CN112012864A - Preheating system of multi-working-mode locomotive and control method thereof - Google Patents
Preheating system of multi-working-mode locomotive and control method thereof Download PDFInfo
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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
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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Abstract
The invention discloses a preheating system of a multi-working-mode locomotive and a control method thereof, wherein the preheating system comprises a fuel tank, a preheater, a water pump, a first electromagnetic valve, a second electromagnetic valve, a stop valve, a controller, a stop valve, a first temperature sensor, a second temperature sensor, a diesel engine working detection unit, a working mode judgment unit, a heat preservation state setting unit and a time setting unit; the stop valve, the cab water heating system and the second electromagnetic valve are connected in series between the outlet of the water outlet pipe and the inlet of the water return pipe; the output ends of the first temperature sensor, the second temperature sensor, the diesel engine working detection unit, the working mode judgment unit, the heat preservation state setting unit, the time setting unit and the stop valve are all electrically connected with the input end of the controller; the control ends of the preheater, the first electromagnetic valve and the second electromagnetic valve are electrically connected with the output end of the controller. The invention can solve various preheating problems of the multi-working-mode locomotive and improve the emission standard of the locomotive.
Description
Technical Field
The invention belongs to the field of rail transit, and particularly relates to a preheating system of a locomotive with multiple working modes and a control method thereof.
Background
Diesel locomotive is owing to use the diesel engine, when ambient temperature is lower, in order to make the easy start of diesel engine, and in order to reduce wearing and tearing, often uses fuel oil preheater to preheat the cooling water of diesel engine in advance to lifting machine oil temperature, the start-up of being convenient for.
However, for locomotives with multiple working modes, for example, locomotives towed by multiple energy sources such as diesel engines, storage batteries, catenary systems, etc., the conventional preheating system for diesel locomotives cannot meet preheating requirements in different modes.
In addition, in order to promote emission standard, the diesel engine tail gas has used urea clean system, and urea can crystallize when low temperature environment, consequently at the diesel engine initial working phase, and urea clean system can't normally work, leads to initial stage's emission not up to standard.
Disclosure of Invention
The invention aims to provide a preheating system of a multi-working-mode locomotive and a control method thereof, aiming at the preheating problem of each system before the diesel engine is started in the multi-working-mode locomotive and the emission standard improvement problem of the locomotive, so that the multi-preheating problem of the multi-working-mode locomotive can be solved, and the emission standard of the locomotive is improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a preheating system of a locomotive with multiple working modes comprises a fuel tank, a preheater, a water pump, a first electromagnetic valve, a second electromagnetic valve and a stop valve, wherein a circulating oil circuit is connected between the fuel tank and the preheater, the water outlet end of the preheater is communicated with the inlet of a water outlet pipe through the water pump, the water return end of the preheater is communicated with the outlet of a water return pipe, a diesel engine water cooling system is connected between the outlet of the water outlet pipe and the inlet of the water return pipe, a urea tank water heating system and the first electromagnetic valve are connected between the outlet of the water outlet pipe and the inlet of the water return pipe in series, a cab water heating system and the second electromagnetic valve are connected between the outlet of the water outlet pipe and the inlet of the water return pipe in series, and the preheating system is characterized by further comprising a controller, the stop valve, a first temperature sensor for detecting the temperature of urea in the urea tank, the system comprises a working mode judging unit for judging the running mode of the locomotive, a heat preservation state setting unit for setting whether a preheater is heat-preserved or not and a time setting unit for setting the starting time of a cab water heating system; the stop valve, the cab water heating system and the second electromagnetic valve are connected in series between the outlet of the water outlet pipe and the inlet of the water return pipe; the output ends of the first temperature sensor, the second temperature sensor, the diesel engine working detection unit, the working mode judgment unit, the heat preservation state setting unit, the time setting unit and the stop valve are all electrically connected with the input end of the controller; the control ends of the preheater, the first electromagnetic valve and the second electromagnetic valve are electrically connected with the output end of the controller.
Based on the same inventive concept, the invention also provides a control method of the preheating system of the multi-working-mode locomotive, which is characterized by comprising the following steps:
the controller controls whether the preheater works and controls the on-off state of the first electromagnetic valve and the second electromagnetic valve according to the locomotive running mode judged by the working mode judging unit, the detection temperature of the first temperature sensor, the detection temperature of the second temperature sensor, the detection signal of the diesel engine working detection unit, whether the heat preservation state setting unit sets the heat preservation of the preheater, the starting time of the cab water heating system set by the time setting unit and the on-off state of the stop valve.
As a preferable mode, if the operation mode determination unit determines that the operation mode of the locomotive is the grid mode or the battery mode, the second solenoid valve is controlled to be turned off, and at the same time:
the controller judges whether a heat preservation signal sent by the heat preservation state setting unit is received or not, and if not, the preheater is controlled to stop working;
if the temperature signal detected by the second temperature sensor is smaller than a set value T1, the controller controls the preheater to work and controls the first electromagnetic valve to be opened; when the temperature signal detected by the second temperature sensor is greater than a set value T2, the controller controls the preheater to stop working and controls the first electromagnetic valve to be switched off; wherein T2 > T1.
As a preferable mode, if the operation mode determination unit determines that the operation mode of the locomotive is a diesel mode or a hybrid mode, where the hybrid mode is a diesel and battery hybrid operation mode, then:
when the temperature signal detected by the second temperature sensor is smaller than a set value T1, the controller controls the preheater to work and controls the first electromagnetic valve to be opened; when the temperature signal detected by the second temperature sensor is greater than a set value T2, the controller controls the preheater to stop working and controls the first electromagnetic valve to be switched off; wherein T2 > T1;
and after the temperature signal detected by the second temperature sensor is greater than a set value T2 and the controller receives a diesel engine starting working signal sent by the diesel engine working detection unit, if the controller detects that the stop valve is in an open state, the second electromagnetic valve is controlled to be opened.
As a preferable mode, if the operation mode determination means determines that the operation mode of the locomotive is the in-cabin mode, after the time of activation of the cab water heating system set by the arrival time setting means:
when the temperature signal detected by the second temperature sensor is less than a set value T2, the controller controls the preheater to work;
when the temperature signal detected by the first temperature sensor is less than a set value T1, the controller controls the first electromagnetic valve to be opened;
when the stop valve is in an open state, controlling the second electromagnetic valve to open;
when the temperature signal detected by the second temperature sensor is greater than a set value T3, controlling the preheater to stop working and controlling the second electromagnetic valve to be switched off;
when the temperature signal detected by the first temperature sensor is greater than a set value T2, the controller controls the first electromagnetic valve to be turned off;
wherein T3 > T2 > T1.
As a preferred mode, the preheater is activated only once.
In a preferred embodiment, T1 is 10 ℃, T2 is 20 ℃ and T3 is 60 ℃.
Compared with the prior art, the invention has the following beneficial effects:
1) the controller is a preheating centralized control system of a multi-working mode locomotive, and adopts digital quantity and analog quantity input/output signals to realize preheating of a driver cab, a urea box and a diesel engine under various locomotive working conditions.
2) Simple control equipment such as an electromagnetic valve is added in the water circulation preheating loop, and the work of the controller under various working conditions is effectively matched.
3) The internal temperature control logic of the diesel engine, the cab and the urea box and the interrelation among the three are reasonably set under multiple working modes of the locomotive, and three reasonable control temperatures are set, so that the control logic is simplified while the preheating of different equipment is met.
Drawings
FIG. 1 is a schematic diagram of a preheating loop of the preheating system of the present invention.
Fig. 2 is a schematic diagram of an electric control structure of the preheating system of the present invention.
FIG. 3 is a schematic diagram of input and output signals of the preheating system according to the present invention.
FIG. 4 is a flowchart of a control method of the preheating system according to the present invention.
The system comprises a fuel tank 1, a preheater 2, a water pump 3, a first electromagnetic valve 4, a second electromagnetic valve 5, a stop valve 6, a water outlet pipe 7, a water return pipe 8, a diesel engine water cooling system 9, a urea tank water heating system 10, a cab water heating system 11, a controller 12, a first temperature sensor 14, a second temperature sensor 15, a diesel engine work detection unit 16, a work mode determination unit 17, a heat preservation state setting unit 18, a time setting unit 19, an oil inlet pipe 20 and an oil return pipe 21.
Detailed Description
As shown in fig. 1 and 2, the preheating system of the multi-working-mode locomotive includes a fuel tank 1, a preheater 2, a water pump 3, a first electromagnetic valve 4, a second electromagnetic valve 5 and a stop valve 6, a circulating oil circuit is connected between the fuel tank 1 and the preheater 2, a water outlet end of the preheater 2 is communicated with an inlet of a water outlet pipe 7 through the water pump 3, a water return end of the preheater 2 is communicated with an outlet of a water return pipe 8, a diesel engine water cooling system 9 is connected between an outlet of the water outlet pipe 7 and an inlet of the water return pipe 8, a urea tank water heating system 10 and the first electromagnetic valve 4 are connected in series between the outlet of the water outlet pipe 7 and the inlet of the water return pipe 8, and a cab water heating system 11 and the second electromagnetic valve 5 are connected in series.
The preheating system of the multi-working-mode locomotive further comprises a controller 12, a stop valve 6, a first temperature sensor 14 for detecting the temperature of urea in a urea box, a second temperature sensor 15 for detecting the temperature of cooling liquid in a diesel water cooling system 9, a diesel work detection unit 16 for detecting whether a diesel works, a working mode determination unit 17 for determining the running mode of the locomotive, a heat preservation state setting unit 18 for setting whether the preheater 2 is heat preserved, and a time setting unit 19 for setting the starting time of a cab water heating system 11; the stop valve 6, the cab water heating system 11 and the second electromagnetic valve 5 are connected in series between the outlet of the water outlet pipe 7 and the inlet of the water return pipe 8; the output ends of the first temperature sensor 14, the second temperature sensor 15, the diesel engine work detection unit 16, the work mode judgment unit 17, the heat preservation state setting unit 18, the time setting unit 19 and the stop valve 6 are all electrically connected with the input end of the controller 12; the control ends of the preheater 2, the first electromagnetic valve 4 and the second electromagnetic valve 5 are all electrically connected with the output end of the controller 12.
In fig. 1, a preheater 2 uses fuel combustion as a heat source and is connected to a fuel tank 1 of a locomotive through an inlet pipe 20 and an outlet pipe 21 to form a circulating oil circuit. The preheater 2 is connected with a diesel engine water cooling system 9 through a water outlet pipe 7 and a water return pipe 8 to form a loop, and heat is provided for equipment (a diesel engine, a cab and a urea box) needing preheating through heating cooling water of the diesel engine water cooling system 9. Wherein, urea case hot-water heating system 10 and driver's cabin hot-water heating system 11 entry have set up first solenoid valve 4 and second solenoid valve 5 respectively for the shutoff and the switch-on of control hot water, still set up stop valve 6 on the driver's cabin hot-water heating system 11 return circuit, stop valve 6 possesses the on-off state of signal of telecommunication output function (reflection stop valve 6).
As shown in fig. 3, the controller 12 is the core of the whole preheating system, and the output signal of the operation mode determination unit 17 adopts Digital Input (DI), which is "diesel mode", "mixed mode" (diesel and battery mixed operation mode), "grid mode", "battery mode", and "in-bank mode", respectively; the operation mode indicates that the locomotive is operated under the corresponding operating power.
The two analog input signals (AI) are the "coolant temperature" detected by the second temperature sensor 15 and the "urea tank temperature" detected by the first temperature sensor 14 (urea temperature sensor), respectively.
The 4-path digital quantity input signals (DI) are respectively 'diesel engine working', 'time setting', 'stop valve on-off' and 'heat preservation'.
"diesel engine works": the signal is obtained when the diesel engine is started.
"time setting": the heating timing of the cab water heating system 11 can be started by setting the time through the time setting unit 19 by the driver. For example: some users want to warm up the cab in advance before the driver enters the cab in the next morning, and the warm-up can be realized through the time setting function.
"stop valve on-off": the stop valve 6 is positioned on the cab preheating loop and is turned off and turned on by manual operation, and is usually turned off in summer and turned on in winter. The on-off state of the shutoff valve 6 has an electric signal output function.
The 'heat preservation' signal has the functions of: when the locomotive runs in a power grid mode or a storage battery mode, if the running time is long, the temperature of cooling liquid is continuously reduced because a diesel engine is in a stop state in a low-temperature environment, and once the traction is required in the diesel engine mode, the preheating time of the diesel engine is long, so that the locomotive cannot be started immediately; meanwhile, the temperature of the urea box is too low, and the urea solution may be crystallized and cannot be used immediately. If the controller 12 receives a "keep warm" signal (given by driver operation) at this time, the preheater 2 will still operate even if the locomotive operates in the grid mode or the battery mode, thereby ensuring that the diesel engine coolant and the urea solution are always in a keep warm state, i.e., in a hot standby state, and can be quickly put into use.
4-way digital quantity output signal (DO): comprises the working of the preheater 2, the stopping of the preheater 2 and the starting/stopping control of a first electromagnetic valve 4 and a second electromagnetic valve 5.
The invention also provides a control method of the preheating system of the multi-working-mode locomotive, which comprises the following steps:
the controller 12 controls whether the preheater 2 is operated and controls the on/off states of the first solenoid valve 4 and the second solenoid valve 5 according to the operation mode of the locomotive determined by the operation mode determination unit 17, the detection temperature of the first temperature sensor 14, the detection temperature of the second temperature sensor 15, the detection signal of the diesel engine operation detection unit 16, whether the heat preservation state of the preheater 2 is set by the heat preservation state setting unit 18, the start time of the cab water heating system 11 set by the time setting unit 19, and the on/off state of the stop valve 6.
As shown in fig. 4, the controller 12 first determines the operating mode of the locomotive, and the logic function is as follows:
if the operation mode determination unit 17 determines that the operation mode of the locomotive is the grid mode or the battery mode, the second electromagnetic valve 5 is controlled to be turned off, and at the same time:
the controller 12 judges whether a heat preservation signal sent by the heat preservation state setting unit 18 is received, and if not, the preheater 2 is controlled to stop working;
if yes, when the temperature signal detected by the second temperature sensor 15 is less than a set value T1, the controller 12 controls the preheater 2 to operate and controls the first electromagnetic valve 4 to open; when the temperature signal detected by the second temperature sensor 15 is greater than the set value T2, the controller 12 controls the preheater 2 to stop working and controls the first electromagnetic valve 4 to be turned off; wherein T2 > T1.
If the operation mode determination unit 17 determines that the operation mode of the locomotive is a diesel engine mode or a hybrid mode, where the hybrid mode is a hybrid operation mode of a diesel engine and a battery, then:
when the temperature signal detected by the second temperature sensor 15 is less than a set value T1, the controller 12 controls the preheater 2 to operate and controls the first electromagnetic valve 4 to open; when the temperature signal detected by the second temperature sensor 15 is greater than the set value T2, the controller 12 controls the preheater 2 to stop working and controls the first electromagnetic valve 4 to be turned off; wherein T2 > T1;
after the temperature signal detected by the second temperature sensor 15 is greater than the set value T2 and the controller 12 receives the diesel engine start operation signal sent by the diesel engine operation detecting unit 16, if the controller 12 detects that the stop valve 6 is in the open state, the second electromagnetic valve 5 is controlled to be opened.
If the operation mode determination unit 17 determines that the operation mode of the locomotive is the in-cabin mode, after the start time of the cab water heating system 11 set by the arrival time setting unit 19:
when the temperature signal detected by the second temperature sensor 15 is less than the set value T2, the controller 12 controls the preheater 2 to operate;
when the temperature signal detected by the first temperature sensor 14 is less than the set value T1, the controller 12 controls the first electromagnetic valve 4 to open;
when the stop valve 6 is in an open state, the second electromagnetic valve 5 is controlled to be opened;
when the temperature signal detected by the second temperature sensor 15 is greater than a set value T3, controlling the preheater 2 to stop working and controlling the second electromagnetic valve 5 to be switched off;
when the temperature signal detected by the first temperature sensor 14 is greater than the set value T2, the controller 12 controls the first electromagnetic valve 4 to be closed;
wherein T3 > T2 > T1.
Preferably, in the in-house mode, the preheater 2 is activated only once.
The above-mentioned T1 was 10 ℃, T2 was 20 ℃ and T3 was 60 ℃.
In summary, the control process and principle of the preheating system in each operating mode are as follows:
1) in the "grid mode" and the "battery mode", if the controller 12 does not receive the "keep warm" signal, it outputs a "preheater stop" signal; because in both modes, the locomotive does not currently require the diesel engine to operate, and therefore the preheater 2 does not need to be continuously operated, thereby reducing energy consumption.
If the driver gives a 'warm keeping' signal, then
1.1) the controller 12 detects the "coolant temperature": when the temperature is lower than T1 (for example, the temperature can be generally set to 10 ℃), outputting a signal of 'preheater work' to preheat the diesel engine water cooling system 9;
1.2) the controller 12 outputs a 'first electromagnetic valve' opening signal to preheat the urea box water heating system 10;
1.3) "the second solenoid valve" then turns off all the time, because under this mode, the driver's cabin can be realized preheating fast by electric air conditioner, does not need to carry out hot-water heating.
1.4) when the controller 12 detects that the "coolant temperature" is greater than T2 (for example, 20 ℃ can be generally set), outputting a "preheater stop" signal, and stopping heating of the diesel engine water cooling system 9; the controller 12 outputs a "first solenoid valve" turn-off signal, and the urea tank water heating system 10 stops heating.
2) In the diesel mode and the hybrid mode, then
2.1) the controller 12 firstly detects the 'cooling liquid temperature', and when the temperature is lower than T1 (for example, the temperature can be generally set to 10 ℃), a 'preheater working' signal is output to preheat the diesel engine water cooling system 9;
2.2) the controller 12 outputs a 'first electromagnetic valve' opening signal to preheat the urea box water heating system 10;
2.3) "the second solenoid valve" then closes all the time before the diesel engine opens, because the "coolant temperature" is only T2 degrees (can be generally set as 20 ℃) at most at this moment, take a long time just can warm up the cab.
2.4) when the controller 12 detects that the temperature of the cooling liquid is more than T2 (which can be generally set to 20 ℃), outputting a preheater stop signal, and stopping heating of the diesel engine water cooling system 9; the controller 12 outputs a "first solenoid valve" turn-off signal, and the urea tank water heating system 10 stops heating.
2.5) when the 'coolant temperature' is more than T2, the diesel engine can be started; after starting, the controller 12 receives a signal of 'diesel engine working', and the preheater 2 does not work any more at the moment, and preheating is realized by circulating water in the diesel engine water cooling system 9.
2.5.1) "opening and closing of the first solenoid valve" is determined by "urea tank temperature": when the "urea tank temperature" is less than T1 (which may be generally set to 10 ℃), the controller 12 outputs a "first electromagnetic valve" opening signal to preheat the urea tank water heating system 10;
2.5.2) when the 'urea box temperature' is more than T2 (which can be generally set to 20 ℃), a 'first electromagnetic valve' closing signal is output.
2.5.3) after the diesel engine is started, if the controller 12 detects that the stop valve is in an open state (in winter), a second electromagnetic valve opening signal is output, and circulating water of the diesel engine water cooling system 9 starts to continuously heat the cab water heating system 11; when the 'stop valve' is detected to be in the off state (summer), the 'second electromagnetic valve' opening signal is not output, and the heating of the cab water heating system 11 is not performed.
3) Locomotive 'mode in garage'
The "in-house mode" of the locomotive is a condition in which the locomotive is left standing in a parking lot and is not used for a short time, for example, from the time of next shift to the time of next morning before use. Since the locomotive is standing for the whole night, the temperature of the diesel engine cooling liquid is reduced to the environmental temperature in winter. If the diesel engine needs to be used in the next morning, the preheating process is long, and a driver needs to come to work in advance, so that the diesel engine water cooling system 9 is preheated in advance before the locomotive is formally used, and the diesel engine can be started and used immediately after the driver arrives.
The control of the locomotive 'in-garage mode' preheating is as follows:
if the controller 12 detects the "in-bank mode" and "time-set" signals, when the preset time is reached:
3.1) the controller 12 detects the 'cooling liquid temperature', and when the temperature is lower than T2 (generally set to be 20 ℃), a 'preheater working' signal is output to preheat the diesel engine water cooling system 9;
3.2) the controller 12 detects the temperature of the urea box, and when the temperature is lower than T1 (which can be generally set to be 10 ℃), outputs a first electromagnetic valve opening signal to preheat the urea box water heating system 10;
3.3) the controller 12 detects that the 'stop valve' is in an open state (in winter), outputs a 'second electromagnetic valve' opening signal, and the cab is heated.
3.4) when the controller 12 detects that the temperature of the cooling liquid is more than T3 (which can be generally set to 60 ℃), outputting a preheater stop signal, and stopping heating of the diesel engine water cooling system 9; meanwhile, a 'second electromagnetic valve' turn-off signal is output, and the cab water heating system 11 stops heating.
3.5) the controller 12 detects the 'temperature of the urea box', when the temperature is higher than T2 (generally can be set to 20 ℃), a 'first electromagnetic valve' turn-off signal is output, and the preheating of the urea box water heating system 10 is stopped;
6) when the primary preheating process is completed, the preheater 2 is not started.
The reason why the "coolant temperature" in the "in-cabin mode" is heated to T3 (which can be generally set to 60 ℃) is that the preheating in this mode has sufficient time, and the preheating temperature is high, which is beneficial to the heating effect of the cab. Since the driver will operate after warming up, possibly switching to other operating modes, only one warming up is performed.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides a preheating system of multi-working mode locomotive, including the fuel tank, a preheater, a water pump, first solenoid valve, the second solenoid valve, be connected into the circulation oil circuit between fuel tank and the preheater, the outlet end of preheater is linked together through the entry of water pump and outlet pipe, the return water end of preheater is linked together with the export of wet return, diesel engine water cooling system connects between the export of outlet pipe and the entry of wet return, urea case water heating system concatenates between the export of outlet pipe and the entry of wet return with first solenoid valve, cab water heating system concatenates between the export of outlet pipe and the entry of wet return with the second solenoid valve, its characterized in that:
the system comprises a urea tank, a controller, a stop valve, a first temperature sensor, a second temperature sensor, a diesel engine working detection unit, a working mode determination unit, a heat preservation state setting unit and a time setting unit, wherein the first temperature sensor is used for detecting the temperature of urea in the urea tank, the second temperature sensor is used for detecting the temperature of cooling liquid in a diesel engine water cooling system; the stop valve, the cab water heating system and the second electromagnetic valve are connected in series between the outlet of the water outlet pipe and the inlet of the water return pipe;
the output ends of the first temperature sensor, the second temperature sensor, the diesel engine working detection unit, the working mode judgment unit, the heat preservation state setting unit, the time setting unit and the stop valve are all electrically connected with the input end of the controller; the control ends of the preheater, the first electromagnetic valve and the second electromagnetic valve are electrically connected with the output end of the controller.
2. The method of claim 1 for controlling a pre-heating system of a multi-mode locomotive, comprising:
the controller controls whether the preheater works and controls the on-off state of the first electromagnetic valve and the second electromagnetic valve according to the locomotive running mode judged by the working mode judging unit, the detection temperature of the first temperature sensor, the detection temperature of the second temperature sensor, the detection signal of the diesel engine working detection unit, whether the heat preservation state setting unit sets the heat preservation of the preheater, the starting time of the cab water heating system set by the time setting unit and the on-off state of the stop valve.
3. The method of controlling a preheat system for a multi-mode locomotive according to claim 2, comprising:
if the working mode judging unit judges that the running mode of the locomotive is the power grid mode or the storage battery mode, the second electromagnetic valve is controlled to be switched off, and meanwhile:
the controller judges whether a heat preservation signal sent by the heat preservation state setting unit is received or not, and if not, the preheater is controlled to stop working;
if the temperature signal detected by the second temperature sensor is smaller than a set value T1, the controller controls the preheater to work and controls the first electromagnetic valve to be opened; when the temperature signal detected by the second temperature sensor is greater than a set value T2, the controller controls the preheater to stop working and controls the first electromagnetic valve to be switched off; wherein T2 > T1.
4. The method of controlling a preheat system for a multi-mode locomotive according to claim 2, comprising:
if the working mode judging unit judges that the running mode of the locomotive is a diesel engine mode or a mixed mode, wherein the mixed mode is a mixed working mode of a diesel engine and a storage battery, then:
when the temperature signal detected by the second temperature sensor is smaller than a set value T1, the controller controls the preheater to work and controls the first electromagnetic valve to be opened; when the temperature signal detected by the second temperature sensor is greater than a set value T2, the controller controls the preheater to stop working and controls the first electromagnetic valve to be switched off; wherein T2 > T1;
and after the temperature signal detected by the second temperature sensor is greater than a set value T2 and the controller receives a diesel engine starting working signal sent by the diesel engine working detection unit, if the controller detects that the stop valve is in an open state, the second electromagnetic valve is controlled to be opened.
5. The method of controlling a preheat system for a multi-mode locomotive according to claim 2, comprising:
if the working mode judging unit judges that the running mode of the locomotive is the in-garage mode, after the starting time of the cab water heating system set by the arrival time setting unit:
when the temperature signal detected by the second temperature sensor is less than a set value T2, the controller controls the preheater to work;
when the temperature signal detected by the first temperature sensor is less than a set value T1, the controller controls the first electromagnetic valve to be opened;
when the stop valve is in an open state, controlling the second electromagnetic valve to open;
when the temperature signal detected by the second temperature sensor is greater than a set value T3, controlling the preheater to stop working and controlling the second electromagnetic valve to be switched off;
when the temperature signal detected by the first temperature sensor is greater than a set value T2, the controller controls the first electromagnetic valve to be turned off;
wherein T3 > T2 > T1.
6. The method of claim 5 wherein the pre-heater is activated only once.
7. The method of controlling a pre-heating system for a multi-mode locomotive according to claim 3 or 4, wherein T1 is 10 ℃ and T2 is 20 ℃.
8. The method of controlling a preheating system of a multi-operation-mode locomotive according to claim 5 or 6, wherein T1 is 10 ℃, T2 is 20 ℃, and T3 is 60 ℃.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010903635.8A CN112012864A (en) | 2020-09-01 | 2020-09-01 | Preheating system of multi-working-mode locomotive and control method thereof |
| PCT/CN2021/094766 WO2022048190A1 (en) | 2020-09-01 | 2021-05-20 | Multi-working mode locomotive preheating system and control method thereof |
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| CN202010903635.8A CN112012864A (en) | 2020-09-01 | 2020-09-01 | Preheating system of multi-working-mode locomotive and control method thereof |
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| CN112012864A true CN112012864A (en) | 2020-12-01 |
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| CN (1) | CN112012864A (en) |
| WO (1) | WO2022048190A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022048190A1 (en) * | 2020-09-01 | 2022-03-10 | 中车株洲电力机车有限公司 | Multi-working mode locomotive preheating system and control method thereof |
| CN114263556A (en) * | 2021-12-09 | 2022-04-01 | 中车株洲电力机车有限公司 | Internal-electric double-source motor train unit and heat preservation control method and system for internal combustion engine of internal-electric double-source motor train unit |
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| WO2022048190A1 (en) * | 2020-09-01 | 2022-03-10 | 中车株洲电力机车有限公司 | Multi-working mode locomotive preheating system and control method thereof |
| CN114263556A (en) * | 2021-12-09 | 2022-04-01 | 中车株洲电力机车有限公司 | Internal-electric double-source motor train unit and heat preservation control method and system for internal combustion engine of internal-electric double-source motor train unit |
| CN114263556B (en) * | 2021-12-09 | 2023-11-07 | 中车株洲电力机车有限公司 | Internal electric double-source motor train unit and internal combustion engine heat preservation control method and system thereof |
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| WO2022048190A1 (en) | 2022-03-10 |
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