CN203374397U - Railway air-conditioned power generator car fuel oil heating system suitable for arctic-alpine environment - Google Patents
Railway air-conditioned power generator car fuel oil heating system suitable for arctic-alpine environment Download PDFInfo
- Publication number
- CN203374397U CN203374397U CN201320382339.3U CN201320382339U CN203374397U CN 203374397 U CN203374397 U CN 203374397U CN 201320382339 U CN201320382339 U CN 201320382339U CN 203374397 U CN203374397 U CN 203374397U
- Authority
- CN
- China
- Prior art keywords
- fuel
- oil
- fuel oil
- heating system
- generator car
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a railway air-conditioned power generator car fuel oil heating system suitable for arctic-alpine environment. The railway air-conditioned power generator car fuel oil heating system comprises two diesel engine sets and two oil tanks, and further comprises at least two fuel oil heating devices and a controller. The fuel oil heating devices are communicated to the cooling water pipelines of the two diesel engine sets through a water inlet pipe and a water outlet pipe respectively, the fuel oil heating device are communicated with the two oil tanks through an oil inlet pipe and an oil outlet pipe respectively, control valves used for being connected for disconnected with pipelines are arranged on the water inlet pipe, the water outlet pipe, the oil inlet pipe and the oil outlet pipe respectively, the fuel oil heating devices and the diesel engine sets can be combined arbitrarily to work, and heat exchange devices used for the heat exchange of oil and cooling water and oil pumps are arranged in the fuel oil heating devices. The railway air-conditioned power generator car fuel oil heating system can continuously heat the fuel oil in a fuel tank in an air-conditioned power generator car, guarantees the continuous and stable work of a diesel generator, solves the problem that the fuel oil in the fuel oil tank cannot normally flow in extreme low-temperature environment of -60 DEG C in winter due to the fact that the temperature is too low, and fully saves energy.
Description
Technical field
The utility model relates to a kind of railway air conditioning generator car, particularly a kind of railway air conditioning generator car fuel heating system of applicable passenger vehicle psychro-environment.
Background technique
At present, the passenger vehicle used at extremely frigid zones for some, wherein air conditioning generator car is all to use diesel engine unit that power is provided, international combined transport passenger vehicle approach Siberia, passenger vehicle needs to move under in the winter time-60 ℃ of extreme low temperature environment, and the generator car diesel engine is selected, it is non-electronic injection diesel engine, so in the design process of international combined transport generator car diesel generating set and auxiliary system, while having under extreme low temperature environment in winter diesel generating set work, how to guarantee generator car can be normally, work problem economically.
Railway power generator car has the mode of heating by electric oil heater to be heated fuel oil at present, but the heat that the generator car fuel Heating of moving at extremely frigid zones needs is larger, the heating efficiency of existing electric heater is far from being enough, if this fuel heater breaks down, rear oil-fired system Yin Wendu is too low and can't work, poor reliability.
The model utility content
The utility model main purpose is to address the above problem and is not enough, provide a kind of can continual supply air conditioning generator car diesel engine fuel oil, guarantee that diesel generator continues, the railway air conditioning generator car fuel heating system of the applicable psychro-environment of stable operation.
For achieving the above object, the technical solution of the utility model is:
A kind of railway air conditioning generator car fuel heating system of applicable psychro-environment, comprise two diesel engine unit, two fuel tanks, also comprise at least two fuel heaters and controller, described fuel heater is communicated in the cooling water pipeline of two described diesel engine unit by intake pipe and outlet pipe respectively, described fuel heater is communicated with two described fuel tanks by oil inlet pipe and oil outlet tube respectively, at each intake pipe, outlet pipe, on oil inlet pipe and oil outlet tube, be provided with for being communicated with or disconnecting the control valve of pipeline, but combination in any work between described fuel heater and described diesel engine unit, there is the heat-exchange device and the oil pump that carry out heat exchange for oily and cooling water in described fuel heater.
Further, be provided with Electric heating appliance on each described fuel tank.
Further, the skin at each described fuel tank wraps up the one layer of heat preservation layer.
Further, each described fuel heater and/or described fuel tank are furnished with independently fuel temperature sensor and controller.
Further, each described fuel heater connects a water inlet manifold, described water inlet manifold is connected with the cooling water pipeline of two described diesel engine unit respectively by two branch roads, be provided with total inlet valve on described water inlet manifold, described total inlet valve water pump in parallel, described water pump connects a control valve for water pump.
Further, each described fuel heater connects a total oil inlet pipe and a total oil outlet tube, and described total oil inlet pipe is connected with each the oily branch road that is communicated with two described fuel tanks by a three-way control valve respectively with total oil outlet tube.
Content to sum up, the railway air conditioning generator car fuel heating system of a kind of applicable psychro-environment described in the utility model compared with prior art has following advantage:
(1) be applied on the international combined transport passenger vehicle need in the winter time-60 ℃ moved under the extreme low temperature environment.By 2 groups of fuel heaters are set, and Electric heating appliance and thermal insulation layer be set on fuel tank, make generator car in the winter time under 60 ℃ of extreme low temperature environment, utilize the high-temperature cooling water of diesel engine to be heated the fuel oil in fuel tank, guarantee that the temperature of diesel oil meets the job requirement of diesel engine.This fuel heating system has solved under 60 ℃ of extreme low temperature environment in winter too low and the problem that can't proper flow of fuel oil Yin Wendu in fuel tank, and has fully saved the energy.
Can realize any independent assortment work between fuel heater and diesel engine unit by the control valve in switching oil circuit, water route between (2) two cover fuel heaters and two diesel engine unit, two fuel tanks, fully guarantee functional reliability and the Economy of generator car, also be conducive to energy saving simultaneously.
(3) when a set of fuel heater fault wherein, can start the fuel tank Electric heating appliance, take 1 group of electrically heated emergent heating mode of fuel heater+fuel tank, make fuel oil still can normal supply to diesel engine, this fuel heating system has fully guaranteed functional reliability and the Economy of generator car.
The accompanying drawing explanation
Fig. 1 is the utility model system architecture schematic diagram.
As shown in Figure 1, a diesel engine unit 1, cooling water outlet pipe 11, intake pipe 12, branch road 12a, 12b, water inlet control valve 13,14, cooling water inlet pipe 15;
No. two diesel engine unit 2, cooling water outlet pipe 21, intake pipe 22, branch road 22a, 22b, water inlet control valve 23,24, cooling water inlet pipe 25;
Left side of car lower fuel tank 3, oil outlet tube 31, oily branch road 31a, 31b, three-way control valve 32,33, oil inlet pipe 34;
Right side of car lower fuel tank 4, oil outlet tube 41, oily branch road 41a, 41b, three-way control valve 42,43, oil inlet pipe 44;
Fuel heater 26, water inlet manifold 61, total inlet valve 62, water pump 63, control valve for water pump 64, total outlet pipe 65, outlet water control valve 66,67, total oil outlet tube 68;
Breathing pipe 7, breather valve 71,72;
Connecting tube 8, Electric heating appliance 9, thermal insulation layer 10.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 1, the railway air conditioning generator car fuel heating system of a kind of applicable psychro-environment described in the utility model, comprise that diesel engine unit 1, No. two diesel engine unit 2, left side of car lower fuel tank 3, right side of car lower fuel tank 4, fuel heater 1, fuel heater 26 and controller (not shown)s form.
Particularly, pick out an intake pipe 12 be communicated with fuel heater 1 and fuel heater 26 in the cooling water outlet pipe 11 of a diesel engine unit 1, intake pipe 12 is divided into two branch road 12a and 12b, branch road 12a is communicated with fuel heater 1, branch road 12b is communicated with fuel heater 26, a water inlet control valve 13 that pilot line cut-offs of serial connection on branch road 12a, a water inlet control valve 14 that pilot line cut-offs of serial connection on branch road 7b.
Pick out an intake pipe 22 be communicated with fuel heater 1 and fuel heater 26 in the cooling water outlet pipe 21 of No. two diesel engine unit 2, intake pipe 22 is divided into two branch road 22a and 22b, branch road 22a is communicated with fuel heater 1, branch road 22b is communicated with fuel heater 26, a water inlet control valve 23 that pilot line cut-offs of serial connection on branch road 22a, a water inlet control valve 24 that pilot line cut-offs of serial connection on branch road 22b.
The branch road 12a of a diesel engine unit 1 and the branch road 22a of No. two diesel engine unit 2 are aggregated into the water inlet manifold 51 of fuel heater 1, serial connection one total inlet valve 52 on water inlet manifold 51, a water pump 53 in parallel with total inlet valve 52, water pump 53 is connected in series a control valve for water pump 54 again.
The branch road 12b of a diesel engine unit 1 and the branch road 22b of No. two diesel engine unit 2 are aggregated into the water inlet manifold 61 of fuel heater 26, serial connection one total inlet valve 62 on water inlet manifold 61, a water pump 63 in parallel with total inlet valve 62, water pump 63 is connected in series a control valve for water pump 64 again.
During diesel engine unit work, the discharge pressure that its recycle pump produces makes the periodic duty in whole water route of hot cooling water, now do not need to open water pump 53 and 63, total inlet valve 52 and 62 is opened, and control valve for water pump 54 and 64 disconnects, and water route also adopts the mode of upper entering and lower leaving, be beneficial to water circulation, simultaneously, oil circuit adopts the mode of bottom in and top out, is conducive to oil and cooling water and carries out heat exchange.For defence, when outdoor temperature is too low, requirement when rate of heat exchange can not meet low temperature, restart water pump 53 and 63, and with the water heating circulation of running business into strong one, now control valve for water pump 54 and 64 is opened, and total inlet valve 52 and 62 disconnects.
Particularly, left side of car lower fuel tank 3 picks out an oil outlet tube 31, and oil outlet tube 31 is divided into two oily branch road 31a and 31b, with fuel heater 1 and fuel heater 26, is communicated with respectively.Right side of car lower fuel tank 4 picks out an oil outlet tube 41, and oil outlet tube 41 is divided into two oily branch road 41a and 41b, with fuel heater 1 and fuel heater 26, is communicated with respectively.
The oily branch road 31a of left side of car lower fuel tank 3 is communicated with total oil inlet pipe (not indicating in figure) of fuel heater 1 by three-way control valve 32 with the oily branch road 41a of right side of car lower fuel tank 4, and total oil inlet pipe is connected in the oil pump (not indicating in figure) be arranged in fuel heater 1.
The oily branch road 31b of left side of car lower fuel tank 3 is communicated with total oil inlet pipe (not indicating in figure) of fuel heater 26 by three-way control valve 42 with the oily branch road 41b of right side of car lower fuel tank 4, and total oil inlet pipe is connected in the oil pump (not indicating in figure) be arranged in fuel heater 26.
Total oil outlet tube 58 of fuel heater 1 separates two oily branch roads by three-way control valve 33, and two oily branch roads are connected with the oil inlet pipe 34 of left side of car lower fuel tank 3 and the oil inlet pipe 44 of right side of car lower fuel tank 4 respectively.
Total oil outlet tube 68 of fuel heater 26 separates two oily branch roads by three-way control valve 43, and two oily branch roads are connected with the oil inlet pipe 34 of left side of car lower fuel tank 3 and the oil inlet pipe 44 of right side of car lower fuel tank 4 respectively.
All with a breathing pipe 7, be communicated with at four oily branch roads, be provided with breather valve 71 and 72 on the pipeline be communicated with breathing pipe 7, the oil gas that breathing pipe 7 accumulates for getting rid of oil circuit.
Between left side of car lower fuel tank 3 and right side of car lower fuel tank 4, by connecting tube 8, be communicated with.Respectively be provided with again an Electric heating appliance 9 on left side of car lower fuel tank 3 and right side of car lower fuel tank 4, Electric heating appliance 9 is arranged in the interlayer of fuel tank bottom, Electric heating appliance 9 adopts electrical tracing, be mainly used in when ambient temperature is too low, or, when one of them fuel heater damages, Electric heating appliance 9 is assisted as the diesel heating in fuel tank.Native system wraps up one layer of heat preservation layer 10 again in the surrounding of fuel tank, to guarantee the temperature of diesel oil, reaches energy-conservation purpose.
Have the heat-exchange device that carries out heat exchange for oily and cooling water in fuel heater 1 and fuel heater 26, take cooling water as thermal source, the heat that utilizes cooling water is the diesel heating in left side of car lower fuel tank 3 and right side of car lower fuel tank 4.
In this system, for guaranteeing normal operation, the situation that prevents an accident occurs, and this system respectively is equipped with two, same model oil pump to fuel heater 1 and fuel heater 26, can work alternate with each other and maintenance replacement.
Native system is provided with a plurality of temperature transducers, and left side of car lower fuel tank 3 respectively arranges two with right side of car lower fuel tank 4, and its temperature is presented on the oil temperature instrument of controller.Also be provided with temperature transducer on total outlet pipe 55 and 65 of the cold water pipeline of fuel heater 1 and fuel heater 26, its temperature is presented on the water temperature instrument of controller.Native system can the environment lower in temperature under, as outdoor temperature ,-60 ℃ the time, left side of car lower fuel tank 3 and right side of car lower fuel tank 4 diesel fuel temperature are remained in 10 ℃～15 ℃ scopes.
Below describe the controlling method of this system in detail:
When outdoor environment temperature during lower than-50 ℃, start this system, open fuel heater 1 and fuel heater 26 simultaneously, left side of car lower fuel tank 3 and the fuel oil in right side of car lower fuel tank 4 are heated, can meet the job requirement of diesel engine unit with the temperature of guaranteeing diesel oil.
1, left side of car lower fuel tank 3 and the interior diesel fuel temperature of the temperature transducer detection case in right side of car lower fuel tank 4, the information of controller collecting temperature sensor, when the diesel fuel temperature in fuel tank is down to the first setting temperature (10 ℃), temperature transducer sends signal, after controller receives signal, open the oil pump in fuel heater 1 and fuel heater 26, heat-exchange device starts to carry out the heat exchange between diesel oil and cooling water.
Oil circuit: under the effect of oil pump, the diesel oil in left side of car lower fuel tank 3 is flowed out by oil outlet tube 31, respectively through two oily branch road 31a and 31b, and three-way control valve 32 and 42, enter fuel heater 1 and fuel heater 26.Diesel oil in right side of car lower fuel tank 4 is flowed out by oil outlet tube 41, respectively through two oily branch road 41a and 41b, and three-way control valve 32 and 42, enter fuel heater 1 and fuel heater 26.
Diesel oil carries out heat exchange with the cooling water of high temperature in fuel heater 1 and fuel heater 26, the diesel oil that temperature after heat exchange is higher flows out from total oil outlet tube 58 and 68 of fuel heater 1 and fuel heater 26 respectively, then is back to fuel heater 1 and fuel heater 26 by each oily branch road respectively.
Water route: the cooling water of a diesel engine unit 1 enters intake pipe 12 and intake pipe 22 from cooling water outlet pipe 11, enter respectively again the water inlet manifold 51 of fuel heater 1 by branch road 12a, 22a, enter the water inlet manifold 61 of fuel heater 26 by branch road 12b, 22 b, now, total inlet valve 52 and 62 is opened, control valve for water pump 54 and 64 disconnects, water pump 53 and 63 cuts out, and whole waterway circulating relies on the discharge pressure that in diesel engine unit, cooling water circulating pump produces to make the periodic duty in whole water route of hot cooling water.
After diesel engine unit starts, the diesel engine unit cooling water temperature can reach more than 80 ℃, but, because outdoor temperature is too low, after working long hours, diesel fuel temperature does not still rise or the water-exit temperature of fuel heater during lower than 20 ℃ of setting temperatures, requirement when rate of heat exchange can not meet low temperature, now, start water pump 53 and 63, control valve for water pump 54 and 64 is opened, total inlet valve 52 and 62 disconnects, to be forced hot water circuit.When diesel fuel temperature rises or water-exit temperature switches off the pump 53 and 63 after higher than 40 ℃.
