Cold start preheating system and construction machinery

Abstract

The present invention relates to the field of engineering machinery, and discloses a cold start preheating system and engineering machinery. The cold start preheating system includes a fuel preheating module, an antifreeze preheating module, a hydraulic oil preheating module and a main controller. The main controller is configured to: after entering the preheating mode, control the fuel preheating module to start running; when it is determined that the fuel viscosity of the fuel tank is less than a first preset viscosity, control the antifreeze preheating module to start running; when it is determined that the temperature of the battery reaches a first preset temperature, control the hydraulic oil preheating module to start running. The cold start preheating system of the present invention has a short preheating time and a good preheating effect, which can improve the reliability of the engine's smooth cold start in extremely cold areas and shorten the user's waiting time. The cold start preheating system of the present invention can be applied to engineering machinery with a fuel architecture and a new energy architecture.

Description

Technical Field

[0001] The present invention belongs to the field of engineering machinery, and in particular, relates to a cold start preheating system and engineering machinery. Background Art

[0002] Current construction machinery, including traditional fuel-powered construction machinery (such as fuel cranes) and construction machinery that has developed to a certain scale with new energy construction (such as hybrid cranes), is more likely to experience engine failure in extremely cold areas due to fuel waxing, excessive viscosity of hydraulic oil, etc.

[0003] Existing construction machinery, whether fuel-powered or new energy-powered, is equipped with a preheating system, which preheats various parts of the construction machinery before the engine is started to solve the cold start problem of the engine in extremely cold environments. However, the existing preheating system has a long preheating time and poor preheating effect, which causes users to wait for a long time before starting, and in actual application, the engine is still more likely to fail to start smoothly. Summary of the invention

[0004] In view of the above-mentioned deficiencies or defects in the prior art, the present invention provides a cold start preheating system and engineering machinery, aiming to solve the technical problems of the long preheating time and poor preheating effect of the preheating system of the prior engineering machinery.

[0005] To achieve the above object, the present invention provides a cold start preheating system, which is applied to engineering machinery. The cold start preheating system comprises:

[0006] Batteries;

[0007] A fuel preheating module, used for preheating the fuel system of the engineering machinery;

[0008] an antifreeze preheating module, configured to heat the antifreeze inside the fuel tank of the fuel system through the fuel, and to preheat the battery and the engine of the engineering machinery respectively through the heated antifreeze;

[0009] A hydraulic oil preheating module, used for preheating the hydraulic system of the engineering machinery;

[0010] The main controller is electrically connected to the battery, and is respectively connected to the fuel preheating module, the antifreeze preheating module and the hydraulic oil preheating module for communication, and is configured as follows:

[0011] After entering the preheating mode, controlling the battery to energize the fuel preheating module so that the fuel preheating module starts to operate;

[0012] When it is determined that the fuel viscosity of the fuel tank is less than a first preset viscosity, controlling the battery to energize the antifreeze preheating module so that the antifreeze preheating module starts to operate;

[0013] When it is determined that the temperature of the battery reaches a first preset temperature, controlling the battery to energize the hydraulic oil preheating module so that the hydraulic oil preheating module starts to operate;

[0014] When it is determined that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity, the temperature of the battery is greater than or equal to the first preset temperature, the water temperature of the engine is greater than or equal to the second preset temperature, and the viscosity of the hydraulic oil of the hydraulic system is less than or equal to the third preset viscosity, an engine start signal is generated and issued.

[0015] Optionally, the fuel preheating module includes:

[0016] A fuel detection component, used for detecting the fuel viscosity of the fuel system;

[0017] A fuel heating component, used for heating the fuel system;

[0018] The first module controller is respectively connected to the fuel detection component, the fuel heating component and the master controller in communication, and is configured as follows:

[0019] When it is determined that the fuel viscosity of the fuel system is greater than a second preset viscosity, the fuel heating component is controlled to heat the fuel system, until it is determined that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity, the fuel heating component is controlled to stop;

[0020] When determining that the fuel viscosity of the fuel system is less than or equal to a second preset viscosity, providing feedback to the master controller;

[0021] When it is determined that the fuel viscosity of the fuel tank is less than a first preset viscosity, feedback is given to the master controller.

[0022] Optionally, the antifreeze liquid preheating module comprises:

[0023] a first antifreeze liquid circulation loop, used for heating the battery;

[0024] a second antifreeze circulation loop, used for heating the engine;

[0025] A battery temperature sensor, used to detect the temperature of the battery;

[0026] An engine water temperature sensor, used to detect the water temperature of the engine;

[0027] The second module controller is respectively connected to the first antifreeze circulation loop, the second antifreeze circulation loop, the battery temperature sensor and the engine water temperature sensor, and is configured as follows:

[0028] When determining that the temperature of the battery is greater than or equal to a first preset temperature, feeding back to the main controller;

[0029] When it is determined that the water temperature of the engine is greater than or equal to a second preset temperature, feeding back to the main controller;

[0030] When it is determined that the temperature of the battery is lower than a first preset temperature, the first antifreeze liquid circulation loop is controlled to heat the battery until the temperature of the battery is higher than or equal to the first preset temperature, and the first antifreeze liquid circulation loop is controlled to shut down;

[0031] When it is determined that the battery temperature is greater than or equal to the first preset temperature and the water temperature of the engine is less than the second preset temperature, the second antifreeze circulation loop is controlled to heat the engine until the water temperature of the engine is greater than or equal to the second preset temperature, and then the second antifreeze circulation loop is controlled to shut down.

[0032] Optionally, the hydraulic oil preheating module comprises:

[0033] A hydraulic oil detection component, used to detect the viscosity of the hydraulic oil in the hydraulic system;

[0034] A hydraulic oil heating assembly, used for heating the hydraulic system;

[0035] The third module controller is respectively connected to the hydraulic oil detection component, the hydraulic oil heating component and the main controller, and is configured as follows:

[0036] When it is determined that the viscosity of the hydraulic oil of the hydraulic system is greater than a third preset viscosity, the hydraulic oil heating component is controlled to heat the hydraulic system, and when it is determined that the viscosity of the hydraulic oil of the hydraulic system is less than or equal to the third preset viscosity, the hydraulic oil heating component is controlled to stop;

[0037] When it is determined that the viscosity of the hydraulic oil of the hydraulic system is less than or equal to a third preset viscosity, feedback is provided to the master controller.

[0038] Optionally, the cold start preheating system further includes an ambient temperature sensor for detecting ambient temperature and a master control switch, the master controller is communicatively connected to the ambient temperature sensor, and is electrically connected to the battery via the master control switch, and the master controller is configured as follows:

[0039] When it is determined that the ambient temperature is lower than the preset ambient temperature, a preheating mode is entered.

[0040] Optionally, the cold start preheating system also includes multiple module switches, the fuel preheating module, the antifreeze preheating module and the hydraulic oil preheating module are electrically connected to the battery through the multiple module switches respectively, and the main controller is communicatively connected to the multiple module switches.

[0041] Optionally, the cold start preheating system further includes:

[0042] A gearbox preheating module, used to preheat the gear oil of the gearbox of the engineering machinery;

[0043] A transfer case preheating module, used to preheat the gear oil of the transfer case of the engineering machinery;

[0044] Wherein, the master controller is respectively connected to the transmission preheating module and the transfer case preheating module in communication, and is configured as follows:

[0045] After the engine startable signal is generated and sent, the battery is controlled to energize the transmission preheating module and the transfer case preheating module respectively so that the transmission preheating module and the transfer case preheating module start to operate.

[0046] Optionally, the gearbox preheating module includes:

[0047] A gearbox heater, used for heating the gear oil of the gearbox;

[0048] A gearbox viscosity sensor, used to detect the gear oil viscosity of the gearbox;

[0049] The fourth module controller is respectively connected to the transmission heater, the transmission viscosity sensor and the master controller, and is configured as follows:

[0050] When it is determined that the gear oil viscosity of the gearbox is greater than a fourth preset viscosity, the gearbox heater is controlled to heat the gear oil of the gearbox, until it is determined that the gear oil viscosity of the gearbox is less than or equal to the fourth preset viscosity, the gearbox heater is controlled to stop;

[0051] When it is determined that the gear oil viscosity of the gearbox is less than or equal to a fourth preset viscosity, feedback is provided to the main controller.

[0052] Optionally, the transfer case preheating module includes:

[0053] A transfer case heater, used for heating the gear oil of the transfer case;

[0054] A transfer case viscosity sensor, used to detect the gear oil viscosity of the transfer case;

[0055] The fifth module controller is respectively connected to the transfer case heater, the transfer case viscosity sensor and the master controller, and is configured as follows:

[0056] When it is determined that the gear oil viscosity of the transfer case is greater than a fifth preset viscosity, the transfer case heater is controlled to heat the gear oil of the transfer case, and when it is determined that the gear oil viscosity of the transfer case is less than or equal to the fifth preset viscosity, the transfer case heater is controlled to stop;

[0057] When it is determined that the gear oil viscosity of the transfer case is less than or equal to a fifth preset viscosity, feedback is provided to the master controller.

[0058] Optionally, the master controller is configured as:

[0059] When it is determined that the gear oil viscosity of the transmission is less than or equal to a fourth preset viscosity and when it is determined that the gear oil viscosity of the transfer case is less than or equal to a fifth preset viscosity, a drivable signal is generated and issued.

[0060] Optionally, the cold start preheating system further comprises a cab preheating module for preheating the cab of the engineering machinery, and the master controller is communicatively connected to the cab preheating module and is configured as follows:

[0061] After generating and issuing an engine startable signal and receiving a cab preheating instruction input by a user, the battery is controlled to energize the cab preheating module to start the cab preheating module, and when it is determined that the indoor temperature of the cab is greater than or equal to a preset indoor temperature, an indoor preheating completion signal is generated and issued.

[0062] Optionally, the cab preheating module includes:

[0063] A warm air heater, used for supplying warm air into the cab;

[0064] A cab temperature sensor, used to detect the indoor temperature of the cab;

[0065] The sixth module controller is respectively connected to the warm air heater, the cab temperature sensor and the master controller in communication, and is configured as follows:

[0066] When it is determined that the indoor temperature of the cab is lower than a preset indoor temperature, the warm air heater is controlled to supply warm air into the cab so that the indoor temperature of the cab is maintained at a level greater than or equal to the preset indoor temperature;

[0067] When it is determined that the indoor temperature of the cab is greater than or equal to the preset indoor temperature, feedback is given to the main controller.

[0068] The present invention also provides an engineering machine, comprising the above-mentioned cold start preheating system.

[0069] Through the above technical scheme, when the cold start preheating system of the present invention is applied to engineering machinery, the main controller first starts the fuel preheating module after entering the preheating mode, so that the fuel preheating module preheats the fuel system of the engineering machinery. When it is determined that the fuel viscosity of the fuel tank is less than the first preset viscosity, the antifreeze preheating module is started, so that the antifreeze in the antifreeze preheating module is heated by the fuel in the fuel tank, and the battery and the engine of the engineering machinery are preheated respectively by the heated antifreeze. When it is determined that the temperature of the battery reaches the first preset temperature, the hydraulic oil preheating module is started, so that the hydraulic oil preheating module preheats the hydraulic system of the engineering machinery. In this way, Through the control of the main controller, the fuel preheating module, the antifreeze preheating module and the hydraulic oil preheating module can be operated in sequence and in coordination, which can quickly increase the temperature of the battery, avoid the problem of battery power loss when running at low temperatures, and ensure that the battery can provide sufficient power for the operation of each preheating module. In this way, the preheating effect of the cold start preheating system can be significantly improved and the preheating time of the cold start preheating system can be shortened, which can greatly improve the reliability of the smooth cold start of the engine in extremely cold areas and shorten the user's waiting time; in addition, the main controller generates and sends an engine startable signal, which can prompt the user that the preheating of each engine preheating module is completed and the engine can be started.

[0070] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0072] Figure 1 is a block diagram of a cold start preheating system in a specific embodiment of the present invention;

[0073] Figure 2 It is a structural schematic diagram of a cold start preheating system in a specific embodiment of the present invention;

[0074] Figure 3 It is a working flow chart of the cold start preheating system in a specific embodiment of the present invention.

[0075] Description of reference numerals:

[0076] 1 Battery

[0077] 2Fuel preheating module

[0078] 21 First module controller 22 Oil level sensor

[0079] 23 Fuel line heater 24 Filter viscosity sensor

[0080] 25 filter heater

[0081] 3 Antifreeze preheating module

[0082] 31 Second module controller 32 Engine water temperature sensor

[0083] 33 Battery temperature sensor 34 Battery heat exchanger

[0084] 35 Antifreeze heater 36 First control valve

[0085] 37 Engine heat exchanger 38 Second control valve

[0086] 4Hydraulic oil preheating module

[0087] 41 Third module controller 42 Hydraulic pump viscosity sensor

[0088] 43 Hydraulic oil tank heater 44 Hydraulic pipeline heater

[0089] 45 Hydraulic pump heater

[0090] 5. Master Controller

[0091] 6Ambient temperature sensor

[0092] 7. Master control switch

[0093] 8-module switch

[0094] 9 Transmission preheating module

[0095] 91 Fourth module controller 92 Transmission heater

[0096] 10 Transfer case preheating module

[0097] 101 Fifth module controller 102 Transfer case heater

[0098] 11 Cab preheating module

[0099] 111 sixth module controller 112 warm air heater

[0100] 113 Cab temperature sensor DETAILED DESCRIPTION

[0101] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0102] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0103] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0104] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0105] The present invention first provides a cold start preheating system, which is applied to construction machinery. Specifically, the construction machinery can be a traditional fuel-based construction machinery, such as a fuel crane, or a new energy-based construction machinery, such as a hybrid crane, a hybrid pump truck, etc.

[0106] In one embodiment, referring to the attached Figure 1 To Attachment Figure 3 As shown, the cold start preheating system includes:

[0107] Battery 1;

[0108] The fuel preheating module 2 is used to preheat the fuel system of the construction machinery;

[0109] The antifreeze preheating module 3 is configured to heat the antifreeze inside the fuel tank of the fuel system through the fuel, and is used to preheat the battery 1 and the engine of the engineering machinery respectively through the heated antifreeze;

[0110] A hydraulic oil preheating module 4 is used to preheat the hydraulic system of the construction machinery;

[0111] The main controller 5 is electrically connected to the battery 1, and is respectively connected to the fuel preheating module 2, the antifreeze preheating module 3 and the hydraulic oil preheating module 4 for communication, and is configured as follows:

[0112] After entering the preheating mode, the control battery 1 supplies power to the fuel preheating module 2 so that the fuel preheating module 2 starts to operate;

[0113] When it is determined that the fuel viscosity of the fuel tank is less than the first preset viscosity, the storage battery 1 is controlled to energize the antifreeze preheating module 3 so that the antifreeze preheating module 3 starts to operate;

[0114] When it is determined that the temperature of the battery 1 reaches the first preset temperature, the battery 1 is controlled to energize the hydraulic oil preheating module 4 so that the hydraulic oil preheating module 4 starts to operate;

[0115] When it is determined that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity, the temperature of the battery 1 is greater than or equal to the first preset temperature, the water temperature of the engine is greater than or equal to the second preset temperature, and the hydraulic oil viscosity of the hydraulic system is less than or equal to the third preset viscosity, an engine start signal is generated and issued.

[0116] When the cold start preheating system of the present embodiment is applied to engineering machinery with a fuel structure or an engineering machinery with a new energy structure, the main controller 5 first starts the fuel preheating module 2 after entering the preheating mode, so that the fuel preheating module 2 preheats the fuel system of the engineering machinery. When it is determined that the viscosity of the fuel in the fuel tank is less than the first preset viscosity, the antifreeze preheating module 3 is started, so that the antifreeze in the antifreeze preheating module 3 is heated by the fuel in the fuel tank, and the battery 1 and the engine of the engineering machinery are preheated respectively by the heated antifreeze. When it is determined that the temperature of the battery 1 reaches the first preset temperature, the hydraulic oil preheating module 4 is started, so that the hydraulic oil preheating module 4 preheats the hydraulic system of the engineering machinery. In this way, the fuel preheating module 2 and the antifreeze preheating module 3 are controlled by the main controller 5. The thermal module 3 and the hydraulic oil preheating module 4 operate in coordination in sequence, which can quickly increase the temperature of the battery 1, avoid the problem of battery 1 running out of power at low temperature, and ensure that the battery 1 can provide sufficient power for the operation of each preheating module. In this way, the preheating effect of the cold start preheating system can be significantly improved and the preheating time of the cold start preheating system can be shortened, which can greatly improve the reliability of the smooth cold start of the engine in extremely cold areas and shorten the waiting time of the user. In addition, the main controller 5 controls the start of the fuel preheating module 2, the antifreeze preheating module 3 and the hydraulic oil preheating module 4 according to the control logic, and the degree of intelligence is relatively high. In addition, the main controller 5 generates and sends an engine startable signal, which can prompt the user that the preheating of each engine preheating module is completed and the engine can be started.

[0117] In practical applications, the storage battery 1 may be a device independently provided for the cold start preheating system, or may be a storage battery carried by the engineering machinery itself.

[0118] In this embodiment, the master controller 5 can send an engine startable signal through a display device or a signal light or other prompting device to prompt the user that the engine meets the start conditions through a display or light prompt.

[0119] It can be understood that determining that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity means determining that the fuel viscosity of the fuel tank, fuel pipeline and filter of the fuel system is less than or equal to the second preset viscosity. Generally, the first preset viscosity is greater than or equal to the second preset viscosity.

[0120] In one embodiment, the fuel preheating module 2 includes:

[0121] Fuel testing component, used to detect fuel viscosity in the fuel system;

[0122] A fuel heating component is used to heat the fuel system;

[0123] The first module controller 21 is respectively connected to the fuel detection component, the fuel heating component and the main controller 5, and is configured as follows:

[0124] When it is determined that the fuel viscosity of the fuel system is greater than a second preset viscosity, the fuel heating component is controlled to heat the fuel system, and when it is determined that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity, the fuel heating component is controlled to stop;

[0125] When it is determined that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity, feedback is given to the main controller 5;

[0126] When it is determined that the fuel viscosity in the fuel tank is less than the first preset viscosity, feedback is given to the main controller 5 .

[0127] Specifically, the fuel detection component may include a fuel tank viscosity sensor for detecting the fuel viscosity of the fuel tank, a fuel line viscosity sensor for detecting the fuel viscosity of the fuel line of the fuel system, and a filter viscosity sensor 24 for detecting the fuel viscosity of the filter of the fuel system. The fuel heating component may include a fuel tank heater for heating the fuel tank, a fuel line heater for heating the fuel line, and a filter heater 25 for heating the filter. The first module controller 21 is respectively connected to the fuel tank viscosity sensor, the fuel line viscosity sensor, the filter viscosity sensor, the fuel tank heater, the fuel line heater, and the filter heater, and is configured as follows:

[0128] When it is determined that the fuel viscosity of the fuel tank is greater than a second preset viscosity, controlling the fuel tank heater to heat the fuel tank;

[0129] When it is determined that the fuel viscosity of the fuel line is greater than a second preset viscosity, controlling the fuel line heater to heat the fuel line;

[0130] When it is determined that the fuel viscosity of the filter is greater than a second preset viscosity, the filter heater is controlled to heat the filter.

[0131] Specifically, the fuel tank viscosity sensor and the fuel tank heater may be integrated into the fuel tank fuel level sensor 22 , and the fuel line viscosity sensor may be integrated into the fuel line heater 23 .

[0132] Specifically, the fuel tank heater and the filter heater may be PTC heaters, and the fuel line heater may be a heating resistor or carbon fiber.

[0133] In this embodiment, the first module controller 21 directly controls the fuel heating component according to the fuel viscosity. This setting can ensure that the fuel viscosity of the fuel system is in an appropriate viscosity range before the engine is started, thereby avoiding the problem of local waxing and clogging of the fuel system due to excessive fuel viscosity, which affects the starting of the engine.

[0134] In one embodiment, referring to the attached Figure 2 As shown, the antifreeze liquid preheating module 3 includes:

[0135] A first antifreeze liquid circulation loop, used for heating the battery 1;

[0136] A second antifreeze circulation loop is used to heat the engine;

[0137] A battery temperature sensor 33, used to detect the temperature of the battery 1;

[0138] The engine water temperature sensor 32 is used to detect the water temperature of the engine;

[0139] The second module controller 31 is respectively connected to the first antifreeze liquid circulation loop, the second antifreeze liquid circulation loop, the battery temperature sensor 33 and the engine water temperature sensor 32 for communication, and is configured as follows:

[0140] When it is determined that the temperature of the storage battery 1 is greater than or equal to the first preset temperature, feedback is given to the main controller 5;

[0141] When it is determined that the water temperature of the engine is greater than or equal to the second preset temperature, feedback is given to the main controller 5;

[0142] When it is determined that the temperature of the battery 1 is lower than the first preset temperature, the first antifreeze liquid circulation loop is controlled to heat the battery 1 until the temperature of the battery 1 is higher than or equal to the first preset temperature, and the first antifreeze liquid circulation loop is controlled to shut down;

[0143] When it is determined that the temperature of the battery 1 is greater than or equal to the first preset temperature and the water temperature of the engine is less than the second preset temperature, the second antifreeze circulation loop is controlled to heat the engine until the water temperature of the engine is greater than or equal to the second preset temperature, and then the second antifreeze circulation loop is controlled to shut down.

[0144] In this embodiment, through the control of the second module controller 31, the preheating of the battery 1 can take precedence over the preheating of the engine. The engine is preheated only after the temperature of the battery 1 reaches the first preset temperature. This arrangement can ensure that the battery 1 has sufficient power during the preheating process, thereby improving the preheating efficiency and effect.

[0145] Specifically, the antifreeze preheating module 3 includes a battery heat exchanger 34 for exchanging heat with the battery, an antifreeze heater 35 and a first control valve 36. The antifreeze heater 35 is configured to heat the internal antifreeze through the fuel in the fuel tank, that is, the fuel in the fuel tank is sucked by the fuel pump, and the internal antifreeze is heated by the heat generated by the combustion of the fuel. The antifreeze heater 35 itself is a device well known to those skilled in the art, so its specific working principle and structure are not described in detail here; the antifreeze heater, the first control valve and the battery heat exchanger are connected end to end in sequence to form a first antifreeze circulation loop together, and the second module controller 31 is respectively connected to the antifreeze heater 35 and the first control valve 36 for communication, and is configured as follows:

[0146] When it is determined that the temperature of the battery 1 is lower than the first preset temperature, the antifreeze heater 35 and the first control valve 36 are controlled to be opened respectively, until the temperature of the battery 1 is higher than or equal to the first preset temperature, and the first control valve 36 is controlled to be closed.

[0147] Specifically, the antifreeze preheating module 3 further includes an engine heat exchanger 37 for exchanging heat with the engine and a second control valve 38. The antifreeze heater 35 and the second control valve 38 are connected end to end with the engine heat exchanger 37 to form a second antifreeze circulation loop. The second module controller 31 is connected to the second control valve 38 in communication and is configured as follows:

[0148] When it is determined that the temperature of the battery 1 is greater than or equal to the first preset temperature and the water temperature of the engine is less than the second preset temperature, the second control valve 38 is controlled to open. When the water temperature of the engine is greater than or equal to the second preset temperature, the second control valve 38 and the antifreeze heater 35 are controlled to close.

[0149] In one embodiment, the hydraulic oil preheating module 4 comprises:

[0150] Hydraulic oil detection component, used to detect the viscosity of hydraulic oil in the hydraulic system;

[0151] Hydraulic oil heating assembly, used to heat the hydraulic system;

[0152] The third module controller 41 is respectively connected to the hydraulic oil detection component, the hydraulic oil heating component and the main controller 5, and is configured as follows:

[0153] When it is determined that the viscosity of the hydraulic oil of the hydraulic system is greater than a third preset viscosity, the hydraulic oil heating component is controlled to heat the hydraulic system, and when it is determined that the viscosity of the hydraulic oil of the hydraulic system is less than or equal to the third preset viscosity, the hydraulic oil heating component is controlled to stop;

[0154] When it is determined that the viscosity of the hydraulic oil of the hydraulic system is less than or equal to the third preset viscosity, feedback is given to the main controller 5 .

[0155] In this embodiment, the third module controller 41 directly controls the hydraulic oil heating component according to the viscosity of the hydraulic oil. This setting can ensure that the viscosity of the hydraulic oil in the hydraulic system is in an appropriate viscosity range before the engine is started, thereby avoiding the problem that the hydraulic oil viscosity is too high and increases the starting load of the engine, thereby affecting the starting of the engine.

[0156] Specifically, refer to the attached Figure 2 As shown, the hydraulic oil detection component includes a hydraulic oil tank viscosity sensor for detecting the viscosity of the hydraulic oil in the hydraulic oil tank, a hydraulic oil pipeline viscosity sensor for detecting the fuel viscosity of the hydraulic pipeline of the hydraulic system, and a hydraulic pump viscosity sensor 42 for detecting the fuel viscosity of the hydraulic pump of the hydraulic system. The hydraulic oil heating component includes a hydraulic oil tank heater 43 for heating the hydraulic oil tank, a hydraulic pipeline heater 44 for heating the hydraulic pipeline, and a hydraulic pump heater 45 for heating the hydraulic pump. The third module controller 41 is respectively connected to the hydraulic oil tank viscosity sensor, the hydraulic oil pipeline viscosity sensor, the hydraulic pump viscosity sensor, the hydraulic oil tank heater 43, the hydraulic pipeline heater 44, and the hydraulic pump heater 45 for heating the hydraulic pump, and is configured as follows:

[0157] When it is determined that the viscosity of the hydraulic oil in the hydraulic oil tank is greater than a third preset viscosity, controlling the hydraulic oil tank heater 43 to heat the hydraulic oil tank;

[0158] When it is determined that the viscosity of the fuel in the hydraulic pipeline is greater than a third preset viscosity, controlling the hydraulic pipeline heater 44 to heat the hydraulic pipeline;

[0159] When it is determined that the fuel viscosity of the hydraulic pump is greater than the third preset viscosity, the hydraulic pump heater 45 is controlled to heat the hydraulic pump.

[0160] Specifically, the hydraulic oil line viscosity sensor may be integrated into the hydraulic line heater 44 , and the hydraulic oil tank viscosity sensor may be integrated into the hydraulic oil tank heater 43 .

[0161] In one embodiment, referring to the attached Figure 2 As shown, the cold start preheating system further includes an ambient temperature sensor 6 for detecting the ambient temperature and a master control switch 7. The master controller 5 is in communication connection with the ambient temperature sensor 6 and is electrically connected to the battery 1 through the master control switch 7. The master controller 5 is configured as follows:

[0162] When it is determined that the ambient temperature is lower than the preset ambient temperature, the preheating mode is entered.

[0163] It can be understood that the master controller 5 is electrically connected to the battery 1 through the master control switch 7, that is, the master control switch 7 can control the power on and off of the master controller 5. In actual application, the master control switch 7 can be controlled by manual control, remote control by a remote controller, or remote control by a mobile phone APP, and a timed start function can be set. Among them, remote control by a remote controller or remote control by a mobile phone APP allows the user to start the cold start preheating system without entering the cab, which has good convenience.

[0164] In addition, by turning off the master control switch 7, the master controller 5 can be powered off and exit the preheating mode, that is, the entire cold start preheating system is powered off.

[0165] In one embodiment, referring to the attached Figure 1 and attached Figure 2 As shown, the cold start preheating system also includes:

[0166] The gearbox preheating module 9 is used to preheat the gear oil of the gearbox of the engineering machinery;

[0167] A transfer case preheating module 10, used to preheat the gear oil of the transfer case of the engineering machinery;

[0168] The master controller 5 is respectively connected to the transmission preheating module 9 and the transfer case preheating module 10 in communication, and is configured as follows:

[0169] After the engine startable signal is generated and sent, the control battery 1 is powered on to the transmission preheating module and the transfer case preheating module respectively to start the transmission preheating module 9 and the transfer case preheating module 10 .

[0170] It is understandable that in extremely cold areas, due to the low temperature, the gear oil viscosity of the gearbox and transfer case is relatively high and the fluidity is relatively poor, which will lead to large transmission resistance, high energy consumption and uneven gear shifting of the engineering machinery. In the cold start preheating system of this embodiment, the gearbox preheating module 9 and the transfer case preheating module 10 can be used to preheat the gearbox and transfer case of the engineering machinery respectively, so that the transmission resistance of the gearbox and the transfer case in a low temperature environment is relatively small, the energy consumption is relatively low and the gear shifting is smooth.

[0171] In one embodiment, referring to the attached Figure 2 As shown, the gearbox preheating module 9 includes:

[0172] A gearbox heater 92, used to heat the gear oil of the gearbox;

[0173] Transmission viscosity sensor, used to detect the gear oil viscosity of the transmission;

[0174] The fourth module controller 91 is respectively connected to the transmission heater 92, the transmission viscosity sensor and the main controller 5 in communication, and is configured as follows:

[0175] When it is determined that the gear oil viscosity of the gearbox is greater than a fourth preset viscosity, the gearbox heater 92 is controlled to heat the gear oil of the gearbox, until it is determined that the gear oil viscosity of the gearbox is less than or equal to the fourth preset viscosity, the gearbox heater is controlled to stop;

[0176] When it is determined that the gear oil viscosity of the transmission is less than or equal to the fourth preset viscosity, feedback is given to the main controller 5 .

[0177] In this embodiment, the fourth module controller 91 directly controls the gearbox heater 92 according to the gear oil viscosity of the gearbox, so that the fluidity of the gear oil in the gearbox can be reliably ensured.

[0178] In one embodiment, referring to the attached Figure 2 As shown, the transfer case preheating module 10 includes:

[0179] A transfer case heater 102, used to heat the gear oil of the transfer case;

[0180] Transfer case viscosity sensor, used to detect the gear oil viscosity of the transfer case;

[0181] The fifth module controller 101 is respectively connected to the transfer case heater 102, the transfer case viscosity sensor and the master controller 5 in communication, and is configured as follows:

[0182] When it is determined that the gear oil viscosity of the transfer case is greater than a fifth preset viscosity, the transfer case heater 102 is controlled to heat the gear oil of the transfer case, until it is determined that the gear oil viscosity of the transfer case is less than or equal to the fifth preset viscosity, the transfer case heater is controlled to stop;

[0183] When it is determined that the gear oil viscosity of the transfer case is less than or equal to the fifth preset viscosity, feedback is given to the main controller 5 .

[0184] In this embodiment, the fifth module controller 101 directly controls the transfer case heater 102 according to the gear oil viscosity of the transfer case, so that the fluidity of the gear oil in the transfer case can be reliably ensured.

[0185] In one embodiment, the overall controller 5 is configured as follows:

[0186] When it is determined that the gear oil viscosity of the transmission is less than or equal to the fourth preset viscosity and the gear oil viscosity of the transfer case is less than or equal to the fifth preset viscosity, a drivable signal is generated and sent, so that the user can be prompted that the transmission and the transfer case have been preheated and the construction machinery can start to travel.

[0187] In this embodiment, the master controller 5 can send a drivable signal through a display device or a signal light or other prompting device to prompt the user that the construction machinery meets the driving conditions through display or light prompts.

[0188] In one embodiment, the cold start preheating system further includes a cab preheating module 11 for preheating the cab of the engineering machinery. The main controller 5 is in communication connection with the cab preheating module 11 and is configured as follows:

[0189] After generating and issuing an engine startable signal and receiving a cab preheating instruction input by the user, the control battery 1 supplies power to the cab preheating module 11 to start the cab preheating module 11, and when it is determined that the indoor temperature of the cab is greater than or equal to the preset indoor temperature, an indoor preheating completion signal is generated and issued.

[0190] In this embodiment, the cab can be preheated by the cab preheating module 11. Such a configuration can allow the cab to heat up quickly, effectively improving the user experience.

[0191] In actual application, mobile terminals such as mobile phones can be connected to the main controller 5 for communication, and cab preheating instructions can be remotely sent to the main controller 5 through mobile terminals such as mobile phones. With this arrangement, the user can remotely control the cab preheating module 11 to preheat the cab without having to wait in the cab for the indoor temperature to rise.

[0192] In one embodiment, the cab preheating module 11 includes:

[0193] A warm air heater 112 is used to supply warm air into the cab;

[0194] A cab temperature sensor 113, used to detect the indoor temperature of the cab;

[0195] The sixth module controller 111 is respectively connected to the warm air heater 112, the cab temperature sensor 113 and the main controller 5 in communication, and is configured as follows:

[0196] When it is determined that the indoor temperature of the cab is lower than the preset indoor temperature, the warm air heater 112 is controlled to supply warm air into the cab so that the indoor temperature of the cab is maintained at a level greater than or equal to the preset indoor temperature;

[0197] When it is determined that the indoor temperature of the cab is greater than or equal to the preset indoor temperature, feedback is given to the main controller 5 .

[0198] In one embodiment, the cab preheating module 11 may further include a cab heat exchanger 114 and a third control valve 115. The cab heat exchanger 114, the third control valve 115 and the engine heat exchanger 37 are connected end to end in sequence to form a water heating circulation loop. The sixth module controller 111 is also connected to the third control valve in communication and is configured as follows:

[0199] When it is determined that the water temperature of the engine is lower than the second preset temperature or the engine is not in the started state, the warm air heater 112 is controlled to start and the third reversing valve is controlled to close. When it is determined that the water temperature of the engine is greater than or equal to the preset temperature and the engine is in the started state, the warm air heater is controlled to stop and the third reversing valve is controlled to open.

[0200] With such an arrangement, the high-temperature hot water in the engine heat exchanger 37 can be used to heat the cab, thereby increasing the indoor temperature of the cab more quickly.

[0201] In one embodiment, the cold start preheating system also includes multiple module switches 8, and the fuel preheating module 2, the antifreeze preheating module 3, the hydraulic oil preheating module 4, the transmission preheating module 9, the transfer case preheating module 10 and the cab preheating module 11 are respectively electrically connected to the battery 1 through the multiple module switches 8, and the main controller 5 is communicatively connected to the multiple module switches 8.

[0202] It can be understood that the main controller 5 can control the on and off of the fuel preheating module 2, the antifreeze preheating module 3, the hydraulic oil preheating module 4, the transmission preheating module 9, the transfer case preheating module 10 and the cab preheating module 11 through multiple module switches 8, thereby controlling the start of the fuel preheating module 2, the antifreeze preheating module 3, the hydraulic oil preheating module 4, the transmission preheating module 9, the transfer case preheating module 10 and the cab preheating module 11. When some preheating modules do not need to be started or the preheating is completed, they can be turned off through the corresponding module switches 8 to cut off the power to the corresponding preheating modules. In this way, the waste of battery 1 power can be avoided, and the sufficient power of battery 1 can be further ensured.

[0203] The present invention also provides an engineering machine, which includes the cold start preheating system. The specific structure of the cold start preheating system refers to the above embodiment. Since the engineering machine adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0204] The engineering machinery of the present invention can be a traditional fuel-powered crane, pump truck, etc., or it can be an engineering machinery with a new energy structure, such as a new energy crane, a new energy truck-mounted crane, a new energy mixer truck, a new energy pump truck, etc.

[0205] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood 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 of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0206] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0207] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0208] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cold start preheating system, applied to engineering machinery, characterized in that: The cold start preheating system comprises: Battery (1); A fuel preheating module (2), used for preheating the fuel system of the engineering machinery; an antifreeze preheating module (3), configured to heat the antifreeze inside the fuel tank of the fuel system through the fuel, and used to preheat the storage battery (1) and the engine of the engineering machinery respectively through the heated antifreeze; A hydraulic oil preheating module (4), used for preheating the hydraulic system of the engineering machinery; A main controller (5) is electrically connected to the battery (1), and is respectively communicatively connected to the fuel preheating module (2), the antifreeze liquid preheating module (3), and the hydraulic oil preheating module (4), and is configured as follows: After entering the preheating mode, the storage battery (1) is controlled to energize the fuel preheating module (2) so that the fuel preheating module (2) starts to operate; When it is determined that the viscosity of the fuel in the fuel tank is less than a first preset viscosity, controlling the storage battery (1) to energize the antifreeze preheating module (3) so that the antifreeze preheating module (3) starts to operate; When it is determined that the temperature of the storage battery (1) reaches a first preset temperature, controlling the storage battery (1) to energize the hydraulic oil preheating module (4) so ​​that the hydraulic oil preheating module (4) starts to operate; When it is determined that the fuel viscosity of the fuel system is less than or equal to a second preset viscosity, when it is determined that the temperature of the battery (1) is greater than or equal to a first preset temperature, when it is determined that the water temperature of the engine is greater than or equal to a second preset temperature, and when it is determined that the hydraulic oil viscosity of the hydraulic system is less than or equal to a third preset viscosity, an engine startable signal is generated and issued.

2. The cold start preheating system according to claim 1, characterized in that: The fuel preheating module (2) comprises: A fuel detection component, used for detecting the fuel viscosity of the fuel system; A fuel heating component, used for heating the fuel system; The first module controller (21) is respectively connected to the fuel detection component, the fuel heating component and the master controller (5) for communication, and is configured as follows: When it is determined that the fuel viscosity of the fuel system is greater than a second preset viscosity, the fuel heating component is controlled to heat the fuel system, until it is determined that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity, the fuel heating component is controlled to stop; When it is determined that the fuel viscosity of the fuel system is less than or equal to the second preset viscosity, the master controller (5) is fed back When it is determined that the viscosity of the fuel in the fuel tank is less than a first preset viscosity, feedback is provided to the main controller (5).

3. The cold start preheating system according to claim 1, characterized in that: The antifreeze liquid preheating module (3) comprises: A first antifreeze liquid circulation loop, used for heating the battery (1); a second antifreeze circulation loop, used for heating the engine; A battery temperature sensor (33) for detecting the temperature of the battery (1); An engine water temperature sensor (32), used for detecting the water temperature of the engine; The second module controller (31) is respectively communicatively connected to the first antifreeze liquid circulation loop, the second antifreeze liquid circulation loop, the battery temperature sensor (33) and the engine water temperature sensor (32), and is configured as follows: When determining that the temperature of the storage battery (1) is greater than or equal to a first preset temperature, feeding back the information to the main controller (5); When it is determined that the water temperature of the engine is greater than or equal to a second preset temperature, feeding back to the main controller (5); When it is determined that the temperature of the storage battery (1) is lower than a first preset temperature, the first antifreeze liquid circulation circuit is controlled to heat the storage battery (1) until the temperature of the storage battery (1) is higher than or equal to the first preset temperature, and the first antifreeze liquid circulation circuit is controlled to shut down; When it is determined that the temperature of the battery (1) is greater than or equal to a first preset temperature and when it is determined that the water temperature of the engine is less than a second preset temperature, the second antifreeze liquid circulation loop is controlled to heat the engine until the water temperature of the engine is greater than or equal to the second preset temperature, and then the second antifreeze liquid circulation loop is controlled to shut down.

4. The cold start preheating system according to claim 1, characterized in that: The hydraulic oil preheating module (4) comprises: A hydraulic oil detection component, used to detect the viscosity of the hydraulic oil in the hydraulic system; A hydraulic oil heating assembly, used for heating the hydraulic system; The third module controller (41) is respectively connected to the hydraulic oil detection component, the hydraulic oil heating component and the main controller (5) for communication, and is configured as follows: When it is determined that the viscosity of the hydraulic oil of the hydraulic system is greater than a third preset viscosity, the hydraulic oil heating component is controlled to heat the hydraulic system, and when it is determined that the viscosity of the hydraulic oil of the hydraulic system is less than or equal to the third preset viscosity, the hydraulic oil heating component is controlled to stop; When it is determined that the viscosity of the hydraulic oil of the hydraulic system is less than or equal to a third preset viscosity, feedback is provided to the main controller (5).

5. The cold start preheating system according to claim 1, characterized in that: The cold start preheating system further comprises an ambient temperature sensor (6) for detecting ambient temperature and a master control switch (7), wherein the master controller (5) is communicatively connected to the ambient temperature sensor (6) and is electrically connected to the storage battery (1) via the master control switch (7), and the master controller (5) is configured as follows: When it is determined that the ambient temperature is lower than the preset ambient temperature, a preheating mode is entered.

6. The cold start preheating system according to claim 1, characterized in that: The cold start preheating system further comprises a plurality of module switches (8), the fuel preheating module (2), the antifreeze liquid preheating module (3) and the hydraulic oil preheating module (4) are respectively electrically connected to the battery (1) via the plurality of module switches (8), and the master controller (5) is communicatively connected to the plurality of module switches (8).

7. The cold start preheating system according to claim 1, characterized in that: The cold start preheating system also includes: A gearbox preheating module (9), used for preheating the gear oil of the gearbox of the engineering machinery; A transfer case preheating module (10), used for preheating the gear oil of the transfer case of the engineering machinery; The master controller (5) is respectively connected to the transmission preheating module (9) and the transfer case preheating module (10) in communication, and is configured as follows: After the engine startable signal is generated and sent, the storage battery (1) is controlled to energize the transmission preheating module and the transfer case preheating module respectively so that the transmission preheating module (9) and the transfer case preheating module (10) start to operate.

8. The cold start preheating system according to claim 7, characterized in that: The gearbox preheating module (9) comprises: A gearbox heater (92), used for heating the gear oil of the gearbox; A gearbox viscosity sensor, used to detect the gear oil viscosity of the gearbox; The fourth module controller (91) is respectively connected to the transmission heater (92), the transmission viscosity sensor and the master controller (5) for communication, and is configured as follows: When it is determined that the gear oil viscosity of the gearbox is greater than a fourth preset viscosity, the gearbox heater (92) is controlled to heat the gear oil of the gearbox, until it is determined that the gear oil viscosity of the gearbox is less than or equal to the fourth preset viscosity, the gearbox heater (92) is controlled to stop; When it is determined that the gear oil viscosity of the gearbox is less than or equal to a fourth preset viscosity, feedback is provided to the main controller (5).

9. The cold start preheating system according to claim 7, characterized in that: The transfer case preheating module (10) comprises: A transfer case heater (102), used for heating the gear oil of the transfer case; A transfer case viscosity sensor, used to detect the gear oil viscosity of the transfer case; The fifth module controller (101) is respectively connected to the transfer case heater (102), the transfer case viscosity sensor and the master controller (5) for communication, and is configured as follows: When it is determined that the gear oil viscosity of the transfer case is greater than a fifth preset viscosity, the transfer case heater (102) is controlled to heat the gear oil of the transfer case, until it is determined that the gear oil viscosity of the transfer case is less than or equal to the fifth preset viscosity, the transfer case heater (102) is controlled to stop; When it is determined that the gear oil viscosity of the transfer case is less than or equal to a fifth preset viscosity, feedback is provided to the master controller (5).

10. The cold start preheating system according to claim 7, characterized in that: The master controller (5) is configured as follows: When it is determined that the gear oil viscosity of the transmission is less than or equal to a fourth preset viscosity and when it is determined that the gear oil viscosity of the transfer case is less than or equal to a fifth preset viscosity, a drivable signal is generated and issued.

11. The cold start preheating system according to claim 1, characterized in that: The cold start preheating system further comprises a cab preheating module (11) for preheating the cab of the engineering machinery, and the main controller (5) is communicatively connected to the cab preheating module (11) and is configured as follows: After generating and sending an engine startable signal and receiving a cab preheating instruction input by a user, the storage battery (1) is controlled to energize the cab preheating module (11) so that the cab preheating module (11) starts to operate, and when it is determined that the indoor temperature of the cab is greater than or equal to a preset indoor temperature, an indoor preheating completion signal is generated and sent.

12. The cold start preheating system according to claim 11, characterized in that: The cab preheating module (11) comprises: A warm air heater (112) is used to supply warm air into the cab; A cab temperature sensor (113), used for detecting the indoor temperature of the cab; The sixth module controller (111) is respectively connected to the warm air heater (112), the cab temperature sensor (113) and the master controller (5) for communication, and is configured as follows: When it is determined that the indoor temperature of the cab is lower than a preset indoor temperature, controlling the warm air heater (112) to supply warm air into the cab so that the indoor temperature of the cab is maintained at a level greater than or equal to the preset indoor temperature; When it is determined that the indoor temperature of the cab is greater than or equal to the preset indoor temperature, feedback is given to the main controller (5).

13. An engineering machine, characterized in that: The construction machine comprises the cold start preheating system according to any one of claims 1 to 12.

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