Fluid discharge device and internal combustion engine comprising the same

Abstract

To provide a fluid discharge device capable of easily confirming the internal operation of the device without the trouble of disassembly work or the like.SOLUTION: A fluid discharge device 21 comprises: a housing 26; a guide path 27 connected to a fluid system 22 and capable of guiding fluid flowing through the fluid system 22 into the inside of the housing 26; and a switching unit 28 capable of switching an opening 27a of the guide path 27 between a closed state and an open state according to a pressure received from the fluid, where an operating unit 35 of the switching unit 28 that performs the switching operation is provided with penetration parts 29a, 29b that penetrate the housing 26.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fluid ejection device and to an internal combustion engine equipped with such a device. [Background technology]

[0002] For example, an internal combustion engine such as a diesel engine is provided with an intake passage for supplying outside air taken in through an intake port to the combustion chamber of each cylinder. A turbocharger compressor is provided downstream of the intake port of this intake passage, and an intercooler is provided downstream of the compressor. The turbocharger turbine, which is coaxially connected to the compressor, rotates in response to the flow of exhaust gas to operate the compressor. As a result, the taken-in air is compressed, and the compressed air is cooled by the intercooler before being supplied to the combustion chamber (see, for example, Patent Document 1).

[0003] Furthermore, when condensed water accumulates in the intake passage of an internal combustion engine, a drain device (sometimes called a drain box or drain device) is provided to discharge the accumulated condensed water out of the intake passage. For example, Patent Document 2 proposes a condensed water drain device that includes a drain pipe that opens into the lower part of an intake manifold that constitutes the intake passage, a case that houses the lower end opening of the drain pipe, a flap valve that is disposed in the case and closes or opens the lower end opening of the drain pipe, and a coil spring that biases the flap valve to a closed state. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-234733 A [Patent Document 2] JP 2013-221441 A Summary of the Invention [Problem to be solved by the invention]

[0005] In this type of discharge device, in order to ensure safety, it is necessary to periodically check whether the discharge device is operating properly. Also, it is necessary to periodically check whether foreign matter contained in condensed water or the like adheres to moving parts such as a flap valve and interferes with the operation of the discharge device. However, due to the structure of the discharge device, it is not possible to check the moving parts such as the flap valve from the outside, so that in the current situation, it is necessary to disassemble the discharge device each time to check the operation of the discharge device or the adhesion of foreign matter.

[0006] The above-mentioned problems are not limited to exhaust devices connected to the intake passage of an internal combustion engine, but may occur in any device for exhausting a fluid as required.

[0007] In view of the above circumstances, the technical problem to be solved in this specification is to provide a fluid discharge device that allows easy operation check of the inside of the device without the trouble of disassembly or the like. [Means for solving the problem]

[0008] The above-mentioned problems are solved by a fluid discharge device according to the present invention. That is, this fluid discharge device includes a housing, a guide path that is connected to a fluid system and can guide a fluid flowing through the fluid system into the housing, and a switching unit that can switch an opening of the guide path between a closed state and an open state depending on the pressure received from the fluid, and is characterized in that an operating unit that performs the switching operation of the switching unit is provided with a penetrating portion that penetrates the housing.

[0009] In this way, in the fluid discharge device according to the present invention, a through-hole penetrating the housing is provided in the operating part of the switching part that performs the switching operation, which is capable of switching the opening of the guide path between a closed state and an open state. With this configuration, the part of the through-hole that penetrates the housing can be seen from outside the housing. Here, since the through-hole is provided in the operating part of the switching part, the part of the through-hole that can be seen from outside also performs a predetermined operation in accordance with the switching operation of the switching part. Therefore, it is possible to easily visually check whether the opening of the guide path is in an open state or a closed state, in other words, whether the switching part is operating normally or not.

[0010] In the fluid discharge device according to the present invention, the through portion may pass through the housing in a direction parallel to the operating direction of the operating portion.

[0011] Due to the structure of the fluid discharge device (particularly the switching unit), the amount of movement involved in the switching operation of the operating unit is small, so the position of the through-hole does not change much when the opening of the guide path is blocked or opened. Therefore, it may be difficult to visually determine whether it is in a blocked or open state. In contrast, if the through-hole is configured to penetrate the housing in a direction parallel to the operating direction of the operating unit, the through-hole can be moved as much as possible, so that it becomes easy to determine whether it is in a blocked or open state just by looking at the part of the through-hole that penetrates the housing.

[0012] In the fluid discharge device according to the present invention, the through-hole may be pin-shaped. In this case, the housing may be provided with a fitting hole into which the through-hole can be fitted.

[0013] When the through-hole is pin-shaped in this way, by providing a fitting hole in the housing into which the through-hole can be fitted, the movement of the through-hole accompanying the switching operation of the operating unit can be guided by the fitting hole. This eliminates the need to provide a separate mechanism for guiding the pin-shaped through-hole, making it possible to simplify the fluid discharge device and reduce costs.

[0014] In addition, in the fluid discharge device according to the present invention, the switching portion may have an operating portion and a biasing portion that biases the operating portion toward a position in a blocked state, and the penetrating portion may penetrate the housing in the same direction as the biasing direction of the operating portion by the biasing portion.

[0015] In this type of fluid discharge device, foreign matter may be mixed in the fluid to be discharged, and the mixed foreign matter may adhere to the contact portion between the operating part of the switching part and the opening of the guide path, causing the operating part to become stuck to the opening. In such a case, even if a pressure of a magnitude that would normally allow the operating part to be displaced to a position in the open state against the biasing force acts, it may be assumed that the operating part cannot be displaced. Here, in the case where the penetrating part penetrates the housing in the same direction as the biasing direction of the operating part by the biasing part as described above, the part of the penetrating part that protrudes outside the housing can be pushed toward the housing to move the operating part from the position in the closed state to the position in the open state against the biasing force. Therefore, even in a situation where the operating part cannot be displaced for the above-mentioned reasons, it is possible to easily return the switching part to a normal operating state with a simple operation.

[0016] In the fluid discharge device according to the present invention, the fluid system may be configured as an intake passage of an internal combustion engine. In this case, one end of the guide passage may open to a lower portion of the intake passage, and the other end of the guide passage may open downward inside the housing.

[0017] In the intake passage of an internal combustion engine, condensed water may be generated from the intake gas during the intake process leading to the combustion chamber. Therefore, by opening one end of the guide passage to the lower part of the intake passage, the condensed water generated in the intake passage can be collected efficiently without leakage. In addition, by making the other end of the guide passage open toward the bottom inside the housing, it is possible to prevent the collected condensed water from remaining in the guide passage and to reliably discharge the condensed water without leakage.

[0018] In this case, the through-hole may pass through the housing in an upward direction.

[0019] The condensed water guided into the housing through the guide passage flows down to the bottom of the housing when the opening of the guide passage is opened. Therefore, if the penetration portion penetrates the bottom of the housing downward, there is a risk that the condensed water will come into contact with the penetration portion, which may cause corrosion of the penetration portion. In contrast, by configuring the penetration portion to penetrate the housing upward as described above, the penetration portion penetrates the upper part of the housing. Therefore, even if the condensed water is released into the housing through the opening of the guide passage, it is possible to avoid the condensed water coming into contact with the penetration portion, and it is possible to prevent problems that may occur due to contact with the condensed water.

[0020] In this case, the fluid discharge device of the present invention can be suitably provided as an internal combustion engine comprising the fluid discharge device, a combustion chamber to which an intake passage is connected, and a cylinder block constituting at least a part of the combustion chamber, with the fluid discharge device attached to the side wall portion of the cylinder block.

[0021] In a combustion engine, the combustion chamber is usually disposed in the upper part of the cylinder block. On the other hand, since the combustion chambers are disposed at a plurality of positions in the front-rear direction of the cylinder block, the intake passage extends in the front-rear direction of the cylinder block and is often disposed on the side of these combustion chambers. Therefore, if the fluid discharge device is attached to the side wall of the cylinder block, the fluid discharge device can be disposed at a lower position of the intake passage, so that the lower part of the intake passage and the upper part of the fluid discharge device can be easily connected by a guide path. In addition, if the fluid discharge device is attached to the side wall of the cylinder block, the fluid discharge device can be attached later, which is preferable in terms of versatility. In addition, if it is attached to the side wall of the cylinder block, it is easy to secure a space for attaching an exhaust pipe such as a hose to the lower part of the fluid discharge device. Effect of the Invention

[0022] As described above, according to the present invention, it is possible to provide a fluid discharge device that allows easy operation check of the inside of the device without the trouble of disassembly work, etc., and an internal combustion engine equipped with this device. [Brief description of the drawings]

[0023] [Figure 1] 1 is a cross-sectional view of an internal combustion engine according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view of the fluid discharge device shown in FIG. 1, illustrating a state in which an opening of a guide portion is closed. FIG. [Diagram 3] 2 is a cross-sectional view of the fluid discharge device shown in FIG. 1, showing a state in which an opening of a guide portion is opened. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, the details of a fluid discharge device according to an embodiment of the present invention and an internal combustion engine equipped with the device will be described with reference to the drawings. Note that in this embodiment, the internal combustion engine will be described by taking, as an example, a diesel engine used to supply torque to a generator motor of a ship or to rotate a propeller shaft of a ship.

[0025] Fig. 1 shows a cross-sectional view of an internal combustion engine 10 according to an embodiment of the present invention. As shown in Fig. 1, the internal combustion engine 10 is for generating power through combustion, and mainly includes a plurality of cylinders 11 arranged in series, a cylinder head 12 arranged on the upper part of the cylinders 11, pistons 13 supported so as to be capable of reciprocating along the cylinders 11, injectors 15 for spraying fuel into the combustion chambers 14 of the cylinders 11, a crankshaft 16 connected to an output shaft (not shown), connecting rods 17 for converting the reciprocating motion of the pistons 13 into the rotational motion of the crankshaft 16, an intake passage 18 and a supercharger 19 for supplying compressed air to the combustion chambers 14, an intercooler (not shown) for cooling the air compressed by the compressor of the supercharger 19, a fuel pump 20 for supplying fuel to the injectors 15, and a fluid discharge device 21.

[0026] The intake passage 18 has an intake manifold 22 connected to the intercooler on its downstream side, and an intake duct 23 connected to the intake manifold 22 and opening into the combustion chamber 14 of each cylinder 11. This allows air compressed by the turbocharger 19 and cooled by the intercooler to be supplied to each combustion chamber 14 through the intake duct 23 branched from the intake manifold 22 toward the combustion chamber 14 of each cylinder 11.

[0027] In this embodiment, of the above-mentioned components, the cylinder 11, the cylinder head 12, the intake manifold 22, and the intake duct 23 are integrally formed with a cylinder block 24 which is the main body of the internal combustion engine 10.

[0028] The intake manifold 22 is disposed at the same height as the intercooler or below the intercooler. The upstream end of the intake duct 23 opens to the upper part of the intake manifold 22. Therefore, in the process of cooling the air compressed by the intercooler, it is conceivable that the water vapor in the air condenses into liquid (condensed water) and accumulates at the bottom of the intake manifold 22. This type of liquid can cause water stains and rust at the bottom of the intake manifold 22. Alternatively, it can react with sulfur oxide contained in the gas blown back from the intake valve 25 to produce sulfuric acid, which can cause corrosion of the cylinder block 24.

[0029] 2, the fluid discharge device 21 has a housing 26, a guide path 27 connected to the intake manifold 22 and capable of guiding the fluid (here, air, or air and condensed water) in the intake manifold 22 into the inside of the housing 26, a switching unit 28 capable of switching an opening 27a of the guide path 27 between a closed state and an open state depending on the pressure received from the fluid, and through-holes 29a, 29b that penetrate the housing 26. Each element will be described in detail below.

[0030] The housing 26 has, for example, a cylindrical tubular portion 30, an upper lid portion 31 closing an upper end opening of the tubular portion 30, and a lower lid portion 32 closing a lower end opening of the tubular portion 30. In this embodiment, the tubular portion 30 and the lower lid portion 32 are integrally formed, and the tubular portion 30 and the upper lid portion 31 are fastened to each other by a flange portion 30a provided on the outer periphery of the upper end of the tubular portion 30 and the upper lid portion 31 using a bolt 33 or the like.

[0031] The guide passage 27 is composed of, for example, a guide pipe 34 (see FIG. 1) connected to the bottom 22a of the intake manifold 22, and a through hole 31a (see FIG. 2) that is continuous with the lower end of the guide pipe 34 and penetrates the upper cover 31 in the thickness direction. In this embodiment, the guide pipe 34 is made of a flexible material such as a hose, and a cylindrical protrusion 31b is provided on the upper surface of the upper cover 31. The guide pipe 34 is fitted to the outer periphery of the protrusion 31b to connect the guide pipe 34 to the through hole 31a. In this case, the opening 27a of the guide passage 27 arranged inside the housing 26 is composed of the through hole 31a and faces downward. In this embodiment, the communication port 22a1 that connects the guide pipe 34 and the internal space of the intake manifold 22 penetrates the bottom 22a of the intake manifold 22 in the horizontal direction (see FIG. 1), but may also penetrate the bottom 22a in the vertical direction.

[0032] The switching unit 28 is capable of switching between a closed state and an open state of the opening 27a described above, and in this embodiment has an operating unit 35 that performs the switching operation, and a biasing unit 36 ​​that biases the operating unit 35 toward a position in the closed state (see Figure 2).

[0033] Of these, the operating part 35 has, for example, a rectangular plate shape and is capable of closing the opening 27a by abutting against the lower surface of the top cover part 31. In this embodiment, the operating part 35 has a buffer body 37 at a portion facing the top cover part 31. This buffer body 37 is made of a soft material such as rubber and is capable of absorbing impact when it abuts against the top cover part 31. This buffer body 37 is clamped and fixed to the operating part 35 by, for example, fastening a bolt 38 and a double nut 38a. This allows the buffer body 37 to move integrally with the operating part 35.

[0034] In this embodiment, the urging portion 36 is disposed on the opposite side of the opening 27a of the guide path 27 with the operating portion 35 therebetween. In this case, the operating portion 35 is disposed at a position directly facing the opening 27a, and the urging portion 36 is disposed in a direction such that the urging direction is upward, that is, in a direction that urges the operating portion 35 toward the opening 27a.

[0035] In this embodiment, the switching portion 28 further includes a receiving portion 39 that abuts against the lower end (the end opposite to the operating portion 35) of the urging portion 36 and is movable along the urging direction, a biasing force adjustment portion 40 that can adjust the magnitude of the biasing force by the urging portion 36 by adjusting the height position of the receiving portion 39, and a guide portion 41 that guides the movement of the receiving portion 39 in the biasing direction. The biasing force adjustment portion 40 has, for example, a threaded portion that is screwed into the lower cover portion 32, and an upper end of the threaded portion is fitted into a fitting hole 39a of the receiving portion 39. On the other hand, it is preferable that the fitting between the receiving portion 39 and the threaded portion is a clearance fit so that the receiving portion 39 rotates freely relative to the axial rotation of the threaded portion.

[0036] The through-holes 29a and 29b are, for example, pin-shaped and attached to the operating part 35. In this embodiment, of the two pin-shaped through-holes 29a and 29b, one of the through-holes 29a is fitted (press-fitted) into a hole provided in the operating part 35, and the other through-hole 29b has a bolt part 29b1 at its tip, and a nut part 29b2 is attached to the bolt part 29b1, and the operating part 25 is fastened by a large diameter part provided at the base end of the bolt part 29b1 and the nut part 29b2, thereby being fixed to the operating part 35. In addition, each of the through-holes 29a and 29b penetrates the housing 26, and at least when the opening 27a is in a closed state, a part (tip part) of each of the through-holes 29a and 29b is visible from the outside.

[0037] In this embodiment, the through-holes 29a and 29b penetrate the housing 26 in the same direction as the biasing direction of the operating unit 35 by the biasing unit 36, that is, in this embodiment, in the upward direction. In this case, the penetration direction of the through-holes 29a and 29b is parallel to the operating direction of the operating unit 35 (i.e., the up-down direction).

[0038] In this embodiment, the two through-holes 29a, 29b having the above-mentioned configuration penetrate the upper cover 31 of the housing 26. Furthermore, the upper cover 31 is provided with a fitting hole 42 into which the through-holes 29a, 29b can be fitted. This makes it possible to guide the movement of the through-holes 29a, 29b in the penetration direction by the inner peripheral surface of the fitting hole 42.

[0039] In this embodiment, a mark 43 is provided on the portion of the through-holes 29a, 29b that penetrates the housing 26. The mark 43 is preferably provided so as to be exposed to the outside of the housing 26 when the opening 27a is in a closed state, and to be located inside the housing 26, for example, on the inside of the fitting hole 42, when the opening 27a is in an open state, as shown in Figures 2 and 3, for example.

[0040] A drain hole 44 is provided in the bottom of the fluid discharge device 21, i.e., the bottom cover 32 of the housing 26, for discharging the fluid (air or condensed water) that flows from the guide path 27 into the housing 26 with the opening 27a open to the outside of the housing 26. In the example shown in Fig. 2 etc., a drain pipe 45 is connected to the drain hole 44, making it possible to discharge the fluid that has flowed into the housing 26 to the outside of the fluid discharge device 21 (see Fig. 1).

[0041] In the fluid discharge device 21 having the above-mentioned configuration, the operating part 35 moves downward against the upward biasing force of the biasing part 36 in response to the pressure of the fluid in the guide path 27, and the opening 27a changes from a closed state to an open state. In addition, with the switching operation of the operating part 35, the through-holes 29a, 29b are displaced in the same direction as the operating part 35, and as a result, the length of the part of the through-holes 29a, 29b exposed to the outside of the housing 26 varies. When the opening 27a changes from a closed state to an open state as described above, the through-holes 29a, 29b move downward together with the operating part 35, and therefore the part of the through-holes 29a, 29b that can be seen from the outside is reduced.

[0042] As described above, in the fluid discharge device 21 according to this embodiment, the operation unit 35 that performs the switching operation of the switching unit 28 that can switch the opening 27a of the guide path 27 between a closed state and an open state is provided with the through-holes 29a and 29b that penetrate the housing 26. With this configuration, the parts of the through-holes 29a and 29b that penetrate the housing 26 can be visually recognized from the outside of the housing 26. Here, since the through-holes 29a and 29b are provided in the operation unit 35 of the switching unit 28, the parts of the through-holes 29a and 29b that can be visually recognized from the outside also perform a predetermined operation in accordance with the switching operation of the switching unit 28. Therefore, it becomes possible to easily visually check whether the opening 27a of the guide path 27 is in an open state or a closed state, in other words, whether the switching unit 28 is operating normally or not.

[0043] Furthermore, as in this embodiment, by providing the mark 43 on the portion of the through-holes 29a, 29b penetrating the housing 26 that is exposed to the outside of the housing 26 when the opening 27a is in a closed state and located inside the housing 26 when the opening 27a is in an open state, it becomes possible to instantly determine whether the opening 27a is in a closed state or an open state based on whether the mark 43 is visible from the outside. Therefore, it becomes possible to easily check the operation of the fluid discharge device 21 (switching unit 28) in a short time.

[0044] Furthermore, in the present embodiment, when the through-holes 29a and 29b penetrate the housing 26 in the same direction as the biasing direction of the operating unit 35 by the biasing unit 36, the parts of the through-holes 29a and 29b that protrude outside the housing 26 can be pushed toward the housing 26 to move the operating unit 35 against the biasing force from the position in the closed state to the position in the open state. Therefore, as described above, even if the operating unit 35 is fixed to the opening 27a by foreign matter mixed in the fluid to be discharged, the operating unit 35 can be reliably separated from the opening 27a by a simple operation, and the switching unit 28 can be easily returned to the normal operating state.

[0045] Of course, as in this embodiment, by forming at least one of the upper cover part 31 and the lower cover part 32 separately from the cylindrical part 30 and fastening them with the bolts 38, the fluid discharge device 21 can be easily disassembled. Therefore, it is possible to reliably check the operation of the fluid discharge device 21 even in a situation where the operation cannot be checked only by visual inspection from the outside.

[0046] Although one embodiment of the present invention has been described above, the fluid discharge device according to the present invention can have configurations other than those described above without departing from the spirit of the invention.

[0047] For example, in the above embodiment, the penetrating parts 29a, 29n are pin-shaped, but of course, this is not limited thereto. As long as they penetrate the housing 26, the penetrating parts 29a, 29b can have any shape. In addition, in the present embodiment, a fitting hole 42 that fits with the penetrating parts 29a, 29b is provided in a part (upper cover part 31) of the housing 26, and the fitting hole 42 guides the movement of the penetrating parts 29a, 29b in the penetrating direction, but of course, this is not limited thereto. For example, although not shown, a configuration in which the outer surface of a plate-like operating part 35 that moves up and down and the inner peripheral surface of the cylindrical part 30 are slidable with each other may be used, and the operation of the operating part 35 may be guided by the cylindrical part 30.

[0048] In the above embodiment, the case where the penetrating parts 29a, 29b are moved in the same direction as the motion direction of the motion part 35 is exemplified, but of course other motion modes are also possible. For example, although not shown, a motion direction conversion part using a link mechanism such as a pantograph may be provided between the motion part 35 and the upper cover part 31 to convert the vertical motion of the motion part 35 into horizontal motion. In this case, the penetrating parts 29a, 29b may be provided in the output part of the motion direction conversion part so that the penetrating parts 29a, 29b penetrate the cylindrical part 30, so that the penetrating parts 29a, 29b are displaced in the horizontal direction in accordance with the switching motion.

[0049] In the above embodiment, the fluid discharge device 21 according to the present invention is attached to the side wall of the cylinder block 24 as the main body of the internal combustion engine 10, but the present invention is not limited to this. The fluid discharge device 21 may be attached to a location other than the side wall of the cylinder block 24, or may be attached to an element other than the cylinder block 24 among the elements constituting the internal combustion engine 10. Alternatively, the fluid discharge device 21 may be attached to an element other than the internal combustion engine 10 (including the floor, wall, etc. of the location where the internal combustion engine 10 is installed).

[0050] In the above description, the fluid discharge device 21 according to the present invention is applied to the intake passage 18 of the internal combustion engine 10, but the application of the present invention is not limited to this. The present invention may be applied to a fluid system other than the intake passage 18 of the internal combustion engine 10. Alternatively, the present invention may be applied to any fluid system through which a fluid to be discharged as necessary flows, not limited to the internal combustion engine 10. [Explanation of symbols]

[0051] 10 Internal combustion engine 11 Cylinders 12. Cylinder head 13 Piston 14 Combustion chamber 15 Injector 16 Crankshaft 17 Connecting rod 18 Intake passage 19 Turbocharger 20 Fuel Pump 21 Fluid discharge device 22 Intake manifold 22a bottom 23 Intake duct 24 Cylinder block 25 Intake valve 26 Case 27 Guideway 27a opening 28 Switching section 29a,29b Penetration part 30 Cylindrical section 30a Tsubabe 31 Top cover 31a Through hole 32 Lower lid part 33 Volts 34 Guide tube 35 Operating Part 36 Pressurizing part 37 Buffer 38 Volts 39 Receiving part 39a Fitting hole 40 Force adjustment section 41 Guide section 42 Fitting hole 43 Landmark 44 Discharge hole 45 Discharge pipe

Claims

1. A housing and a guide path connected to a fluid system and capable of guiding a fluid flowing through the fluid system into an interior of the housing; a switching unit that can switch an opening of the guide path between a closed state and an open state in response to pressure from the fluid, A fluid discharge device, characterized in that an operating portion of the switching portion that performs the switching operation is provided with a through-portion that penetrates the housing.

2. The fluid ejection device according to claim 1 , wherein the through-hole penetrates the housing in a direction parallel to a direction of movement of the movement portion.

3. The through portion is pin-shaped, The fluid discharge device according to claim 1 or 2, wherein the housing is provided with a fitting hole into which the through-hole can be fitted.

4. The switching unit is The operation unit; a biasing portion that biases the operating portion toward a position in the closed state; having The fluid discharge device according to claim 1 , wherein the through portion penetrates the housing in the same direction as the biasing direction of the operating portion by the biasing portion.

5. the fluid system is formed by an intake passage of an internal combustion engine, 3. The fluid discharge device according to claim 1, wherein one end of the guide path opens to a lower portion of the intake path, and the other end of the guide path opens downward inside the housing.

6. The fluid discharge device according to claim 5 , wherein the through-hole penetrates the housing upward.

7. A fluid discharge device according to claim 5; a combustion chamber to which the intake passage is connected; a cylinder block that constitutes at least a portion of the combustion chamber, The fluid ejection device is attached to a side wall of the cylinder block.

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