oil flows into the separator member 206 through the suction port 62.
  • the upper inflow restricting portion 67 is provided on the separator member 206 attached to the outer side surface 10 b of the engine main body 10 so as to protrude into the crank chamber 10 c inside the engine main body 10. Compared with the case where it provides in, it is not necessary to change the shape of the engine main body 10 significantly. Thus, the upper inflow restricting portion 67 that restricts the inflow of liquid oil can be easily provided in the engine 200.
  • the upper inflow restricting portion 67 is integrally formed with the separator member 206 by projecting from the base portion 261b near the upper edge 63b in the vertical direction of the suction port 62 to the Y1 side.
  • the separator member 206 is made of a resin that is lighter than the aluminum alloy constituting the engine body 10, so that the upper inflow restricting portion 67 is lighter than the case where the upper inflow restricting portion 67 is provided on the engine body 10 side.
  • the separator member 206 itself can be reduced in weight.
  • the upper inflow restricting portion 67 protrudes from the base portion 261b near the upper edge 63b in the vertical direction of the suction port 62 to the Y1 side, and extends along the upper edge 63b of the suction port 62.
  • the suction port 62 is formed in a “eave shape” that covers the entire suction port 62 from the upper side in the vertical direction.
  • the “eave-shaped” upper inflow restricting portion 67 can reliably prevent the liquid oil from flowing into the separator member 206 from the upper side in the vertical direction of the suction port 62.
  • the liquid oil flows into the suction port 62 by projecting the “eave-shaped” upper inflow restricting portion 67 from the vicinity of the upper edge 63 b in the vertical direction of the suction port 62 to the inside of the engine body 10.
  • Inflow into the separator member 206 from the upper side in the vertical direction can be effectively suppressed in the vicinity of the upper side in the vertical direction of the suction port 62.
  • the X1 side inclined portion 67b of the upper inflow restricting portion 67 is in the direction of the arrow X1 spaced from the center line C with respect to the center line C extending in the vertical direction of the suction port 62, and vertically downward (in the direction of arrow Z2).
  • the inclined portion 67c on the X2 side of the upper inflow restricting portion 67 is formed so as to be inclined in the direction of the arrow X2 away from the center line C and downward in the vertical direction.
  • the separator member 216 of the engine 250 is attached to the outer surface 10 b of the engine body 10. Further, the structure of the separator member 216 (the separator for the internal combustion engine) is defined by the direction when the separator member 216 is attached to the outer surface 10b of the engine body 10.
  • the engine 250 is an example of the “internal combustion engine” in the present invention.
  • the suction port 262 of the separator member 216 is different from the suction port 62 (see FIGS. 8 and 9) of the second embodiment in that the base 261 b is not provided, thereby opening the opening 31.
  • the suction port 262 is configured so that the upper edge 263 b including the vertical upper end 263 a of the suction port 262 is located slightly below the inner surface of the opening 31 (Z2 side). It is formed in an oval shape slightly smaller than the opening 31.
  • the suction port 262 is formed so as to have a substantially mirror image symmetry with respect to a center line C extending in the vertical direction of the suction port 262.
  • the separator member 216 has an upper inflow that restricts the liquid oil in the engine body 10 from flowing into the flow path R inside the separator member 216 via the suction port 262.
  • a restricting portion 267 is provided.
  • the upper inflow restricting portion 267 is formed integrally with the lid portion 260 of the separator member 216 by projecting to the Y1 side between the groove portion 60a and the suction port 262 and from the lid portion 260 in the vicinity of the upper edge portion 263b. Has been.
  • the upper inflow restricting portion 267 is formed in a semicircular shape when viewed from the Y1 side along the semicircular upper edge 263b of the suction port 262, and the entire suction port 262 is formed on the upper side in the vertical direction (Z1 It has a “eave shape” that covers from the side.
  • the upper edge 263b of the suction port 262 is slightly lower than the inner surface of the opening 31 in the vertical direction (Z2 side).
  • the upper inflow restricting portion 267 is configured to pass through the opening 31 and protrude to the crank chamber 10 c inside (inside) the engine body 10.
  • the upper inflow restricting portion 267 protrudes from the inner side surface 10d of the crank chamber 10c by a length L2 in the arrow Y1 direction.
  • the upper inflow restricting portion 267 has a substantially mirror image symmetry with respect to the center line C, similarly to the suction port 262.
  • the upper inflow restricting portion 267 is, in the arc-shaped portion 267b from the top portion 267a on the center line C toward the X1 side, in the direction of the arrow X1 that is separated from the center line C and downward in the vertical direction (direction of the arrow Z2). It is formed in an arc shape so as to incline, and in the arc-shaped portion 267c from the top portion 267a on the center line C toward the X2 side, it inclines in the arrow X2 direction away from the center line C and downward in the vertical direction. It is formed in a circular arc shape. Further, the arc-shaped portions 267b and 267c of the upper inflow restricting portion 267 are formed to extend substantially horizontally without being inclined downward in the vertical direction in the Y-axis direction.
  • the liquid oil that has dropped on the upper surface in the vertical direction of the arc-shaped portion 267b or 267c of the upper inflow restricting portion 267 is separated from the center line C along the arc-shaped portion 267b or 267c (in the direction indicated by the arrow X1 or X2). Direction) and vertically downward. Then, the liquid oil falls from the upper inflow restricting portion 267 to the outside of the suction port 262 in the X-axis direction.
