JP2018141437A - Evaporated fuel processing device of engine, and engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply sufficient purge air to an intake passage in a wide load region even in an engine loading a supercharger.SOLUTION: A venturi portion 14 is disposed at an inner side near a throttle valve 12 of a duct portion 8a of an air duct member 8, and a purge control valve 26, a collector 4a and the venturi portion 14 are connected by first and second supply pipe members 30, 32. Further a part between the venturi portion 14 of the duct portion 8a and the turbo charger 50, and a first pipe 34a opened to atmospheric air at one end and connected to a canister 22 at the other end are connected by a second pipe 34b. Thus a pressure in an evaporated fuel processing device 20 in supercharging operation can be equalized to pressures of the duct portion 8a pressurized by the turbo charger 50 and the collector 4a, and the evaporated fuel can be supplied to the duct portion 8a through the venturi portion 14 by effectively activating a negative pressure generated by throttling effect by the venturi portion 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an engine evaporative fuel processing apparatus configured to supply an evaporative fuel generated in a fuel tank together with air to an intake system including a throttle valve of an engine equipped with a supercharger to perform combustion processing, and the engine This invention relates to an engine configured to supply evaporated fuel to an intake manifold by the evaporated fuel processing apparatus.

  Japanese Patent Laid-Open No. 7-238872 (Patent Document 1) discloses that a purge passage having one end connected to a canister and the other end connected to a downstream side of a throttle valve is branched, and the branched branch purge passage is connected to an intake passage. An engine evaporative fuel processing apparatus connected to a venturi section provided upstream of the throttle valve is described.

  The evaporative fuel treatment device for an engine described in the above-mentioned publication is an evaporative fuel containing air in a low load region of the engine where the intake negative pressure of the engine generated when a mixture of fuel and air is sucked into the combustion chamber. Is supplied to the downstream side of the throttle valve, and in a high load region where the negative suction pressure of the engine is small, the evaporated fuel containing air is supplied to the upstream side of the throttle valve via the venturi section. The vaporized fuel can be supplied to the intake passage in a wide load region regardless of the size of the intake air.

Japanese Patent Laid-Open No. 7-238872

  By the way, in recent years, downsizing of engines has been promoted as a technology capable of improving environmental performance and fuel efficiency while ensuring power performance. Specifically, the engine performance is reduced while the turbocharger is installed while reducing the engine displacement to achieve both power performance, environmental performance and fuel efficiency. In such an engine, in the load region where the supercharger operates, the supercharging pressure from the supercharger is applied to the intake passage, so that the intake passage has a positive pressure. For this reason, in the evaporated fuel processing apparatus for an engine described in the above-mentioned publication, the pressure in the intake passage may be higher than the pressure (atmospheric pressure) in the purge passage, and the upstream side of the throttle valve via the venturi section. It may be difficult to supply the evaporated fuel.

  The present invention has been made in view of the above, and an object of the present invention is to provide a technique capable of supplying a sufficient amount of evaporated fuel to an intake system in a wide load region even in an engine equipped with a supercharger. And

  The engine evaporative fuel processing apparatus and engine of the present invention employ the following means in order to achieve the above object.

  According to a preferred embodiment of the evaporated fuel processing apparatus for an engine according to the present invention, the evaporated fuel generated in the fuel tank is supplied to an intake system including a throttle valve of an engine equipped with a supercharger for combustion processing. Has been. The engine evaporative fuel processing apparatus includes a canister that can temporarily adsorb evaporative fuel, an evaporative fuel introduction passage that connects the canister and a fuel tank to introduce evaporative fuel into the canister, and the canister to the intake system. A supply amount adjustment valve member for adjusting the supply amount of the evaporated fuel, a connection passage connecting the canister and the supply amount adjustment valve member, and an upstream side of the throttle valve in a flow direction of the air flowing through the intake system of the intake system And a first supply passage for connecting a supply amount adjusting valve member to a portion downstream of the throttle valve in the direction of air flow in the intake system. And a second supply passage connecting the venturi section and the supply amount regulating valve member, and a supercharger upstream of the venturi section in the air flow direction of the intake system An air introduction passage configured to connect a portion downstream from the canister and configured to be able to introduce air from the intake system to the canister, and an evaporative fuel from the fuel tank to the canister disposed in the evaporative fuel introduction passage A first check valve member that allows inflow but restricts outflow of evaporated fuel from the canister to the fuel tank.

  Here, the intake system in the present invention means a member that constitutes a path for supplying air to the combustion chamber, and is typically configured to be able to take in air from the outside, and an intake passage through which the taken-in air flows. This corresponds to a member and an intake manifold connected to the cylinder head and the intake passage member and configured to supply air to the combustion chamber. The turbocharger in the present invention corresponds to a turbocharger or a supercharger.

  According to the present invention, the pressure in the fuel vapor processing apparatus, specifically, the fuel vapor introduction passage, the connection passage, the canister, the supply amount adjusting valve member, the first supply passage and the second supply passage, air introduction Since the pressure in the so-called purge passage constituted by the passage can be maintained at almost the same magnitude as the pressure in the intake system immediately downstream of the supercharger, the supercharger operates and the pressure in the intake system is positive. Even in this case, the venturi portion arranged upstream of the throttle valve functions well, and it is possible to supply evaporated fuel to the intake system upstream of the throttle valve. Thereby, even in an engine equipped with a supercharger, a sufficient amount of evaporated fuel can be supplied to the intake system in a wide load region. Since the pressure in the purge passage is always maintained to be equal to or higher than the pressure in the intake system, evaporated fuel from the intake system to the purge passage, specifically, from the intake system to the first and second supply passages. It is possible to satisfactorily suppress the backflow of air containing air.

  According to the further form of the evaporated fuel processing apparatus for an engine according to the present invention, the air introduction passage has an additional passage capable of introducing air into the canister from the outside. A second check valve member is provided in the additional passage that allows air to flow into the additional passage from the outside but restricts the outflow of air from the additional passage to the outside.

  According to this embodiment, air is supplied to the canister via the intake system, and air is supplied to the canister from the outside via the additional passage, so that the evaporated fuel adsorbed on the canister can be purged stably. can do. In addition, since it is the structure which has a 2nd non-return valve member, even if it is a case where the compressed air just downstream of the supercharger by the operation of the supercharger flows into the air introduction passage, the compressed air is added It can be reliably prevented from flowing out through the passage (backflowing).

  According to the further aspect of the evaporated fuel processing apparatus for an engine according to the present invention, the flow of the evaporated fuel from the supply amount adjusting valve member disposed in the first supply passage to the intake system through the first supply passage is allowed. The third check valve member that regulates the outflow from the intake system to the first supply passage and the inflow of evaporated fuel from the supply amount adjustment valve member that is disposed in the second supply passage to the intake system through the second supply passage A fourth check valve member that permits but restricts outflow from the intake system to the second supply passage.

  According to this embodiment, the third and fourth check valve members cause the air containing the evaporated fuel to flow back from the intake system into the purge passage, specifically, from the intake system into the first and second supply passages. Can be surely prevented.

  According to a preferred embodiment of the engine of the present invention, a cylinder head that constitutes a combustion chamber, an intake passage member that is configured to be able to take in air from the outside, and that is configured as a passage member through which the taken-in air flows, a cylinder head, An intake manifold connected to the intake passage member and configured to supply air to the combustion chamber; a throttle valve for adjusting the amount of air flowing from the intake passage member into the intake manifold; A supercharger disposed upstream of the throttle valve in the flow direction of the air flowing through the passage member, and the evaporated fuel in the intake manifold by the evaporated fuel processing apparatus for an engine according to the present invention of any of the above-described aspects Is configured to be supplied. The intake manifold is configured to be connected to the first supply passage of the evaporated fuel processing apparatus. Further, the intake passage member is provided with a venturi portion of the evaporated fuel processing device at a position upstream of the throttle valve and downstream of the supercharger in the flow direction of the air flowing through the intake passage member. Is connected to the second supply passage of the evaporative fuel processing apparatus, and air is introduced into the evaporative fuel processing apparatus at a portion upstream of the venturi portion and downstream of the supercharger in the flow direction of the air flowing through the intake passage member. It is comprised so that a channel | path may be connected.

  According to the present invention, the evaporative fuel is supplied to the intake manifold by the evaporative fuel processing apparatus for an engine according to the present invention according to any one of the aspects described above. Even if the turbocharger is activated and the pressure in the intake system becomes positive, the venturi portion arranged upstream of the throttle valve functions well, Evaporative fuel can be supplied to the intake system upstream of the throttle valve, and an engine equipped with a supercharger has an effect of supplying a sufficient amount of evaporated fuel to the intake system in a wide load range. be able to. Thereby, an engine with improved environmental performance can be realized.

