CN214273845U - Diesel engine cold start system and vehicle - Google Patents
Diesel engine cold start system and vehicle Download PDFInfo
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- CN214273845U CN214273845U CN202120412774.0U CN202120412774U CN214273845U CN 214273845 U CN214273845 U CN 214273845U CN 202120412774 U CN202120412774 U CN 202120412774U CN 214273845 U CN214273845 U CN 214273845U
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Abstract
The utility model relates to a diesel engine cold start system and vehicle, diesel engine cold start system includes that the fuel supplies unit and fuel electric heating assembly (1), the fuel supplies the unit and includes high-pressure oil rail (2), divides high pressure fuel pipe (3) and sprayer (4), high pressure fuel rail (2) pass through divide high pressure fuel pipe (3) with sprayer (4) intercommunication, fuel electric heating assembly (1) cladding in divide high pressure fuel pipe (3) for with divide the fuel in high pressure fuel pipe (3) to preheat to the fuel and preset the temperature. Through the technical scheme, the cold start system of the diesel engine can effectively shorten the cold start time of the diesel engine and achieve the purpose of quick start under the low-temperature condition.
Description
Technical Field
The disclosure relates to the technical field of diesel engines, in particular to a cold start system of a diesel engine and a vehicle.
Background
At ambient temperatures below-25 ℃, diesel engine start-up becomes exceptionally difficult. Because of the extremely poor volatility of diesel fuel below-25 c, the particulate state of diesel fuel injected into the cylinder from the injector at this low temperature condition is at least twice (presumably) greater than the particulate state at normal ambient temperature (e.g., 20 c), which is detrimental to ignition and ignition of the fuel particles. Therefore, how to rapidly start a diesel vehicle under low temperature (for example below-25 ℃) is an urgent problem to be solved in the industry.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the purpose of the present disclosure is to provide a cold start system of a diesel engine and a vehicle, wherein the cold start system of the diesel engine can effectively shorten the cold start time of the diesel engine, and achieve the purpose of quick start under a low temperature condition.
In order to achieve the above object, the present disclosure provides a cold start system for a diesel engine, where the cold start system for a diesel engine includes a fuel supply unit and a fuel electric heating assembly, the fuel supply unit includes a high-pressure fuel rail, a high-pressure fuel distribution pipe and a fuel injector, the high-pressure fuel rail is communicated with the fuel injector through the high-pressure fuel distribution pipe, and the fuel electric heating assembly is wrapped around the high-pressure fuel distribution pipe to preheat fuel in the high-pressure fuel distribution pipe to a fuel preset temperature.
Optionally, the diesel engine cold start system further comprises a first storage battery and a first controller, and the first controller is electrically connected with the first storage battery and the fuel oil electric heating assembly to control the power on and off of the fuel oil electric heating assembly.
Optionally, the diesel engine cold start system further includes a temperature sensor, the temperature sensor is disposed on the high-pressure oil distribution pipe and located between the fuel injector and the fuel electric heating assembly, and is used for detecting the fuel temperature in the high-pressure oil distribution pipe, the temperature sensor is in communication connection with the first controller, and the first controller is used for controlling the fuel electric heating assembly to be powered off when the fuel temperature reaches the preset fuel temperature.
Optionally, the diesel engine cold start system further comprises an engine oil electric heating assembly, and the engine oil electric heating assembly is arranged in the oil pan and used for preheating the engine oil in the oil pan to an engine oil preset temperature.
Optionally, an oil pipe communicating with the oil pan is provided with a motor oil pump.
Optionally, the diesel engine cold start system further includes a second storage battery and a second controller, and the second controller is electrically connected to the second storage battery, the engine oil electric heating assembly and the fuel oil electric heating assembly to control power on and off of the engine oil electric heating assembly or control power on and off of the engine oil electric heating assembly and the fuel oil electric heating assembly.
Optionally, the cold start-up system of diesel engine still includes machine oil temperature sensor, this machine oil temperature sensor set up in with the machine oil pipe of oil pan intercommunication is used for detecting the machine oil temperature in the machine oil pipe, and machine oil temperature sensor with second controller communication connection, the second controller is used for controlling machine oil electric heating element is in the machine oil temperature reaches the outage when the temperature is predetermine to machine oil.
Optionally, the cold start system of the diesel engine further includes an engine oil temperature sensor and a fuel oil temperature sensor, wherein the engine oil temperature sensor is disposed in an engine oil pipe communicated with the oil pan, is in communication connection with the second controller, and is used for detecting the temperature of engine oil in the engine oil pipe;
the fuel temperature sensor is arranged on the high-pressure oil distribution pipe, is positioned between the fuel injector and the fuel electric heating assembly and is used for detecting the fuel temperature in the high-pressure oil distribution pipe, and is in communication connection with the second controller;
the second controller is used for controlling the engine oil electric heating assembly to be powered off when the engine oil temperature reaches the engine oil preset temperature and controlling the fuel oil electric heating assembly to be powered off when the fuel oil temperature reaches the fuel oil preset temperature.
Optionally, the fuel electric heating assembly is an electric heating blanket; and/or the engine oil electric heating component is an electric heating wire.
Another aspect of the present disclosure also provides a vehicle including the diesel engine cold start system described above.
Through the technical scheme, the diesel engine cold start system provided by the disclosure utilizes the fuel oil electric heating assembly to pertinently preheat the high-pressure oil dividing pipe, and can achieve the purpose of quickly starting the diesel engine under the low-temperature condition. In specific work, the fuel oil electric heating assembly heats the high-pressure fuel pipe to improve the fuel oil performance, such as flowability, of fuel oil inside the fuel oil electric heating assembly, so that the atomization quality of the fuel oil sprayed out through the fuel injector is improved, and the purpose of quick starting under a low-temperature condition can be achieved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic block diagram illustrating the structure of a fuel supply unit and an electrical fuel heating assembly of a cold start system for a diesel engine according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic block diagram illustrating the structure of an oil lubrication unit and an oil electric heating assembly of a cold start system of a diesel engine as set forth in exemplary embodiments of the present disclosure;
FIG. 3 is a block diagram illustrating a cold start system of a diesel engine according to a first exemplary embodiment of the present disclosure;
fig. 4 is a block diagram schematically illustrating a structure of a cold start system of a diesel engine according to a second exemplary embodiment of the present disclosure.
Description of the reference numerals
1-a fuel oil electric heating assembly; 2-high pressure oil rail; 3-dividing a high-pressure oil pipe; 4-an oil injector; 5-a first battery; 6-a first controller; 7-a temperature sensor; 8-engine oil electric heating assembly; 9-oil pan; 10-engine oil pipe; 11-an electric oil pump; 12-a second battery; 13-a second controller; 14-engine oil temperature sensor; 15-fuel temperature sensor; 16-a main high pressure tubing; 17-high pressure oil pump.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the use of directional terms such as "inner and outer" refers to the inner and outer of the associated component profile, unless stated to the contrary. "first, second, etc. means that there is no ordering or importance in order to distinguish one element from another.
The present disclosure will be further described with reference to the accompanying drawings and detailed description.
According to a first aspect of the present disclosure, a diesel engine cold start system is provided. Referring to fig. 1, the cold start system of the diesel engine comprises a fuel supply unit and a fuel electric heating assembly 1, wherein the fuel supply unit comprises a high-pressure fuel rail 2, a high-pressure distribution fuel pipe 3 and a fuel injector 4, the high-pressure fuel rail 2 is communicated with the fuel injector 4 through the high-pressure distribution fuel pipe 3, and the fuel electric heating assembly 1 is coated on the high-pressure distribution fuel pipe 3 and used for preheating fuel in the high-pressure distribution fuel pipe 3 to a preset fuel temperature.
Through the technical scheme, namely the diesel engine cold start system provided by the disclosure, the aim of quickly starting the diesel engine under a low-temperature condition can be fulfilled by preheating the high-pressure fuel pipe 3 in a targeted manner by using the fuel oil electric heating assembly 1. In specific work, the fuel oil electric heating assembly 1 heats the high-pressure fuel pipe 3 to improve the fuel oil performance, such as flowability, of fuel oil inside the fuel oil electric heating assembly, so that the atomization quality of the fuel oil sprayed out through the fuel oil sprayer is improved, and the purpose of quick starting under a low-temperature condition can be achieved.
As shown in fig. 1, the fuel supply unit further includes a main high-pressure fuel pipe 16 and a high-pressure fuel pump 17, and the high-pressure fuel pump 17 is communicated with the high-pressure fuel rail 2 through the main high-pressure fuel pipe 16. In this way, fuel, i.e. diesel, is pumped via the high-pressure oil pump 17 in turn to the main high-pressure oil line 16, the high-pressure oil rail 2, the branch high-pressure oil line 3 and the injector 4, and finally injected via the injector 4 into the engine cylinder. The fuel oil electric heating assembly 1 is arranged on the high-pressure oil distributing pipe 3 closest to the fuel oil injector 4, so that fuel oil can be timely injected into an engine cylinder after being heated by the fuel oil electric heating assembly 1, and the fuel oil is prevented from being greatly cooled again under the influence of an external environment in the flowing process. Therefore, on one hand, the heating effect of the fuel oil electric heating assembly 1 on the fuel oil can be improved, and the atomization effect is better after the fuel oil is sprayed out; on the other hand, the electric energy consumed by the fuel oil electric heating assembly can be saved.
In some embodiments, referring to fig. 3, the diesel engine cold start system further includes a first storage battery 5 and a first controller 6, and the first controller 6 is electrically connected to both the first storage battery 5 and the fuel electric heating assembly 1 to control the power on and off of the fuel electric heating assembly 1. In this way, the first controller 6 can control the fuel electric heating assembly 1 to be powered on when the condition of starting fuel heating is met, and control the fuel electric heating assembly 1 to be powered off when the condition of closing fuel heating is met, so that the cold start time of the engine can be better shortened under the low-temperature condition.
In some embodiments, the first controller 6 may be an onboard controller (e.g., ECU). Thus, the condition for turning on the fuel heating may be set as: when the vehicle-mounted controller receives an engine starting signal and detects that the external environment is lower than a certain set temperature (for example-25 ℃), the fuel oil electric heating assembly 1 can be controlled to be electrified so as to heat the fuel oil. The vehicle-mounted controller can detect the external environment temperature, which is a mature prior art, and the principle of the vehicle-mounted controller is not repeated here.
In other specific embodiments, the first controller 6 may be an additionally provided controller (e.g., a single chip microcomputer), and in this case, the first controller 6, i.e., the single chip microcomputer, may be in communication connection with the onboard controller. When the condition of starting fuel oil heating is met, the vehicle-mounted controller can send a control signal to the first controller 6, and the first controller 6 controls the fuel oil electric heating assembly 1 to be electrified.
In order to set the off condition of the fuel electric heating assembly 1, in some embodiments, the diesel engine cold start system further includes a temperature sensor 7, the temperature sensor 7 is disposed on the high-pressure fuel distribution pipe 3 and between the fuel injector 4 and the fuel electric heating assembly 1, and is used for detecting the fuel temperature in the high-pressure fuel distribution pipe 3, the temperature sensor 7 is in communication connection with a first controller 6, and the first controller 6 is used for controlling the fuel electric heating assembly 1 to be powered off when the fuel temperature reaches the preset fuel temperature. Thus, the condition for turning off the fuel heating may be set to: when the temperature sensor 7 detects that the temperature of the fuel in the high-pressure fuel distribution pipe 3 reaches the preset temperature of the fuel, the first controller 6 controls the fuel electric heating assembly 1 to be powered off. The preset fuel temperature can be set to a certain temperature value of not higher than 100 ℃ for example, so that the fuel can obtain better atomization effect and the fuel cannot be too high in temperature.
In order to further shorten the cold start time of the diesel engine, in some embodiments, referring to fig. 2, the cold start system of the diesel engine further includes an oil electric heating assembly 8, and the oil electric heating assembly 8 is disposed in the oil pan 9 for preheating the oil in the oil pan 9 to an oil preset temperature. Since the oil passages are distributed around the combustion chambers (or cylinders) of the diesel engine, the heated oil is equivalent to "bathing" the engine when pumped by the oil pump to various lubrication locations. The applicant has found that the cold metal wall surface has a "trapping property" for fuel particles, and the fuel particles are not evaporated at all on the metal wall surface at this time, not to mention combustion. Based on this, the applicant researches and discovers that: even if the environment temperature is-35 ℃, the engine oil is heated, then the engine oil pump pumps the engine oil until the temperature of the wall surface of the combustion chamber is higher than-13 ℃, and the starter drags the engine to operate within 15 seconds, so that the engine can be started successfully. Therefore, the engine oil in the oil pan 9 is preheated to the preset temperature of the engine oil through the engine oil electric heating assembly 8, the cold starting time of the diesel engine can be effectively shortened, and the purpose of quick starting under the low-temperature condition is achieved.
Considering that the existing oil pumps are all gear type or sliding vane type oil pumps directly driven by a crankshaft, the oil at low temperature is viscous compared with the oil at normal temperature, and the oil pump driven by the crankshaft consumes the torque of the engine (equivalent to the torque loss of the engine). Therefore, in some embodiments, the motor oil pump 11 is provided on the oil pipe 10 that communicates with the oil pan 9. Thus, the engine can avoid the consumption of self torque caused by driving the gear type or sliding vane type oil pump. In addition, the applicant researches and discovers that the oil consumption of the whole vehicle is reduced after the motor oil pump is used. According to experiments carried out by a WLTC method in GB18352.6-2016 light vehicle pollutant emission limit and measurement method (sixth stage in China) required to be met by light-duty diesel vehicles (LDD), the oil consumption of the whole vehicle is reduced by 4%.
In some embodiments, referring to fig. 4, the diesel engine cold start system further includes a second battery 12 and a second controller 13, and the second controller 13 is electrically connected to the second battery 12, the engine oil electric heating assembly 8 and the fuel oil electric heating assembly 1 to control the power on and off of the engine oil electric heating assembly 8 or control the power on and off of the engine oil electric heating assembly 8 and the fuel oil electric heating assembly 1.
When the second controller 13 controls the power on or off of the oil electric heating assembly 8, the second controller 13 can control the oil electric heating assembly 8 to be powered on when the condition of starting the oil heating is met, and control the oil electric heating assembly 8 to be powered off when the condition of stopping the oil heating is met, so that the cold start time of the engine can be better shortened under the low-temperature condition.
In some embodiments, the second controller 13 may employ an onboard controller (e.g., ECU). Thus, the condition for turning on the oil heating may be set as: when the vehicle-mounted controller receives an engine starting signal and detects that the external environment is lower than a certain set temperature (for example-25 ℃), the oil electric heating assembly 8 can be controlled to be electrified so as to heat the oil. The vehicle-mounted controller can detect the external environment temperature, which is a mature prior art, and the principle of the vehicle-mounted controller is not repeated here.
In other specific embodiments, the second controller 13 may be an additional controller (e.g., a single chip microcomputer), and in this case, the second controller 13, i.e., the single chip microcomputer, may be in communication with the onboard controller. When the condition of starting engine oil heating is met, the vehicle-mounted controller can send a control signal to the second controller 13, and the second controller 13 controls the engine oil electric heating assembly 8 to be electrified.
In order to set the off condition of the oil electric heating assembly 8, in some embodiments, referring to fig. 4, the diesel engine cold start system further includes an oil temperature sensor 14, the oil temperature sensor 14 is disposed in an oil pipe 10 communicated with the oil pan 9 and is used for detecting the temperature of the oil in the oil pipe 10, and the oil temperature sensor 14 is in communication connection with a second controller 13, and the second controller 13 is used for controlling the oil electric heating assembly 8 to be powered off when the temperature of the oil reaches the preset temperature of the oil. Thus, the condition for turning off the oil heating may be set as: when the engine oil temperature sensor 14 detects that the engine oil temperature reaches the engine oil preset temperature, the second controller 13 controls the engine oil electric heating assembly to be powered off. Wherein, the preset temperature of the engine oil can be set to a certain temperature value of not higher than 100 ℃ for example, so as to prevent the quality deterioration caused by too high temperature of the engine oil.
When the second controller 13 controls the energization and the de-energization of the fuel electric heating assembly 8 and the fuel electric heating assembly 1, the second controller 13 can control the energization of the fuel electric heating assembly 1 and the engine oil electric heating assembly 8 when the condition of starting fuel and engine oil heating is met, and control the de-energization of the fuel electric heating assembly 1 and the engine oil electric heating assembly 8 when the condition of closing fuel and engine oil heating is met, so that the cold start time of the engine is better shortened under the low-temperature condition.
In some embodiments, the second controller 13 may employ an onboard controller (e.g., ECU). Thus, the conditions for turning on the fuel and oil heating may be set as follows: when the vehicle-mounted controller receives an engine starting signal and detects that the external environment is lower than a certain set temperature (for example-25 ℃), the fuel oil electric heating assembly 1 and the engine oil electric heating assembly 8 can be controlled to be electrified so as to heat the fuel oil and the engine oil. The vehicle-mounted controller can detect the external environment temperature, which is a mature prior art, and the principle of the vehicle-mounted controller is not repeated here.
In other specific embodiments, the second controller 13 may be an additional controller (e.g., a single chip microcomputer), and in this case, the second controller 13, i.e., the single chip microcomputer, may be in communication with the onboard controller. When the conditions of starting fuel oil and engine oil heating are met, the vehicle-mounted controller can send a control signal to the second controller 13, and the second controller 13 controls the fuel oil electric heating assembly 1 and the engine oil electric heating assembly 8 to be electrified.
In order to set the off condition of the oil electric heating assembly 1 and the oil electric heating assembly 8, in some embodiments, referring to fig. 4, the cold start system of the diesel engine further includes an oil temperature sensor 14 and a fuel temperature sensor 15, wherein the oil temperature sensor 14 is disposed in the oil pipe 10 communicated with the oil pan 9 and is in communication connection with the second controller 13 for detecting the temperature of the oil in the oil pipe 10;
the fuel temperature sensor 15 is arranged on the high-pressure oil distribution pipe 3 and between the fuel injector 4 and the fuel electric heating assembly 1 and used for detecting the fuel temperature in the high-pressure oil distribution pipe 3, and the fuel temperature sensor 15 is in communication connection with the second controller 13;
the second controller 13 is used for controlling the power-off of the oil electric heating assembly 8 when the temperature of the engine oil reaches the preset temperature of the engine oil and controlling the power-off of the fuel oil electric heating assembly 1 when the temperature of the fuel oil reaches the preset temperature of the fuel oil. Thus, the conditions for turning off the heating of the fuel and the engine oil may be set as: when the engine oil temperature sensor 14 detects that the engine oil temperature reaches the engine oil preset temperature and the fuel oil temperature sensor 15 detects that the fuel oil temperature reaches the fuel oil preset temperature, the second controller 13 controls the fuel oil electric heating assembly 1 and the engine oil electric heating assembly 8 to be powered off.
The fuel electric heating assembly 1 may be constructed in any suitable manner for the purpose of heating the fuel in the high pressure fuel line 3. Thus, in some embodiments, the fuel electric heating assembly 1 may be an electric heating blanket; therefore, the electric heating blanket is coated on the high-pressure oil distribution pipe 3, so that the aim of quickly heating fuel oil can be fulfilled, and the manufacturing cost can be reduced. Of course, in other embodiments, the fuel oil electric heating assembly 1 may also be configured as an electric heating wire spirally wound on the high-pressure fuel line, and the present disclosure does not specifically limit this.
The oil electric heating assembly 8 may be constructed in any suitable manner for the purpose of heating the oil in the oil pan 9. Thus, in some embodiments, the oil electric heating component (8) is an electric heating wire. Therefore, the purpose of quickly heating the engine oil can be achieved, and the manufacturing cost can be reduced.
According to a second aspect of the present disclosure, there is also provided a vehicle including the diesel engine cold start system described above.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. The cold starting system of the diesel engine is characterized by comprising a fuel supply unit and a fuel electric heating assembly (1), wherein the fuel supply unit comprises a high-pressure fuel rail (2), a high-pressure fuel pipe (3) and a fuel injector (4), the high-pressure fuel rail (2) is communicated with the fuel injector (4) through the high-pressure fuel pipe (3), and the fuel electric heating assembly (1) is coated on the high-pressure fuel pipe (3) to preheat fuel in the high-pressure fuel pipe (3) to a preset temperature.
2. The cold start system of the diesel engine according to claim 1, characterized in that the cold start system of the diesel engine further comprises a first storage battery (5) and a first controller (6), wherein the first controller (6) is electrically connected with the first storage battery (5) and the fuel oil electric heating assembly (1) to control the power on and off of the fuel oil electric heating assembly (1).
3. The cold start system of the diesel engine according to claim 2, characterized in that the cold start system of the diesel engine further comprises a temperature sensor (7), the temperature sensor (7) is disposed on the high-pressure fuel distribution pipe (3) and located between the fuel injector (4) and the electric fuel heating assembly (1) for detecting the temperature of the fuel in the high-pressure fuel distribution pipe (3), the temperature sensor (7) is in communication connection with the first controller (6), and the first controller (6) is used for controlling the electric fuel heating assembly (1) to be powered off when the temperature of the fuel reaches the preset temperature of the fuel.
4. The cold start system of a diesel engine according to claim 1, characterized in that it further comprises an oil electric heating assembly (8), said oil electric heating assembly (8) being arranged in an oil sump (9) for preheating the oil in the oil sump (9) to an oil preset temperature.
5. Cold start system for a diesel engine according to claim 4, characterized in that a motor oil pump (11) is arranged in the oil line (10) communicating with the oil sump (9).
6. The cold start system of the diesel engine according to claim 4, characterized in that the cold start system of the diesel engine further comprises a second storage battery (12) and a second controller (13), and the second controller (13) is electrically connected with the second storage battery (12), the oil electric heating assembly (8) and the oil electric heating assembly (1) to control the power on and off of the oil electric heating assembly (8) or the power on and off of the oil electric heating assembly (8) and the oil electric heating assembly (1).
7. The cold start system of a diesel engine according to claim 6, characterized in that the cold start system of a diesel engine further comprises an oil temperature sensor (14), the oil temperature sensor (14) is disposed in an oil pipe (10) communicated with the oil pan (9) and is used for detecting the temperature of the oil in the oil pipe (10), and the oil temperature sensor (14) is in communication connection with the second controller (13), and the second controller (13) is used for controlling the electric oil heating assembly (8) to be powered off when the temperature of the oil reaches the preset temperature of the oil.
8. The cold start system of a diesel engine according to claim 6, characterized in that it further comprises an oil temperature sensor (14) and a fuel temperature sensor (15), said oil temperature sensor (14) being arranged in an oil pipe (10) communicating with said oil pan (9) and being in communication connection with said second controller (13) for detecting the oil temperature in said oil pipe (10);
the fuel temperature sensor (15) is arranged on the high-pressure oil distribution pipe (3), is positioned between the fuel injector (4) and the fuel electric heating assembly (1) and is used for detecting the fuel temperature in the high-pressure oil distribution pipe (3), and the fuel temperature sensor (15) is in communication connection with the second controller (13);
the second controller (13) is used for controlling the engine oil electric heating assembly (8) to be powered off when the engine oil temperature reaches the engine oil preset temperature and controlling the fuel oil electric heating assembly (1) to be powered off when the fuel oil temperature reaches the fuel oil preset temperature.
9. The cold start system of a diesel engine according to any of the claims 4-8, characterized in that the fuel oil electric heating assembly (1) is an electric heating blanket; and/or the presence of a gas in the gas,
the engine oil electric heating component (8) is an electric heating wire.
10. A vehicle characterized by comprising a diesel engine cold start system according to any one of claims 1-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116085161A (en) * | 2022-12-28 | 2023-05-09 | 彩虹无人机科技有限公司 | Unmanned aerial vehicle power nacelle thermal management system and unmanned aerial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116085161A (en) * | 2022-12-28 | 2023-05-09 | 彩虹无人机科技有限公司 | Unmanned aerial vehicle power nacelle thermal management system and unmanned aerial vehicle |
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