  • the arc-shaped portions 267b and 267c of the upper inflow restricting portion 267 are formed so as to extend substantially horizontally without inclining vertically downward in the Y-axis direction, so that the end of the upper inflow restricting portion 267 on the Y1 side
  • the liquid oil is suppressed from dropping from the portion to the front surface (position overlapping in the Y-axis direction) of the suction port 262 (opening 31). Thereby, it is suppressed that the liquid oil which fell to the front of the suction inlet 262 is sucked into the separator member 216 by negative pressure.
  • the other structure of the 1st modification of 2nd Embodiment is the same as that of the said 2nd Embodiment.
  • the liquid oil in the engine body 10 passes through the suction port 262 so as to protrude into the crank chamber 10 c inside the engine body 10.
  • An upper inflow restricting portion 267 that restricts the inflow into the air is provided.
  • it can suppress that the amount of oil consumption increases by the upper inflow control part 267.
  • FIG. 2 by providing the upper inflow restricting portion 267 so as to protrude into the crank chamber 10c inside the engine body 10 on the separator member 216 attached to the outer side surface 10b of the engine body 10, as in the second embodiment, An upper inflow restricting portion 267 that restricts the inflow of liquid oil can be easily provided in the engine 250.
  • the upper inflow restricting portion 267 is formed along the semicircular vertical upper edge portion 263b of the suction port 262.
  • the upper inflow restricting portion 267 can be formed so as to correspond to the opening 31, so that the gap between the opening 31 and the upper inflow restricting portion 267 can be reduced.
  • the amount of oil used to lubricate the sliding portion of the engine body 10 due to the liquid oil remaining in the gap between the opening 31 and the upper inflow restricting portion 267 is suppressed. Can do.
  • the remaining effects of the first modification of the second embodiment are similar to those of the aforementioned second embodiment.
  • a separator member 306 (a separator for an internal combustion engine) of the engine 300 is attached to the outer surface 10 b on the Y2 side of the engine body 10. Further, the structure of the separator member 306 is defined by the direction when the separator member 306 is attached to the outer surface 10 b of the engine body 10.
  • Engine 300 is an example of the “internal combustion engine” in the present invention.
  • the lid 360 of the separator member 306 is formed with an oval opening 360c that is long in the vertical direction (Z-axis direction) so as to correspond to the opening 31 of the engine body 10.
  • the opening part 31 and the opening part 360c of the cover part 360 are formed in substantially the same size.
  • the separator member 306 has a lower inflow restricting portion that restricts the liquid oil in the engine body 10 from flowing into the flow path R inside the separator member 306 via the suction port 362. 368 is provided.
  • the lower inflow restricting portion 368 is formed vertically upward (Z1 side) with respect to the oil level of the liquid oil in the oil reservoir 30, and is integrated with the lower portion in the vertical direction of the main body 361 of the separator member 306. Is formed.
  • the vertical upper surface 368a of the lower inflow restricting portion 368 communicates with the inclined portion 361a of the main body portion 361 of the separator member 306, and the engine main body 10 side.
  • the inclined portion 361a of the separator member 306 is inclined downward in the vertical direction so as to pass through the suction port 362 from the inside of the separator member 306 and protrude in the arrow Y1 direction, and the upper surface 368a of the lower inflow restricting portion 368. Doubles as
  • the upper portion and the central portion of the suction port 362 in the vertical direction are configured by the opening 360 c of the lid portion 360, and the lower portion of the suction port 362 in the vertical direction is the lower inflow restricting portion 368.
  • the upper surface 368a (inclined part 361a) of this is comprised. That is, the lower inflow restricting portion 368 is formed at the lower end of the suction port 362 in the vertical direction and in the vicinity thereof.
  • the end 368c on the engine body 10 side (Y1 side) of the lower inflow restricting portion 368 is vertically above the lower end in the vertical direction of the opening portion 360c of the lid portion 360 and the lower end in the vertical direction of the opening portion 31. Configured to be located.
  • the lower inflow restricting portion 368 is formed so as to pass through the opening 31 and protrude to the crank chamber 10 c inside (inside) the engine body 10. Note that the lower inflow restricting portion 368 protrudes from the inner surface 10d of the crank chamber 10c by a length L3 (see FIG. 13) in the arrow Y1 direction.
  • the lower surface 368b in the vertical direction of the lower inflow restricting portion 368 is formed substantially horizontally. Then, the liquid oil from the oil storage part 30 in the lower vertical direction collides with the lower surface 368b of the lower inflow restricting part 368, so that it is not sucked from the suction port 362 and is returned to the oil storage part 30 again. Has been.
  • the lower inflow restricting portion 368 protrudes in the arrow Y1 direction in a trapezoidal shape when viewed from above in the vertical direction (Z1 side). That is, the end portion 368c on the Y1 side of the lower inflow restricting portion 368 extends by a predetermined length in the X-axis direction. Further, the vertical upper surface 368a (inclined portion 361a) of the lower inflow restricting portion 368 is inclined in the arrow Y1 direction and vertically downward (Z2 direction), but not in the X-axis direction. As shown in FIG. 15, the suction port 362 and the lower inflow restricting portion 368 are formed so as to be substantially mirror-image symmetric with respect to the center line C. In addition, the other structure of 3rd Embodiment is the same as that of the said 2nd Embodiment.
  • the liquid oil in the engine body 10 flows into the separator member 306 through the suction port 362 so as to protrude into the crank chamber 10 c inside the engine body 10.
  • a lower inflow restricting portion 368 for restriction is provided.
  • the separator member 306 attached to the outer side surface 10b of the engine body 10 is provided with a lower inflow restricting portion 368 so as to protrude into the crank chamber 10c inside the engine body 10, so that the same as in the second embodiment.
  • the engine 300 can be easily provided with the lower inflow restricting portion 368 that restricts the inflow of liquid oil.
  • the lower inflow restricting portion 368 is formed vertically above the oil level of the liquid oil in the oil reservoir 30 and in the vicinity of the lower end of the suction port 362 in the vertical direction.
  • the liquid oil in the oil reservoir 30 is scattered toward the suction port 362 in the vertical direction due to the vibration of the engine body 10, or the liquid oil oil is tilted when the vehicle in which the engine 300 is disposed is inclined.
  • the lower inflow restricting portion 368 can reliably prevent the liquid oil from flowing into the separator member 306.
  • the main body 361 of the separator member 306 is inclined downward in the vertical direction from the inside of the separator member 306 through the suction port 362 to the crank chamber 10c inside the engine main body 10 and An inclined portion 361a constituting the upper surface 368a in the vertical direction of the inflow restricting portion 368 is formed.
  • the oil mist (liquid oil) liquefied in the separator member 306 is reliably returned to the oil reservoir 30 via the inclined portion 361a inclined downward in the vertical direction to the crank chamber 10c inside the engine body 10. be able to.
  • the remaining effects of the third embodiment are similar to those of the aforementioned second embodiment.
  • the engine 400 is an example of the “internal combustion engine” in the present invention.
  • the engine 400 has an intake manifold 5 and a separator member 406 attached to the outer side surface 10 b of the engine body 10.
  • the separator member 406 (internal combustion engine separator) is connected to the first suction path 406a, the discharge path 406b, and the second suction path 406c.
  • the intake manifold 5 includes a blow-by gas introduction port 53 provided on the lower surface of the surge tank 5a.
  • the intake manifold 5 is an example of the “intake device” in the present invention.
  • the separator member 406 includes a suction port 62 to which the first suction path 406a is connected, a discharge port (discharge port) 64 to which the discharge path 406b is connected, a suction port 62 and a discharge port. And a flow path R (see FIG. 18) connecting the The separator member 406 includes a connection port 464 to which the second suction path 406c is connected. Further, as shown in FIG. 19, the suction port 62 is provided at the lower end portion of the separator member 406. The suction port 62 communicates with the inside of the engine body 10 by being directly connected to the opening 31 formed in the engine body 10 without a piping member.
  • connection port 464 is disposed at a position closer to the discharge port 64 than the suction port 62 inside the separator member 406 (flow path R). In the fourth embodiment, the connection port 464 is arranged at the upper end portion (the other end portion) of the flow path R in the same manner as the discharge port 64.
  • the first suction path 406 a communicates the separator member 406 with the interior of the engine body 10 below the combustion chamber 15 formed in the upper part of the plurality (four) cylinders 21 of the cylinder block 2. It is provided to let you.
  • the first suction path 406 a is a gas conduction path for introducing blow-by gas inside the engine body 10 into the separator member 406.
  • the first suction path 406 a is connected to the opening 31 of the engine body 10. That is, in the fourth embodiment, the first suction path 406 a is a path that is directly connected by the opening 31 and the suction port 62.
  • the first suction path 406a may be a path in which the opening 31 and the suction port 62 are connected by piping or the like.
  • the discharge path 406b is provided so that the separator member 406 communicates with the inside of the intake manifold 5.
  • the discharge path 406b is a gas conduction path for reducing the blow-by gas in the separator member 406 to the intake manifold 5 on the intake side.
  • the discharge path 406 b connects the discharge port 64 (PCV valve 8) of the separator member 406 and the introduction port 53 of the intake manifold 5.
  • the discharge side of the PCV valve 8 provided at the discharge port 64 and the introduction port 53 are directly connected by the tube member 9. That is, the discharge path 406 b is a path in which the discharge port 64 (PCV valve 8) and the introduction port 53 are connected by the tube member 9.
  • the second suction path 406 c is provided so that the separator member 406 communicates with the interior of the engine body 10 above the combustion chamber 15.
  • the second suction path 406c is a bypass path that communicates when the negative pressure in the separator member 406 increases.
  • the second suction path 406 c communicates with the inside of the head cover 4.
  • the second suction path 406 c is provided so as to connect the connection port 464 of the separator member 406 and the lead-out port 41 of the head cover 4.
  • the connection port 464 of the separator member 406 and the outlet port 41 of the head cover 4 are directly connected by a bypass pipe 408. That is, in the fourth embodiment, the second suction path 406 c is a path in which the connection port 464 and the outlet port 41 are connected by the bypass pipe 408. As will be described later, the second suction path 406c is normally disconnected.
  • connection port 464 is disposed at the upper end of the flow path R that is the same as the discharge port 64, the second suction path 406 c connected to the connection port 464 is the suction of the flow path R.
  • the separator member 406 is connected at a position closer to the discharge port 64 than the port 62.
  • the bypass pipe 408 is formed of a pipe member formed separately from the engine body 10 and the separator member 406.
  • the second suction path 406c is provided with a one-way valve 466 that is provided in a valve-closed state and is opened based on an increase in negative pressure in the separator member 406.
  • the one-way valve 466 is attached to the separator member 406 at the end of the second suction path 406c on the separator member 406 side. That is, the one-way valve 466 is attached to the connection port 464 of the separator member 406, and the bypass pipe 408 is connected to the suction side of the one-way valve 466.
  • the one-way valve 466 includes, for example, a valve body 66a for opening and closing the valve, and an urging member 66b for urging the valve body 66a toward the valve closing side (head cover 4 side).
  • a tensile force that overcomes the urging force of the urging member 66b acts on the valve body 66a, so that the valve body 66a opens in the valve opening direction.
  • the one-way valve 466 is biased to a position (see a solid line in FIG.
  • the valve body 66a closes the connection port 464 in a normal state where the negative pressure in the separator member 406 is less than a predetermined threshold value.
  • the valve closing state is configured to be maintained.
  • the negative pressure in the separator member 406 is a differential pressure between the internal pressure on the head cover 4 side (internal pressure of the bypass pipe 408) that is the suction side of the one-way valve 466 and the internal pressure of the separator member 406.
  • the engine 400 according to the fourth embodiment is mounted on a vehicle 401 adopting, for example, an FR (front engine / rear drive) drive system.
  • the engine main body 10 is disposed so that the crankshaft 10 a extends along the front-rear direction of the vehicle 401 (see FIG. 20), and is attached to the vehicle 401 by the mount bracket 7.
  • the arrow X1 direction is the front of the vehicle 401
  • the arrow X2 direction is the rear of the vehicle 401.
  • Crankshaft 10 a is connected to the power transmission device of vehicle 401 from the rear side of engine 400. In this case, an air flow (traveling wind) taken into the vehicle 401 when the vehicle 401 travels flows from the vehicle front side (X1 side) in the direction of the arrow X2.
  • the second suction path 406c is provided so as to directly connect the engine body 10 and the separator member 406 to the intake manifold 5 through the rear side (X2 side) of the vehicle 401.
  • the bypass pipe 408 connects the outlet port 41 of the head cover 4 and the connection port 464 (one-way valve 466) of the separator member 406 through the rear side of the vehicle 401 to the intake manifold 5.
  • the bypass pipe 408 (second suction path 406 c) is connected to the one end 81 connected to the one-way valve 466 (connection port 464) of the separator member 406 and to the outlet port 41 of the head cover 4.
  • the mounting bracket 7 and the intake manifold 5 are provided so as to bypass the rear side (X2 side).
  • the mount bracket 7 is attached to the lower side (Z2 side) of the intake manifold 5 on the outer side surface 10b of the engine body 10 on the Y2 side.
  • the mount bracket 7 is disposed between the intake manifold 5 and the separator member 406.
  • the tube member 9 (connection piping) of the discharge path 406b directly connects the introduction port 53 and the PCV valve 8 through the through hole 7b provided in the mount bracket 7 as shown in FIG. .
  • the tube member 9 passes (through) the through hole 7b in a straight line in the vertical direction.
  • the tube member 9 of the discharge path 406b may be provided so as to bypass the rear side of the intake manifold 5 and the mount bracket 7 similarly to the bypass pipe 408.
  • an intake port 1 a and an exhaust port 1 b communicating with the cylinder 21 are provided inside the cylinder head 1.
  • the four cylinders 21 are respectively supplied with intake air from four distribution pipes 51 (see FIG. 17) via the intake port 1a.
  • a space surrounded by the upper end of the cylinder 21, the upper surface of the piston 22 at the top dead center position, and the recess of the cylinder head 1 is a combustion chamber 15.
  • the head cover 4 to which the second suction path 406c is connected has a lower end connected to the upper end (Z1 side) of the cylinder head 1 and is disposed above the combustion chamber 15.
  • the crankcase 3 (opening 31) to which the first suction path 406a is connected is disposed below the combustion chamber 15.
  • the operation of the second suction path 406c will be described.
  • blow-by gas is sucked into the suction port 62 of the separator member 406 by the negative pressure of the intake manifold 5.
  • the separator member 406 and the inside of the crank chamber 10c are in communication with each other via the first suction path 406a, and the negative pressure of the separator member 406 is maintained below the threshold value of the one-way valve 466. For this reason, the one-way valve 466 is maintained in a closed state, and the second suction path 406c is in a non-communication state.
  • the blow-by gas sucked into the suction port 62 is separated into gas and liquid by the separator member 406 and then returned to the surge tank 5a of the intake manifold 5 from the discharge path 406b.
  • the blow-by gas reduced into the surge tank 5a is supplied to the intake ports 1a through the distribution pipes 51 together with the intake air.
  • the opening 31 (suction) The mouth 62) may be blocked by oil.
  • both the first suction path 406a and the second suction path 406c are closed, so that the negative pressure temporarily increases.
  • the negative pressure of the separator member 406 increases to a value equal to or larger than the threshold value of the one-way valve 466
  • the one-way valve 466 is opened as shown by a two-dot chain line in FIG.
  • the inside of the separator member 406 and the inside of the head cover 4 are connected via the 2nd suction path 406c.
  • the gas HG from the head cover 4 is introduced into the separator member 406 from the connection port 464 through the second suction path 406c.
  • the gas HG introduced from the connection port 464 does not flow toward the suction port 62 in the flow path R, but is sucked out from the nearby discharge port 64 to the discharge path 406b.
  • the flow of the gas HG introduced from the connection port 464 is prevented from transporting oil droplets that block the suction port 62 to the discharge path 406b.
  • the first suction path 406 a that communicates with the interior of the engine body 10 below the combustion chamber 15, the discharge path 406 b that communicates with the interior of the intake manifold 5, and the combustion chamber 15
  • the separator member 406 is connected to the second suction path 406c communicating with the inside of the engine body 10 at the upper side, and the second suction path 406c is provided in a valve-closed state to increase the negative pressure in the separator member 406.
  • a one-way valve 466 is provided that is opened on the basis thereof.
  • the one-way valve 466 is opened to release the separator member 406 and the engine.
  • the inside of the main body 10 can be bypassed by the second suction path 406c.
  • the increase in the negative pressure in the separator member 406 can be quickly eliminated. Accordingly, even when the blow-by gas suction port 62 in the first suction path 406a is blocked by oil, it is possible to suppress the suction of oil droplets to the intake manifold 5 side.
  • the one-way valve 466 can be closed during the normal state so that the second suction path 406c can be closed, so the second suction path 406c is provided. Even in this case, the ventilation performance of the blow-by gas on the first intake path 6a side can be maintained.
  • the second suction path 406 c is provided so as to communicate with the inside of the head cover 4.
  • the second suction path 406c can be easily provided because the second suction path 406c can be connected to the head cover 4 in which the lead-out port 41 can be easily formed.
  • the second suction path 406c is connected to the head cover 4 separated from the oil reservoir 30, it is possible to prevent the second suction path 406c from being blocked by oil.
  • the one-way valve 466 is attached to the separator member 406 at the end of the second suction path 406c on the separator member 406 side. Thereby, the one-way valve 466 can be brought close to the inside of the separator member 406. As a result, since the responsiveness to the pressure change in the separator member 406 can be improved, the second suction path 406c can be opened and closed quickly.
  • the second suction path 406c is provided so that the engine body 10 and the separator member 406 are directly connected to the intake manifold 5 through the rear side (X2 side) of the vehicle 401.
  • the intake manifold 5 is disposed in front of the second suction path 406c, so that the traveling wind of the traveling vehicle 401 is prevented from hitting the second suction path 406c.
  • the vehicle 401 travels in a cold environment, it is possible to prevent water contained in the gas in the second suction path 406c from being frozen by the travel wind.
  • the engine body 10 is provided with an opening 31 disposed below the rotational axis A of the crankshaft 10a. Then, the first suction path 406 a of the separator member 406 is connected to the opening 31. Thereby, the opening part 31 can be arrange
  • the opening 31 is arranged in the vicinity of the oil surface.
  • the blow-by gas suction port 62 is blocked by oil, It is possible to suppress sucking up the droplets.
  • the second suction path 506c passes the engine body 10 and the separator member 406 through the front side (X1 side) of the vehicle 401 (see FIG. 20) with respect to the intake manifold 5.
  • the bypass pipe 508 is provided so as to directly connect the lead-out port 541 of the head cover 4 and the connection port 564 of the separator member 406 to the intake manifold 5 through the front side of the vehicle 401.
  • the mounting bracket 7 is not shown.
  • Engine 500 is an example of the “internal combustion engine” in the present invention.
  • the bypass pipe 508 (second suction path 506 c) is provided so as to bypass the front side of the intake manifold 5 between the one end 81 and the other end 82.
  • the connection port 564 is provided on the upper surface (side surface on the Z1 side) of the separator member 406, and one end 81 of the bypass pipe 508 is connected to the one-way valve 466 from the Z1 side.
  • a lead-out port 541 is provided at a position on the front side of the head cover 4 (X1 side portion) in front of the intake manifold 5, and the other end 82 of the bypass pipe 508 is connected to the lead-out port 541. Yes.
  • the engine 500 is particularly effective in a case where an installation space for the auxiliary devices 502 is provided on the front side (X1 side) of the intake manifold 5.
  • the bypass pipe 508 (second suction path 506c) is provided so as to pass on the front side (X1 side) of the intake manifold 5 and on the rear side (X2 side) of the installation space for the auxiliary devices 502. .
  • the bypass pipe 508 (second suction path 506c) is disposed on the downstream side (X2 side) of the auxiliary devices 502 with respect to the traveling wind flowing in the arrow X2 direction.
  • the remaining configuration of the fifth embodiment is similar to that of the aforementioned fourth embodiment.
  • the increase in the negative pressure in the separator member 406 can be quickly eliminated, so the blow-by gas suction port 62 in the first suction path 406a. Even when the oil is blocked by oil, it is possible to prevent the oil droplets from being sucked into the intake manifold 5 side.
  • the traveling wind of the vehicle 401 traveling by these auxiliary devices 502 is bypass piping 508. It can suppress hitting (2nd suction path 506c). As a result, even when the vehicle 401 travels in a cold environment, it is possible to prevent water in the bypass pipe 508 (second suction path 506c) from freezing due to traveling wind.
  • the remaining effects of the fifth embodiment are similar to those of the aforementioned fourth embodiment.
  • FIGS. 20 and 22 a sixth embodiment will be described with reference to FIGS. 20 and 22.
  • the second suction path 606c passes through the intake manifold 605 and passes through the engine.
  • An example in which the main body 10 and the separator member 406 are provided so as to be directly connected will be described.
  • symbol is attached
  • the intake manifold 605 is an example of the “intake device” in the present invention.
  • the second suction path 606c is provided so as to pass through the intake manifold 605 and directly connect the engine body 10 and the separator member 406.
  • the engine 600 is an example of the “internal combustion engine” in the present invention.
  • the intake manifold 605 includes a relay passage portion 651 constituting a part of the second suction passage 606c.
  • the relay passage portion 651 is a gas passage provided so as to connect the first connection port 652 provided on the lower surface of the intake manifold 605 and the second connection port 653 provided on the upper surface of the intake manifold 605. Further, the relay passage portion 651 is provided independently without being connected to the distribution pipe 51 and the surge tank 5a.