Cooling water carries out heat exchange in fuel heater 1 and fuel heater 26, low-temperature cooling water after exchange flows out from total outlet pipe 55 and 65 respectively, flow back to the cooling water inlet pipe 15 of a diesel engine unit 1 and the cooling water inlet pipe 25 of No. two diesel engine unit 2 by each branch road respectively again, complete waterway circulating.
When 2, the temperature in left side of car lower fuel tank 3 and right side of car lower fuel tank 4 rises to the second setting temperature (15 ℃), temperature transducer sends signal, after controller receives signal, close the oil pump in fuel heater 1 and fuel heater 26, stop heat exchange work.
In outdoor temperature during at-40 ℃-5 ℃, a fuel heater just can provide enough heats, therefore, only needing to open one of them fuel heater gets final product, at this moment, correspondence is connected water route and the oil circuit that this fuel heater connects, and disconnects water route and the oil circuit of another fuel heater.Two fuel heater every days or periodic replacement are used, so that two fuel heater uniform wears.
Even in order to guarantee two diesel fuel temperature in fuel tank, can adjust according to left side of car lower fuel tank 3 and the temperature contrast of right side of car lower fuel tank 4 oil pipe of fuel-displaced and oil-feed in native system, generally can select the fuel tank higher from temperature fuel-displacedly, be back in the fuel tank that another temperature is lower through after fuel heater heating.Left side of car lower fuel tank 3 and the temperature that also is conducive to balanced two fuel tanks connecting tube 8 between right side of car lower fuel tank 4.
In order to prevent that automatic control system from breaking down, time impact is used, and native system also is provided with manual control system, and to guarantee that this device can work when automatic control system breaks down, oil pump and water pump all can hand-operated forcedly start.
When meeting temperature transducer fault, fuel tank 4 temperature oil pump still not starting automatically lower than 10 ℃, the oil pump control switch should be adjusted to manual position, the force start operation of oil pump, when the oil temperature in fuel tank 4 reaches 20 ℃, manually stop operation of oil pump.
When in fuel heater 1 and fuel heater 26 one breaks down, the Electric heating appliance 9 of starting fuel tank, take 1 group of electrically heated emergent heating mode of fuel heater+fuel tank, make fuel oil still can normal supply to diesel engine, this fuel heating system has fully guaranteed functional reliability and the Economy of generator car.
In addition, when ambient temperature is too low, also can open the Electric heating appliance 9 of corresponding fuel tank, assist as the diesel heating in fuel tank, make fuel oil can normal supply to diesel engine.
As mentioned above, given scheme content, can derive similar technological scheme by reference to the accompanying drawings.In every case be the content that does not break away from technical solutions of the utility model, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. the railway air conditioning generator car fuel heating system of an applicable psychro-environment, comprise two diesel engine unit, two fuel tanks, it is characterized in that: also comprise at least two fuel heaters and controller, described fuel heater is communicated in the cooling water pipeline of two described diesel engine unit by intake pipe and outlet pipe respectively, described fuel heater is communicated with two described fuel tanks by oil inlet pipe and oil outlet tube respectively, at each intake pipe, outlet pipe, on oil inlet pipe and oil outlet tube, be provided with for being communicated with or disconnecting the control valve of pipeline, there is the heat-exchange device and the oil pump that carry out heat exchange for oily and cooling water in described fuel heater.
2. the railway air conditioning generator car fuel heating system of applicable psychro-environment according to claim 1, is characterized in that: on each described fuel tank, be provided with Electric heating appliance.
3. the railway air conditioning generator car fuel heating system of applicable psychro-environment according to claim 1, is characterized in that: at the skin parcel one layer of heat preservation layer of each described fuel tank.
4. the railway air conditioning generator car fuel heating system of applicable psychro-environment according to claim 1, it is characterized in that: each described fuel heater and/or described fuel tank are furnished with independently fuel temperature sensor and controller.
5. the railway air conditioning generator car fuel heating system of applicable psychro-environment according to claim 1, it is characterized in that: each described fuel heater connects a water inlet manifold, described water inlet manifold is connected with the cooling water pipeline of two described diesel engine unit respectively by two branch roads, be provided with total inlet valve on described water inlet manifold, described total inlet valve water pump in parallel, described water pump connects a control valve for water pump.
6. the railway air conditioning generator car fuel heating system of applicable psychro-environment according to claim 1, it is characterized in that: each described fuel heater connects a total oil inlet pipe and a total oil outlet tube, and described total oil inlet pipe is connected with each the oily branch road that is communicated with two described fuel tanks by a three-way control valve respectively with total oil outlet tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320382339.3U CN203374397U (en) | 2013-06-29 | 2013-06-29 | Railway air-conditioned power generator car fuel oil heating system suitable for arctic-alpine environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320382339.3U CN203374397U (en) | 2013-06-29 | 2013-06-29 | Railway air-conditioned power generator car fuel oil heating system suitable for arctic-alpine environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374397U true CN203374397U (en) | 2014-01-01 |
Family
ID=49836929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320382339.3U Withdrawn - After Issue CN203374397U (en) | 2013-06-29 | 2013-06-29 | Railway air-conditioned power generator car fuel oil heating system suitable for arctic-alpine environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374397U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670822A (en) * | 2013-06-29 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Railway air conditioner dynamo van fuel oil heating system and control method suitable for high and cold environment |
-
2013
- 2013-06-29 CN CN201320382339.3U patent/CN203374397U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670822A (en) * | 2013-06-29 | 2014-03-26 | 南车青岛四方机车车辆股份有限公司 | Railway air conditioner dynamo van fuel oil heating system and control method suitable for high and cold environment |
| CN103670822B (en) * | 2013-06-29 | 2016-02-10 | 南车青岛四方机车车辆股份有限公司 | Be applicable to railway air conditioning generator car fuel heating system and the controlling method of psychro-environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103670822B (en) | Be applicable to railway air conditioning generator car fuel heating system and the controlling method of psychro-environment | |
| CN201246924Y (en) | Air source heat pump and middle and high temperature water source heat pump combining heating apparatus | |
| CN103660916A (en) | Heat control system for hybrid power or range-extending type electric automobile | |
| CN202685908U (en) | Heat radiation system for overall electric car | |
| CN102832424B (en) | Temperature control system for battery packs | |
| CN103334820B (en) | Thermal control system and method of automobile engine | |
| CN201242315Y (en) | United heating apparatus for solar air source heat pump and middle-/high-temperature water source heat pump | |
| CN107781089B (en) | Preheating apparatus, the system and method for diesel engine | |
| CN205185783U (en) | Warm -air device for automobile | |
| CN104329156A (en) | Engine-motor integral cooling device for hybrid electric vehicle and hybrid electric vehicle | |
| CN204956079U (en) | A cooling system with increase form electric automobile for electric automobile increases journey system | |
| CN203766487U (en) | Heat control system for hybrid power or range extending type electric automobile | |
| CN102758706A (en) | Engine oil tank heating device | |
| CN201914052U (en) | Auxiliary heating system for vehicle | |
| CN208803925U (en) | Railway dislocation generation equipment uses fuel tank assembly | |
| CN203374397U (en) | Railway air-conditioned power generator car fuel oil heating system suitable for arctic-alpine environment | |
| CN201694024U (en) | Engine low-temperature starting preheating and cab heating system | |
| CN207955252U (en) | A kind of new-energy automobile and its water cooling distance increasing unit waste heat recovery warm air system | |
| CN205309621U (en) | Hydraulic press and spot welder technology cooling water system for water cooled generator | |
| CN208704170U (en) | A kind of pressure reducer assisted heating device | |
| CN106401835A (en) | Heat preservation method and device for cooling water and engine oil of diesel engine in low-temperature environment | |
| CN201884180U (en) | Engine coolant heating device | |
| CN203046819U (en) | Parking heating system | |
| CN201670360U (en) | Aircraft deicing fluid heating and proportioning system using hot water or water vapor as heat source | |
| CN204041326U (en) | The active-mode intelligent pre-heating system of the supporting heat exchanger lower header of a kind of motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20160210 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |