Exhaust assembly for prime mover of transport power system

Abstract

An exhaust assembly for exhausting exhaust gas from a prime mover during transportation is disclosed. The exhaust assembly may include a tail pipe including a lift portion, a soot portion, and an undercut outlet. The lift portion is inclined at a first angle relative to a vertical axis of the exhaust assembly. The lift portion is configured to receive exhaust gas. The soot portion is connected to the lift portion and configured to receive exhaust gas from the lift portion. The soot portion is inclined at a second angle relative to the vertical axis. And the undercut outlet is arranged at the tail end of the smoke dust part. The undercut outlet has an upper lip that shields fluid or debris from entering the exhaust assembly via the undercut outlet.

Description

Technical Field

[0001] The present disclosure generally relates to an exhaust assembly for a prime mover of a transportation power system. More specifically, the present disclosure relates to a gooseneck arrangement of a tail pipe of the exhaust assembly for releasing exhaust gas away from a transportation unit and into the air while preventing fluids (e.g., rainwater) or debris from entering the exhaust assembly and preventing exhaust deposits from accumulating within the exhaust assembly. Background Art

[0002] A transport climate control system (TCCS) may, for example, include a transport refrigeration system (TRS) and / or a heating, ventilation and air conditioning (HVAC) system. A TRS is typically used to control environmental conditions (e.g., temperature, humidity, air quality, etc.) within a cargo space of a transport unit (e.g., a truck, a container (such as a container on a flatbed, an intermodal container, etc.), a box truck, a semi-trailer tractor, a bus, or other similar transport unit). The TRS may maintain environmental conditions in the cargo space to maintain cargo (e.g., produce, frozen foods, medicines, etc.). In some embodiments, a transport unit may include an HVAC system for controlling the climate within a passenger space of the vehicle.

[0003] Auxiliary power units (APUs) may be used with tractor vehicles to reduce fuel consumption, maintenance costs, emissions, and noise generated when the tractor prime mover is idling during periods of driver rest or other periods when the vehicle is not moving. Some APUs are used in conjunction with multiple control systems to power vehicle functions (e.g., heating, cooling, engine warm-up, lighting), or to power other vehicle functions and operator convenience accessories.

[0004] The prime mover may be used to power the TCCS or the APU.The prime mover may generate exhaust gas that is directed to an exhaust assembly before being discharged into the environment. Summary of the invention

[0005] The present disclosure generally relates to an exhaust assembly for a prime mover of a transportation power system. More specifically, the present disclosure relates to a gooseneck arrangement of a tail pipe of the exhaust assembly for releasing exhaust gas away from a transportation unit and into the air while preventing fluids (e.g., rainwater) or debris from entering the exhaust assembly and preventing exhaust deposits from accumulating within the exhaust assembly.

[0006] The exhaust gas may contain undesirable substances, such as soot. The soot may be a mixture of moisture and carbon powder. When the soot is heated (e.g., by heat in the exhaust assembly) and vaporized into smaller droplets, the exhaust gas may be discharged in a less visible manner that provides a harmless and / or environmentally friendly appearance. For example, high temperatures in the exhaust assembly may evaporate larger soot droplets in the exhaust assembly. Thus, the exhaust gas containing vaporized soot is less visible when discharged, less likely to deposit and accumulate near the exhaust pipe outlet, and more aesthetically pleasing.

[0007] In order to control the emission of exhaust gas (including smoke) from the exhaust assembly, the outlet of the exhaust pipe is preferably oriented in a gradually inclined direction to reduce the visibility of the exhaust gas suddenly blowing out of the exhaust outlet to create a black cloud of exhaust gas. The gradually inclined pipe causes larger droplets of exhaust gas to be heated and evaporated by the heat of the exhaust gas in the tail pipe before leaving the exhaust assembly.

[0008] In the embodiments described herein, the tail pipe may generally receive exhaust gas from a vertically mounted muffler in an exhaust assembly of a prime mover or auxiliary power unit (APU) for a TCCS. The tail pipe provides a flow path that directs the exhaust flow from a generally vertical direction to a gradually inclined direction. An advantage of providing a gradual inclination rather than a sharp turn (e.g., a 90 degree angle in the tail pipe) in the exhaust assembly is that excessive exhaust gas deposition may be prevented at or after a sharp turn. Thus, the exhaust flow may be prevented from generating excessive exhaust gas deposition accumulation and blowing out a visible smoke cloud.

[0009] Embodiments described herein can provide a tail pipe coupled to a muffler. The tail pipe includes a lifting portion that can extend upward in a nearly vertically inclined direction to avoid sharp turns in the exhaust flow path. The exhaust flow path can travel to a soot portion of the tail pipe that is inclined in the same direction as the lifting portion with a smaller slope (e.g., a more gradual slope). In this way, sharp turns in the tail pipe can be avoided, and the accumulation of excessive exhaust deposits can be preferably reduced.

[0010] The outlet of the tail pipe can be arranged to prevent fluid (e.g., rainwater) or debris from entering the exhaust assembly. In some embodiments, the undercut outlet at the outlet end of the tail pipe is provided with an upper lip arranged at the outlet to shield the lower lip of the outlet to avoid falling into the fluid or debris. Therefore, the exhaust assembly does not require a fluid or water discharge device. Since a fluid discharge device is not required, it is possible to avoid the accumulation of discharge deposits at any impact point of the fluid discharge. The embodiments described herein can guide all exhaust gases through a single outlet channel so that any exhaust component naturally mixes with the atmosphere and does not accumulate at the fluid discharge point. In addition, noise can be suppressed, for example, by a combination of a diesel oxidation catalyst (DOC) matrix and an exhaust assembly. For example, the lifting portion and the soot portion of the tail pipe extend at different angles relative to the reference axis, thereby providing a curved flow path in the tail pipe. Noise sound waves propagating through the curved flow path of the tail pipe can be reflected from the inner wall of the tail pipe and suppressed when traveling through the curved flow path.

[0011] In one embodiment, an exhaust assembly for discharging exhaust gas from a prime mover during transport is provided. The exhaust assembly includes a tail pipe, the tail pipe including a lifting portion, a smoke portion, and an undercut outlet. The lifting portion is inclined at a first angle relative to a vertical axis of the exhaust assembly. The lifting portion is configured to receive exhaust gas. The smoke portion is connected to the lifting portion and is configured to receive exhaust gas from the lifting portion. The smoke portion is inclined at a second angle relative to the vertical axis. The undercut outlet is disposed at the tail end of the smoke portion, the undercut outlet having an upper lip, the upper lip shielding fluid or debris from entering the exhaust assembly via the undercut outlet.

[0012] In another embodiment, a transport power system for providing power during transport is provided. The transport power system includes a diesel engine and an exhaust assembly. The diesel engine has an engine exhaust outlet configured to release exhaust gas. The exhaust assembly is connected to the engine exhaust outlet. The exhaust assembly includes a tail pipe. The tail pipe includes a lifting portion, a smoke portion, and an undercut outlet. The lifting portion is inclined at a first angle relative to the vertical axis of the exhaust assembly. The lifting portion is configured to receive exhaust gas. The smoke portion is connected to the lifting portion and is configured to receive exhaust gas from the lifting portion. The smoke portion is inclined at a second angle relative to the vertical axis. The undercut outlet is disposed at the tail end of the smoke portion. The undercut outlet has an upper lip that shields fluid or debris from entering the exhaust assembly via the undercut outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Reference is now made to the accompanying drawings which form a part of this disclosure and which illustrate embodiments in which the systems and methods described in this specification may be practiced.

[0014] Figure 1A A schematic cross-sectional side view of a refrigerated transport unit with a multi-zone transport climate control system (MTCS) is shown according to an embodiment.

[0015] Figure 1B A perspective view of a vehicle having an auxiliary power unit is shown according to an embodiment.

[0016] Figure 1C A side view of a truck with a front wall mounted vehicle powered transport refrigeration unit is shown according to an embodiment.

[0017] Figure 2 A transportation power system according to an embodiment is shown.

[0018] Figure 3A is a perspective view of an exhaust assembly having a gooseneck tail pipe according to an embodiment.

[0019] Figure 3B is based on Figure 3A A side view of an exhaust assembly of an embodiment.

[0020] Figure 3C is based on Figure 3A A front view of an exhaust assembly of an embodiment.

[0021] Figure 4A is a schematic front view of a transportation climate control unit (TCCU) having an exhaust assembly terminating below a top wall of the TCCU according to an embodiment.

[0022] Figure 4B is a schematic front view of a TCCU having an exhaust assembly protruding through a top wall of the TCCU according to an embodiment.

[0023] Figure 4C is based on Figure 4A and Figure 4B A top view of the TCCU of an embodiment.

[0024] Like reference numerals denote like components. DETAILED DESCRIPTION

[0025] The present disclosure generally relates to an exhaust assembly for a prime mover of a transportation power system. More specifically, the present disclosure relates to a gooseneck arrangement of a tail pipe of an exhaust assembly for releasing exhaust gas away from a transportation unit and into the air while preventing fluid or debris from entering the exhaust assembly and preventing exhaust deposits from accumulating within the exhaust assembly.

[0026] As defined herein, the prime mover described herein refers to a prime mover of a transport power system (e.g., a prime mover of an auxiliary power unit (APU), a prime mover of a TCCS, etc.), rather than a vehicle prime mover used to move a vehicle. In some embodiments, the prime mover may be a diesel engine. That is, in some embodiments, there may be two or more different diesel engines on the same vehicle: one may be a main / vehicle (e.g., a tractor, a truck, etc.) engine used to move the vehicle, and the other may be an auxiliary engine of a transport power system (e.g., a diesel-driven compression ignition engine).

[0027] Figure 1A An embodiment of a multi-zone transport climate control system (MTCS) 100 for a transport unit (TU) 125 is shown, which can be towed, for example, by a tractor (not shown). The MTCS 100 includes a transport climate control unit (TCCU) 110 and a plurality of remote evaporator units 180. The TCCU 110 and each remote evaporator unit 180 provide climate control (e.g., temperature, humidity, air quality, etc.) in a separate area of ​​an interior space 150. Among other components, the TCCU 110 may include a refrigeration circuit that connects, for example, a compressor, a condenser, an evaporator, and an expansion valve to provide climate control in at least one area of ​​the interior space 150. Each evaporator unit 180 may also be connected to a refrigeration circuit to provide climate control to a specific area 152 of the interior space 150.

[0028] The interior space 150 may be divided into a plurality of zones 152. The term "zone" refers to a portion of an area of ​​the interior space 150 separated by walls 175. It should be understood that the present disclosure may also be used in a single zone TCCS. It is further understood that the MTCS 100 or single zone TCCS may be a climate controlled container transported by rail carts, trucks, trailers and / or ships.

[0029] The MTCS 100 for the TU 125 includes a TCCU 110 and a plurality of remote evaporator units 180 configured to provide climate control within each zone 152. For example, the TCCU 110 may provide climate control within zone 152a, the remote evaporator unit 180a may provide climate control within zone 152b, and the remote evaporator unit 180b may provide climate control within zone 152c.