  • the first connection port 652 is provided downward on the lower surface of the surge tank 5a.
  • the relay passage part 651 extends along the peripheral wall part of the surge tank 5 a and is provided so as to pass between the two distribution pipes 51 at the center among the four distribution pipes 51.
  • the second connection port 653 is provided upward at a position between the two distribution pipes 51 at the center.
  • the second suction path 606c includes a first portion 661 that connects the separator member 406 and one end (first connection port 652) of the relay passage portion 651, the other end (second connection port 653) of the relay passage portion 651, and the engine. And a second portion 662 connecting the main body 10.
  • the 1st part 661 and the 2nd part 662 consist of a pipe member similar to the bypass piping 408 of the said 4th Embodiment, respectively. More specifically, one end of the first portion 661 is connected to the one-way valve 466 of the connection port 664 from the Z1 side, and the other end of the first portion 661 is connected to the first connection port 652 from the Z2 side.
  • the second suction path 606 c allows the inside of the head cover 4 and the separator member 406 to communicate with each other via the lead-out port 641.
  • the lead-out port 641 is disposed at the center of the head cover 4 in the X-axis direction, and the position in the X-axis direction corresponds to the position of the second connection port 653 in the X-axis direction.
  • the second suction path 606c is configured by the first portion 661, the second portion 662, and the relay passage portion 651. The remaining configuration of the sixth embodiment is similar to that of the aforementioned fourth embodiment.
  • the increase in the negative pressure in the separator member 406 can be quickly eliminated, so the blow-by gas suction port 62 in the first suction path 406a. Even when the oil is blocked by oil, it is possible to prevent the oil droplets from being sucked up to the intake manifold 605 side.
  • the relay passage portion 651 that constitutes a part of the second suction path 606c is formed inside the intake manifold 605. Then, a first portion 661 that connects the separator member 406 and the first connection port 652 of the relay passage portion 651, and a second portion 662 that connects the second connection port 653 of the relay passage portion 651 and the engine body 10 are provided. A second suction path 606c is provided. Accordingly, since the second suction path 606c passes through the intake manifold 605, it is possible to suppress the traveling wind of the traveling vehicle 401 from hitting the second suction path 606c. As a result, when the vehicle 401 travels in a cold environment, moisture contained in the gas in the second suction path 606c can be prevented from freezing by the traveling wind.
  • the remaining effects of the sixth embodiment are similar to those of the aforementioned fourth embodiment.
  • the separator member 6 is attached to the outer surface 10b on the Y2 side of the engine body 10 (the cylinder block 2 and the crankcase 3), but the present invention is not limited to this.
  • the separator member 6 is attached to the outer surface 3a on the Y2 side of the crankcase 203, while being attached to the outer surface 2b of the cylinder block 202. It does not have to be attached. Thereby, it is possible to reliably suppress a decrease in the rigidity of the cylinder block 202.
  • the separator member 6 as a whole can be arranged in the vicinity of the oil stored in the crankcase 203, when traveling in a cold district or the like, moisture inside the separator member 6 is caused by the cold traveling wind. It is possible to suppress freezing. At this time, it is necessary to dispose the suction port 62 of the separator member 6 above the oil surface of the oil, and the tube member 209 (connection piping) corresponding to the disposition of the separator member 6 below the first embodiment. Need to be longer.
  • the engine 150 and the engine body 210 are examples of the “internal combustion engine” and the “internal combustion engine body” of the present invention, respectively, and the tube member 209 is an example of the “blow-by gas passage portion” of the present invention. Note that the above modification can also be applied to the second to sixth embodiments.
  • the tube member 9 is provided so as to guide the blow-by gas discharged from the discharge port 64 of the separator member 6 into the surge tank 5a.
  • the blow-by gas discharged from the discharge port 364 (see FIG. 25) of the separator member 126 is used as the surge tank of the intake manifold 305 as in the engine 160 of the second modification of the first embodiment shown in FIG.
  • the tube member 309 may be configured to lead to each of the intake ports 305b branched into four instead of 305a.
  • the tube member 309 includes a lower part 309a attached to the PCV valve 308 and an upper part 309b branched from the lower part 309a into four parts.
  • the engine 160 and the separator member 126 are examples of the “internal combustion engine” and the “separator for the internal combustion engine” of the present invention, respectively.
  • the PCV valve 308 and the tube member 309 are examples of the “control valve” and the “blow-by gas passage portion” of the present invention, respectively.
  • the discharge port 364 of the main body 126a of the separator member 126 is Y2 near the upper end on the Z1 side of the separator member 126 (main body 126a). It is formed in the side part of the side.
  • the PCV valve 308 is directly attached to the discharge port 364 so as to protrude from the lateral side portion of the separator member 126 on the Y2 side in the lateral direction (arrow Y2 direction).
  • the tube member 309 can be easily routed so as to avoid the mount bracket 307, so that it is not necessary to provide a through hole in the mount bracket 307.
  • the discharge port 64 of the separator member 6 is provided in the upper end part 61b of the separator member 6, and the example which attaches the PCV valve
  • the discharge port 364 of the separator member 126 is provided in the lateral side portion on the Y2 side near the upper end on the Z1 side of the separator member 126 (main body portion 126a), and the PCV valve 308 is provided.
  • the separator member 126 is attached to the discharge port 364 so as to protrude from the lateral side portion on the Y2 side of the separator member 126 in the lateral direction (Y2 direction), but the present invention is not limited to this.
  • the discharge port 464 (shown by a broken line) of the separator member 136 is connected to the Z1 side of the separator member 136 (main body portion 136a).
  • the PCV valve 708 may be attached to the discharge port 464 so as to protrude in the lateral direction (arrow X2 direction) from the lateral side portion of the separator member 136 on the X2 side.
  • the separator member 136 and the PCV valve 708 are examples of the “separator for an internal combustion engine” and the “control valve” of the present invention, respectively.
  • the engine body 10 includes the cylinder head 1, the cylinder block 2, and the crankcase 3.
  • a ladder frame may be inserted between the cylinder block and the crankcase, or an oil pan may be provided below the crankcase. That is, if the suction port of the separator member is disposed below the rotation axis A of the crankshaft and above the oil level of the oil stored in the oil reservoir,
  • the configuration is not particularly limited.
  • the PCV valve 8 is directly attached to the discharge port 64 of the separator member 6 .
  • the present invention is not limited to this.
  • the PCV valve may be indirectly attached to the outlet of the separator member via a member such as a tube.
  • the cylinder block 2 and the crankcase 3 are configured separately, but the present invention is not limited to this.
  • the cylinder block and the crankcase may be configured integrally.
  • a sliding member such as a piston slides in a portion above the rotation axis A of the crankshaft corresponding to the cylinder block, high rigidity is required, and as a result, the shape change is It's not easy.
  • the configuration of the present invention it is possible to prevent the shape of the engine body from changing significantly in the portion above the rotation axis A of the crankshaft.
  • the opening 31 of the crankcase 3 and the suction port 62 of the separator member 6 are both formed in a vertically long oval shape, but the present invention is not limited to this.
  • the opening of the crankcase and the inlet of the separator member may be formed in a vertically long oval shape or may be formed in a vertically long rectangular shape.
  • the opening of the crankcase and the inlet of the separator member may be formed in a perfect circle.
  • the separator member 6 is attached to the outer surface 10b of the engine body 10 to which the intake manifold 5 and the mount bracket 7 are attached.
  • a separator member may be attached to the outer surface of the engine body to which an exhaust device such as an exhaust manifold is attached.
  • the present invention is not limited to this. That is, if it is an internal combustion engine, the present invention may be applied to gas engines other than gasoline engines (internal combustion engines such as diesel engines and gas engines). Further, the present invention may be applied to an internal combustion engine that is installed as a drive source (power source) of equipment other than an automobile, for example.
  • the oil separator 6 (206) is provided with an upper inflow restricting portion 67 (267).
  • the oil separator 306 has a lower side.
  • the inflow restricting portion 368 is provided, the present invention is not limited to this.
  • the oil separator 226 is provided with an upper inflow restricting portion 67 and a lower inflow restricting portion that protrude into the crank chamber 10c inside the engine body 10. Both parts 368 may be provided.
  • the upper inflow restricting portion 67 (267, liquid oil inflow restricting portion) is integrally provided in the oil separator 6 (226), and the third embodiment described above.
  • the lower inflow restricting portion 368 (liquid oil inflow restricting portion) is integrally provided in the oil separator 306, but the present invention is not limited to this.
  • the liquid oil inflow restricting portion may be provided separately from the oil separator. That is, the liquid oil inflow restricting portion that is separate from the oil separator may be provided on the oil separator by screwing or the like.
  • the upper inflow restricting portion 67 (267) is in the vertical direction in the Y-axis direction (through direction of the opening 31 and the suction port 62 (262)).
  • the present invention is not limited to this.
  • the upper inflow restricting portion may be formed so as to be inclined in the vertical direction in the direction of penetration of the opening and the suction port.
  • the upper inflow restricting portion is formed on the side opposite to the engine main body (Y2 side in FIG. 7) and inclined downward in the vertical direction, the upper inflow restricting portion is liquid at the end of the upper inflow restricting portion on the engine main body side. Since the oil can be prevented from being guided, it is possible to suppress the liquid oil from falling on the front surface of the suction port (opening).
  • the upper inflow restricting portion 67 is substantially mirror-symmetric with respect to the center line C extending in the vertical direction of the suction port 62 (262).
  • the inclined portions 67b and 67c (arc-shaped portions 267b and 267c) are formed so as to be inclined in the direction away from the center line C and downward in the vertical direction (Z2 direction). Is not limited to this.
  • the upper inflow restricting portion may be formed so as to have an “eave shape” that covers the suction port from the upper side in the vertical direction.
  • the upper inflow restricting portion 67 (267) is formed in an “eave shape” that covers the entire suction port 62 (262) from the upper side in the vertical direction.
  • the present invention is not limited to this.
  • the upper inflow restricting portion may be formed so as to cover only a part of the suction port from the upper side in the vertical direction.
  • the example which formed the upper inflow control part 67 (267, liquid oil inflow control part) in the perpendicular direction upper side of the suction inlet 62 (262) is shown.
  • the example in which the lower inflow restricting portion 368 (liquid oil inflow restricting portion) is provided on the lower side in the vertical direction of the suction port 362 is shown, but the present invention is not limited to this. In the present invention, the liquid oil inflow restricting portion may be formed only on the side of the suction port.
  • the engine mounted on the FR drive type vehicle 401 is exemplified, but the present invention is not limited to this. You may apply this invention to the engine mounted in the vehicle of what kind of drive system. In addition, the present invention may be applied to an engine mounted on any vehicle, not limited to an automobile, and the present invention may be applied to an internal combustion engine used for purposes other than a vehicle.
  • the oil separator (inertial collision type oil separator) having the separation portion including the flow path R having the labyrinth structure is shown, but the present invention is not limited to this.
  • a centrifugal oil separator that creates a swirling flow of blow-by gas in an oil separator and performs gas-liquid separation by centrifugal force, or a filter built-in type oil separator that performs gas-liquid separation by a filter that passes blow-by gas It may be.
  • the oil separator may be comprised by the combination of these several types of separation parts.
  • the second suction path may be connected to the cylinder head.
  • the second suction path may be provided so as to communicate with the interior of the engine body above the combustion chamber.
  • the first suction path is connected to the crankcase 3 (opening 31)
  • the present invention is not limited to this.
  • the first suction path may be connected to the cylinder block.
  • the first suction path only needs to be provided below the combustion chamber so as to communicate with the interior of the engine body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

Moteur à combustion interne comprenant : un corps de moteur à combustion interne qui comprend un vilebrequin et un carter d'huile pour stocker l'huile ; et un élément séparateur qui est monté sur une surface externe du corps de moteur à combustion interne, comprend une ouverture d'aspiration pour permettre au gaz de soufflage provenant du corps de moteur à combustion interne de s'écouler dans celui-ci, et sépare le gaz de soufflage, qui s'écoule depuis le corps de moteur à combustion interne, en gaz et en liquide. L'ouverture d'aspiration de l'élément séparateur est disposée au-dessous de l'axe de rotation du vilebrequin et au-dessus du niveau de l'huile stockée dans le carter d'huile.
PCT/JP2015/074017 2014-09-08 2015-08-26 Moteur à combustion interne et séparateur pour moteur à combustion interne WO2016039142A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2014182232A JP6413520B2 (ja) 2014-09-08 2014-09-08 内燃機関およびオイルセパレータ
JP2014-182232 2014-09-08
JP2014182144A JP2016056712A (ja) 2014-09-08 2014-09-08 内燃機関および内燃機関用セパレータ
JP2014-181948 2014-09-08
JP2014-182144 2014-09-08
JP2014181948A JP6413519B2 (ja) 2014-09-08 2014-09-08 内燃機関

Publications (1)

Publication Number Publication Date
WO2016039142A1 true WO2016039142A1 (fr) 2016-03-17

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WO (1) WO2016039142A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110295969A (zh) * 2018-03-23 2019-10-01 丰田自动车株式会社 内燃机及其制造方法
US10823019B2 (en) * 2018-07-31 2020-11-03 Ford Global Technologies, Llc Ducted positive crankcase ventilation plenum
CN114251156A (zh) * 2020-09-21 2022-03-29 深圳臻宇新能源动力科技有限公司 油气分离器
JP7371518B2 (ja) 2020-02-12 2023-10-31 マツダ株式会社 オイル分離構造

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JPS61190109A (ja) * 1985-02-19 1986-08-23 Yanmar Diesel Engine Co Ltd 転倒可能内燃機関のブレザ−機構
JPH0252912U (fr) * 1988-10-11 1990-04-17
JPH0673307U (ja) * 1993-03-26 1994-10-18 株式会社クボタ 空冷立軸ガソリンエンジンのブリーザ装置
JPH08246831A (ja) * 1995-03-10 1996-09-24 Toyota Motor Corp 二系統潤滑式内燃機関
JPH10274024A (ja) * 1997-03-28 1998-10-13 Kubota Corp エンジンのブリーザ装置
JP2008106627A (ja) * 2006-10-23 2008-05-08 Mazda Motor Corp エンジンの吸気装置
JP2009156226A (ja) * 2007-12-27 2009-07-16 Toyota Motor Corp 内燃機関
JP2012158994A (ja) * 2011-01-29 2012-08-23 Mazda Motor Corp 車両用エンジンの前部構造

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Publication number Priority date Publication date Assignee Title
JPS61190109A (ja) * 1985-02-19 1986-08-23 Yanmar Diesel Engine Co Ltd 転倒可能内燃機関のブレザ−機構
JPH0252912U (fr) * 1988-10-11 1990-04-17
JPH0673307U (ja) * 1993-03-26 1994-10-18 株式会社クボタ 空冷立軸ガソリンエンジンのブリーザ装置
JPH08246831A (ja) * 1995-03-10 1996-09-24 Toyota Motor Corp 二系統潤滑式内燃機関
JPH10274024A (ja) * 1997-03-28 1998-10-13 Kubota Corp エンジンのブリーザ装置
JP2008106627A (ja) * 2006-10-23 2008-05-08 Mazda Motor Corp エンジンの吸気装置
JP2009156226A (ja) * 2007-12-27 2009-07-16 Toyota Motor Corp 内燃機関
JP2012158994A (ja) * 2011-01-29 2012-08-23 Mazda Motor Corp 車両用エンジンの前部構造

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110295969A (zh) * 2018-03-23 2019-10-01 丰田自动车株式会社 内燃机及其制造方法
CN110295969B (zh) * 2018-03-23 2021-11-05 丰田自动车株式会社 内燃机及其制造方法
US10823019B2 (en) * 2018-07-31 2020-11-03 Ford Global Technologies, Llc Ducted positive crankcase ventilation plenum
JP7371518B2 (ja) 2020-02-12 2023-10-31 マツダ株式会社 オイル分離構造
CN114251156A (zh) * 2020-09-21 2022-03-29 深圳臻宇新能源动力科技有限公司 油气分离器

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