CN113790100A - Diesel power generation unit and hybrid vehicle - Google Patents
Diesel power generation unit and hybrid vehicle Download PDFInfo
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- CN113790100A CN113790100A CN202110962566.2A CN202110962566A CN113790100A CN 113790100 A CN113790100 A CN 113790100A CN 202110962566 A CN202110962566 A CN 202110962566A CN 113790100 A CN113790100 A CN 113790100A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10255—Arrangements of valves; Multi-way valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention relates to a diesel power generation unit and a hybrid vehicle. The diesel power generation unit comprises a variable altitude self-adaptive module, a power module and a power generation module; the altitude-variable self-adaptive module has two working modes and comprises a first air passage, a second air passage and an electric air compressor arranged on the first air passage, wherein when the altitude-variable self-adaptive module is in the first working mode, external air enters the electric air compressor through the first air passage for pressurization and flows to the power module after being pressurized, and when the altitude-variable self-adaptive module is in the second working mode, the external air flows to the power module through the second air passage; the power module can work by utilizing external gas or the external gas pressurized by the electric air compressor, and then the power module is driven to generate power. The diesel power generation unit does not need to be matched with an engine, and has the characteristics of energy-saving potential and good control flexibility.
Description
Technical Field
The invention relates to the technical field of power generation, in particular to a diesel power generation unit and a hybrid vehicle.
Background
The diesel generator module is a core part for realizing low oil consumption, high reliability, light weight and modularization of the hybrid vehicle. When the diesel generator module works in a plateau area, the atmospheric pressure is reduced along with the rise of the altitude, and if the air inlet is not pressurized enough, the power of the generator is greatly reduced, so that the output power of the diesel engine power module is reduced. For example, for a conventional diesel engine with one-stage exhaust turbocharging, at an altitude of around 4000m, the atmospheric pressure is about 0.61Bar, and its power will be reduced to around 70% of the plain power (atmospheric pressure of about 1 Bar).
From traditional diesel engine supercharging technology, adopt two grade exhaust gas turbocharging can realize the plateau output power of engine and resume, but because exhaust gas turbocharging needs to carry out the matching design to the operational environment of engine, so be difficult to satisfy the air intake demand of engine in plain area and plateau area simultaneously. If the design matching point of the two-stage supercharging is selected to be the plateau area environment, the problem of overhigh intake pressure exists when the engine works in the plateau area.
In order to solve the problems, an adjustable two-stage exhaust gas turbocharging technology is generally adopted at present, namely, one-stage supercharging is adopted when the plateau works, and two-stage supercharging is adopted when the plateau works to realize output power recovery. However, the energy saving potential and control flexibility of this method are still poor because exhaust turbocharging still needs to be matched with the engine, and the method can not realize the recovery of the drag braking power.
Disclosure of Invention
In view of the above, it is desirable to provide a diesel power generation unit and a hybrid vehicle.
A diesel powered electrical generating unit, the diesel powered electrical generating unit comprising: the system comprises a variable altitude self-adaptive module, a power module and a power generation module;
the altitude-variable self-adaptive single device has two working modes and comprises: the air conditioner comprises a first air passage, a second air passage and an electric air compressor arranged on the first air passage, wherein when the altitude-variable self-adaptive module is in a first working mode, external air enters the electric air compressor through the first air passage to be pressurized and flows to the power module after being pressurized, and when the altitude-variable self-adaptive module is in a second working mode, the external air flows to the power module through the second air passage;
the power module can work by utilizing the external gas or the external gas pressurized by the electric air compressor, and then the power module is driven to generate power.
In one embodiment, the elevation varying adaptation module further comprises: the controller is electrically connected with the electric air compressor, and the first sensor and the selective valve are electrically connected with the controller;
the first sensor is used for acquiring and sending the pressure of the external gas to the controller;
the controller is used for controlling the option valve to open or close the first air channel and the second air channel and controlling the electric air compressor to open or close based on the pressure of the outside air.
In one embodiment, the elevation varying adaptation module further comprises: a second sensor electrically connected to the controller;
the second sensor is used for acquiring and sending the pressure of the external air pressurized by the electric air compressor to the controller;
the controller is further configured to control a rotation speed of the electric air compressor based on the pressure of the external air and the pressure of the external air pressurized by the electric air compressor.