[0030] The MTCS 100 also includes a MTCS controller 170 and one or more sensors (e.g., Hall effect sensors, current sensors, etc.) configured to measure one or more parameters of the MTCS 100 (e.g., ambient temperature, compressor suction pressure, compressor discharge pressure, supply air temperature, return air temperature, humidity, etc.) and transmit parameter data to the MTCS controller 170. The MTCS 100 is powered by a transport power system 112. The TCCU 110 is disposed on the front wall 130 of the TU 125. In other embodiments, it should be understood that the TCCU 110 may be disposed, for example, on the top wall 126 or another wall of the TU 125.

[0031] In some embodiments, the MTCS 100 may include a lower mounted unit 113. In some embodiments, the lower mounted unit 113 may be a TCCU that may also provide environmental control (e.g., temperature, humidity, air quality, etc.) within the interior space 150 of the TU 125. The lower mounted unit 113 may work with the TCCU 110 to provide redundancy or may replace the TCCU 110. Additionally, in some embodiments, the lower mounted unit 113 may be a transport power system that includes, for example, a generator that may help power the TCCU 110.

[0032] like Figure 1A As shown, the transport power system 112 is arranged in the TCCU 110. In other embodiments, the transport power system 112 can be separated from the TCCU 110. In addition, in some embodiments, the transport power system 112 may include two or more different power sources arranged inside or outside the TCCU 110. In some embodiments, the transport power system 112 may include one or more of a prime mover, a battery, an alternator, a generator, a solar panel, a fuel cell, etc. In addition, the prime mover may be an internal combustion engine or a micro-turbine engine, and may be operated as a dual-speed prime mover, a variable-speed prime mover, etc. In some embodiments, for the prime mover, an exhaust assembly for collecting or burning particles (such as carbon, soot, etc.) discharged from the tail pipe may be included. The transport power system 112 may provide power to, for example, the MTCS controller 170, a compressor (not shown), a plurality of direct current (DC) components (not shown), a power management unit (not shown), etc. The DC component may be an accessory or component of the MTCS 100 that requires DC power to operate. Examples of DC components may include, for example, a DC fan motor (e.g., an electrically commutated motor (ECM), a brushless DC motor (BLDC), etc.) for a condenser fan or evaporator blower, a fuel pump, a drain heater, a solenoid valve (e.g., a controller pulse controlled valve), etc.

[0033] The transport power system 112 may include a DC power supply (not shown) for providing DC power to a plurality of DC components (not shown), a power management unit (not shown), and the like. The DC power supply may receive mechanical power and / or electrical power from, for example, a utility power supply (e.g., a utility power supply, etc.), a prime mover (e.g., an internal combustion engine, such as a diesel engine, etc.) coupled to a generator machine (e.g., a belt-driven alternator, a direct-driven generator, etc.), and the like. For example, in some embodiments, the mechanical energy generated by the diesel engine is converted into electrical energy via a generator. The electrical energy generated via the belt-driven alternator is then converted into DC power via, for example, a bidirectional voltage converter. The bidirectional voltage converter may be a bidirectional multi-battery voltage converter.

[0034] Refer to the following Figure 1B One embodiment of the transport power system 112 is described below.

[0035] Figure 1B A vehicle 10 according to one embodiment is shown. The vehicle 10 is a semi-trailer tractor for transporting cargo stored in a cargo compartment (e.g., a container, a trailer, etc.) to one or more destinations. Hereinafter, the term "vehicle" may be used to represent all such tractors and trucks, and shall not be construed as being limited to only tractors in tractor-trailer combinations. In some embodiments, the vehicle 10 may be, for example, an inline truck, a box truck, etc.

[0036] The vehicle 10 includes a main power source 20, a cabin 25 defining a sleeping portion 30 and a driving portion 35, an APU 40, and a plurality of vehicle accessories 45 (e.g., electronic communications devices, cabin lights, a primary and / or auxiliary HVAC system, one or more primary and / or auxiliary HVAC fans, one or more visors for windows / windshields of the vehicle 10, cabin accessories, etc.). The cabin 25 may be accessed via a driver's side door (not shown) and a passenger side door 32. The cabin 25 may include a primary HVAC system (not shown) that may be configured to provide conditioned air within the driving portion 35 and potentially throughout the cabin 25, and an auxiliary HVAC system (not shown) for providing conditioned air within the sleeping portion 30 of the cabin 25. The cabin 25 may also include a plurality of cabin accessories (not shown). Examples of cabin accessories may include, for example, a refrigerator, a television, a video game console, a microwave, one or more device charging stations, a continuous positive airway pressure (CPAP) machine, a coffee maker, an auxiliary HVAC system for providing conditioned air to the sleeping portion 30 .

[0037] The main power source 20 can provide sufficient power to operate (e.g., drive) the vehicle 10 and any of a plurality of vehicle accessories 45 and cabin accessories 47. The main power source 20 can also provide power to the main HVAC system and the auxiliary HVAC system. In some embodiments, the main power source can be a prime mover, such as an internal combustion engine (e.g., a diesel engine, etc.).

[0038] In the illustrated embodiment, the APU 40 is an auxiliary power unit for the vehicle 10 when the main power source 20 is unavailable. For example, when the main power source 20 is unavailable, the APU 40 can be configured to provide power to one or more of vehicle accessories, cabin accessories, a main HVAC system, and an auxiliary HVAC system. In some embodiments, the APU 40 can be an electric APU. In other embodiments, the APU 40 can be an APU powered by a prime mover. The APU 40 can be attached to the vehicle 10 using any attachment method. In some embodiments, the APU 40 can be turned on (i.e., activated) or turned off (i.e., deactivated) by an occupant of the vehicle 10 (e.g., a driver or passenger). The APU 40 does not generally provide sufficient power to operate (e.g., drive) the vehicle 10. The APU 40 can be controlled by an APU controller 41. In some embodiments, the APU 40 may include the following regarding Figure 2 Describe the transport power system.

[0039] Figure 1C A temperature controlled inline truck 11 is depicted that includes a conditioned load space 12 for carrying cargo. A transport climate control unit (TCCU) 14 is mounted on a front wall 16 of the load space 12. The TCCU 14 is controlled by a controller 15 to provide temperature control within the load space 12. The truck 11 also includes a vehicle power compartment 18 that houses a truck prime mover 21, such as an internal combustion engine (e.g., a diesel engine, etc.) that provides power to move the truck 11. In some embodiments, the truck prime mover 21 can work in conjunction with an optional machine 22 (e.g., an AC generator). The TCCU 14 includes a transportation power system 13. In one embodiment, the transportation power system 13 can include an internal combustion engine (e.g., a diesel engine, etc.) for providing power to the TCCU 14. In one embodiment, the TCCU 14 includes a vehicle electrical system. Additionally, in some embodiments, the TCCU 14 can be powered by a battery power source in combination with the transportation power system 13 or by an optional machine 22. In some embodiments, the TCCU 14 can also be powered by the truck prime mover 21 in combination with a battery power source or an optional machine 22. Figure 2 An embodiment of the transport power system 13 will be described.

[0040] Although Figure 1CA temperature controlled inline truck 11 is shown, but it should be understood that the embodiments described herein may also be applied to any other type of transport unit, including but not limited to vans, containers (e.g., containers on flatbeds, intermodal containers, etc.), box trucks, or other similar transport units.

[0041] Figure 2 A transport power system 200 including a prime mover assembly 210 and an exhaust assembly 250 is shown according to one embodiment. The transport power system 200 also includes a cooling system 220, a fuel filter 230, and an air filter 240. In one embodiment, the transport power system 200 may also include a control module for controlling and operating the transport power system 200, a diesel particulate filter (DPF), a blower, a pressure sensor, a control switch, a system indicator, an ambient temperature sensor, etc.

[0042] For example, the transport power system 200 may be used as Figure 1A The transport power system 112 shown is used as Figure 1B The transport power system of the APU 40 shown, and / or Figure 1C The transport power system 13 is shown.

[0043] For example, in one embodiment, the transport power system 200 may be disposed within the housing 111 of the TCCU 110 . Figure 2 An illustrative example could be Figure 1A The transport power system 200 in the TCCU 110 is moved in the housing 111 from a direction D (eg Figure 1A ). In one embodiment, direction D may be opposite to the direction of travel of a carrier transporting TCCU 110. It should be understood that housing 111 may include other components such as climate control system components (e.g., compressor, condenser, evaporator, controller, etc.).

[0044] The prime mover assembly 210 is configured to provide mechanical power, for example, to power a generator to provide electricity supplied by the transport power system 200. The prime mover assembly 210 receives a fuel (e.g., diesel fuel), mixes the fuel with air, ignites the fuel-air mixture, and captures energy from the combustion of the fuel to power the generator. In the illustrated example, the prime mover assembly 210 includes a prime mover 215. The prime mover assembly 210 is coupled to an exhaust assembly 250.

[0045] In some embodiments, the prime mover 215 is a diesel engine, wherein the fuel is mixed with the intake air and ignited within the prime mover 215. The fuel combustion produces exhaust gas that may include pollutants such as particulate matter, fuel droplets, carbon oxides, nitrogen oxides, etc. The exhaust gas leaves the prime mover 215 at a temperature approximately equal to the fuel combustion temperature. The particulate matter may include smoke from incomplete combustion of the fuel. The exhaust gas leaves the prime mover assembly 210 via the exhaust outlet 235 of the prime mover assembly 210. In some embodiments, the diesel engine produces at least 18.9 kW of mechanical power.

[0046] In one embodiment, exhaust outlet 235 is coupled to prime mover 215. Exhaust outlet 235 is also coupled to exhaust assembly 250 for exhausting exhaust from prime mover assembly 210. Exhaust travels through exhaust outlet 235 and exhaust assembly 250 before being exhausted and dispersed into the environment. In one embodiment, prime mover 215 is mounted to a housing (e.g., Figure 1A In one embodiment, the exhaust outlet 235 is an exhaust manifold of the prime mover 210. During operation, the prime mover 210 may generate noise and vibration that may be transmitted to the housing and / or the exhaust assembly 250.

[0047] The cooling system 220 is configured to cool the prime mover assembly 210 during operation. For example, the cooling system 220 can circulate the engine coolant between the prime mover assembly 210 and a radiator (not shown) to remove heat from the prime mover assembly 210 and discharge the heat to the environment via the radiator (not shown). The fuel filter 230 is configured to filter contaminants from the fuel system before the fuel enters the prime mover assembly 210. The air filter 240 is configured to filter the intake air provided to the prime mover 215.

[0048] The exhaust assembly 250 is configured to treat the exhaust gas to reduce pollutants before dispersing the exhaust gas to the environment. The exhaust assembly 250 may be configured to protect air quality, for harmless purposes, to meet regulatory requirements, etc. In the illustrated example, the exhaust assembly 250 is coupled to the exhaust outlet 235 of the prime mover 215 to receive the exhaust gas from the prime mover 215. In one embodiment, the exhaust assembly may include an intermediate pipe 236 to direct the exhaust gas from the prime mover 215 to the treatment components of the exhaust assembly, such as a diesel particulate filter, a diesel oxidation catalyst, a muffler 258, a tail pipe 260, etc.

[0049] Tail pipe 260 includes an undercut outlet 255. The end of the undercut outlet 255 of the exhaust assembly 250 is the tail end of the tail pipe 260, and thus the tail end of the exhaust assembly 250. Therefore, the tail end is also the end opposite the end of the exhaust assembly 250 that is coupled to the engine system outlet 235. The undercut outlet 255 is configured to be exposed to the environment and is designed to prevent fluids (e.g., rain) or debris from entering the exhaust assembly 250.

[0050] Muffler 258 is configured to suppress noise traveling through exhaust assembly 250. In the illustrative example, muffler 258 may be disposed downstream of the DPF and / or the DOC.

[0051] Tail pipe 260 is disposed on an end of exhaust assembly 250 opposite the end coupled to prime mover assembly 210. Tail pipe 260 may include one or more connected conduits that are selectively arranged to release exhaust gas to the environment while preventing deposit accumulation within exhaust assembly 250. Tail pipe 260 may be arranged to prevent fluid and / or debris from entering exhaust assembly 250, as discussed further with respect to the following figures.

[0052] exist Figure 2 In the illustrative example of , exhaust assembly 250 includes means for mounting exhaust assembly 250 and / or components of exhaust assembly 250 directly or indirectly to a housing (e.g., Figure 1A In one embodiment, the mounting brackets 250 rigidly attach the exhaust assembly 250 to the housing 111. In one embodiment, the mounting brackets 250 rigidly attach the exhaust assembly 250 to the housing when installed. For example, the mounting brackets 259 can attach the vertical connection pipe 256 between the DOC 237 and the tail pipe 260 to the housing. In one embodiment, the mounting brackets 259 can attach the DOC and / or DPF to the housing. For example, the mounting brackets 259 can be one or more L-shaped brackets.

[0053] Figure 3A , Figure 3B and Figure 3C is for use with an exhaust assembly 350 (e.g., Figure 2 250 ) of the exhaust assembly of the tail pipe 360 ​​). Figure 3A A perspective view of a tail pipe 360 ​​is shown, Figure 3B A side view of a tail pipe 360 ​​is shown, Figure 3C A front view of the tail pipe 360 ​​is shown. It should be understood that FIG. 3A to FIG. 3C Can be Figure 2 Tail pipe 260 as shown and described above.

[0054] like Figure 3AAs shown, the tail pipe 360 ​​is disposed at the rear end of the exhaust assembly to prevent deposits from accumulating in the exhaust assembly 250. The tail pipe 360 ​​includes one or more pipes or pipe sections for guiding the exhaust flow in the tail pipe 360. The exhaust tail pipe 360 ​​can gradually change the flow direction of the exhaust pipe while generating a flow path for supporting the prime mover system (e.g., Figure 2 The back pressure of the operation of the prime mover system 210) is shown in FIG.

[0055] exist FIG. 3A to FIG. 3C In the example shown, tail pipe 360 ​​is connected to outlet end 358A of muffler 358. Outlet end 358A of muffler 358 includes end cap 358B that reduces the diameter of muffler 358 to the diameter of muffler outlet pipe 358C. Muffler outlet pipe 358C is connected to end cap 358B. One or more brackets 359 connect the exhaust assembly and / or tail pipe 360 ​​to the housing (e.g., Figure 1A In one embodiment, the bracket 359 may be Figure 2 Bracket 259 as shown and described above.

[0056] The tail pipe 360 ​​includes a lift portion 370 disposed downstream (relative to the exhaust flow direction) of the muffler 358 , a soot portion 380 , and an undercut outlet 390 .

[0057] The lifting portion 370 is a duct extending upward from the muffler 358 for guiding the flow path of the exhaust gas flowing in the tail end of the exhaust assembly. In one embodiment, the lifting portion 370 is a tubular duct. The lifting portion 370 arranges the flow direction of the exhaust gas to follow a first inclined direction in the lifting portion 370. The first angle is between the inclined direction and the direction D of the exhaust gas flow leaving the muffler 358. V between.

[0058] In the embodiment where the muffler 358 has a tubular body, the direction D V The direction D of the muffler 358 may correspond to the direction of the central axis of the muffler 358. In one embodiment, when the exhaust assembly 350 is mounted on the housing, the central axis of the muffler 358 is generally arranged to be perpendicular to the ground level. In such an embodiment, the direction D of the muffler 358 V And / or the central axis may substantially correspond to or be parallel to a vertical axis of a housing of, for example, a TCCU or APU.

[0059] The muffler outlet bend 371 is used to connect the lifting portion 370 to the muffler outlet pipe 358C. The muffler outlet bend 371 is provided between the muffler outlet pipe 358C and the lifting portion 370 for connection. In one embodiment, the lifting portion 370 includes a lifting portion bend 375 for connecting the lifting portion 370 to the smoke portion 380. The lifting portion bend 375 is provided between the lifting portion 370 and the smoke portion 380 for connecting the smoke portion 380 and adjusting the direction of the smoke portion 380 relative to the lifting portion 370.

[0060] The smoke section 380 is a duct extending upward from the lifting section 370 for guiding the flow path of the exhaust gas flowing in the tail end of the exhaust assembly 350. In one embodiment, the lifting section 370 is a tubular duct. The smoke section 380 is configured to guide the flow direction of the exhaust gas to generally follow the second inclined direction within the smoke section 380. V A second angle is defined between the direction of the exhaust flow of the TCCU or APU, the vertical axis of the housing, etc. In one embodiment, the second angle is greater than the first angle, so that the exhaust gas is at a greater angle (relative to the direction D) in the smoke portion 380 than in the lifting portion 370. V )flow.

[0061] It should be understood that the first and second inclined directions are arranged to prevent deposits (including soot) from accumulating on the inner surfaces of the lift portion 370 and / or the soot portion 380. In some embodiments, the exhaust gas exiting the exhaust assembly 350 will be at or near the combustion temperature of the fuel traveling through the prime mover assembly 210. In the exhaust tail pipe 360, the exhaust gas may heat any deposits accumulated on the inner surface of the exhaust tail pipe 360, and any accumulated deposits may be evaporated. The evaporated deposits may then be carried by the exhaust gas and discharged into the environment.

[0062] Figure 3B is a side view of tail pipe 360 ​​and is oriented so that when the exhaust assembly is mounted to a housing attached to a delivery unit, the delivery unit will travel in a direction into or out of the page. Figure 3C 360 is a front view of the tail pipe 360 ​​and is oriented so that when the exhaust assembly is mounted on a housing attached to the delivery unit, the delivery unit will travel left or right relative to the page. That is, the tail pipe 360 ​​is designed to discharge exhaust in a direction perpendicular to the direction of travel of the delivery unit.

[0063] like Figure 3B and Figure 3C As shown, the undercut outlet 390 is disposed at the rear end of the exhaust assembly to prevent fluid (e.g., rainwater) and / or debris from entering the exhaust assembly, particularly the tail pipe 360. In one embodiment, the undercut outlet 390 may be Figure 2 The undercut outlet 255. The undercut outlet 390 may have an upper lip 394 disposed above the lower lip 392, and the upper lip 392 extends outwardly so that the upper lip 394 can shield the lower lip 392 from above, thereby preventing any fluid (e.g., rainwater) falling from above from entering the exhaust assembly from the undercut outlet 390 on the tail pipe 360.

[0064] The tail pipe 360 ​​is shown relative to the direction D V The tilt direction. In direction D V A first angle 410 is defined between the direction 420 in which the lifting portion extends. V A second angle 430 is defined between the direction D and the direction 440 in which the smoke portion extends. V An undercut angle 450 is defined between a direction 460 connecting the upper lip 394 and the lower lip 392. In one embodiment, the first angle 410 may be approximately 10.6 degrees, the second angle 430 may be approximately 55 degrees, and the undercut angle 450 may be approximately 10 degrees.

[0065] Angle 470 can be defined as the amount of undercut relative to smoke portion 380. In one embodiment, angle 470 can be about 45 degrees or less so that the rigidity of undercut outlet 390 can be maintained, for example to resist debris from striking undercut outlet 490 and causing deformation of tail pipe 360. In one embodiment, upper lip 394 can shield lower lip 392 so that tail pipe 360 ​​does not require a drain hole to drain fluid (e.g., rainwater) out of the exhaust assembly. Since a drain hole is not required (which would typically be provided in a housing (e.g., a housing of a TCCU)), the risk of exhaust leaking out of the drain hole can be prevented.

[0066] like Figure 3C As shown, the inclination direction of the lifting portion 370 is generally arranged in the same plane as the inclination direction of the smoke portion 380. The plane may be perpendicular to Figure 3C As shown and with direction D V Intersecting planes.

[0067] It should be understood that when the first angle 410 and / or the second angle 430 are less than some angles in the embodiments discussed above, the tail pipe 360 ​​can be generally more vertically arranged. If the first angle 410 and / or the second angle 430 are too small, the generally more vertical configuration can increase the risk of fluid entering at the undercut outlet 390. When the first angle 410 and / or the second angle 430 are greater than some angles in the embodiments discussed above, the tail pipe 360 ​​can be generally more horizontally arranged, and the undercut outlet 390 can be arranged in a position that is more visible from the ground. If the first angle 410 and / or the second angle 430 are too large, the generally more horizontal configuration can increase the risk of making any unsightly exhaust gas discharged from the exhaust assembly more visible to observers on the ground, and is therefore less aesthetically pleasing.

[0068] It should also be understood that when the undercut angle 450 is less than some of the angles in the embodiments discussed above, the undercut outlet 390 can be arranged more vertically. If the undercut angle 450 is too small, the generally more vertical configuration can cause the upper lip 394 to extend less above the undercut outlet 390. Therefore, the effect of shielding the undercut outlet 390 from fluid entering the upper lip 394 will be reduced. When the undercut angle 450 is greater than some of the angles in the embodiments discussed above, the undercut outlet 390 can be arranged more horizontally. When the undercut angle 450 is too large, the generally more horizontal configuration will cause the upper lip 394 to shield the undercut outlet 390 too much, thereby increasing the risk of exhaust gas accumulation. This will increase the risk of sediment (such as smoke) falling into the housing when the prime mover is turned off.

[0069] It will also be appreciated that a combination of the first angle 410, the second angle 430 and / or the undercut angle 450 may be arranged such that the soot portion 380 is close to a horizontal position. In such an arrangement, the risk of exhaust gas accumulation will increase, thereby increasing the risk of deposits (e.g., soot) dripping into the housing when the prime mover is shut down.

[0070] Figure 4A and Figure 4B Schematic front views of a housing 500 according to two different embodiments are shown. The housing 500 includes a top wall 510 including an opening 540. The housing 500 may be a housing for a TCCU, an APU, etc. In one embodiment, the top wall 510 may be a top panel for the housing 500.

[0071] exist Figure 4A In the illustrated embodiment, the exhaust assembly 515A (e.g., Figure 2 The exhaust assembly 250 shown includes a tail pipe 520A (e.g., Figure 2 The tail pipe 260 shown in FIG. FIG. 3A to FIG. 3CTail pipe 520A is configured to terminate below top wall 510 of housing 500 and thus does not extend through opening 540 .

[0072] exist Figure 4B In the illustrated embodiment, the exhaust assembly 515B (e.g., Figure 2 The exhaust assembly 250 shown includes a tail pipe 520B (e.g., Figure 2 The tail pipe 260 shown in FIG. FIG. 3A to FIG. 3C Tail pipe 520B protrudes through top wall 510 of housing 500 by extending through opening 540 .

[0073] Figure 4C yes Figure 4A and Figure 4B The top view of the housing 500 is shown. Figure 4C As shown, the top wall 510 includes an opening 540, which is arranged so that the tail pipe 520A or 520B can freely disperse the exhaust gas into the environment without obstruction and hindrance. In one embodiment, the opening 540 includes a gap 530 around at least the tail end 550 of the tail pipe 520A or 520B for dissipating the heat released from the exhaust assembly 520A or 520B. The gap helps to avoid thermal damage to the top wall 510. It should be understood that the gap 530 can provide space for smoke in the exhaust gas to disperse and reduce the risk of deposits accumulating on the edges of the opening 540 of the top wall 510.

[0074] Various aspects:

[0075] It should be understood that any one of aspects 1 to 7 may be combined with any one of aspects 8 to 16.

[0076] Aspect 1. An exhaust assembly for discharging exhaust gas from a prime mover, the exhaust assembly comprising:

[0077] a tail pipe including a riser section, a soot section, and an undercut outlet;

[0078] The lifting portion is inclined at a first angle relative to a vertical axis of the exhaust assembly, and the lifting portion is configured to receive exhaust gas.

[0079] wherein the soot portion is connected to the lift portion and is configured to receive exhaust gas from the lift portion, the soot portion is inclined at a second angle relative to the vertical axis, and

[0080] The undercut outlet is arranged at the rear end of the smoke part, and the undercut outlet has an upper lip, and the upper lip shields the fluid or debris to prevent the fluid or debris from entering the exhaust component through the undercut outlet.

[0081] Aspect 2. An exhaust assembly according to aspect 1, wherein the second angle is greater than the first angle.

[0082] Aspect 3. The exhaust assembly according to any one of aspects 1 and 2, wherein the inclination direction of the smoke portion and the inclination direction of the lifting portion are arranged along the same plane.

[0083] Aspect 4. The exhaust assembly according to any one of aspects 1 to 3 further includes a muffler outlet pipe bend configured to receive the exhaust gas in the direction of the vertical axis and guide the exhaust gas to leave the muffler outlet pipe bend in the inclined direction of the lifting portion.

[0084] Aspect 5. An exhaust assembly according to any one of Aspects 1 to 4, wherein the tail pipe includes a lifting portion bend portion arranged between the lifting portion and the smoke portion, wherein the lifting portion bend portion is bent to receive exhaust gas traveling in an inclined direction of the lifting portion, and the lifting portion bend portion is configured to guide the exhaust gas to leave the lifting portion bend portion in the inclined direction of the smoke portion.

[0085] Aspect 6. An exhaust assembly according to any one of aspects 1 to 5, wherein the undercut outlet further comprises a lower lip portion disposed below the upper lip portion, the lower lip portion being recessed into the smoke portion such that the upper lip portion shields the lower lip portion to prevent fluid or debris from falling into the smoke portion.

[0086] Aspect 7. The exhaust assembly according to any one of aspects 1 to 6, wherein the tail pipe does not include a fluid discharge device.

[0087] Aspect 8. A transportation power system for providing power during transportation, the transportation power system comprising:

[0088] a prime mover having an engine exhaust outlet configured to release exhaust gas; and

[0089] An exhaust assembly connected to the engine exhaust outlet, the exhaust assembly comprising a tail pipe, the tail pipe comprising:

[0090] a lift portion inclined at a first angle relative to a vertical axis of the exhaust assembly, the lift portion being configured to receive exhaust gas;

[0091] a soot portion connected to the lift portion and configured to receive exhaust gas from the lift portion, the soot portion being inclined at a second angle relative to the vertical axis; and

[0092] An undercut outlet is disposed at the rear end of the smoke section, wherein the undercut outlet has an upper lip portion, wherein the upper lip portion shields fluid or debris to prevent the fluid or debris from entering the exhaust assembly through the undercut outlet.

[0093] Aspect 9. A transportation power system according to Aspect 8, wherein the second angle is greater than the first angle.

[0094] Aspect 10. The transport power system according to any one of aspects 8 to 9, wherein the inclination direction of the smoke part and the inclination direction of the lifting part are arranged along the same plane.

[0095] Aspect 11. The transport power system according to any one of aspects 8 to 10, further comprising a muffler outlet pipe bend that receives exhaust gas in the direction of the vertical axis and guides the exhaust gas to exit the muffler outlet pipe bend in the inclined direction of the lift portion.

[0096] Aspect 12. A transport power system according to any one of Aspects 8 to 11, wherein the tail pipe includes a lifting portion bend portion arranged between the lifting portion and the smoke portion, wherein the lifting portion bend portion is bent to receive exhaust gas traveling in an inclined direction of the lifting portion, and the lifting portion bend portion is configured to guide the exhaust gas to leave the lifting portion bend portion in the inclined direction of the smoke portion.

[0097] Aspect 13. A transport power system according to any one of Aspects 8 to 12, wherein the bottom cut outlet further comprises a lower lip portion arranged below the upper lip portion, and the lower lip portion is recessed into the smoke portion so that the upper lip portion covers the lower lip portion to prevent fluid or debris from falling into the smoke portion.

[0098] Aspect 14. A transportation power system according to any one of aspects 8 to 13, wherein the tail pipe does not include a fluid discharge device.

[0099] Aspect 15. A transportation power system according to any one of aspects 8 to 14, wherein the prime mover is configured to generate power for a transportation climate control system.

[0100] Aspect 16. The transportation power system according to any one of aspects 8 to 14, wherein the prime mover is configured to generate power for an auxiliary power unit.

[0101] The terms used herein are intended to describe specific embodiments and are not intended to be limiting. Unless otherwise expressly stated, the terms "a", "the" and "said" also include plural forms. When used herein, the terms "include" and / or "comprise" indicate the presence of features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components.

[0102] With respect to the foregoing description, it should be understood that changes in detail may be made, particularly in the construction materials and the shapes, sizes and arrangements of the components, without departing from the scope of the present disclosure. This specification and the described embodiments are exemplary only, and the actual scope and spirit of the present disclosure are specified by the appended claims.

Claims

1. An exhaust assembly for discharging exhaust gas from a prime mover during transportation, the exhaust assembly comprising: a tail pipe including a riser section, a soot section, and an undercut outlet; wherein the lifting portion is inclined at a first angle relative to a vertical axis of the exhaust assembly, the lifting portion being configured to receive exhaust gas, wherein the soot portion is connected to the lift portion and is configured to receive the exhaust gas from the lift portion, the soot portion being inclined at a second angle relative to the vertical axis, and The undercut outlet is arranged at the rear end of the smoke part, and the undercut outlet has an upper lip, which shields fluid or debris to prevent the fluid or debris from entering the exhaust component through the undercut outlet.

2. The exhaust assembly according to claim 1, characterized in that The second angle is greater than the first angle.

3. The exhaust assembly according to claim 1, characterized in that The inclination direction of the smoke part and the inclination direction of the lifting part are arranged along the same plane.

4. The exhaust assembly according to any one of claims 1 to 3, characterized in that: Also included is a muffler outlet pipe bend configured to receive the exhaust gas in the direction of the vertical axis and direct the exhaust gas to exit the muffler outlet pipe bend in the inclined direction of the lift portion.

5. The exhaust assembly according to any one of claims 1 to 3, characterized in that: The tail pipe includes a lift portion bent portion disposed between the lift portion and the soot portion, wherein the lift portion bent portion is bent to receive exhaust gas traveling in an inclined direction of the lift portion, and the lift portion bent portion is configured to guide the exhaust gas to leave the lift portion bent portion in the inclined direction of the soot portion.

6. The exhaust assembly according to any one of claims 1 to 3, characterized in that: The undercut outlet further includes a lower lip portion disposed below the upper lip portion, the lower lip portion being recessed into the smoke portion such that the upper lip portion shields the lower lip portion to prevent fluid or debris from falling into the smoke portion.

7. The exhaust assembly according to any one of claims 1 to 3, characterized in that: The tail pipe does not include a fluid discharge device.

8. A transportation power system for providing power during transportation, the transportation power system comprising: a prime mover having an engine exhaust outlet configured to release exhaust gas; and An exhaust assembly connected to the engine exhaust outlet, the exhaust assembly comprising a tail pipe, the tail pipe comprising: a lift portion inclined at a first angle relative to a vertical axis of the exhaust assembly, the lift portion being configured to receive exhaust gas; a soot portion connected to the lift portion and configured to receive the exhaust gas from the lift portion, the soot portion being inclined at a second angle relative to the vertical axis; and An undercut outlet is disposed at the rear end of the smoke section, wherein the undercut outlet has an upper lip portion, and the upper lip portion shields fluid or debris to prevent the fluid or debris from entering the exhaust assembly through the undercut outlet.

9. The transportation power system according to claim 8, characterized in that: The second angle is greater than the first angle.

10. The transportation power system according to claim 8, characterized in that: The inclination direction of the smoke part and the inclination direction of the lifting part are arranged along the same plane.

11. The transportation power system according to any one of claims 8 to 10, characterized in that: Also included is a muffler outlet pipe bend that receives the exhaust gas in the direction of the vertical axis and guides the exhaust gas to exit the muffler outlet pipe bend in the inclined direction of the lift portion.

12. The transportation power system according to any one of claims 8 to 10, characterized in that: The tail pipe includes a lift portion bent portion disposed between the lift portion and the soot portion, wherein the lift portion bent portion is bent to receive exhaust gas traveling in an inclined direction of the lift portion, and the lift portion bent portion is configured to guide the exhaust gas to leave the lift portion bent portion in the inclined direction of the soot portion.

13. The transportation power system according to any one of claims 8 to 10, characterized in that: The undercut outlet further includes a lower lip portion disposed below the upper lip portion, the lower lip portion being recessed into the smoke portion such that the upper lip portion shields the lower lip portion to prevent fluid or debris from falling into the smoke portion.

14. The transportation power system according to any one of claims 8 to 10, characterized in that: The tail pipe does not include a fluid discharge device.

15. The transportation power system according to any one of claims 8 to 10, characterized in that: The prime mover is configured to generate power for a transportation climate control system.

16. The transportation power system according to any one of claims 8 to 10, characterized in that: The prime mover is configured to generate power for the auxiliary power unit.

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