JP2013019286A - Engine apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine apparatus on which an exhaust emission control device 31 is installed, without almost expanding the installation width dimension (height, lateral width dimension, and longitudinal width dimension) of an engine 1.SOLUTION: In a structure, the exhaust emission control device 31 is provided on an exhaust path of the engine 1, while an oil pan 11 is arranged on the bottom of the engine 1. A support 72 for connecting the exhaust emission control device 31 is provided on the oil pan 11, and the oil pan 11 supports the exhaust emission control device 31.

Description

  The present invention relates to an engine device mounted on a cargo transportation container or the like. More specifically, the present invention is applied to, for example, a cargo transportation container or an engine mounted on various vehicles, and drives a refrigeration / refrigeration air conditioner, an in-vehicle temperature control device, a power generation device, or the like. The present invention relates to an engine device.

  Conventionally, a diesel particulate filter (oxidation catalyst, honeycomb filter) is provided as an exhaust gas purification device (post-treatment device) in the exhaust path of the diesel engine, and the exhaust gas discharged from the diesel engine is supplied to the diesel particulate filter. There is known a technique of purifying with (see Patent Document 1). In addition, there is a technique of providing an exhaust gas purification device on a vehicle body frame on which a diesel engine is mounted (see Patent Document 2, Patent Document 3, and Patent Document 4). Furthermore, a container for transporting frozen cargo and the like is equipped with a refrigeration air conditioner and an engine that drives the air conditioner, and the container is kept at a temperature (for example, −20 ° C.) or less required for refrigeration storage of the cargo. There is also a technique for transporting cargo in a frozen state by maintaining the internal temperature and connecting the container to a tractor (Patent Document 5).

Japanese Patent Laid-Open No. 2003-27922 JP 2009-108685 A JP 2011-43078 A JP 2011-121522 A JP 2008-8516 A

  In the structures of Patent Documents 2 to 4 in which the exhaust gas purifying device (Patent Document 1) is mounted on the vehicle body frame, the exhaust gas regulation is first adapted to be realized with the diesel engine mounted on the vehicle body.

  However, in recent years, it has been required that a diesel engine alone before being mounted on a vehicle body should satisfy exhaust gas regulations and guarantee its quality. Furthermore, the diesel engine has wide versatility and is used in various fields such as agricultural machines, construction machines, power generation devices, ships, and cargo transportation containers.

  Therefore, as an engine manufacturer that supplies general-purpose diesel engines, it is necessary to configure the exhaust gas purification device as a post-processing device to support the diesel engine itself, and to clear the exhaust gas regulations to guarantee its quality There is.

  However, the installation space of the diesel engine varies depending on the machine on which it is mounted, but there are many restrictions on the installation space of the diesel engine due to demands for weight reduction and compactness. The technical problem is how to arrange and support the exhaust gas purifying device in the diesel engine alone in the limited mounting space.

  For example, as in Patent Document 5, in a conventional technique in which a diesel engine as a drive source for an air conditioner or the like is mounted on a freight container, a diesel particulate filter can be provided on an upper portion of the diesel engine or the like. However, the installation space of the diesel engine cannot be made compact easily. In addition, since the outer dimensions of the freight shipping container are defined according to the purpose of use and the outer dimensions cannot be increased, there is a problem that the cargo loading capacity of the container needs to be reduced. In addition, when the cargo transport container is kept in operation for a long time, or when the container in operation is moved for a long distance, the engine is continuously operated for a long time in a relatively low speed rotation state. Since it is operated, there is a problem that the exhaust gas purification temperature of the exhaust gas purification device cannot be easily maintained above the temperature at which the exhaust gas can be continuously purified.

  Accordingly, the present invention seeks to provide an engine device that has been improved by examining these current conditions.

  In order to achieve the above object, an engine device according to a first aspect of the present invention has a structure in which an exhaust gas purifying device is provided in an exhaust path of an engine, and an oil pan is disposed at the bottom of the engine, A support for connecting the exhaust gas purification device is provided on the oil pan, and the exhaust pan is supported by the oil pan.

  According to a second aspect of the present invention, in the engine device according to the first aspect, the side surface of the oil pan projects outwardly from the side surface of the cylinder block among the side surfaces of the engine, and the side surface of the cylinder block and the side surface of the cylinder block The exhaust gas purifying device is disposed adjacent to the upper surface of the oil pan.

  According to a third aspect of the present invention, in the engine device according to the first aspect, the first bracket provided on a side surface portion of a cylinder block forming the engine and a second bracket provided on a side surface portion of the oil pan are provided. The support body is formed by the second bracket, the exhaust gas purification device is connected to the first bracket and the second bracket, and the exhaust gas purification device is connected to an exhaust manifold of the engine via an expansion tube. Are connected.

  According to a fourth aspect of the present invention, in the engine device according to the third aspect, at least one side surface of the exhaust gas inlet side end portion or the exhaust gas outlet side end portion of the side surface portion of the exhaust gas purification device. The first bracket is fastened to the part, and the second bracket is fastened to the bottom part of the exhaust gas purification device.

  According to a fifth aspect of the present invention, in the engine device according to the first aspect, the engine is continuously operated at a specific rotational speed, and the exhaust gas purification device It is formed by an oxidation catalyst that oxidizes carbon substances or nitrogen oxides.

  According to the first aspect of the present invention, an exhaust gas purification device is provided in the exhaust path of the engine, and an oil pan is disposed at the bottom of the engine, and the exhaust gas purification device is disposed on the oil pan. Since the support body to be connected is provided and the exhaust gas purification device is supported by the oil pan, the exhaust gas purification device can be compactly assembled close to the engine. The exhaust gas purification apparatus can be installed without substantially increasing the installation width dimension (height, left-right width dimension, front-rear width dimension) of the engine. That is, for example, the engine can be mounted compactly in a container or the like.

  According to the second aspect of the present invention, the side surface of the oil pan projects outward from the side surface of the cylinder block among the side surfaces of the engine, and is adjacent to the side surface of the cylinder block and the upper surface of the oil pan. Since the exhaust gas purification device is arranged, the exhaust gas purification temperature of the exhaust gas purification device can be easily maintained above the temperature necessary for purification of the exhaust gas by heat transfer from the cylinder block. In particular, the exhaust gas purification performance of the engine can be easily maintained even when the engine is continuously operated at a low speed for a long time and the internal temperature of the container is kept constant.

  According to a third aspect of the present invention, the first bracket provided on the side surface portion of the cylinder block forming the engine and the second bracket provided on the side surface portion of the oil pan are provided, and the second bracket Since the support body is formed, the exhaust gas purification device is connected to the first bracket and the second bracket, and the exhaust gas purification device is connected to an exhaust manifold of the engine via an expansion tube. The exhaust gas purification device can be easily assembled by two-point support of the first bracket for fixing the side surface and the second bracket for fixing the lower surface. The mounting position of the exhaust gas purification device can be easily adjusted with respect to the exhaust manifold provided in the cylinder head of the engine.

  According to the fourth aspect of the present invention, the first bracket is fastened to at least one of the side surfaces of the exhaust gas purification device, that is, the exhaust gas inlet side end or the exhaust gas outlet side end. At the same time, since the second bracket is fastened to the bottom surface of the exhaust gas purification device, the assembly position of the exhaust gas in the moving direction of the exhaust gas purification device is regulated by the first bracket. The The assembly position of the exhaust gas purification device in the vertical direction is restricted by the second bracket. That is, the exhaust gas purification device can be easily attached to and detached from the side surface of the cylinder block and the side surface of the oil pan. Assembling workability of the exhaust gas purification device can be improved.

  According to the invention described in claim 5, the engine is continuously operated at a specific rotational speed, and the exhaust gas purification device oxidizes carbon substances or nitrogen oxides in the exhaust gas. Therefore, the outer shape of the exhaust gas purification device can be made compact compared to a structure in which a honeycomb filter that actively collects particulate matter in the exhaust gas is provided. Hazardous substances in the exhaust gas can be reduced by the oxidation catalyst without providing a honeycomb filter that actively collects particulate matter in the exhaust gas.

It is a front view of the diesel engine mounted in the container. It is a side view of the diesel engine mounted in the container. It is a front view of a diesel engine. It is a rear view of a diesel engine. It is a side view of the intake manifold installation side of a diesel engine. It is a side view of the exhaust manifold installation side of a diesel engine. It is a top view of a diesel engine. It is a bottom view of a diesel engine. It is the perspective view seen from the front of the exhaust manifold installation side of a diesel engine. It is the perspective view seen from the back of the exhaust manifold installation side of a diesel engine. It is the perspective view seen from the front of the intake manifold installation side of a diesel engine. It is the perspective view seen from the back of the intake manifold installation side of a diesel engine. It is a perspective view of the attachment part of an exhaust-gas purification apparatus. It is a cross-sectional side view of an exhaust gas purification device. It is a cross-sectional front view of an exhaust gas purification device. It is a side view of a common rail and an exhaust gas recirculation apparatus part. It is the perspective view which looked at the exhaust gas recirculation apparatus part from the upper part. It is the perspective view which looked at the common rail and the exhaust gas recirculation device from above. It is a top view of a common rail and an exhaust gas recirculation apparatus. It is an output diagram of a diesel engine. It is explanatory drawing of the electric power generating apparatus carrying a diesel engine. It is explanatory drawing of the refrigerator carrying a diesel engine.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. 1 is a front view of a diesel engine mounted on a container, FIG. 2 is a side view of the diesel engine mounted on a container, FIG. 3 is a front view of the diesel engine, FIG. 4 is a rear view of the diesel engine, and FIG. 6 is a side view of the exhaust manifold installation side of the diesel engine, FIG. 7 is a plan view of the diesel engine, and FIG. 8 is a bottom view of the diesel engine. The overall structure of the diesel engine 1 will be described with reference to FIGS. 1 to 8. In the following description, the intake manifold installation side of the diesel engine 1 is simply referred to as the right side of the diesel engine 1, and the exhaust manifold installation side of the diesel engine 1 is also simply referred to as the left side of the diesel engine 1.

  As shown in FIGS. 3 to 6, an intake manifold 3 is disposed on the right side surface of the cylinder head 2 of the diesel engine 1. The cylinder head 2 is mounted on a cylinder block 5 in which an engine output shaft 4 (crankshaft) and a piston (not shown) are built. An exhaust manifold 6 is disposed on the left side surface of the cylinder head 2. The front end and the rear end of the engine output shaft 4 are projected from the front and rear surfaces of the cylinder block 5.

  As shown in FIGS. 4 to 6, a flywheel housing 8 is fixed to the rear surface of the cylinder block 5. A flywheel 9 is provided in the flywheel housing 8. A flywheel 9 is pivotally supported on the rear end side of the engine output shaft 4. Moreover, the compressor 7 for refrigerant | coolant compression as an air conditioning apparatus is provided. The compressor 7 is fixed to the flywheel housing 8. The compressor 7 is configured to take out the power of the diesel engine 1 via the flywheel 9.

  Further, an oil pan 11 is disposed on the lower surface of the cylinder block 5. The flat upper area of the oil pan 11 is formed larger than the flat bottom area of the cylinder block 5. That is, the left and right side portions of the oil pan 11 protrude outward from the left and right side surfaces of the cylinder block 5, and the front portion of the oil pan 11 protrudes forward from the front surface of the cylinder block 5 to increase the oil storage volume of the oil pan 11. In this configuration, a large amount of engine oil (not shown) is stored in the oil pan 11 so that the engine oil is prevented from running short during continuous operation of the diesel engine 1.

  As shown in FIGS. 4 to 6, the intake manifold 3 is provided with an intake throttle valve 14 that takes in external air and an exhaust gas recirculation device (EGR) 15 that takes in exhaust gas for recirculation. An air cleaner 16 is connected to the intake manifold 3 via an intake throttle valve 14. The external air that has been dedusted and purified by the air cleaner 16 is sent to the intake manifold 3 via the intake throttle valve 14 and supplied to each cylinder of the four-cylinder diesel engine 1.

  Further, the exhaust gas recirculation device 15 mixes the recirculated exhaust gas (EGR gas from the exhaust manifold 6) of the diesel engine 1 and fresh air (external air from the air cleaner 16) and supplies it to the intake manifold 3. A main body case (collector) 17, a recirculation exhaust gas pipe 19 as a recirculation joint body connected to the exhaust manifold 6 via an EGR cooler 18 as a recirculation exhaust gas cooling means, and the recirculation exhaust gas And an EGR valve 20 for adjusting the suction amount of the gas. The EGR main body case 17 incorporates an intake throttle valve (not shown) for adjusting the amount of fresh air.

  With the above configuration, the EGR main body case 17 is communicated with the recirculated exhaust gas pipe 19 via the EGR valve 20, and a part of the exhaust gas discharged from the diesel engine 1 to the exhaust manifold 6 is transferred from the intake manifold 3 to the diesel engine. By returning to 1, the combustion temperature of the diesel engine 1 decreases, the amount of nitrogen oxide (NOx) discharged from the diesel engine 1 is reduced, and the fuel efficiency of the diesel engine 1 is improved.

  A cooling water pump 21 for circulating cooling water in the cylinder block 5 and a radiator (not shown) is provided. A cooling water pump 21 is disposed in front of the diesel engine 1. A cooling water pump 21 is connected to the front end portion of the engine output shaft 4 via a V belt 22 or the like, and the cooling water pump 21 is driven. On the other hand, the EGR cooler 18 is connected to the cooling water pump 21 via the cooling water pipe 23. The cooling water is sent from the cooling water pump 21 into the cylinder block 5 through the EGR cooler 18.

  As shown in FIGS. 3, 4, and 6, an exhaust gas purification device (oxidation catalyst, soot filter) 31 for purifying exhaust gas discharged from each cylinder of the diesel engine 1 is provided. The exhaust gas discharged from each cylinder of the diesel engine 1 to the exhaust manifold 6 is discharged to the outside from the exhaust pipe 32 via the exhaust gas purification device 31 and the like. The exhaust gas purification device 31 is configured to reduce carbon monoxide (CO), hydrocarbons (HC), and particulate matter (PM) in the exhaust gas of the diesel engine 1.

  The exhaust gas purification device 31 includes a DPF case 33. The DPF case 33 is configured in a substantially cylindrical shape extending in the front-rear direction in parallel with the output shaft (crankshaft) 4 of the diesel engine 1 in plan view. An exhaust gas inlet pipe 34 for taking in the exhaust gas and an exhaust gas outlet pipe 35 for discharging the exhaust gas are provided on both front and rear sides (one end side and the other end side in the exhaust gas movement direction) of the DPF case 33.

  Further, an exhaust joint body 6a is integrally formed at the rear end portion of the exhaust manifold 6 by die casting. An exhaust gas inlet pipe 34 is connected to the exhaust joint body 6 a through a bellows-like expansion and contraction pipe 36 and an elbow steel pipe 37. That is, the expansion tube 36 is extended downward from the lower surface side of the exhaust joint body 6 a, the elbow steel pipe 37 is extended forward from the lower end side of the expansion tube 36, and the exhaust gas inlet pipe 34 is connected to the front end side of the elbow steel pipe 37. The rear end side opening is fastened. An exhaust gas inlet pipe 34 is communicated with the exhaust manifold 6 of the diesel engine 1 so that the exhaust gas of the diesel engine 1 is introduced into the DPF case 33.

  Further, the rear end side of the exhaust gas outlet pipe 35 is connected to the front side of the DPF case 33. A silencer 38 and a tail pipe 39 are connected to the front end side of the exhaust gas outlet pipe 35 via the exhaust pipe 32 (see FIG. 1). For example, a diesel oxidation catalyst 40 such as platinum is accommodated inside the DPF case 33 (see FIGS. 14 and 15). With the above configuration, the content of carbon monoxide (CO) and hydrocarbon (HC) in the exhaust gas of the diesel engine 1 and the particulate matter (PM) in the exhaust gas are reduced.

  As described above, the exhaust gas purification device 31 is formed of only the diesel oxidation catalyst 40 that oxidizes the carbon substance or nitrogen oxide in the exhaust gas discharged from the diesel engine 1. Therefore, the outer shape of the exhaust gas purification device 31 can be made compact compared to a structure in which a honeycomb filter that actively collects particulate matter in the exhaust gas is provided. Further, since the diesel engine 1 is continuously operated at a specific rotational speed, the diesel oxidation catalyst 40 is provided without providing a honeycomb filter or the like that actively collects particulate matter in the exhaust gas. Can sufficiently reduce harmful substances in exhaust gas.

  Next, the fuel system structure of the diesel engine 1 will be described with reference to FIGS. As shown in FIGS. 5 and 7, fuel tanks (not shown) are connected to the injectors 41 for the four cylinders provided in the diesel engine 1 via the fuel pump 42 and the common rail 43. Each injector 41 has an electromagnetic switching control type fuel injection valve (not shown). A common rail 43 is fixed to the right side surface of the cylinder head 2, the common rail 43 is disposed close to the lower side of the intake manifold 3, and the common rail 43 is provided close to the intake manifold 3 and the exhaust gas recirculation device 15.

  As shown in FIGS. 5 and 7, a fuel tank (not shown) is connected to the suction side of the fuel pump 42 via a fuel filter 44 and a low pressure pipe 45. The fuel in the fuel tank is sucked into the fuel pump 42 through the fuel filter 44 and the low pressure pipe 45. On the other hand, a common rail 43 is connected to the discharge side of the fuel pump 42 via a high-pressure pipe 46. A high pressure pipe 46 is connected to the middle of the cylindrical common rail 43 in the longitudinal direction. In addition, injectors 41 for four cylinders are connected to the common rail 43 through four fuel injection pipes 47, respectively. The ends of the fuel injection pipes 47 for four cylinders are connected to the longitudinal direction of the cylindrical common rail 43, respectively.

  With the above configuration, the fuel in the fuel tank is pumped to the common rail 43 by the fuel pump 42, and high-pressure fuel is stored in the common rail 43. The fuel injection valve of each injector 41 is controlled to open and close, whereby high-pressure fuel in the common rail 43 is injected from each injector 41 to each cylinder of the diesel engine 1. That is, by electronically controlling the fuel injection valve of each injector 41, the injection pressure, injection timing, and injection period (injection amount) of the fuel supplied from each injector 41 can be controlled with high accuracy. Therefore, nitrogen oxides (NOx) discharged from the diesel engine 1 can be reduced. Noise vibration of the diesel engine 1 can be reduced.

  The fuel pump 42 is driven by the engine output shaft 4. A fuel pump 42 is connected to the fuel tank via a fuel return pipe. A common rail return pipe is connected to the end of the cylindrical common rail 43 in the longitudinal direction via a return pipe connector that limits the pressure of fuel in the common rail 43. That is, surplus fuel from the fuel pump 42 and surplus fuel from the common rail 43 are collected in the fuel tank via the fuel return pipe and the common rail return pipe.

  Next, a usage example of the diesel engine 1 will be described with reference to FIGS. As shown in FIGS. 1 to 2, a square box type cargo transport container 52 for transporting frozen cargo or the like is mounted on a trailer vehicle body 51 that is pulled by a tractor (not shown). The trailer vehicle body 51 is horizontally supported by a retractable front support leg 53 and a rear wheel 54 and stored in a fixed place, while the front support leg 53 is stored and the trailer vehicle body is placed at the rear of the tractor. The front part of 51 is connected and it is comprised so that the trailer vehicle body 51 may be pulled with a tractor.

  In addition, an air conditioning housing 55 for air conditioning equipment is provided on the front surface of the cargo transport container 52. An air conditioner (not shown) for controlling the temperature in the container 52 is installed in the air conditioning housing 55. An engine room 56 is formed below the air conditioning housing 55. The diesel engine 1 and the compressor 7 that is a part of the air conditioning apparatus are installed in the engine room 56. By operating the compressor 7 by the diesel engine 1 and compressing the refrigerant of the air-conditioning equipment by the compressor 7, the temperature in the freight transport container 52 is kept at a cold temperature suitable for storing frozen cargo (−20 ° C. or the like). It is configured to hold.

  FIG. 20 shows a torque curve Tmx unique to the engine 1 obtained from the output characteristic map M showing the relationship between the torque T and the rotational speed N of the engine 1, and the rotational speed of the engine 1 is shown in FIG. The rotational speed N of the engine 1 is controlled so that N is limited to only two types of rotational speeds N # 1 and N # 2. The rotation speed N of the engine 1 is initially set so as to be maintained at either the low-speed side intermediate rotation speed N # 1 or the high-speed-side rated rotation speed N # 2. When transporting frozen cargo in the freight transport container 52, the diesel engine 1 is rotated at a constant high speed N # 2 at a constant high speed until the temperature in the freight transport container 52 drops to the cold temperature. While the temperature in the cargo transport container 52 is lowered to the cold insulation temperature in a short time, when the temperature in the cargo transport container 52 falls to the cold insulation temperature, the diesel engine 1 is rotated at a constant low speed at an intermediate rotational speed N # 1. The temperature inside the freight shipping container 52 is maintained at the cold temperature. When the diesel engine 1 is operated at an intermediate rotational speed N # 1, the content of carbon monoxide (CO) and hydrocarbon (HC) in the exhaust gas of the diesel engine 1 and particulate matter (PM) in the exhaust gas ) Is reduced by the diesel oxidation catalyst 40.