In one embodiment, the elevation varying adaptation module further comprises: the controller is electrically connected with the electric air compressor, and the third sensor and the gate valve are electrically connected with the controller;
the third sensor is used for acquiring and sending the pressure of the external air pressurized by the electric air compressor to the controller;
the controller is used for judging whether the external air is pressurized or not based on the working state of the electric air compressor and the pressure of the external air pressurized by the electric air compressor, if so, the selected valve is controlled to open the first air passage and close the second air passage, otherwise, the selected valve is controlled to close the first air passage, open the second air passage and close the electric air compressor.
In one embodiment, the controller is further electrically connected to the power generation module, and the power generation module is used for supplying power to the controller.
In one embodiment, the controller is also electrically connected to an external power source for supplying power to the controller.
In one embodiment, the elevation varying adaptation module further comprises: an air filter located upstream of the gate valve.
In one embodiment, the elevation varying adaptation module further comprises: the first intercooler is arranged on the first air outlet channel and located at the downstream of the air outlet end of the electric air compressor.
In one embodiment, the diesel powered electrical generating unit further comprises an exhaust treatment module disposed at an exhaust end of the power module.
A hybrid vehicle comprising a diesel powered electric power generating unit of any preceding claim.
According to the diesel power generation unit and the hybrid vehicle, the external gas is pressurized through the electric air compressor of the variable altitude self-adaptive module, so that the air inflow of the power module is ensured, on the one hand, the forward plateau power recovery of the diesel power generation unit can be conveniently and efficiently realized, and the output power of the diesel power generation unit in a plateau area is close to the output power of the plateau area and is generally more than 90% of the output power of the plateau area; on the second hand, the recovery of reverse braking power of the diesel power generation unit, namely the recovery of the towing braking capacity, can be conveniently and efficiently realized; in the third aspect, the first air channel and the second air channel can be switched to be opened and closed, so that the problem that the conventional two-stage exhaust gas turbocharging is difficult to meet the air inlet requirements of an engine in a diesel power generation unit in plain areas and plateau areas can be solved, the fast switching between the plain areas and the plateau areas can be realized, the structure is simple, the reliability is high, and different altitude environments can be stably compatible; compared with the existing scheme of using adjustable two-stage exhaust gas turbocharging, the method has the advantages that the air turbocharging is not restricted by the working state of the engine, can be flexibly adjusted according to different performance targets, and has stronger control flexibility and larger energy-saving potential; in the fifth aspect, the altitude-variable self-adaptive module has no coupling relation with the existing gas supply system, does not need to perform special adjustment and matching on the gas supply system, and is wide in application range and simple and convenient to apply.
Drawings
Fig. 1 is a schematic structural diagram of a diesel power generation unit according to an embodiment of the present invention;
FIG. 2 is a schematic view illustrating the flow of internal gases of a diesel powered electrical generating unit in a plateau region according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal gas flow of a diesel powered electrical power generating unit provided in an embodiment of the present invention in a plain area;
FIG. 4 is a schematic structural diagram of a diesel powered electrical generating unit according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a diesel power generation unit according to another embodiment of the present invention.
Wherein the reference numerals in the drawings are as follows:
100. a variable altitude adaptive module; 111. a first air passage; 112. a second air passage; 120. an electric air compressor; 130. a controller; 140. a first sensor; 150. a gate valve; 160. a second sensor; 170. a third sensor; 180. an air cleaner; 190. a first intercooler; 200. a power module; 210. an exhaust gas turbocharger; 220. a diesel engine; 230. a second intercooler; 240. an EGR valve; 250. an EGR intercooler; 300. a power generation module; 400. a tail gas treatment module; A. an external device; B. an external power source.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
An embodiment of the present invention provides a diesel power generation unit, as shown in fig. 1 to 5, including: the system comprises a variable altitude self-adapting module 100, a power module 200 and a power generation module 300; the variable altitude adaptation module 100 has two modes of operation and includes: the air conditioner comprises a first air passage 111, a second air passage 112 and an electric air compressor 120 arranged on the first air passage 111, wherein when the altitude-variable adaptive module 100 is in a first working mode, part of air enters the electric air compressor 120 through the first air passage 111 to be pressurized and flows to a power module 200 after being pressurized, and when the altitude-variable adaptive module 100 is in a second working mode, outside air flows to the power module 200 through the second air passage 112; the power module 200 can operate by using external air or external air pressurized by the electric air compressor 120, and then drive the power generation module 300 to generate power.