  According to the present invention, even in an engine equipped with a supercharger, sufficient purge air can be supplied to the intake passage in a wide load region.

1 is a schematic configuration diagram showing an outline of a configuration of a purge system 90 in which an evaporated fuel processing apparatus 20 according to an embodiment of the present invention is connected to an engine 1. FIG. It is explanatory drawing which shows the relationship between the engine speed Ne, the engine torque Te, and the pressure state in the collector 4a and the duct part 8a in the engine 1 carrying the turbocharger 50. FIG. FIG. 6 is a schematic configuration diagram showing an outline of a configuration of a purge system 190 in which a fuel vapor processing apparatus 120 according to a modification is connected to an engine 1.

  Next, the best mode for carrying out the present invention will be described using examples.

  As shown in FIG. 1, a purge system 90 is configured by connecting an evaporated fuel processing apparatus 20 according to an embodiment of the present invention to an engine 1. The engine 1 is connected to the cylinder head 2 constituting the combustion chamber CC, the intake manifold 4 and the exhaust manifold 6 connected to the cylinder head 2, the air duct member 8 connected to the intake manifold 4, and the exhaust manifold 6. The exhaust pipe member 10 and the turbocharger 50 disposed across the air duct member 8 and the exhaust pipe member 10 are provided.

  The intake manifold 4 is configured as a member that supplies air to the combustion chamber CC, and includes a collector 4a and a branch pipe 4b as shown in FIG. A throttle valve 12 is connected to the collector 4a, and an air duct member 8 is connected through the throttle valve 12. The collector 4a is formed with a connection boss 40 to which a first supply pipe member 30 described later is connected. The intake manifold 4 and the throttle valve 12 are an example of an implementation configuration corresponding to the “intake system” in the present invention.

  The exhaust manifold 6 is configured as a member for discharging exhaust gas from the combustion chamber CC.

  As shown in FIG. 1, the air duct member 8 includes a duct portion 8a and an air cleaner 8b. A venturi portion 14 is provided inside the duct portion 8a in the vicinity of the throttle valve 12. A turbocharger 50 is disposed in a portion between the air cleaner 8b and the venturi portion 14 in the duct portion 8a. The duct portion 8a is formed with a connection boss 80a to which a later-described second supply pipe member 32 is connected and a connection boss 80b to which a later-described second pipe 34b is connected. Here, the venturi portion 14 provided inside the duct portion 8a in the vicinity of the throttle valve 12 is a “supercharger upstream of the throttle valve in the flow direction of the air flowing through the intake system in the intake system and the supercharger. It is an example of the implementation structure corresponding to "the venturi part provided in the downstream part rather than." The air duct member 8 is an example of an implementation configuration corresponding to the “intake system” and the “intake passage member” in the present invention.

  As shown in FIG. 1, the evaporated fuel processing apparatus 20 according to the embodiment of the present invention mainly supplies evaporated fuel from the fuel tank 60 into the collector 4 a of the intake manifold 4 or the duct portion 8 a of the air duct member 8. A canister 22 configured to supply vaporized fuel, a connection pipe member 24 connecting the canister 22 and the fuel tank 60, and the canister 22 to the collector 4a or A purge control valve 26 for adjusting the supply amount of the evaporated fuel into the duct portion 8a, a connection pipe member 28 for connecting the canister 22 and the purge control valve 26, a first for connecting the collector 4a and the purge control valve 26 The supply pipe member 30 is connected to the duct portion 8a via the venturi portion 14. Second supply pipe member 32, air introduction pipe member 34 connected to canister 22 so that air can be introduced, connection pipe member 24, first supply pipe member 30, second supply pipe member 32 and air Check valves 24a, 30a, 32a, and 340 provided on the introduction pipe members 34, respectively.

  The connection pipe member 24 corresponds to the “evaporated fuel introduction passage” in the present invention, the purge control valve 26 corresponds to the “supply amount adjustment valve member” in the present invention, and the connection pipe member 28 corresponds to the “connection” in the present invention. The first supply pipe member 30 corresponds to the “first supply passage” in the present invention, and the second supply pipe member 32 corresponds to the “second supply passage” in the present invention. It is an example. The air introduction pipe member 34, the first pipe 34a and the second pipe 34b correspond to the “air introduction passage” in the present invention, and the first pipe 34a has an implementation configuration corresponding to the “additional passage” in the present invention. It is an example. Further, the check valves 24a, 340, 30a, and 32a are respectively “first check valve member”, “second check valve member”, “third check valve member”, and “fourth check valve” in the present invention. It is an example of the implementation structure corresponding to a "valve member."

  The purge control valve 26 is configured as a device for adjusting the amount of evaporated fuel supplied from the canister 22 to the first and second supply pipe members 30 and 32, and is opened and closed by a control unit 70 as shown in FIG. It is controlled.

  As shown in FIG. 1, the first and second supply pipe members 30 and 32 are configured by branching one pipe member halfway, and are connected via a 3WAY connector 92. A check valve 30a is disposed between the collector 4a and the 3WAY connector 92 in the first supply pipe member 30, and the flow of evaporated fuel from the first supply pipe member 30 into the collector 4a is allowed, but the collector The fuel vapor is prevented from flowing out into the first supply pipe member 30 from within 4a.

  Further, a check valve 32a is disposed between the duct portion 8a and the 3WAY connector 92 in the second supply pipe member 32, and the second supply pipe member 32 enters the duct portion 8a via the venturi portion 14. Although the inflow of the evaporated fuel is allowed, the outflow of the evaporated fuel from the inside of the duct portion 8a via the venturi portion 14 to the second supply pipe member 32 is prevented.

  As shown in FIG. 1, the air introduction pipe member 34 includes a first pipe 34a having one end connected to the canister 22 and the other end opened to the atmosphere, and one end connected to the duct portion 8a and the other end connected to the duct portion 8a. And a second pipe 34b connected to the first pipe 34a via a 3WAY connector 94.

  A check valve 340 is arranged at a position upstream of the 3WAY connector 94 in the flow direction of the air flowing through the first pipe 34a toward the canister 22 in the first pipe 34a, and the first pipe 34a is connected to the first from the outside (atmosphere). The inflow of air into the pipe 34a is allowed, but the outflow of air from the first pipe 34a to the outside (atmosphere) is prevented.

  As shown in FIG. 1, one end of the second pipe 34b is between the venturi part 14 of the duct part 8a and the turbocharger 50, more specifically, the flow of air flowing through the duct part 8a of the duct part 8a. In the direction, it is connected to a position above the venturi portion 14 and downstream from the turbocharger 50.

  Next, the operation of the purge system 90 configured as described above, particularly, the state when the evaporated fuel from the fuel tank 60 is supplied into the collector 4a or the duct portion 8a as the engine 1 is operated will be described.

  First, evaporation when the engine 1 is operated (hereinafter referred to as “non-supercharging operation”) in a relatively low load region where the turbocharger 50 is not supercharged (region below the straight line in FIG. 2). In the non-supercharging operation, the throttle valve 12 has a relatively small opening, so that air flows into the combustion chamber CC in the intake process and flows into the collector 4a on the downstream side of the throttle valve 12. The pressure (intake pressure) is lower than the atmospheric pressure (negative pressure), and the pressure in the venturi portion 14 is also lower than the atmospheric pressure (negative pressure) due to the air flowing in the air duct member 8.

  Here, as shown in FIG. 1, the other end of the first pipe 34a of the air introduction pipe member 34 is open to the atmosphere, and one end of the second pipe 34b of the air introduction pipe member 34 is included in the duct portion 8a. Since it is connected directly downstream of the turbocharger 50, inside the evaporated fuel processing device 20, specifically, from the first and second pipes 34 a and 34 b to the canister 22, the connecting pipe member 28, and the purge control valve 26. The internal pressure up to the first and second supply pipe members 30 and 32 is substantially the same as the atmospheric pressure.

  In this way, the evaporated fuel adsorbed to the canister 22 due to the pressure difference between the pressure in the collector 4a and the venturi section 14 and the pressure in the evaporated fuel processing apparatus 20 causes the first and second pipes 34a, 34b to be absorbed. Flows into the collector 4a and the duct portion 8a through the purge control valve 26 together with fresh air (air) supplied from the air. The evaporated fuel that has flowed into the collector 4a and the duct portion 8a is introduced into the combustion chamber CC and then burned in the engine 1.

  Next, the evaporated fuel when the engine 1 is operated (hereinafter referred to as “supercharging operation”) in a relatively high load region (a region above the straight line in FIG. 2) in which supercharging by the turbocharger 50 is performed. In the supercharging operation, the opening degree of the throttle valve 12 is relatively large, and the air flowing through the air duct member 8 is compressed by the turbocharger 50, and the compressed air passes through the throttle valve 12. Therefore, the pressure in the collector 4a (intake pressure) becomes higher than the atmospheric pressure (positive pressure).

  Here, as shown in FIG. 1, since one end of the second pipe 34b of the air introduction pipe member 34 is connected to the downstream of the turbocharger 50 in the duct portion 8a, the air compressed by the turbocharger 50 is connected. Flows into the evaporated fuel processing apparatus 20 through the second pipe 34b, specifically, from the canister 22 to the connection pipe member 28, the purge control valve 26, and the first and second supply pipe members 30 and 32. As a result, the internal pressure from the first and second pipes 34a and 34b to the first and second supply pipe members 30 and 32 through the canister 22, the connection pipe member 28, and the purge control valve 26 is substantially equal to the pressure in the collector 4a. Same pressure (positive pressure).

  On the other hand, the venturi portion 14 is at a lower pressure (negative pressure) than the pressure in the other portions of the duct portion 8a and the collector 4a due to the throttling effect. Therefore, the evaporated fuel adsorbed by the canister 22 is brought together with the fresh air (compressed air) supplied from the second pipe 34b due to the pressure difference between the pressure in the venturi section 14 and the pressure in the evaporated fuel processing device 20. It flows into the duct portion 8a (the venturi portion 14) through the purge control valve 26. Then, the evaporated fuel that has flowed into the duct portion 8a (the venturi portion 14) is introduced into the combustion chamber CC and then burned in the engine 1. Since the pressure in the second pipe 34b is higher than the atmospheric pressure (positive pressure), fresh air (air) does not flow from the first pipe 34a.

  Thus, even when the pressure in the collector 4a or the air duct member 8 is higher than the atmospheric pressure (positive pressure) during the supercharging operation, the throttling effect by the venturi portion 14 functions well. In addition, it is possible to supply the evaporated fuel into the duct portion 8a (the venturi portion 14).

  According to the fuel vapor processing apparatus 20 according to the present embodiment described above, the venturi portion 14 is provided inside the duct portion 8a of the air duct member 8 in the vicinity of the throttle valve 12, and the purge control valve 26, the collector 4a, and the venturi portion are provided. 14 is connected to the first and second supply pipe members 30 and 32, the portion between the venturi portion 14 of the duct portion 8a and the turbocharger 50, one end is opened to the atmosphere, and the other end is connected to the canister 22. Since the first pipe 34a is connected to the first pipe 34a by the second pipe 34b, the evaporated fuel is supplied to the collector 4a and the duct portion 8a by the negative pressure generated in the collector 4a and the venturi portion 14 during the non-supercharging operation. During supercharging operation, the pressure in the evaporative fuel processing device 20 can be turbocharged. By making the pressure (positive pressure) the same as that of the duct portion 8a and the collector 4a through which the air compressed by 50 flows, the negative pressure generated by the throttling effect by the venturi portion 14 is effectively applied, and the evaporated fuel is supplied to the venturi portion 14. Can be supplied to the duct portion 8a. Thereby, even in the engine 1 equipped with the turbocharger 50, a sufficient amount of evaporated fuel can be supplied to the intake system in a wide load region.

  In the present embodiment, the air introduction pipe member 34 is composed of a first pipe 34a and a second pipe 34b, and air (atmosphere) from the outside is supplied to the canister 22 via the first pipe 34a. At the same time, the structure is configured to supply the air immediately downstream of the turbocharger 50 through the second pipe 34b. For example, as shown in the evaporative fuel processing apparatus 120 of the modified example illustrated in FIG. 3, only the air introduction pipe member 134 that connects the portion directly downstream of the turbocharger 50 in the duct portion 8 a and the canister 22 is provided. Also good. The air introduction pipe member 134 is an example of an implementation configuration corresponding to the “air introduction passage” in the present invention.

  In the present embodiment, the turbocharger 50 is provided as a supercharger. However, the present invention can also be applied to a configuration provided with a supercharger as a supercharger, or a configuration provided with both the turbocharger 50 and the supercharger.

  This embodiment shows an example for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the present embodiment.

1 Engine (Engine)
2 Cylinder head (cylinder head)
4 Intake manifold (intake system)
4a Collector 4b Branch pipe 6 Exhaust manifold 8 Air duct member (intake system, intake passage member)
8a Duct section 8b Air cleaner 10 Exhaust pipe member 12 Throttle valve (throttle valve, intake system)
14 Venturi Club (Venturi Club)
20 Evaporated fuel processing device (evaporated fuel processing device)
22 Canister (Canister)
24 Connection pipe member (evaporated fuel introduction passage)
24a Check valve (first check valve member)
26 Purge control valve (Supply control valve member)
28 Connection pipe member (connection passage)
30 First supply pipe member (first supply passage)
30a Check valve (third check valve member)
32 Second supply pipe member (second supply passage)
32a Check valve (fourth check valve member)
34 Air introduction pipe member (air introduction passage)
34a First pipe (air introduction passage, additional passage)
34b Second pipe (air introduction passage)
40 Connecting boss 50 Turbocharger (supercharger)
60 Fuel tank (fuel tank)
70 Control unit 80a Connection boss 80b Connection boss 90 Purge system 92 3WAY connector 94 3WAY connector 120 Evaporated fuel processing device (evaporated fuel processing device)
134 Air introduction pipe member (air introduction passage)
340 Check valve (second check valve member)
CC combustion chamber

Claims (4)

An engine evaporative fuel processing device configured to supply an evaporative fuel generated in a fuel tank to an intake system including a throttle valve of an engine equipped with a supercharger to perform combustion processing,
A canister capable of temporarily adsorbing the evaporated fuel;
An evaporative fuel introduction passage for connecting the canister and the fuel tank to introduce the evaporative fuel into the canister;
A supply amount adjustment valve member for adjusting the supply amount of the evaporated fuel from the canister to the intake system;
A connection passage connecting the canister and the supply amount adjusting valve member;
A venturi portion provided in a portion of the intake system upstream of the throttle valve and downstream of the supercharger in the flow direction of air flowing through the intake system;
A first supply passage connecting a portion of the intake system downstream of the throttle valve in the air flow direction and the supply amount adjusting valve member;
A second supply passage connecting the venturi part and the supply amount adjusting valve member;
A portion of the intake system that is upstream of the venturi portion and downstream of the turbocharger in the air flow direction is connected to the canister, and the air is supplied from the intake system to the canister. An air introduction passage configured to be introduced; and
A first check valve member that is disposed in the evaporative fuel introduction passage and that allows the evaporative fuel to flow from the fuel tank to the canister, but restricts the evaporative fuel from flowing from the canister to the fuel tank;
An engine evaporative fuel processing apparatus. The air introduction passage has an additional passage capable of introducing the air into the canister from the outside,
The second check valve member that allows the inflow of the air from the outside to the additional passage but restricts the outflow of the air from the additional passage to the outside is provided in the additional passage. Evaporative fuel treatment equipment for engines. The evaporative fuel is allowed to flow into the intake system from the supply amount adjusting valve member via the first supply passage, but is allowed to flow out of the intake system into the first supply passage. A third check valve member for regulating;
The evaporative fuel is allowed to flow into the intake system from the supply amount adjusting valve member via the second supply passage, but is allowed to flow out of the intake system into the second supply passage. A fourth check valve member for regulating;
The evaporative fuel processing apparatus of the engine of Claim 1 or 2 further provided. A cylinder head constituting a combustion chamber;
An intake passage member configured to be able to take in air from the outside, and configured as a passage member through which the taken-in air flows;
An intake manifold connected to the cylinder head and the intake passage member and configured to supply the air to the combustion chamber;
A throttle valve that adjusts the amount of air flowing into the intake manifold from the intake passage member;
A turbocharger disposed upstream of the throttle valve in the flow direction of the air flowing through the intake passage member of the intake passage member;
With
An engine configured to supply evaporative fuel to the intake manifold by the evaporative fuel processing device for an engine according to any one of claims 1 to 3,
The intake manifold is configured to be connected to a first supply passage of the evaporated fuel processing device,
The intake passage member is provided with a venturi portion of the evaporated fuel processing device at a position upstream of the throttle valve and downstream of the supercharger in the flow direction of the air flowing through the intake passage member. A second supply passage of the evaporated fuel processing apparatus is connected to the venturi section, and a portion upstream of the venturi section and downstream of the supercharger in the flow direction of the air flowing through the intake passage member An engine configured to be connected to an air introduction passage of the fuel vapor processing apparatus.

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