  As shown in FIGS. 1, 2, 12, and 18, a maintenance door 57 is provided on the front surface of the engine room 56 so as to be opened and closed. By opening the door 57, the front surface of the engine room 56 is opened forward. Also, the front of the diesel engine 1 is directed to the left side of the cargo transport container 52, the diesel engine 1 is disposed on the right side of the engine room 56 toward the front of the cargo transport container 52, and the compressor 7 is disposed on the left side of the engine room 56. Place. That is, the right side surface of the diesel engine 1 and the right side surface of the compressor 7 are configured to face the front opening of the engine room 56.

  Further, as shown in FIGS. 1 to 2, 12, and 18, an intake manifold 3 is disposed on the right side of the diesel engine 1. An intake throttle valve 14, an EGR valve 20 as an exhaust gas recirculation valve, a fuel filter 44, and a common rail 43 are disposed on the intake manifold 3 installation side of the diesel engine 1, and the diesel adjacent to the intake manifold 3 installation side. An EGR cooler 18 as exhaust gas cooling means for cooling the exhaust gas for recirculation is provided on the side surface of the engine 1, and the maintenance door 57 of the engine room 56 in which the diesel engine 1 is installed is connected to the maintenance door 57 of the diesel engine 1. The intake manifold 3 installation side faces each other.

  Further, as shown in FIGS. 12 and 18, on the intake manifold 3 installation side of the diesel engine 1, an engine oil supply port 61 on the upper surface of the oil pan 11, an engine oil filtering filter 62, and a diesel engine 1 start-up. A starter 63 and the fuel pump 42 are provided. On the other hand, the injector 41 is arranged on the upper surface of the diesel engine 1 near the intake manifold 3 installation side of the engine 1. A drain cap 64 for extracting oil from the oil pan 11 is provided below the side surface of the oil pan 11 on the intake manifold 3 installation side.

  With the above configuration, maintenance and inspection work for the intake throttle valve 14, the EGR valve 20, the fuel filter 44, the common rail 43, the EGR cooler 18, and the like are performed by an operator at the front of the trailer vehicle body 51 in the engine room 56. It can be executed from the front opening side. On the other hand, the engine oil refueling work to the fuel filling port 61, the replacement work of the engine oil filter 62, and the maintenance and inspection work of the starter 63 or the fuel pump 42 or the injector 41 are performed from the front opening side of the engine room 56 in the same manner as described above. Can be executed.

  As shown in FIGS. 1, 2, 12, and 18, in a container-mounted engine device that drives an air conditioner (compressor 7) or the like mounted in a freight transport container 52 by a diesel engine 1, An intake throttle valve 14, an exhaust gas recirculation valve (EGR valve 20), a fuel filter 44, and a common rail 43 are arranged on the intake manifold 3 installation side, and the side surface of the diesel engine 1 adjacent to the intake manifold 3 installation side. In addition, an exhaust gas cooling means (EGR cooler 18) for cooling the exhaust gas for recirculation is provided, and the intake manifold 3 of the diesel engine 1 is installed in the maintenance door 57 of the engine room 56 in which the diesel engine 1 is installed. It is configured to face each other. Therefore, by opening the maintenance door 57, the intake throttle valve 14, the EGR valve 20, the fuel filter 44, the common rail 43, and the EGR cooler 18 can be maintained by work from one direction. When the maintenance and inspection of the diesel engine 1 is performed, it is not necessary to open the engine room 56 in many directions, so that the diesel engine 1 can be installed compactly in a small space and the maintenance of each part of the diesel engine 1 can be prevented from being forgotten. . Maintenance work of the diesel engine 1 can be improved by maintenance work from one side.

  As shown in FIGS. 1, 2, 12, and 18, an engine oil supply port 61, an engine oil filter 62, a starter 63, and a fuel pump 42 are provided on the intake manifold 3 installation side of the diesel engine 1. On the other hand, the injector 41 is arranged on the upper surface of the diesel engine 1 near the intake manifold 3 installation side of the diesel engine 1. Therefore, the maintenance and inspection work of the diesel engine 1 can be improved while improving the engine oil supply workability, the workability of replacing the engine oil filter 62, the maintenance workability of the starter 63, the fuel pump 42, the injector 41, and the like. You can prevent them from forgetting their work. The maintenance and inspection workability of the diesel engine 1 can be further improved.

  Next, with reference to FIGS. 9, 10, and 13 to 15, a mounting structure of the exhaust gas purification device 31 will be described. As shown in FIGS. 9, 10, and 13 to 15, an exhaust gas purification device 31 is provided in the exhaust path of the diesel engine 1. An oil pan 11 is disposed at the bottom of the diesel engine 1. The side surface of the oil pan 11 is protruded outward from the side surface of the cylinder block 5 among the side surfaces of the diesel engine 1. An exhaust gas purification device 31 is disposed adjacent to the side surface of the cylinder block 5 and the upper surface of the oil pan 11. That is, the exhaust gas purifying device 31 is installed at the connecting portion (corner corner) between the side surface of the cylinder block 5 and the upper surface of the oil pan 11.

  A first bracket 71 provided on the side surface of the cylinder block 5 forming the diesel engine 1 and a second bracket 72 provided on the side surface of the oil pan 11 are provided. A first bracket 71 is provided as a support for connecting the exhaust gas purification device 31 to the cylinder block 5. The cylinder block 5 is configured to support the exhaust gas inlet pipe 34 of the exhaust gas purification device 31. The first bracket 71 is fastened to the side surface of the cylinder block 5 with bolts 73. A flange body 74 is integrally provided at an end portion of the exhaust gas inlet pipe 34 on the exhaust gas inlet side, and one side portion of the flange body 74 is fastened to the first bracket 71 with a bolt 75 and a nut 76.

  Further, as shown in FIGS. 13 to 14, the other end side of the elbow steel pipe 37 to which the expansion and contraction pipe 36 is connected to one end side is fastened to the flange body 74 with a bolt 77. That is, the exhaust gas inlet pipe 34 (DPF case 33) is connected to the cylinder block 5 and the elbow steel pipe 37 is connected to the exhaust gas inlet pipe 34 by using the flange body 74 also. Therefore, the cylinder block 5, the DPF case 33, and the elbow steel pipe 37 can be connected with high rigidity with a small number of parts.

  Further, as shown in FIGS. 13 and 15, a second bracket 72 is provided as a support for connecting the exhaust gas purification device 31 to the oil pan 11. The oil pan 11 is configured to support the DPF case 33 of the exhaust gas purification device 31. A receiving frame body 82 is fixed by welding to the lower surface of the DPF case 33 via a reinforcing plate body 81. The vertical portion of the second bracket 72 is fastened to the outer surface of the oil pan 11 with bolts 83, and the horizontal portion of the second bracket 72 is fastened to the lower surface of the receiving frame body 82 with bolts 84 and nuts 85.

  That is, the exhaust gas purification device 31 is connected to the first bracket 71 and the second bracket 72, and the exhaust gas purification device 31 is connected to the exhaust manifold 6 of the engine 1 via the telescopic pipe 36. The first bracket 71 is fastened to the side surface portion of the exhaust gas inlet side end portion of the side surface portion of the exhaust gas purification device 31, and the second bracket 72 is fastened to the bottom surface portion of the exhaust gas purification device 31. In addition, you may fasten a support body (1st bracket 71) to the side part of an exhaust-gas exit side edge part among the side parts of the exhaust-gas purification apparatus 31. FIG.

  As shown in FIGS. 1, 9, 10, and 13 to 15, in a container-mounted engine device that drives an air conditioner (compressor 7) or the like mounted in a freight container 52 by a diesel engine 1, diesel While the exhaust gas purification device 31 is provided in the exhaust path of the engine 1, the oil pan 11 is disposed at the bottom of the diesel engine 1, and a first support as a support that connects the exhaust gas purification device 31 to the oil pan 11. Two brackets 72 are provided, and the oil pan 11 is configured to support the exhaust gas purification device 31. Therefore, the exhaust gas purification device 31 can be assembled in a compact manner close to the diesel engine 1. The exhaust gas purification device 31 can be installed without substantially increasing the installation width dimension (height, left-right width dimension, front-rear width dimension) of the diesel engine 1. That is, the diesel engine 1 can be mounted in the container 52 in a compact manner, while the frozen cargo mounting volume of the container 52 can be easily secured.

  As shown in FIGS. 9 and 10, the side surface of the oil pan 11 projects outward from the side surface of the cylinder block 5 among the side surfaces of the diesel engine 1, and is adjacent to the side surface of the cylinder block 5 and the upper surface of the oil pan 11. An exhaust gas purification device 31 is arranged. Therefore, the exhaust gas purification temperature of the exhaust gas purification device 31 can be easily maintained above the temperature necessary for purification of the exhaust gas by heat transmission from the cylinder block 5. In particular, even when the diesel engine 1 is continuously operated for a long time at a low speed rotation (intermediate rotational speed N # 1 in FIG. 20) and the internal temperature of the cargo transport container 52 is kept constant, The exhaust gas purification performance of the diesel engine 1 can be easily maintained.

  As shown in FIGS. 9, 10, 13 to 15, a first bracket 71 provided on the side surface of the cylinder block 5 forming the diesel engine 1 and a second bracket 72 provided on the side surface of the oil pan 11 are provided. The support body is formed by the second bracket 72, the exhaust gas purification device 31 is connected to the first bracket 71 and the second bracket 72, and the exhaust manifold 6 of the diesel engine 1 is exhausted through the telescopic pipe 36. A gas purification device 31 is connected. Therefore, the exhaust gas purification device 31 can be easily assembled by two-point support of the first bracket 71 for fixing the side surface and the second bracket 72 for fixing the lower surface. The mounting position of the exhaust gas purification device 31 can be easily adjusted with respect to the exhaust manifold 6 provided in the cylinder head 2 of the diesel engine 1. An attachment error of the exhaust gas purification device 31 can be absorbed by the deformation of the expansion tube 36.

  As shown in FIGS. 13 to 15, the first bracket 71 is fastened to at least one side surface portion of the exhaust gas inlet side end portion or the exhaust gas outlet side end portion of the side surface portion of the exhaust gas purification device 31. The second bracket 72 is fastened to the bottom surface of the exhaust gas purification device 31. Therefore, the assembly position of the exhaust gas moving direction in the assembly position of the exhaust gas purification device 31 is regulated by the first bracket 71. The assembly position of the exhaust gas purification device 31 in the vertical direction is restricted by the second bracket 72. That is, the exhaust gas purification device 31 can be easily attached to and detached from the side surface of the cylinder block 5 and the side surface of the oil pan 11. Assembling workability of the exhaust gas purification device 31 can be improved.

  Next, with reference to FIG. 4, FIG. 7, FIG. 10, FIG. 12, and FIGS. 17 to 19, a mounting structure of the exhaust gas recirculation device 15 and the EGR cooler 18 as the exhaust gas cooling means will be described. As shown in FIGS. 9, 10, and 13 to 15, an exhaust gas recirculation device 15 is attached to the intake manifold 3 of the diesel engine 1, while the flywheel housing 8 disposed in the diesel engine 1 is An EGR cooler 18 (exhaust gas cooling means) for cooling the circulation exhaust gas is disposed.

  4, 7, 10, 12, and 17 to 19, a corner portion (cylinder head) between the intake manifold 3 installation surface and the flywheel housing 8 installation surface among the outer surfaces of the diesel engine 1. 2, a recirculation joint body 86 that communicates the exhaust gas recirculation device 15 and the EGR cooler 18 with a bolt. A recirculation exhaust gas pipe 19 is provided on the EGR cooler 18 through the recirculation joint body 86, and the exhaust gas from the EGR cooler 18 passes from the recirculation joint body 86 through the recirculation exhaust gas pipe 19 to the EGR valve 20. It is comprised so that it may be supplied to.

  Further, the exhaust gas purification device 31 is attached to the exhaust manifold 6 of the diesel engine 1, and the corner portion (exhaust gas) of the outer surface of the diesel engine 1 between the installation surface of the exhaust manifold 6 and the installation surface of the flywheel housing 8. At the rear end portion of the manifold 6, an exhaust joint body 6 a that communicates the exhaust manifold 6 with the EGR cooler 18 or the exhaust gas purification device 31 is provided.

  An exhaust gas inlet of the EGR cooler 18 is connected to the exhaust joint body 6a by an exhaust joint bolt 87 that can be screwed in from the intake manifold 3 installation side (right side of the engine 1) or the flywheel housing 8 installation side (rear side of the engine 1). The side ends are fastened. The exhaust gas of the diesel engine 1 from the exhaust manifold 6 is branched by the exhaust joint body 6a, and the exhaust gas is sent from the exhaust joint body 6a to the EGR cooler 18 or the exhaust gas purification device 31.

  Furthermore, as shown in FIGS. 17-19, the cooling water pump 21 which circulates the cooling water of the diesel engine 1 is provided, and it distributes to the opposing side surfaces (front side surface and rear side surface) among the side surfaces of the diesel engine 1, and the cooling water A pump 21 and an EGR cooler 18 are arranged. A cooling water pipe 23 that connects the cooling water inlet of the EGR cooler 18 to the cooling water outlet of the cooling water pump 21 is provided. An intermediate portion of the cooling water pipe 23 is extended on the upper surface side of the exhaust manifold 6 of the diesel engine 1.

  That is, one end side of the plurality of cooling water pipe support plate bodies 91 is fixed to the cooling water pipe 23 by welding. The other end side of each cooling water pipe support plate 91 is fastened to the upper surface of the exhaust manifold 6 with bolts 92. The cooling water of the radiator (not shown) is supplied from the cooling water pipe 23 to the exhaust gas outlet of the EGR cooler 18 so that the exhaust gas of the EGR cooler 18 is cooled by the cooling water. An outlet pipe 93 is connected to the exhaust gas inlet of the EGR cooler 18 so that cooling water is sent from the EGR cooler 18 to the cylinder block 5 via the outlet pipe 93 so that the cylinder block 5 is cooled with the cooling water. It is configured.

  As shown in FIGS. 1, 4, 7, 10, and 12, in a container-mounted engine device that drives an air conditioner (compressor 7) or the like mounted in a freight transport container 52 by a diesel engine 1, diesel An exhaust gas recirculation device 15 is attached to the intake manifold 3 of the engine 1, while a flywheel housing 8 is arranged in the diesel engine 1, and the exhaust gas for recirculation is cooled on the upper surface side of the flywheel housing 8. An EGR cooler 18 is disposed as an exhaust gas cooling means. Therefore, the EGR cooler 18 can be compactly arranged using the space on the upper surface side of the flywheel housing 8. The EGR cooler 18 can be installed without substantially increasing the installation width dimension (height, left-right width dimension, front-rear width dimension) of the diesel engine 1. That is, the diesel engine 1 can be compactly mounted on the container 52 while the cargo mounting volume of the container 52 can be easily secured.

  As shown in FIGS. 4, 7, 10, 12, and 17 to 19, exhaust gas is disposed at the corners between the intake manifold 3 installation surface and the flywheel housing 8 installation surface among the outer surfaces of the diesel engine 1. A recirculation exhaust gas pipe 19 is provided as a recirculation joint for communicating the recirculation device 15 and the EGR cooler 18. Therefore, the exhaust gas recirculation device 15 and the EGR cooler 18 can be arranged in a compact manner using the intake manifold 3 installation surface and the flywheel housing 8 installation surface of the diesel engine 1, while the exhaust gas recirculation from the EGR cooler 18. The exhaust gas can be moved toward the circulation device 15 with a small resistance. Without increasing the load of the diesel engine 1, it is possible to improve the exhaust gas purification function such as reducing nitrogen oxides in the exhaust gas.

  Further, the exhaust gas purification device 31 is attached to the exhaust manifold 6 of the diesel engine 1, and the outer surface of the diesel engine 1 has a corner portion between the exhaust manifold 6 installation surface and the flywheel housing 8 installation surface. An exhaust joint body 6 a that communicates the exhaust manifold 6 with the EGR cooler 18 or the exhaust gas purification device 31 is provided. Accordingly, the EGR cooler 18 and the exhaust gas purification device 31 can be arranged in a compact manner by using the exhaust manifold 6 installation surface and the flywheel housing 8 installation surface of the diesel engine 1, while the EGR cooler 18 and the exhaust gas purification device are arranged. The exhaust gas can be moved from the exhaust manifold 6 to 31 with a small resistance. The exhaust gas purification function can be improved without increasing the load of the diesel engine 1.

  As shown in FIGS. 14 and 17, the exhaust gas joint side end of the EGR cooler 18 is attached to the exhaust joint body 6 a by the exhaust joint bolt 87 that can be screwed from the intake manifold 3 installation side or the flywheel housing 8 installation side. It is concluded. Therefore, both the exhaust gas recirculation device 15 and the EGR cooler 18 can be attached and detached from the same side of the diesel engine 1 (the intake manifold 3 installation side or the flywheel housing 8 installation side), and the assembly workability of the EGR cooler 18 or Maintenance workability can be improved.

  As shown in FIGS. 4, 7, 10, 12, and 17 to 19, among the outer surfaces of the diesel engine 1, diesel engines are provided at the corners between the exhaust manifold 6 installation surface and the flywheel housing 8 installation surface. An exhaust joint body 6a that communicates the EGR cooler 18 is provided in one exhaust manifold 6, and the EGR cooler 18 is fastened to the exhaust joint body 6a from the intake manifold 3 installation side via the upper surface side or the lower surface side of the EGR cooler 18. It is configured as possible. Accordingly, the EGR cooler 18 can be attached to and detached from the exhaust joint body 6a without releasing the side of the engine room 56 on the flywheel housing 8 installation side, and the exhaust gas recirculation formed by the EGR cooler 18 or the EGR cooler 18 or the like. Equipment assembly workability and maintenance inspection workability can be improved.

  As shown in FIGS. 17-19, it is the structure provided with the cooling water pump 21 which circulates the cooling water of the diesel engine 1, Comprising: It distributes to the side surface which opposes among the side surfaces of the diesel engine 1, and a cooling water pump 21 and an EGR cooler. 18 and a cooling water pipe 23 connecting the cooling water inlet of the EGR cooler 18 to the cooling water outlet of the cooling water pump 21, and the cooling water pipe 23 on the upper surface side of the exhaust manifold 6 of the diesel engine 1. The middle part is extended. Therefore, the cooling water pipe 23 can be assembled in a compact manner using the highly rigid exhaust manifold 6 at a place where maintenance and inspection work of each part of the diesel engine 1 is not hindered. Since the cooling water pipe 23 is supported on the side of the engine 1 opposite to the side on which maintenance and inspection of each part of the diesel engine 1 is performed, the cooling water pipe is brought into contact with a tool or the like when performing maintenance and inspection on each part of the diesel engine 1. 23 can be prevented from being damaged.

  FIG. 21 shows a second embodiment in which the diesel engine 1 is mounted on a stationary or mobile power generator 96. As shown in FIG. 21, the generator 97 is fixed to the flywheel housing 8. The diesel engine 1 and the generator 97 are integrally stored in the housing 98 of the power generation device 96. The power of the diesel engine 1 is taken out to the generator 97 via the flywheel 9 and the generator 97 is driven by the diesel engine 1 to supply power.

  FIG. 22 shows a third embodiment in which the diesel engine 1 is mounted on a stationary or mobile refrigerator 100. As in FIG. 1 of the first embodiment, an air conditioning housing 55 for an air conditioner is provided on the outside of the refrigerator 100. An air conditioner (not shown) for controlling the temperature in the refrigerator 100 is installed in the air conditioning housing 55. An engine room 56 is formed below the air conditioning housing 55. In addition, similarly to FIG. 5 of 1st Embodiment, the compressor for refrigerant | coolant compression as an air conditioning apparatus is provided. The compressor which is a part of the air conditioner is fixed to the flywheel housing. The power of the diesel engine 1 is taken out to the compressor via a flywheel. The compressor is operated by the diesel engine 1, and the refrigerant in the air conditioner is compressed by the compressor. It is configured to be kept at a cold temperature suitable for storage of refrigerated cargo (for example, 10 ° C.).

DESCRIPTION OF SYMBOLS 1 Diesel engine 5 Cylinder block 6 Exhaust manifold 11 Oil pan 31 Exhaust gas purification apparatus 36 Telescopic pipe 40 Diesel oxidation catalyst 71 1st bracket (support body)
72 Second bracket (support)

Claims (5)

  An exhaust gas purification device is provided in the exhaust path of the engine, and an oil pan is disposed at the bottom of the engine, and a support body that connects the exhaust gas purification device to the oil pan is provided. An engine device configured to support the exhaust gas purification device.   A side surface of the oil pan is projected outward from a side surface of the cylinder block among the side surfaces of the engine, and the exhaust gas purification device is disposed adjacent to the side surface of the cylinder block and the top surface of the oil pan. The engine device according to claim 1.   A first bracket provided on a side surface portion of a cylinder block forming the engine; and a second bracket provided on a side surface portion of the oil pan, wherein the support body is formed by the second bracket, and the first bracket 2. The engine device according to claim 1, wherein the exhaust gas purification device is connected to a second bracket, and the exhaust gas purification device is connected to an exhaust manifold of the engine via an expansion tube.   The first bracket is fastened to at least one of the side portions of the exhaust gas purification device, that is, the exhaust gas inlet side end portion or the exhaust gas outlet side end portion, and the exhaust gas purification device has a bottom surface portion. The engine device according to claim 3, wherein the second bracket is fastened.   The engine is configured to continuously operate at a specific rotational speed, and the exhaust gas purification device is formed of an oxidation catalyst that oxidizes carbon substances or nitrogen oxides in the exhaust gas. The engine device according to claim 1, wherein

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