The diesel power generation unit can be applied to a hybrid vehicle. When the vehicle runs in a plateau area, the working mode of the altitude-variable self-adaptive module 100 of the diesel power generation unit can be adjusted to a first working state; the operating mode of the variable altitude adaptation module 100 may be adjusted to a second operating mode when the vehicle is traveling in a flat spot area.
As an example, as shown in fig. 1 to 5, the power module 200 includes: an exhaust turbocharger 210, a diesel engine 220; the exhaust turbocharger 210 has an air inlet end, an air outlet end, an air return end, and an air outlet end, the air inlet end of the exhaust turbocharger 210 is communicated with the outlets of the first air passage 111 and the second air passage 112, the air outlet end of the exhaust turbocharger 210 is communicated with the air inlet end of the diesel engine 220, and the air return end of the exhaust turbocharger 210 is communicated with the air outlet end of the diesel generator 200. Optionally, the power module 200 further comprises a second intercooler 230 in communication between the outlet end of the exhaust gas turbocharger 210 and the inlet end of the diesel engine 220. The second intercooler 230 is configured to reduce the temperature of the pressurized high-temperature air to reduce the heat load of the diesel engine 220, increase the intake air amount, and further increase the power of the diesel engine 220. Optionally, the power module 200 further comprises an EGR (Exhaust Gas recirculation) valve, an EGR intercooler 250, in turn communicating between the outlet of the second intercooler 230 and the outlet of the diesel engine 220. EGR valve 240, EGR intercooler 250, for increasing the power of diesel engine 220.
As one example, the power generation module 300 includes a generator. Alternatively, as shown in fig. 1 to 5, the power generation module 300 may be electrically connected to the external device a.
As an example, a first air intake pipeline and a second air intake pipeline are disposed on the diesel power generation unit, a tube cavity of the first air intake pipeline constitutes the first air intake passage 111 and the electric air compressor 120 is disposed on the first air intake pipeline, and a tube cavity of the second air intake pipeline constitutes the second air intake passage 112.
According to the diesel power generation unit, the external gas is pressurized through the electric air compressor 120 of the variable altitude self-adaptive module 100, so that the air inflow entering the power module 200 is ensured, on the one hand, the forward plateau power recovery of the diesel power generation unit can be conveniently and efficiently realized, and the output power of the diesel power generation unit in a plateau area is close to the output power of the plateau area and is generally more than 90% of the output power of the plateau area; on the second hand, the recovery of reverse braking power of the diesel power generation unit, namely the recovery of the towing braking capacity, can be conveniently and efficiently realized; in the third aspect, the first air channel 111 and the second air channel 112 can be switched to open and close, so that the problem that the conventional two-stage exhaust gas turbocharging cannot meet the air inlet requirements of an engine in a diesel power generation unit in plain areas and plateau areas is solved, the fast switching between the plain areas and the plateau areas is realized, the structure is simple, the reliability is high, and the stable compatibility with different altitude environments can be realized; compared with the existing scheme of using adjustable two-stage exhaust gas turbocharging, the method has the advantages that the air turbocharging is not restricted by the working state of the engine, can be flexibly adjusted according to different performance targets, and has stronger control flexibility and larger energy-saving potential; in the fifth aspect, the altitude-variable adaptive module 100 also has no coupling relationship with the existing gas supply system, and does not need to perform special adjustment and matching on the gas supply system, so that the application range is wide, and the application is simple and convenient.
As to how to switch the opening and closing of the first air passage 111 and the second air passage 112, the embodiment of the present invention provides two ways:
in type (1), as shown in fig. 1 to 3 and 5, the elevation varying adaptive module 100 further includes: a controller 130 electrically connected to the electric air compressor 120, a first sensor 140 electrically connected to the controller 130, and a selector valve 150; the first sensor 140 is used to acquire and send the pressure of the external gas to the controller 130; the controller 130 is configured to control the selector valve 150 to open or close the first gas passage 111 and the second gas passage 112 and to control the electric air compressor 120 to open or close based on the pressure of the external air. When the hybrid vehicle is in the plateau area, the controller 130 may determine that the external air needs to be pressurized through the information transmitted by the first sensor 140, and at this time, the electric air compressor 120 is activated and the selective valve 150 is controlled to open the first air passage 111 and close the second air passage 112, so that the external air is pressurized by the electric air compressor 120 and then flows to the power module 200. When the hybrid vehicle travels in the flat spot area, the controller 130 may determine that the external air is not required to be pressurized by the information transmitted from the first sensor 140, and then turn off the electric air compressor 120 and control the selector valve 150 to open the second air passage 112 and close the first air passage 111, so that the external air directly flows to the power module 200 again.
Alternatively, as shown in fig. 1 to 5, an intake line 113 is communicated with a meeting area between the intake ends of the first air path 111 and the second air path 112, the first sensor 140 is disposed on the intake line 113, and the selective valve 150 is disposed at the meeting area between the intake ends of the first air path 111 and the second air path 112.
Optionally, the first sensor 140 is a pressure sensor.
As for the power utilization mode of the controller 130, two modes are given, the first mode is that, as shown in fig. 2, the controller 130 is further electrically connected with a power generation module 300, and the power generation module 300 is used for supplying power to the controller 130; second, as shown in fig. 5, the controller 130 is electrically connected to an external power source B for supplying power to the controller 130. When the controller is applied, the power utilization mode of the controller 130 can be selected according to specific situations. Of course, the power utilization of the first sensor 140 and the gate valve 150 may also be the same as the power utilization of the controller 130, and will not be described herein.
Further, as shown in fig. 1 to 3 and 5, the variable altitude adaptation module 100 further includes: a second sensor 160 electrically connected to the controller 130; the second sensor 160 is used to acquire and send the pressure of the external air pressurized by the electric air compressor 120 to the controller 130; the controller 130 is also configured to control the rotation speed of the electric air compressor 120 based on the pressure of the external air and the pressure of the external air pressurized by the electric air compressor 120. When the controller 130 determines that the pressure of the external air pressurized by the electric air compressor 120 is too high through the information transmitted by the second sensor 160, the rotational speed of the electric air compressor 120 is reduced to reduce the pressure of the external air pressurized by the electric air compressor 120; when the controller 130 determines that the pressure of the external air pressurized by the electric air compressor 120 is too low through the information transmitted from the second sensor 160, the rotational speed of the electric air compressor 120 is increased to increase the pressure of the external air pressurized by the electric air compressor 120. The cooperation of the first sensor 140 and the second sensor 160 enables the pressurization loop of the electric air compressor 120 to be an independent pressure closed-loop control system.
Optionally, the second sensor 160 is a pressure sensor. The second sensor 160 is powered in the same manner as the controller 130, and therefore, the power consumption is not described herein. Optionally, as shown in fig. 1 to 5, an air outlet line 114 is connected to a meeting area between air outlet ends of the first air outlet passage 111 and the second air outlet passage 112, and the second sensor 160 is disposed on the air outlet line 114.
In the (2) th mode, as shown in fig. 4, the variable altitude adaptation module 100 further includes: a controller 130 electrically connected to the electric air compressor 120, a third sensor 170 electrically connected to the controller 130, and a selector valve 150; the third sensor 170 is used to acquire and send the pressure of the external air flowing through the electric air compressor 120 to the controller 130; the controller 130 is configured to determine whether the external air needs to be pressurized based on the working state of the electric air compressor 120 and the pressure of the external air pressurized by the electric air compressor 120, if so, control the selective valve 150 to open the first air passage 111 and close the second air passage 112, otherwise, control the selective valve 150 to close the first air passage 111, open the second air passage 112, and close the electric air compressor 120. The working state of the air compressor can be determined according to the voltage, current, power and other parameters of the electric air compressor 120, so that the pressure of the external air is reversely calculated according to the working state of the electric air compressor 120 and the pressure of the external air flowing through the electric air compressor 120, and whether the external air needs to be pressurized can be determined, if yes, the electric air compressor 120 is opened, the selection valve 150 is controlled to open the first air passage 111 and close the second air passage 112, otherwise, the electric air compressor 120 is closed, the selection valve 150 is controlled to close the first air passage 111 and open the second air passage 112.
The structure and the power consumption of the controller 130 and the third sensor 170 are respectively the same as those of the controller 130 and the second sensor 160 in the above-mentioned mode (1), and the power consumption of the gate valve 150 may also be the same as that of the gate valve 150 in the above-mentioned mode (1), which is not described herein again.
In two ways based on how to switch the opening and closing of the first air passage 111 and the second air passage 112, in some embodiments of the present invention, as shown in fig. 1 to 5, the variable altitude adaptive module 100 further includes: and an air cleaner 180, the air cleaner 180 being located upstream of the selector valve 150. The air filter 180 plays a role in filtering dust and sand in the air, and ensures that sufficient and clean air enters the power module.
Optionally, an air filter 180 is disposed on the intake line 113 and is distributed in the gas flow direction in sequence with the first sensor 140.
In two ways based on how to switch the opening and closing of the first air passage 111 and the second air passage 112, in some embodiments of the present invention, as shown in fig. 1 to 5, the variable altitude adaptive module 100 further includes: the first intercooler 190, the first intercooler 190 is disposed on the first air passage 111 and located downstream of the air outlet end of the electric air compressor 120. The first intercooler 190 is used to reduce the temperature of the pressurized high-temperature air to reduce the heat load of the power module 200, increase the intake air amount, and further increase the power of the power module 200. Wherein the pressure of the air pressurized by the electric air compressor 120 and cooled by the first intercooler 190 is generally controlled to be one atmosphere.
In some embodiments of the present invention, as shown in fig. 1-5, the diesel powered electrical generating unit further comprises an exhaust treatment module 400, the exhaust treatment module 400 being disposed at an exhaust end of the power module 200. The exhaust gas treatment module 400 reduces the degree of atmospheric pollution from the exhaust gas released by the diesel powered electrical generating unit.
The operation of the diesel-powered power generation unit will be described below by taking the example that the variable altitude adaptive module 100 includes the first sensor 140 and the second sensor 160:
when the hybrid vehicle runs in a plateau area, as shown in fig. 2, outside air is filtered by the air filter 180, is gated by the gate valve 150, enters the electric air compressor 230 through the first air passage 111, is pressurized, and is cooled by the first intercooler 190; the supercharged external air is supercharged by the exhaust gas turbocharger 210, cooled by the second intercooler 230 after supercharging, and finally enters the diesel engine 220.
When the hybrid vehicle travels in a plain area, as shown in fig. 3, the external air is filtered by the air filter 180, is gated by the gate valve 150, then enters the exhaust gas turbocharger 210 through the second air passage 112 to be pressurized, is cooled by the second intercooler 230 after being pressurized, and finally enters the diesel engine 220.
In conclusion, the diesel power generation unit can efficiently recover the plateau power of the diesel power generation unit. The plateau power recovery effect of the present invention is as follows. The gas pressure after intercooling is controlled to be 1Bar, and the output power of the diesel power generation module 300 after the plateau power recovery function is started can be calculated. Because the diesel engine is used for driving the generator to generate electricity, the diesel engine can continuously work in a high-load and high-efficiency state, and the assumed efficiency is 35 percent and the air-fuel ratio is 17. The output power of the diesel engine is 330kW, the efficiency of the power generation module is 91%, the efficiency of the electric air compressor 120 motor is 95%, the efficiency of the pump head is 70%, and the efficiency of the air compressor controller 130 is 98%. The intercooler air pressure loss is about 2-3 kPa. It can be calculated that the output power of the diesel power generation unit is 300kW when the diesel power generation unit works in plain areas (atmospheric pressure 1Bar, plateau power recovery function is not enabled). Plateau power recovery is carried out in plateau areas with altitudes of 2000m, 3000m, 4000m and 5000m respectively, the consumed power of the altitude-variable self-adaptive module is about 11.3kW, 16.9kW, 24.8kW and 31.2kW respectively, the output power of the diesel power generation unit is about 288.7kW, 283.1kW, 275.2kW and 268.8kW respectively, and the power recovery is 96.2%, 94.3%, 91.7% and 89.6% of the work of plain areas. The air input of the diesel engine can be calculated through the efficiency of the diesel engine, the air-fuel ratio and the heat value of diesel oil, the pressure of outside air under different altitudes is different, the power required to do work on the air can be obtained through the pressure of air before and after pressurization and the air input, and the power consumed by the variable-altitude self-adaptive module can be calculated through the pump head efficiency of the air compressor, the motor efficiency of the air compressor and the controller efficiency of the air compressor.
Another embodiment of the invention provides a hybrid vehicle including the diesel-powered electric power generation unit described in any one of the above.
In the hybrid vehicle, the external air is pressurized by the electric air compressor 120 of the variable altitude adaptive module 100, so that the air inflow of the power module 200 is ensured, on the one hand, the forward plateau power recovery of the diesel power generation unit can be conveniently and efficiently realized, and the output power of the diesel power generation unit in the plateau area is close to the output power in the plain area and is generally more than 90% of the output power in the plain area; on the second hand, the recovery of reverse braking power of the diesel power generation unit, namely the recovery of the towing braking capacity, can be conveniently and efficiently realized; in the third aspect, the first air channel 111 and the second air channel 112 can be switched to open and close, so that the problem that the conventional two-stage exhaust gas turbocharging cannot meet the air inlet requirements of an engine in a diesel power generation unit in plain areas and plateau areas is solved, the fast switching between the plain areas and the plateau areas is realized, the structure is simple, the reliability is high, and the stable compatibility with different altitude environments can be realized; compared with the existing scheme of using adjustable two-stage exhaust gas turbocharging, the method has the advantages that the air turbocharging is not restricted by the working state of the engine, can be flexibly adjusted according to different performance targets, and has stronger control flexibility and larger energy-saving potential; in the fifth aspect, the altitude-variable adaptive module 100 also has no coupling relationship with the existing gas supply system, and does not need to perform special adjustment and matching on the gas supply system, so that the application range is wide, and the application is simple and convenient.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A diesel powered electrical generating unit, characterized in that the diesel powered electrical generating unit comprises: the system comprises a variable altitude self-adapting module (100), a power module (200) and a power generation module (300);
the variable altitude adaptation module (100) has two modes of operation and comprises: a first air channel (111), a second air channel (112), and an electric air compressor (120) disposed on the first air channel (111), wherein when the altitude-varying adaptive module (100) is in a first operation mode, external air enters the electric air compressor (120) through the first air channel (111) to be pressurized and then flows to the power module (200), and when the altitude-varying adaptive module (100) is in a second operation mode, the external air flows to the power module (200) through the second air channel (112);
the power module (200) can work by using the external gas or the external gas pressurized by the electric air compressor (120), and then drives the power generation module (300) to generate power.
2. The diesel powered power generation unit of claim 1, wherein the variable altitude adaptation module (100) further comprises: a controller (130) electrically connected with the electric air compressor (120), a first sensor (140) electrically connected with the controller (130), and a gate valve (150);
the first sensor (140) is used for acquiring and sending the pressure of the external gas to the controller (130);
the controller (130) is used for controlling the selective valve (150) to open or close the first air channel (111), the second air channel (112) and the electric air compressor (120) based on the pressure of the external air.
3. The diesel powered power generation unit of claim 2, wherein the variable altitude adaptation module (100) further comprises: a second sensor (160) electrically connected to the controller (130);
the second sensor (160) is used for acquiring and sending the pressure of the external air pressurized by the electric air compressor (120) to the controller (130);
the controller (130) is further configured to control a rotational speed of the electric air compressor (120) based on the pressure of the external air and the pressure of the external air pressurized by the electric air compressor (120).
4. The diesel powered power generation unit of claim 1, wherein the variable altitude adaptation module (100) further comprises: a controller (130) electrically connected with the electric air compressor (120), a third sensor (170) electrically connected with the controller (130), and a gate valve (150);
the third sensor (170) is used for acquiring and sending the pressure of the external air pressurized by the electric air compressor (120) to the controller (130);
the controller (130) is configured to determine whether to pressurize the external air based on a working state of the electric air compressor (120) and a pressure of the external air pressurized by the electric air compressor (120), and if so, control the selective valve (150) to open the first air passage (111) and close the second air passage (112), and otherwise control the selective valve (150) to close the first air passage (111), open the second air passage (112) and close the electric air compressor (120).
5. The diesel powered electrical generating unit of any of claims 2-4, wherein the controller (130) is further electrically connected to the power generating module (300), the power generating module (300) being configured to supply power to the controller (130).
6. The diesel powered electrical generating unit of any of claims 2-4, wherein the controller (130) is further electrically connected to an external power source (B) for supplying power to the controller (130).
7. The diesel powered power generation unit of any of claims 2-4, wherein the variable altitude adaptation module (100) further comprises: an air filter (180), the air filter (180) being located upstream of the gate valve (150).
8. The diesel powered power generation unit of claim 1, wherein the variable altitude adaptation module (100) further comprises: a first intercooler (190), the first intercooler (190) being disposed on the first air passage (111) and downstream of an air outlet end of the electric air compressor (120).
9. The diesel powered power generation unit of claim 1, further comprising an exhaust gas treatment module (400), the exhaust gas treatment module (400) being disposed at an exhaust end of the power module (200).
10. A hybrid vehicle characterized in that the hybrid vehicle includes the diesel-powered power generation unit according to any one of claims 1 to 9.
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