CN204267146U - The cooling recirculation system of bus using natural gas - Google Patents
The cooling recirculation system of bus using natural gas Download PDFInfo
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- CN204267146U CN204267146U CN201420768322.6U CN201420768322U CN204267146U CN 204267146 U CN204267146 U CN 204267146U CN 201420768322 U CN201420768322 U CN 201420768322U CN 204267146 U CN204267146 U CN 204267146U
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- cooling
- temperature
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- air
- intercooler
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Abstract
The utility model discloses a kind of cooling recirculation system of bus using natural gas, it is characterized in that, comprising: air cooling system, it comprises intercooler, and intercooler is cooled by the first electronic fan; And cooling fluid cooling system, it comprises radiator, and radiator is cooled by the second electronic fan; Wherein intercooler is separated the both sides being arranged on vehicle with radiator.System solves the problem the problem that bus using natural gas intake temperature is high, coolant temperature is high and cabin temperature is too high, ensure that the reliability of natural gas engine, structure is simple, precise control, high efficient and reliable, with low cost, avoid bus to be short of power, Economy is deteriorated simultaneously.
Description
Technical field
The utility model relates to cooling system of vehicle field, particularly a kind of cooling recirculation system of bus using natural gas.
Background technique
Bus is the important tool of current urban highway traffic.In the power setting of bus, be progressively transitioned into diesel engine by early stage pure electric vehicle, petrol engine.At present, gaseous propellant engine, mixed power (diesel oil or gaseous propellant engine drive with motor and mix) are just flourish.Wherein, gaseous propellant engine comprises rock gas, LPG etc.Compared with conventional diesel, petrol engine, natural gas engine combustion heat value is high, and heat dissipating capacity is large, to intake temperature and coolant temperature more responsive.On the other hand, natural gas engine is generally the technology paths (diesel oil, petrol engine are equivalent burning) adopting lean combustion, and air inlet amount determines the emitted dose of rock gas, finally determines power and moment of torsion that motor sends.If intake temperature is too high, air density diminishes, then its air inflow reduce, cause power and moment of torsion less than normal.And bus using natural gas and diesel oil, gasoline bus are the same, mainly travel at urban road, urban road road conditions are complicated, traffic light are many, various vehicle and pedestrian more, Vehicle Speed on average only has 20-30Km/h (corresponding engine speed is also in reduced levels).
The system of diesel-oil vehicle directly used by the cooling system of existing most of bus using natural gas, there is following shortcoming in this system: 1, less than normal the causing of heat dissipating capacity enters the too high temperature of air that engine cylinder participates in burning, density declines, flow is less than normal, cause burning variation, underpower, the catastrophe failure that piston melts top even occurs.2, make COOLANT TEMPERATURE, oil temperature is too high, and cylinder sleeve scuffing of cylinder bore, bearing shell burns out.3, make cabin temperature too high, and the various sensors on motor are all electronic components, cabin temperature is too high will inevitably reduce its reliability, shorten its life-span.
On the other hand, the car load cooling recirculation system of current natural gas engine, when low speed, is difficult to the heat taking away burning generation, especially when ambient temperature is high (as summer).When heat distributes not in time, engine coolant temperature, intake temperature and cabin temperature will be caused too high.Now, in order to ensure that engine reliable is run, ECU can perform error protection strategy, limits, be reacted on car load to the power of motor and moment of torsion, then driving dynamics is not enough, and fuel economy is deteriorated.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present utility model, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Model utility content
The purpose of this utility model is the cooling recirculation system providing a kind of bus using natural gas, system solves the problem the problem that bus using natural gas intake temperature is high, coolant temperature is high and cabin temperature is too high, ensure that the reliability of natural gas engine, structure is simple, precise control, high efficient and reliable, with low cost, avoid bus to be short of power, Economy is deteriorated simultaneously.
For achieving the above object, the utility model provides a kind of cooling recirculation system of bus using natural gas, it is characterized in that, comprising: air cooling system, and it comprises intercooler, and intercooler is cooled by the first electronic fan; And cooling fluid cooling system, it comprises radiator, and radiator is cooled by the second electronic fan; Wherein intercooler is separated the both sides being arranged on vehicle with radiator.
Preferably, air cooling system also comprises: air-strainer, and it filters the air entering motor; Pressurized machine, its one end is connected with air-strainer, and the other end of pressurized machine is connected with intercooler, and pressurized machine increases pressure to the air after filtration; Mixer, its one end is connected with intercooler, and the other end of mixer is by the cylinder activation of suction tude and motor; First temperature transducer, it is used for detecting the temperature of the air entering pressurized machine; And second temperature transducer, it is used for detecting the temperature of the air entering suction tude; Wherein vehicle control device controls the first electronic fan work according to the temperature signal that the first temperature transducer and the second temperature transducer detect.
Preferably, radiator and body cooling system are connected, and access engine water pump between radiator and body cooling system, and engine water pump is used for improving the pressure of cooling fluid and flow; Cooling fluid cooling system also comprises: external thermostat, and its one end is connected by engine water outlet and body cooling system; AT machine oil cooler, the other end of its one end and external thermostat is connected, and the other end of AT machine oil cooler and radiator are connected; First cooling-water temperature sensor, it is used for the temperature of the cooling fluid detected in radiator; And second cooling-water temperature sensor, it is used for the temperature of the cooling fluid detected in AT machine oil cooler.
Compared with prior art, the utility model has following beneficial effect: by air cooling system and cooling fluid cooling system independently being arranged separately, cool respectively, accelerate heat to distribute, cooling is more thorough, can extend the life-span of motor, strengthens reliability, and convenient maintenance, processing technology is simple.Meanwhile, the electronic fan precise control of band temperature transducer, and also consumed energy is less, noise is lower, can reduce the fuel consumption of motor.Further, by arranging external thermostat, regulating its flow according to the temperature of cooling liquid, better cooling effect can be obtained.
Accompanying drawing explanation
Fig. 1 is the layout schematic diagram of air cooling system in the cooling recirculation system according to bus using natural gas of the present utility model;
Fig. 2 is the layout schematic diagram of cooling fluid cooling system in the cooling recirculation system according to bus using natural gas of the present utility model.
Main Reference Numerals illustrates:
11-air-strainer, 12-pressurized machine, 13-intercooler, 14-mixer, 15-cylinder, 21-radiator, 22-engine water pump.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
As shown in Figures 1 and 2, according to the cooling recirculation system of a kind of bus using natural gas of the utility model embodiment, comprise air cooling system (shown in Fig. 1) and cooling fluid cooling system (shown in Fig. 2), air cooling system comprises intercooler 13, intercooler 13 is cooled by the first electronic fan, cooling fluid cooling system comprises radiator 21, and radiator 21 is cooled by the second electronic fan.With the arrangement (intercooler and radiator are stacked together) of the cooling recirculation system of traditional diesel-oil vehicle unlike, the intercooler 12 of the present embodiment is separated with radiator 21 both sides being arranged on vehicle.
The utility model embodiment is described with a kind of preferred embodiment, particularly, air cooling system also comprises air-strainer 11, pressurized machine 12, mixer 14, first temperature transducer 161 and the second temperature transducer 162, wherein air-strainer 11 filters the air entering motor, for motor provides clean air, one end of pressurized machine 12 is connected with air-strainer 11, and its other end is connected with intercooler 13.Pressurized machine 12 to filter after air increase pressure flow, intercooler 13 is used for reducing the air temperature after supercharging, one end of mixer 14 is connected with intercooler 13, the other end of mixer 14 is connected by the cylinder 15 of suction tude 17 with motor, air and rock gas mix in mixer 14, first temperature transducer 161 is used for detecting the temperature of the air entering pressurized machine 12, second temperature transducer 162 is used for detecting the temperature of the air entering suction tude 17, the temperature signal that vehicle control device detects according to the first temperature transducer 161 and the second temperature transducer 162 controls the first electronic fan work (see Fig. 1).
In addition, for cooling fluid cooling system, radiator 21 and body cooling system 23 are connected, engine water pump 22 is accessed between radiator 21 and body cooling system 23, engine water pump 22 is used for improving the pressure of cooling fluid and flow, cooling fluid cooling system also comprises external thermostat 26, AT machine oil cooler 24 (machine oil cooler of automatic transmission), the first cooling-water temperature sensor 251 and the second cooling-water temperature sensor 252, wherein external thermostat 26 has different apertures according to different temperature, and it can control the water flow in major cycle water route.Particularly, one end of external thermostat 26 is connected by engine water outlet 27 and body cooling system 23, one end of AT machine oil cooler 24 and the other end of external thermostat 26 are connected, the other end and the radiator 21 of AT machine oil cooler 24 are connected, first cooling-water temperature sensor 251 is used for the temperature of the cooling fluid detected in radiator, and the second cooling-water temperature sensor 252 is used for the temperature of the cooling fluid detected in AT machine oil cooler.
Be below the specific works process of the cooling recirculation system of the bus using natural gas of the present embodiment:
1. the working method of air cooling system
In vehicle travel process, the fresh air through air-strainer 11 filter dust, impurity enters pressurized machine 12, and pressurized machine 12 improves air pressure according to vehicle load situation, and meanwhile, the temperature of air can rise to 140 DEG C.After two temperature transducers (the first temperature transducer and the second temperature transducer) detect corresponding signal, vehicle control device can according to the absolute value of two place's temperature and difference, send the rotating speed that instruction improves first electronic fan at intercooler 13 place, accelerate the air of suction streams through intercooler core, temperature is dropped to about 50 DEG C, then flow to mixer and rock gas mixing, finally enter cylinder combustion.
2. the working method of cooling fluid cooling recirculation system
From body, cylinder cap, cooling liquid (cooling fluid) after the places such as machine oil cooler absorb heat is collected at engine water outlet 27, flow through external thermostat 26 afterwards and (generally adopt waxtype thermostat, its principle is open from 75 DEG C according to the temperature of cooling liquid, 100% is reached to aperture when 95 DEG C, aperture more large discharge is larger), finally enter AT machine oil cooler 24, cool (because the oil temperature of automatic transmission case can be higher than the oil temperature of motor to the machine oil of automatic transmission case, therefore be put into final step cooling), after completing each step above-mentioned, cooling liquid enters radiator 21, by radiator 21 and extraneous heat-shift.In the process, first cooling-water temperature sensor 251 and the second cooling-water temperature sensor 252 detect the temperature of cooling liquid, and feed back to vehicle control device, vehicle control device determines the speed of the second electronic fan according to the temperature signal that the first cooling-water temperature sensor 251 and the second cooling-water temperature sensor 252 detect, and regulates radiator 21 and extraneous heat exchange.In addition, the heat exchange medium that radiator 21 inside uses is generally antirust antifreeze liquid, can prevent that pipe interior from getting rusty, fouling, avoids freezing in cold area simultaneously.
To sum up, the cooling recirculation system of the bus using natural gas that the present embodiment provides is by independently arranging air cooling system and cooling fluid cooling system separately, cool respectively, accelerate heat to distribute, cooling is more thorough, can extend the life-span of motor, strengthens reliability, and convenient maintenance, processing technology is simple.Meanwhile, the electronic fan precise control of band temperature transducer, and also consumed energy is less, noise is lower, can reduce the fuel consumption of motor.By arranging external thermostat, regulating its flow according to the temperature of cooling liquid, better cooling effect can be obtained.
The aforementioned description to concrete exemplary of the present utility model is to illustrate and the object of illustration.These descriptions not want the utility model to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present utility model and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present utility model and various different selection and change.Scope of the present utility model is intended to limited by claims and equivalents thereof.
Claims (3)
1. a cooling recirculation system for bus using natural gas, is characterized in that, comprising:
Air cooling system, it comprises intercooler, and described intercooler is cooled by the first electronic fan; And
Cooling fluid cooling system, it comprises radiator, and described radiator is cooled by the second electronic fan;
Wherein said intercooler is separated with described radiator the both sides being arranged on vehicle.
2. the cooling recirculation system of bus using natural gas according to claim 1, is characterized in that, described air cooling system also comprises:
Air-strainer, it filters the air entering motor;
Pressurized machine, its one end is connected with described air-strainer, and the other end of described pressurized machine is connected with described intercooler, and described pressurized machine increases pressure to the air after filtration;
Mixer, its one end is connected with described intercooler, and the other end of described mixer is by the cylinder activation of suction tude and motor;
First temperature transducer, it is used for detecting the temperature of the air entering described pressurized machine; And
Second temperature transducer, it is used for detecting the temperature of the air entering described suction tude;
The temperature signal that wherein vehicle control device detects according to described first temperature transducer and described second temperature transducer controls described first electronic fan work.
3. the cooling recirculation system of bus using natural gas according to claim 1, it is characterized in that, described radiator and body cooling system are connected, and access engine water pump between described radiator and described body cooling system, and described engine water pump is used for improving the pressure of cooling fluid and flow;
Described cooling fluid cooling system also comprises:
External thermostat, its one end is connected by engine water outlet and described body cooling system;
AT machine oil cooler, the other end of its one end and described external thermostat is connected, and the other end and the described radiator of described AT machine oil cooler are connected;
First cooling-water temperature sensor, it is used for the temperature of the cooling fluid detected in described radiator; And
Second cooling-water temperature sensor, it is used for the temperature of the cooling fluid detected in described AT machine oil cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768322.6U CN204267146U (en) | 2014-12-08 | 2014-12-08 | The cooling recirculation system of bus using natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768322.6U CN204267146U (en) | 2014-12-08 | 2014-12-08 | The cooling recirculation system of bus using natural gas |
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| Publication Number | Publication Date |
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| CN204267146U true CN204267146U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420768322.6U Expired - Fee Related CN204267146U (en) | 2014-12-08 | 2014-12-08 | The cooling recirculation system of bus using natural gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397274A (en) * | 2018-03-06 | 2018-08-14 | 北京长安汽车工程技术研究有限责任公司 | Automobile fan control method |
-
2014
- 2014-12-08 CN CN201420768322.6U patent/CN204267146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397274A (en) * | 2018-03-06 | 2018-08-14 | 北京长安汽车工程技术研究有限责任公司 | Automobile fan control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20181208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |