CN113482828A - Vehicle and method for preheating hydraulic oil - Google Patents
Vehicle and method for preheating hydraulic oil Download PDFInfo
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- CN113482828A CN113482828A CN202110853331.XA CN202110853331A CN113482828A CN 113482828 A CN113482828 A CN 113482828A CN 202110853331 A CN202110853331 A CN 202110853331A CN 113482828 A CN113482828 A CN 113482828A
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 256
- 238000000034 method Methods 0.000 title claims abstract description 44
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 394
- 239000003345 natural gas Substances 0.000 claims abstract description 197
- 239000000110 cooling liquid Substances 0.000 claims abstract description 157
- 239000002826 coolant Substances 0.000 claims abstract description 94
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 230000000903 blocking effect Effects 0.000 claims abstract description 10
- 239000003949 liquefied natural gas Substances 0.000 claims description 48
- 239000003921 oil Substances 0.000 claims description 32
- 239000002283 diesel fuel Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000005086 pumping Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 description 20
- 238000012545 processing Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 10
- 239000000446 fuel Substances 0.000 description 9
- 238000004590 computer program Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000002309 gasification Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920001875 Ebonite Polymers 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0427—Heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The application provides a vehicle and a preheating method of hydraulic oil, in the vehicle, a hydraulic oil supply module and a natural gas supply module are connected through a first pipeline, for supplying hydraulic oil to the natural gas supply module, a third pipe connected to the second pipe for conveying the coolant in the coolant supply module to the second pipe, the second pipe being attached to the first pipe, so that the cooling liquid in the second pipeline heats the hydraulic oil in the first pipeline, the switch module is arranged on the third pipeline, used for blocking or conducting the cooling liquid flowing into the second pipeline, the ECU is respectively connected with the switch module and the temperature detection module, the temperature detection module is used for detecting the temperature of the hydraulic oil in the first pipeline, when the temperature of the hydraulic oil is less than or equal to a preset threshold value, and controlling the switch module to be opened, so that the cooling liquid heats the hydraulic oil in the first pipeline. Therefore, the problem of possible damage to the rotating part of the hydraulic pump under the low-temperature condition is solved.
Description
Technical Field
The application relates to the technical field of engines, in particular to a vehicle and a preheating method of hydraulic oil.
Background
The High Pressure Direct Injection (HPDI) technology is a technology that a coaxial dual-fuel injector is used to directly inject High-Pressure natural gas into a cylinder of an engine, and simultaneously, diesel oil is injected to ignite the natural gas to start the engine.
At present, aiming at the HPDI technology, hydraulic oil in an oil storage tank is mainly driven by a hydraulic pump to provide power for a natural gas pressurizing device, so that liquefied natural gas in a natural gas tank is pressurized, the liquefied natural gas is heated and gasified by cooling liquid generated by a diesel hot car, and the gasified natural gas is sprayed into a cylinder of an engine at high pressure to realize normal running of the vehicle.
However, when the outside temperature is too low, the temperature of the hydraulic oil in the oil storage tank is too low in the hot car stage, so that the viscosity is too low, the torque borne by the rotating part of the hydraulic pump is increased, the hydraulic pump is easily damaged, and the service life is shortened.
Disclosure of Invention
The application provides a preheating method of vehicle and hydraulic oil for solve under microthermal weather condition, the hydraulic oil temperature is low excessively, leads to the increase of the moment that the rotating member of hydraulic pump receives, thereby causes the problem of damage to the hydraulic pump.
In a first aspect, an embodiment of the present application provides a vehicle, including: the system comprises an electronic control unit ECU, a cooling liquid supply module, a hydraulic oil supply module, a natural gas supply module, a switch module, a temperature detection module, a first pipeline, a second pipeline and a third pipeline;
the hydraulic oil supply module is connected with the natural gas supply module through the first pipeline and used for providing hydraulic oil for the natural gas supply module;
the third pipeline is connected with the second pipeline and used for conveying the cooling liquid in the cooling liquid supply module to the second pipeline;
the second pipeline is attached to the first pipeline, so that the cooling liquid in the second pipeline heats the hydraulic oil in the first pipeline;
the switch module is arranged on the third pipeline and used for blocking or conducting the cooling liquid flowing into the second pipeline;
the ECU is connected with the switch module and the temperature detection module respectively and is used for acquiring the temperature of the hydraulic oil in the first pipeline detected by the temperature detection module, and when the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, the switch module is controlled to be turned on, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline.
In one possible design of the first aspect, the vehicle further includes: a fourth conduit;
the fourth pipeline is used for connecting the natural gas supply module and the cooling liquid supply module and conveying the cooling liquid in the cooling liquid supply module to the natural gas supply module;
the cooling liquid is also used for heating the liquefied natural gas in the natural gas supply module, so that the liquefied natural gas is converted into gasified natural gas.
In another possible design of the first aspect, the vehicle further includes: a diesel supply module, an engine and a coolant circulation conduit;
the cooling liquid circulating pipeline is used for cooling the engine and providing cooling liquid for the cooling liquid supply module;
the engine is respectively connected with the diesel oil supply module and the cooling liquid supply module, and the diesel oil supply module is used for supplying diesel oil to the engine;
and after the engine is started, the cooling liquid supply module is used for conveying the cooling liquid after the temperature of the engine is reduced to the third pipeline.
In this possible design, the vehicle further includes: a fifth pipeline, a sixth pipeline, and a seventh pipeline;
the fifth pipeline and the first pipeline form hydraulic oil internal circulation, and the natural gas supply module is connected with the hydraulic oil supply module through the fifth pipeline and used for pumping the pressurized hydraulic oil of the gasified natural gas back to the hydraulic oil supply module;
the sixth pipeline is attached to the fifth pipeline, so that the cooling liquid in the sixth pipeline heats the hydraulic oil in the fifth pipeline;
the sixth pipe and a coolant circulation pipe in the engine are connected by the seventh pipe, for returning the coolant in the sixth pipe to the coolant circulation pipe through the seventh pipe;
correspondingly, the seventh pipeline is also used for pumping the cooling liquid in the fourth pipeline back to the cooling liquid circulating pipeline.
In yet another possible design of the first aspect, the natural gas supply module includes: the natural gas pressurization device comprises a natural gas tank and a natural gas pressurization device connected with the natural gas tank;
the natural gas tank is used for storing the liquefied natural gas;
the natural gas pressurizing device is used for pressurizing the gasified natural gas after the liquefied natural gas in the natural gas tank is gasified;
correspondingly, the hydraulic oil supply module provides hydraulic oil for the natural gas pressurizing device.
In this possible design, the hydraulic oil supply module includes: the hydraulic oil pressurizing device comprises an oil storage tank and a hydraulic oil pressurizing device connected with the oil storage tank;
the oil storage tank is used for storing the hydraulic oil;
the hydraulic oil pressurizing device is used for pumping hydraulic oil in the oil storage tank into the natural gas pressurizing device through the first pipeline.
In a second aspect, an embodiment of the present application provides a method for warming up hydraulic oil, which is applied to the ECU in the vehicle related to the first aspect and various possible designs of the first aspect, and the method includes:
the method comprises the steps of obtaining the temperature of hydraulic oil in a first pipeline measured by a temperature detection module, wherein the first pipeline is a pipeline connecting a hydraulic oil supply module and a natural gas supply module;
when the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, the switch module is controlled to be turned on, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline, the switch module is arranged on a third pipeline between the cooling liquid supply module and a second pipeline and used for blocking or conducting the cooling liquid flowing into the second pipeline, and the second pipeline is attached to the first pipeline.
In one possible design of the second aspect, the method further includes:
when the temperature of the hydraulic oil is greater than the first preset threshold value, the switch module is controlled to be turned off, and the cooling liquid in the cooling liquid supply module stops heating the hydraulic oil in the first pipeline.
In yet another possible design of the second aspect, the method further includes:
acquiring the temperature of cooling liquid in a cooling liquid supply module, the pressure of gasified natural gas in a natural gas supply module and the liquefied natural gas liquid level of a natural gas tank in the natural gas supply module;
when the temperature of the hydraulic oil is larger than a first preset threshold value, the temperature of the cooling liquid is larger than a second preset threshold value, the pressure of the gasified natural gas is larger than a third preset threshold value, and the liquid level of the liquefied natural gas is larger than a fourth preset threshold value, the gasified natural gas and diesel oil in the diesel oil tank are controlled to be sprayed to a cylinder of the engine.
In this possible design, the method further comprises:
controlling the diesel in the diesel tank to be injected to a cylinder of the engine when at least one of the following preset conditions is met, the preset conditions including: the temperature of the hydraulic oil is less than or equal to a first preset threshold value, the temperature of the cooling liquid is less than or equal to a second preset threshold value, the pressure of the gasified natural gas is less than or equal to a third preset threshold value, and the liquid level of the liquefied natural gas is less than or equal to a fourth preset threshold value.
In a third aspect, an embodiment of the present application provides a preheating device for hydraulic oil, which is applied to an ECU in a vehicle according to the first aspect and various possible designs of the first aspect, where the device includes: the device comprises an acquisition module and a processing module;
the acquisition module is used for acquiring the temperature of the hydraulic oil in a first pipeline measured by the temperature detection module, and the first pipeline is a pipeline connecting the hydraulic oil supply module and the natural gas supply module;
the processing module is used for controlling the switch module to be turned on when the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline, the switch module is arranged on a third pipeline between the cooling liquid supply module and the second pipeline and used for blocking or conducting the cooling liquid flowing into the second pipeline, and the second pipeline is attached to the first pipeline.
In a possible design of the third aspect, the processing module is further configured to control the switch module to be turned off when the temperature of the hydraulic oil is greater than the first preset threshold, so that the cooling liquid in the cooling liquid supply module stops heating the hydraulic oil in the first pipeline.
In yet another possible design of the third aspect, the obtaining module is further configured to obtain a temperature of the cooling liquid in the cooling liquid supply module, a pressure of the gasified natural gas in the natural gas supply module, and a liquefied natural gas level of the natural gas tank in the natural gas supply module;
the processing module is further used for controlling the gasified natural gas and diesel oil in the diesel oil tank to be sprayed to the cylinder of the engine when the temperature of the hydraulic oil is larger than a first preset threshold value, the temperature of the cooling liquid is larger than a second preset threshold value, the pressure of the gasified natural gas is larger than a third preset threshold value, and the liquid level of the liquefied natural gas is larger than a fourth preset threshold value.
In this possible design, the processing module is further configured to control the diesel in the diesel tank to be injected to the cylinders of the engine when at least one preset condition is satisfied, where the preset condition includes: the temperature of the hydraulic oil is less than or equal to a first preset threshold value, the temperature of the cooling liquid is less than or equal to a second preset threshold value, the pressure of the gasified natural gas is less than or equal to a third preset threshold value, and the liquid level of the liquefied natural gas is less than or equal to a fourth preset threshold value.
In a fourth aspect, an embodiment of the present application provides an ECU, including: a processor, a memory;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions to cause the ECU to execute the method of warming up hydraulic oil as described in the second aspect and various possible designs described above.
In a fifth aspect, embodiments of the present application provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is used for implementing the method for preheating hydraulic oil as described in the second aspect and various possible designs.
In a sixth aspect, embodiments of the present application provide a computer program product, which includes a computer program, and the computer program is used to implement the method for preheating hydraulic oil as described in the second aspect and various possible designs.
The vehicle and the method for preheating the hydraulic oil provided by the embodiment of the application are characterized in that the hydraulic oil supply module and the natural gas supply module are connected through a first pipeline, for supplying hydraulic oil to the natural gas supply module, a third pipe connected to the second pipe for conveying the coolant in the coolant supply module to the second pipe, the second pipe being attached to the first pipe, so that the cooling liquid in the second pipeline heats the hydraulic oil in the first pipeline, the switch module is arranged on the third pipeline, used for blocking or conducting the cooling liquid flowing into the second pipeline, the ECU is respectively connected with the switch module and the temperature detection module, the temperature detection module is used for detecting the temperature of the hydraulic oil in the first pipeline, when the temperature of the hydraulic oil is less than or equal to a preset threshold value, the control switch module is opened, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline. This vehicle passes through the coolant liquid and heats hydraulic oil, solves under microthermal weather condition, and the hydraulic oil temperature is crossed lowly, leads to the increase of the moment that the rotatable parts of hydraulic pump receives to cause the problem of damage to the hydraulic pump.
Drawings
FIG. 1 is a schematic diagram of a prior art HPDI in accordance with an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a first embodiment of a vehicle according to the present disclosure;
FIG. 3 is a schematic structural diagram of a second embodiment of a vehicle according to an embodiment of the present disclosure;
fig. 4 is a schematic flow chart of a first embodiment of a method for preheating hydraulic oil according to the present application;
fig. 5 is a schematic flow chart of a second embodiment of a method for preheating hydraulic oil according to the present application;
fig. 6 is a schematic structural diagram of a hydraulic oil preheating device according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an ECU provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
First, the technical terms and the technical background related to the embodiments of the present application are described:
a hydraulic pump: the power element of the hydraulic system is driven by an engine or an electric motor, oil is sucked from a hydraulic oil tank, pressure oil is formed and discharged, and the pressure oil is sent to an execution element. The types are: gear pumps, plunger pumps, vane pumps and screw pumps.
Hydraulic oil: the hydraulic medium used by the hydraulic system utilizing the liquid pressure energy plays roles of energy transfer, abrasion resistance, system lubrication, cooling and the like in the hydraulic system, and for hydraulic oil, the requirements of a hydraulic device on the viscosity of the liquid at the working temperature and the starting temperature are firstly met.
The High Pressure Direct Injection (HPDI) technology in the cylinder of the engine changes the traditional premixed ignition natural gas technology into the diffusion combustion technology, reduces the probability of occurrence of detonation in the cylinder, further realizes the High compression ratio of the natural gas engine, and improves the effective thermal efficiency.
The pressure of the natural gas directly injected into the cylinder reaches 30Mpa in some vehicles, and at this time, a set of hydraulic pump system is required to continuously pressurize the gasified natural gas, in the prior art, the vehicle includes an application example of a set of HPDI technology, that is, fig. 1 is a schematic structural diagram of HPDI in the prior art provided by the embodiment of the present application.
Illustratively, as shown in fig. 1, the schematic structural diagram includes: a radiator 101, a thermostat 102, an engine 103, a coolant circulation pipe 104, a coolant water pump 105, a natural gas tank 106, a natural gas pressurizing device 107, an oil storage tank 108, and a hydraulic oil pressurizing pump 109.
Optionally, the connection relationship and the usage of the above devices may include the following parts:
firstly, a cooling liquid circulation pipeline 104 surrounds the engine 103, and is used for cooling the engine 103 after the engine 103 is started, and specifically comprises: the coolant in the coolant circulation pipe 104 takes away heat of the engine 103 in the flowing process of the coolant circulation pipe 104; the radiator 101 is connected to the coolant circulation pipeline 104 and is used for cooling the coolant in the coolant circulation pipeline 104; the thermostat 102 is a valve that controls a flow path of the coolant, is mounted on a coolant circulation pipe 104 between the radiator 101 and the engine 103, and controls a flow rate of the coolant in the coolant circulation pipe 104 that cools the engine 103.
The coolant pump 105 is connected between the coolant circulation pipe 104 and the gasification heat exchanger of the natural gas tank 106, and is used for conveying the coolant containing the heat of the engine 103 to the natural gas tank 106, so that the liquefied natural gas in the natural gas tank 106 is gasified into the gasified natural gas. Wherein a further branch is included between the cooling liquid circulation line 104 and the gasification heat exchanger of the natural gas tank 106 for returning the cooling liquid heating the natural gas tank 106 to the cooling liquid circulation line 104.
Thirdly, the natural gas pressurizing device 107 is installed at the outlet of the natural gas tank 106 and used for pressurizing the gasified natural gas, specifically: the hydraulic oil pressurizing pump 109 sucks hydraulic oil in the oil storage tank 108 to form pressure oil, and the pressure oil is conveyed to the natural gas pressurizing device 107 to provide power for the natural gas pressurizing device 107.
And fourthly, the engine 103 is respectively in power connection with the cooling liquid water pump 105 and the hydraulic oil pumping pump 109 and is used for providing power for the cooling liquid water pump 105 and the hydraulic oil pumping pump 109.
Combining the connection relationships and the usage of the above devices, in one possible design, the implementation process of the HPDI in the prior art is as follows: in the preheating stage of the engine 103, diesel oil is injected into a cylinder of the engine 103, the engine generates heat in the rotation process, and the heat is taken away by the cooling liquid in the cooling liquid circulation pipeline 104, wherein a part of the cooling liquid containing the heat is cooled by the radiator 101, and the engine 103 is cooled again by the thermostat 102; another portion of the coolant containing heat is pumped by a coolant pump 105 (powered by the engine 103) to the outlet of the natural gas tank 106 for raising the temperature of the lng and gasifying it into gasified natural gas.
Further, the engine 103 provides power for the hydraulic oil pressurizing pump 109, the hydraulic oil in the oil storage tank 108 is sucked through the hydraulic oil pressurizing pump 109 to form pressure oil, the pressure oil is pumped into the natural gas pressurizing device 107 to provide power for the natural gas pressurizing device 107, so that the natural gas pressurizing device 107 pressurizes the gasified natural gas in the natural gas tank 106, the gasified natural gas is injected into a cylinder of the engine 103 at a certain pressure (for example, 30Mpa) to be mixed with diesel oil for combustion, and then the engine 103 formally enters an operation stage to realize an HPDI dual-fuel mode.
Wherein the coolant used to raise the temperature of the lng is re-fed back to the coolant circulation line 104 for further use in cooling the engine 103.
In the prior art, the HPDI dual fuel mode in the above manner has the following problems under the condition of excessively low air temperature: because the air temperature is low, the initial temperature of the hydraulic oil in the oil storage tank is low, the viscosity of the hydraulic oil is high in the process that the hydraulic oil is conveyed to a natural gas pressurizing device of a natural gas tank, a pipeline for conveying the hydraulic oil is a hard rubber pipe and is not wrapped by heat insulation materials, so that the moment borne by a rotating part of the hydraulic oil pressurizing pump is increased sharply (for example, a swash plate part of a plunger type hydraulic pump is severely stressed), if the temperature of the hydraulic oil cannot be increased rapidly in a pure diesel mode stage after an engine is started, after the engine is switched to an HPDI dual-fuel mode, the load is increased, the required rotating speed of the hydraulic oil pressurizing pump is increased, the hydraulic oil pressurizing pump body is easily damaged, and therefore the service life of the whole set of system is shortened.
In view of the above problems, the inventive concept of the present application is as follows: the inventor finds that, in the prior art, no way of heating up the hydraulic oil in the pipeline connecting the oil storage tank and the natural gas tank is available, which causes the technical problem, if after the engine is started, the heat of the cooling liquid (at this time, the heat of the engine is contained in the cooling liquid) used for heating the hydraulic oil in the pipeline is used for ensuring that the temperature of the hydraulic oil is in a range without damaging the rotating parts of the hydraulic oil pumping pump, so that the problems in the prior art can be avoided, and in order to avoid the overhigh temperature for heating the hydraulic oil, the temperature of the hydraulic oil can be measured in real time, and the cooling liquid is selected to be turned off to stop heating the hydraulic oil.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
Fig. 2 is a schematic structural diagram of a first vehicle embodiment provided in the present application. As shown in fig. 2, the vehicle includes: an Electronic Control Unit (ECU) 201, a coolant supply module 202, a hydraulic oil supply module 203, a natural gas supply module 204, a switch module 205, a temperature detection module 206, a first pipe 207, a second pipe 208, and a third pipe 209.
The hydraulic oil supply module 203 is connected with the natural gas supply module 204 through a first pipeline 207, and is used for supplying hydraulic oil to the natural gas supply module 204.
Further, a third pipe 209 is connected to the second pipe 208 for conveying the coolant in the coolant supply module 202 to the second pipe 208; the second pipe 208 is attached to the first pipe 207 such that the coolant in the second pipe 208 heats the hydraulic oil in the first pipe 207; the switching module 205 is disposed on the third pipe 209 for blocking or conducting the coolant flowing into the second pipe 208.
The ECU 201 is connected to the switch module 205 and the temperature detection module 206, respectively, and is configured to obtain a temperature of the hydraulic oil in the first pipeline 207 detected by the temperature detection module 206, and control the switch module 205 to turn on when the temperature of the hydraulic oil is less than or equal to a first preset threshold, so that the hydraulic oil in the first pipeline 207 is heated by the cooling liquid in the cooling liquid supply module 202.
Specifically, the coolant supply module 202 may be an engine coolant pump, and pumps the coolant after cooling the engine into the third pipe 209; the switch module 205 may be a valve installed on the third pipe 209, may be a regulating valve (i.e., regulating the flow of the cooling liquid to the second pipe), a shut-off valve, etc.; the temperature detecting module 206 may be a thermometer installed on the first pipeline for measuring the temperature of the hydraulic oil in the first pipeline, or may be a temperature sensor or the like.
It should be understood that: the material of the pipes involved in the embodiments of the present application differs depending on the respective use, and for example, the material of the first pipe may be a hard rubber tube.
In a possible implementation, when the vehicle is in a warm-up stage, the temperature detection module 206 detects the temperature of the hydraulic oil in the first pipeline 207, the ECU 201 obtains the temperature of the hydraulic oil, compares the temperature with a first preset threshold, and when the temperature of the hydraulic oil is less than or equal to the first preset threshold, it indicates that the hydraulic oil is low-temperature and viscous, and may cause physical damage to a hydraulic oil pumping pump, at this time, the ECU 201 controls the switch module 205 to be turned on, so that the cooling liquid supply module 202 transfers the cooling liquid with heat to the second pipeline 208 through the third pipeline 209, so that the second pipeline 208 is heated, and the first pipeline 207 is heated, thereby increasing the temperature of the hydraulic oil in the first pipeline 207.
The first preset threshold value may be determined according to a torque range that a technician can bear the hydraulic oil pressurizing pump, or may be set according to experience of the technician or a user.
It is to be understood that the second conduit 208 is attached to the first conduit 207, and that the second conduit 208 may be wrapped around the first conduit 207; the junction of the third pipe 209 and the second pipe 208 can be any position of the second pipe 208, and can be set according to actual needs.
In addition, the flow direction of the cooling liquid for heating the hydraulic oil is not limited in the embodiments of the present application, that is, the flow direction of the hydraulic oil may be the same as or opposite to the flow direction of the cooling liquid (which is preferable).
The vehicle that this application embodiment provided, this vehicle includes: the device comprises an electronic control unit ECU, a cooling liquid supply module, a hydraulic oil supply module, a natural gas supply module, a switch module, a temperature detection module, a first pipeline, a second pipeline and a third pipeline. The device comprises a hydraulic oil supply module, a natural gas supply module, a third pipeline, a switch module and a temperature detection module, wherein the hydraulic oil supply module is connected with the natural gas supply module through a first pipeline and used for providing hydraulic oil for the natural gas supply module, the third pipeline is connected with a second pipeline and used for conveying cooling liquid in the cooling liquid supply module to the second pipeline, the second pipeline is attached to the first pipeline, so that the cooling liquid in the second pipeline is heated by the hydraulic oil in the first pipeline, the switch module is arranged on the third pipeline and used for blocking or conducting the cooling liquid flowing into the second pipeline, the ECU is respectively connected with the switch module and the temperature detection module and used for acquiring the temperature of the hydraulic oil detected by the temperature detection module in the first pipeline, and when the temperature of the hydraulic oil is smaller than or equal to a preset threshold value, the switch module is controlled to be switched on, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline. This vehicle passes through the coolant liquid and heats hydraulic oil, solves under microthermal weather condition, and the hydraulic oil temperature is crossed lowly, leads to the increase of the moment that the rotatable parts of hydraulic pump receives to cause the problem of damage to the hydraulic pump.
On the basis of the above embodiment, fig. 3 is a schematic structural diagram of a second vehicle embodiment provided in the embodiments of the present application. As shown in fig. 3, the vehicle further includes: a fourth conduit 301.
The fourth pipeline 301 is used for connecting the natural gas supply module 204 and the cooling liquid supply module 202, and conveying the cooling liquid in the cooling liquid supply module 202 to the natural gas supply module 204; the cooling fluid is also used to heat the lng in the natural gas supply module 204 to convert the lng to gasified natural gas.
Specifically, the fourth pipeline 301 is disposed between the natural gas supply module 204 and the cooling liquid supply module 202, and forms a circulation with the second pipeline 208 and the third pipeline 209, that is, the cooling liquid sent from the cooling liquid supply module 202 flows into the second pipeline 208 through the third pipeline 209 (at this time, the hydraulic oil in the first pipeline 207 is heated), and then returns to the cooling liquid supply module 202 through the fourth pipeline 301, so that the cooling liquid is circulated and used.
Further, after the above treatment, the temperature of the coolant is reduced, and at this time, the coolant can be directly used for cooling the engine, and specific heat dissipation treatment can be performed without a radiator.
Optionally, as shown in fig. 3, the vehicle further includes: a diesel supply module 302, an engine 303, and a coolant circulation conduit 307.
The coolant circulation pipeline 307 is used for cooling the engine 303 and providing coolant for the coolant supply module 202; the engine 303 is respectively connected with a diesel supply module 302 and a cooling liquid supply module 202, and the diesel supply module 302 is used for supplying diesel to the engine 303; when the engine 303 is started, the coolant supply module 202 is configured to deliver the coolant after the engine 303 is cooled to the third pipe 209, that is, an interface communicating with the coolant supply module 202 is provided in the coolant circulation pipe 307, and is configured to deliver the coolant having heat to the coolant supply module 202, so that the coolant is driven into the third pipe 209.
Specifically, when the vehicle is warmed up, the diesel supply module 302 supplies diesel (fuel) to the cylinder of the engine 303, and then the engine 303 enters a preheating state, at this time, the engine 303 generates heat, and in order to avoid the damage to the engine 303 and related devices due to high temperature, the coolant in the coolant circulation pipe 307 cools the engine 303, that is, the coolant circulation pipe 307 is disposed on the engine 303, and the coolant flows in the coolant circulation pipe 307 and constantly takes away the heat generated by the engine 303.
Further, the coolant supply module 202 pumps part of the coolant, which takes away heat of the engine 303, into the third pipe 209, and the hydraulic oil flows from the third pipe 209 into the second pipe 208 for warming the hydraulic oil in the first pipe 207.
Optionally, the vehicle may further include: a thermostat and a radiator (not shown in fig. 3) connected to the coolant circulation pipe 307, that is, after the coolant absorbs heat of the engine, the radiator is used to cool the coolant, and then the cooled coolant is sent to the coolant circulation pipe 307, and the thermostat is used to adjust the flow rate of the coolant for cooling the engine.
Optionally, as shown in fig. 3, the vehicle further includes: a fifth pipe 304, a sixth pipe 305, and a seventh pipe 306.
The fifth pipeline 304 and the first pipeline 207 form a hydraulic oil internal circulation, and the natural gas supply module 204 is connected with the hydraulic oil supply module 203 through the fifth pipeline 304 and is used for pumping the pressurized hydraulic oil of the gasified natural gas back to the hydraulic oil supply module 203; the sixth pipe 305 is attached to the fifth pipe 304 so that the coolant in the sixth pipe 305 heats the hydraulic oil in the fifth pipe 304; the sixth pipe 305 and a coolant circulation pipe 307 in the engine 303 are connected by a seventh pipe 306 for pumping back the coolant in the sixth pipe 305 to the coolant circulation pipe through the seventh pipe 306; correspondingly, the seventh pipe 306 is also used for pumping the cooling liquid in the fourth pipe 301 back to the cooling liquid circulation pipe 307.
Specifically, in one possible implementation, after the hydraulic oil in the first pipeline 207 is used (the process is given by the following steps), the natural gas supply module 204 returns the hydraulic oil to the hydraulic oil supply module 203 through the fifth pipeline 304, since the hydraulic oil therein is recycled later and the temperature may not reach the first preset threshold, at this time, the sixth pipeline 305 (installed in the manner of the first pipeline 207 and the second pipeline 208 described above) is installed on the fifth pipeline 304, and is used for inputting the cooling liquid in the second pipeline 208 to the sixth pipeline 305, so as to heat the hydraulic oil in the fifth pipeline 304.
Further, when the engine 303 is running, the cooling liquid supply module 202 transmits cooling liquid containing heat to the natural gas supply module 204 through the fourth pipeline 301, so that the liquefied natural gas is heated and gasified into gasified natural gas, thereby supplying fuel to the engine 303; the seventh pipe 306 is used to recover the coolant that heats the first pipe 207 and the fifth pipe 304, and to recover the coolant that heats the natural gas supply module 204, that is, the seventh pipe 306 recovers the coolant that is driven into the third pipe 209 and the fourth pipe 301 via the coolant supply module 202.
In one possible implementation, the natural gas supply module 204 includes: a natural gas tank 2041 and a natural gas pressurizing device 2042 connected to the natural gas tank 2041.
The natural gas tank 2041 is used to store liquefied natural gas, and a gasification heat exchanger may be disposed at an outlet of the natural gas tank 2041 and is configured to receive heat from the coolant and gasify the liquefied natural gas into gasified natural gas; the natural gas pressurizing device 2042 is used to pressurize the gasified natural gas obtained by gasifying the liquefied natural gas in the natural gas tank 2041.
Further, the hydraulic oil supply module 203 supplies hydraulic oil to the natural gas pressurizing device 2042.
Wherein, the hydraulic oil supply module 203 includes: an oil tank 2031 and a hydraulic oil pressure device 2032 connected to the oil tank 2031;
the oil tank 2031 is used for storing hydraulic oil; the hydraulic oil pressurizing device 2032 is used for pumping hydraulic oil in the oil storage tank 2031 into the natural gas pressurizing device 2042 through the first pipeline 207, and provides power for the natural gas pressurizing device 2042.
Alternatively, the power of the coolant supply module 202 and the power of the hydraulic oil pressurizing device 2032 may be provided by the engine 303, and may be specifically controlled by the ECU 201, for example, the ECU 201 may control the engine 303 to provide power of a certain value to the coolant supply module 202 and the power of the hydraulic oil pressurizing device 2032, or the ECU 201 may directly control the power of the coolant supply module 202 and the power of the hydraulic oil pressurizing device 2032.
The vehicle that this application embodiment provided, on the basis of above-mentioned embodiment, this vehicle still includes: the natural gas supply module comprises a natural gas tank and a natural gas pressurizing device connected with the natural gas tank; the hydraulic oil supply module comprises an oil storage tank and a hydraulic oil pressurizing device connected with the oil storage tank. Specifically, the fourth pipeline is used for connecting the natural gas supply module and the cooling liquid supply module, and conveying the cooling liquid in the cooling liquid supply module to the natural gas supply module, and the cooling liquid is also used for heating the liquefied natural gas in the natural gas supply module, so that the liquefied natural gas is converted into the gasified natural gas. In addition, the engine is respectively connected with a diesel oil supply module and a cooling liquid supply module, the diesel oil supply module is used for supplying diesel oil to the engine, and after the engine is started, the cooling liquid in the cooling liquid supply module is used for cooling the engine. Furthermore, a fifth pipeline and the first pipeline form a hydraulic oil internal circulation, the natural gas supply module is connected with the hydraulic oil supply module through the fifth pipeline and used for pumping pressurized hydraulic oil of the gasified natural gas back to the hydraulic oil supply module, the sixth pipeline is attached to the fifth pipeline and used for heating the hydraulic oil in the fifth pipeline by cooling liquid in the sixth pipeline, the sixth pipeline is connected with a cooling liquid circulating pipeline in the engine through a seventh pipeline and used for pumping the cooling liquid in the sixth pipeline back to the cooling liquid circulating pipeline through the seventh pipeline, and the seventh pipeline passes through the natural gas supply module and used for heating the liquefied natural gas in the natural gas supply module so that the liquefied natural gas is converted into the gasified natural gas. And then, the natural gas tank is used for storing liquefied natural gas, the natural gas pressurizing device is used for pressurizing the gasified natural gas after the liquefied natural gas in the natural gas tank is gasified, and correspondingly, the hydraulic oil supply module is used for providing hydraulic oil for the natural gas pressurizing device. The oil storage tank is used for storing hydraulic oil, and the hydraulic oil is suppressed the device and is used for passing through first pipeline with the hydraulic oil in the oil storage tank, squeezes the device into the natural gas. After the devices are added, the vehicle provides conditions for the recycling of cooling liquid, saves energy, improves the lubrication degree of hydraulic oil under the low-temperature condition, and provides a foundation for avoiding possible damage to power parts of a hydraulic oil pressurizing device.
On the basis of the vehicle provided in the embodiment of the present application, fig. 4 is a schematic flow chart of a first embodiment of a method for preheating hydraulic oil provided in the embodiment of the present application. As shown in fig. 4, the method for preheating hydraulic oil may include the steps of:
and 41, acquiring the temperature of the hydraulic oil in the first pipeline measured by the temperature detection module.
The first pipeline is a pipeline for connecting the hydraulic oil supply module and the natural gas supply module.
For example, in the structural schematic diagram of the vehicle embodiment, the hydraulic oil pressurizing pump is driven by the engine to pump the hydraulic oil in the oil storage tank into the natural gas pressurizing device to provide power for the natural gas pressurizing device, so that the natural gas pressurizing device provides pressure for gasifying natural gas, and further the engine can be supplied with fuel, that is, the engine and diesel oil form an HPDI dual-fuel mode together.
Wherein, under the low temperature scene, when the hydraulic oil of hydraulic oil pressurizing pump in with the oil storage tank is squeezed into to the natural gas pressure device (through first pipe connection hydraulic oil pressurizing pump and natural gas pressure device), because the temperature of hydraulic oil is lower, viscosity is great, in order to make the flow of the hydraulic oil of beating into to the natural gas pressure device normal, need increase the power of hydraulic oil pressurizing pump, also the moment that the hydraulic oil pressurizing pump receives sharply increases promptly to cause the rotating member damage of hydraulic oil pressurizing pump easily.
At this time, by providing a temperature detection module (e.g., a temperature sensor, etc.) at the first pipe, the ECU acquires the temperature of the hydraulic oil in the first pipe in real time, and performs step 42 described below.
And 42, when the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, controlling the switch module to be opened, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline.
The switch module is arranged on a third pipeline between the cooling liquid supply module and the second pipeline and used for blocking or conducting the cooling liquid flowing into the second pipeline, and the second pipeline is attached to the first pipeline.
Optionally, the first preset threshold may be set according to an influence of the hydraulic oil on a rotating component of the hydraulic oil pressurizing pump along with a change of temperature, and may be obtained through an experiment or according to a related manner in the above embodiment.
In a possible implementation, when the temperature of the hydraulic oil is less than or equal to the first preset threshold, that is, the temperature of the hydraulic oil is low, which may affect the rotating component of the hydraulic oil pressurizing pump, at this time, a switch module (e.g., a valve) disposed on the third pipeline is opened, and the coolant that cools the engine is pumped into the second pipeline from the coolant supply module through the third pipeline, so that the coolant in the second pipeline heats the hydraulic oil in the first pipeline, so that the temperature of the hydraulic oil is greater than the first preset threshold, and the rotating component of the hydraulic oil pressurizing pump is not affected.
In another possible implementation after step 41, when the temperature of the hydraulic oil is greater than the first preset threshold, the control switch module is turned off, so that the cooling liquid in the cooling liquid supply module stops heating the hydraulic oil in the first pipeline.
Optionally, when the temperature of the hydraulic oil is greater than a first preset threshold value, the rotating component of the hydraulic oil pressurizing pump is in a normal operation state, and the switch module is turned off at this time, and with reference to fig. 3, it can be known that the coolant only provides heat for the gasification heat exchanger at the outlet of the natural gas tank, and is used for heating the liquefied natural gas to the gasified natural gas.
In addition, the method for preheating the hydraulic oil may further include the steps of:
step 1, obtaining the temperature of cooling liquid in a cooling liquid supply module, the pressure of gasified natural gas in a natural gas supply module and the liquid level of liquefied natural gas in a natural gas tank in the natural gas supply module.
In this solution, the purpose of preheating the hydraulic oil is to put the engine in HPDI two-charge mode so that the vehicle is in normal running condition, so in this method, the temperature of the coolant in the coolant supply module, the pressure of the gasified natural gas in the natural gas supply module and the liquefied natural gas level of the natural gas tank in the natural gas supply module can also be obtained.
Specifically, a temperature sensor may be disposed at the coolant supply module, and is used for detecting the temperature of the coolant in the coolant supply module to obtain the operating condition of the engine, determine whether the temperature can provide heat for the hydraulic oil, and provide heat for the liquefied natural gas; a pressure sensor may be provided in the natural gas supply module for detecting whether the pressure of the gasified natural gas is in compliance with the pressure of the natural gas in the HPDI dual feed mode (e.g., 30 Mpa); a liquid level related sensor, a pressure sensor or the like (the purpose of which is to measure) may be provided on the natural gas tank in the natural gas supply module, in order to avoid that the residual amount of the liquefied natural gas is too low, which may affect the start or operation of the vehicle.
And 2, when the temperature of the hydraulic oil is greater than a first preset threshold value, the temperature of the cooling liquid is greater than a second preset threshold value, the pressure of the gasified natural gas is greater than a third preset threshold value, and the liquid level of the liquefied natural gas is greater than a fourth preset threshold value, controlling the gasified natural gas and diesel oil in the diesel oil tank to be sprayed to a cylinder of the engine.
Optionally, after the requirement of the step is met, regarding that relevant devices or starting conditions of the vehicle meet the HPDI dual mode, at this time, the ECU controls the natural gas supply module to inject the gasified natural gas to a cylinder of the engine at a certain pressure, and simultaneously, the diesel oil in the diesel oil supply module is injected to the cylinder to assist the gasified natural gas to be combusted, so as to provide power for the vehicle.
It should be understood that the temperature of the hydraulic oil, the temperature of the coolant, the pressure of the gasified natural gas, the liquid level of the liquefied natural gas, and the like are only examples, and other operating conditions should be satisfied in a normal state of the engine operation, and are not described here.
And 3, controlling diesel oil in the diesel oil tank to be sprayed to the cylinders of the engine when at least one preset condition is met.
Wherein the preset conditions include: the temperature of the hydraulic oil is less than or equal to a first preset threshold value, the temperature of the cooling liquid is less than or equal to a second preset threshold value, the pressure of the gasified natural gas is less than or equal to a third preset threshold value, and the liquid level of the liquefied natural gas is less than or equal to a fourth preset threshold value.
In this step, each of the preset conditions has a certain influence on the operation of the engine, and if one condition is not met, the ECU controls the diesel oil in the diesel oil tank to be injected into the cylinder of the engine, so that the engine is in a warm-up stage, and the engine cannot normally provide power for the operation of the vehicle.
It will be appreciated that each of the above preset conditions is also related to the type of vehicle, for example, the third preset threshold varies with the demand of the in-cylinder direct injection natural gas pressure from different vehicle engines.
According to the method for preheating the hydraulic oil, the temperature of the hydraulic oil in the first pipeline measured by the temperature detection module is obtained, the first pipeline is a pipeline connecting the hydraulic oil supply module and the natural gas supply module, and when the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, the switch module is controlled to be switched on, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline. Among this technical scheme, heat hydraulic oil through utilizing the coolant liquid to solved under microthermal weather condition, the hydraulic oil temperature is crossed lowly, leads to the rotating member moment that receives of hydraulic pump to increase, thereby causes the problem of damage to the hydraulic pump.
Further, referring to fig. 3, fig. 5 is a schematic flow chart of a second embodiment of the method for preheating hydraulic oil according to the present application. As shown in fig. 5, the general flow of the hydraulic oil preheating method may include the following steps:
step 1, determining that the working condition of an engine is normal;
step 2, judging that the temperature of the hydraulic oil is greater than a first preset threshold value, the temperature of the cooling liquid is greater than a second preset threshold value, the pressure of the gasified natural gas is greater than a third preset threshold value, and the liquid level of the liquefied natural gas is greater than a fourth preset threshold value, if yes, executing step 9; if not, executing the step 3;
step 3, controlling the engine to be in a pure diesel mode;
step 4, judging whether the temperature of the hydraulic oil is greater than a first preset threshold value or not, and if not, executing step 5; if yes, executing step 7;
step 5, opening a switch module (such as a temperature control valve);
step 6, controlling the engine coolant to flow to pipelines (a second pipeline and a sixth pipeline) attached to hydraulic oil pipelines (a first pipeline and a fifth pipeline) through a coolant supply module, heating the hydraulic oil to a first preset threshold value, and then returning to the step 2;
step 7, closing the switch module;
step 8, heating the vehicle by the engine, and then returning to the step 2;
9, enabling the engine to enter an HPDI (hybrid fuel injection) double-material mode;
and step 10, controlling the engine coolant to pass through the coolant supply module to supply heat to the gasification heat exchanger of the natural gas tank.
According to the method for preheating the hydraulic oil, firstly, the working condition of an engine is determined to be normal, the temperature of the hydraulic oil is judged to be greater than a first preset threshold value, the temperature of cooling liquid is greater than a second preset threshold value, the pressure of gasified natural gas is greater than a third preset threshold value, and the liquid level of liquefied natural gas is greater than a fourth preset threshold value, when the conditions are met, an HPDI double-material mode is entered, the cooling liquid only supplies heat for a gasification heat exchanger of a natural gas tank, and therefore the gasification of the natural gas is achieved; if one of the conditions is not met, controlling the engine to be in a pure diesel mode, judging whether the temperature of the hydraulic oil is greater than a first preset threshold value or not in real time, and if not, turning on a switch module to enable the cooling liquid to be the hydraulic oil and be heated to be above the first preset threshold value; if the engine temperature reaches the preset temperature, the engine is continuously heated, and whether the conditions are met is judged again. According to the technical scheme, the temperature of the hydraulic oil is used, the temperature of the cooling liquid, the pressure of the gasified natural gas and the liquid level of the liquefied natural gas are combined, normal operation of the engine is achieved, namely, the engine enters an HPDI (high pressure direct injection) double-material mode, and damage to the hydraulic oil pressurizing pump possibly caused under the low-temperature condition is avoided.
On the basis of the above embodiment of the hydraulic oil preheating method, fig. 6 is a schematic structural diagram of a hydraulic oil preheating device according to an embodiment of the present application. As shown in fig. 6, the warm-up device is applied to an ECU in a vehicle, and includes: an acquisition module 61 and a processing module 62;
the acquisition module 61 is configured to acquire the temperature of the hydraulic oil in a first pipeline, which is measured by the temperature detection module, where the first pipeline is a pipeline connecting the hydraulic oil supply module and the natural gas supply module;
and the processing module 62 is configured to control the switch module to be turned on when the temperature of the hydraulic oil is less than or equal to a first preset threshold, so that the hydraulic oil in the first pipeline is heated by the cooling liquid in the cooling liquid supply module, the switch module is disposed on a third pipeline between the cooling liquid supply module and the second pipeline, and is configured to block or conduct the cooling liquid flowing into the second pipeline, and the second pipeline is attached to the first pipeline.
In a possible design of the embodiment of the present application, the processing module 62 is further configured to control the switch module to turn off when the temperature of the hydraulic oil is greater than a first preset threshold, so that the cooling liquid in the cooling liquid supply module stops heating the hydraulic oil in the first pipeline.
In yet another possible design of the embodiment of the present application, the obtaining module 61 is further configured to obtain a temperature of the cooling liquid in the cooling liquid supply module, a pressure of the gasified natural gas in the natural gas supply module, and a liquefied natural gas liquid level of the natural gas tank in the natural gas supply module;
the processing module 62 is further configured to control the gasified natural gas and the diesel oil in the diesel oil tank to be sprayed to the cylinder of the engine when the temperature of the hydraulic oil is greater than a first preset threshold, the temperature of the cooling liquid is greater than a second preset threshold, the pressure of the gasified natural gas is greater than a third preset threshold, and the liquid level of the liquefied natural gas is greater than a fourth preset threshold.
In this possible design, the processing module 62 is further configured to control the diesel in the diesel tank to be injected to the cylinders of the engine when at least one of the following preset conditions is met, the preset conditions including: the temperature of the hydraulic oil is less than or equal to a first preset threshold value, the temperature of the cooling liquid is less than or equal to a second preset threshold value, the pressure of the gasified natural gas is less than or equal to a third preset threshold value, and the liquid level of the liquefied natural gas is less than or equal to a fourth preset threshold value.
The preheating device for hydraulic oil provided by the embodiment of the application can be used for executing the technical scheme corresponding to the preheating method for hydraulic oil in the embodiment, the implementation principle and the technical effect are similar, and the details are not repeated herein.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
Fig. 7 is a schematic structural diagram of an ECU provided in an embodiment of the present application. As shown in fig. 7, the ECU may include: a processor 71, a memory 72, and computer program instructions stored on the memory 72 and operable on the processor 71.
The processor 71 executes computer-executable instructions stored by the memory 72, causing the processor 71 to perform the aspects of the embodiments described above. The processor 71 may be a general-purpose processor including a central processing unit CPU, a Network Processor (NP), and the like; but also a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
The memory 72 is connected to the processor 71 via a system bus and communicates with each other, and the memory 71 is used for storing computer program instructions.
In one possible implementation, the ECU may further include: a transceiver, which corresponds to the acquisition module 61 in fig. 6.
The system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The ECU provided in the embodiment of the present application may be used to execute the technical solution corresponding to the method for preheating the hydraulic oil in the foregoing embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.
The embodiment of the application further provides a chip for operating the instruction, and the chip is used for executing the technical scheme of the preheating method for the hydraulic oil in the embodiment.
The embodiment of the present application further provides a computer-readable storage medium, where a computer instruction is stored in the computer-readable storage medium, and when the computer instruction runs on a computer, the computer is enabled to execute the technical solution of the method for preheating hydraulic oil in the foregoing embodiment.
The embodiment of the present application further provides a computer program product, which includes a computer program, and the computer program is used for executing the technical solution of the method for preheating hydraulic oil in the foregoing embodiment when being executed by a processor.
The computer-readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. The readable storage medium may be any available medium that can be accessed by a general purpose or special purpose ECU.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A vehicle, characterized by comprising: the system comprises an electronic control unit ECU, a cooling liquid supply module, a hydraulic oil supply module, a natural gas supply module, a switch module, a temperature detection module, a first pipeline, a second pipeline and a third pipeline;
the hydraulic oil supply module is connected with the natural gas supply module through the first pipeline and used for providing hydraulic oil for the natural gas supply module;
the third pipeline is connected with the second pipeline and used for conveying the cooling liquid in the cooling liquid supply module to the second pipeline;
the second pipeline is attached to the first pipeline, so that the cooling liquid in the second pipeline heats the hydraulic oil in the first pipeline;
the switch module is arranged on the third pipeline and used for blocking or conducting the cooling liquid flowing into the second pipeline;
the ECU is connected with the switch module and the temperature detection module respectively and is used for acquiring the temperature of the hydraulic oil in the first pipeline detected by the temperature detection module, and when the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, the switch module is controlled to be turned on, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline.
2. The vehicle of claim 1, further comprising: a fourth conduit;
the fourth pipeline is used for connecting the natural gas supply module and the cooling liquid supply module and conveying the cooling liquid in the cooling liquid supply module to the natural gas supply module;
the cooling liquid is also used for heating the liquefied natural gas in the natural gas supply module, so that the liquefied natural gas is converted into gasified natural gas.
3. The vehicle of claim 2, further comprising: a diesel supply module, an engine and a coolant circulation conduit;
the cooling liquid circulating pipeline is used for cooling the engine and providing cooling liquid for the cooling liquid supply module;
the engine is respectively connected with the diesel oil supply module and the cooling liquid supply module, and the diesel oil supply module is used for supplying diesel oil to the engine;
and after the engine is started, the cooling liquid supply module is used for conveying the cooling liquid after the temperature of the engine is reduced to the third pipeline.
4. The vehicle of claim 3, further comprising: a fifth pipeline, a sixth pipeline, and a seventh pipeline;
the fifth pipeline and the first pipeline form hydraulic oil internal circulation, and the natural gas supply module is connected with the hydraulic oil supply module through the fifth pipeline and used for pumping the pressurized hydraulic oil of the gasified natural gas back to the hydraulic oil supply module;
the sixth pipeline is attached to the fifth pipeline, so that the cooling liquid in the sixth pipeline heats the hydraulic oil in the fifth pipeline;
the sixth pipe and a coolant circulation pipe in the engine are connected by the seventh pipe, for returning the coolant in the sixth pipe to the coolant circulation pipe through the seventh pipe;
correspondingly, the seventh pipeline is also used for pumping the cooling liquid in the fourth pipeline back to the cooling liquid circulating pipeline.
5. The vehicle of claim 2, wherein the natural gas supply module comprises: the natural gas pressurization device comprises a natural gas tank and a natural gas pressurization device connected with the natural gas tank;
the natural gas tank is used for storing the liquefied natural gas;
the natural gas pressurizing device is used for pressurizing the gasified natural gas after the liquefied natural gas in the natural gas tank is gasified;
correspondingly, the hydraulic oil supply module provides hydraulic oil for the natural gas pressurizing device.
6. The vehicle of claim 5, wherein the hydraulic oil supply module comprises: the hydraulic oil pressurizing device comprises an oil storage tank and a hydraulic oil pressurizing device connected with the oil storage tank;
the oil storage tank is used for storing the hydraulic oil;
the hydraulic oil pressurizing device is used for pumping hydraulic oil in the oil storage tank into the natural gas pressurizing device through the first pipeline.
7. A warm-up method of hydraulic oil, characterized by being applied to an ECU in a vehicle according to any one of claims 1 to 6, the method comprising:
the method comprises the steps of obtaining the temperature of hydraulic oil in a first pipeline measured by a temperature detection module, wherein the first pipeline is a pipeline connecting a hydraulic oil supply module and a natural gas supply module;
when the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, the switch module is controlled to be turned on, so that the cooling liquid in the cooling liquid supply module heats the hydraulic oil in the first pipeline, the switch module is arranged on a third pipeline between the cooling liquid supply module and a second pipeline and used for blocking or conducting the cooling liquid flowing into the second pipeline, and the second pipeline is attached to the first pipeline.
8. The method of claim 7, further comprising:
when the temperature of the hydraulic oil is greater than the first preset threshold value, the switch module is controlled to be turned off, and the cooling liquid in the cooling liquid supply module stops heating the hydraulic oil in the first pipeline.
9. The method of claim 8, further comprising:
acquiring the temperature of cooling liquid in a cooling liquid supply module, the pressure of gasified natural gas in a natural gas supply module and the liquefied natural gas liquid level of a natural gas tank in the natural gas supply module;
when the temperature of the hydraulic oil is larger than a first preset threshold value, the temperature of the cooling liquid is larger than a second preset threshold value, the pressure of the gasified natural gas is larger than a third preset threshold value, and the liquid level of the liquefied natural gas is larger than a fourth preset threshold value, the gasified natural gas and diesel oil in the diesel oil tank are controlled to be sprayed to a cylinder of the engine.
10. The method of claim 9, further comprising:
controlling the diesel in the diesel tank to be injected to a cylinder of the engine when at least one of the following preset conditions is met, the preset conditions including: the temperature of the hydraulic oil is smaller than or equal to a first preset threshold value, the temperature of the cooling liquid is smaller than or equal to a second preset threshold value, the pressure of the gasified natural gas is smaller than or equal to a third preset threshold value, and the liquid level of the liquefied natural gas is smaller than or equal to a fourth preset threshold value.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401834A (en) * | 2016-06-23 | 2017-02-15 | 席瑾 | Low-temperature heating system for diesel engine |
| US20170159611A1 (en) * | 2015-12-04 | 2017-06-08 | Transfuels LLC | Liquid natural gas storage tank pressure control system |
| CN107061052A (en) * | 2016-12-05 | 2017-08-18 | 江苏弗莱因工程技术有限公司 | LNG supply systems |
| CN111287864A (en) * | 2018-12-10 | 2020-06-16 | 陕西重型汽车有限公司 | Automobile-used LNG feed system |
| CN212407193U (en) * | 2020-03-13 | 2021-01-26 | 广州大华德盛热管理科技股份有限公司 | Hydraulic oil preheating device |
| CN112303064A (en) * | 2020-10-30 | 2021-02-02 | 中煤科工集团西安研究院有限公司 | Diesel engine and hydraulic system composite temperature control system and method |
| CN112901339A (en) * | 2021-01-15 | 2021-06-04 | 河北工业大学 | Direct injection natural gas engine system based on ammonia pyrolysis device and control method thereof |
-
2021
- 2021-07-27 CN CN202110853331.XA patent/CN113482828A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170159611A1 (en) * | 2015-12-04 | 2017-06-08 | Transfuels LLC | Liquid natural gas storage tank pressure control system |
| CN106401834A (en) * | 2016-06-23 | 2017-02-15 | 席瑾 | Low-temperature heating system for diesel engine |
| CN107061052A (en) * | 2016-12-05 | 2017-08-18 | 江苏弗莱因工程技术有限公司 | LNG supply systems |
| CN111287864A (en) * | 2018-12-10 | 2020-06-16 | 陕西重型汽车有限公司 | Automobile-used LNG feed system |
| CN212407193U (en) * | 2020-03-13 | 2021-01-26 | 广州大华德盛热管理科技股份有限公司 | Hydraulic oil preheating device |
| CN112303064A (en) * | 2020-10-30 | 2021-02-02 | 中煤科工集团西安研究院有限公司 | Diesel engine and hydraulic system composite temperature control system and method |
| CN112901339A (en) * | 2021-01-15 | 2021-06-04 | 河北工业大学 | Direct injection natural gas engine system based on ammonia pyrolysis device and control method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 阎国超: "《炼油化工工艺及设备概论》", 31 July 1998, 石油大学出版社 * |
| 马锡廷: "《化工机械基础》", 31 August 1988, 成都科技大学出版社 * |
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Application publication date: 20211008 |