CN103967586A - Method for reducing air inlet temperature of internal combustion engine - Google Patents
Method for reducing air inlet temperature of internal combustion engine Download PDFInfo
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- CN103967586A CN103967586A CN201410209826.9A CN201410209826A CN103967586A CN 103967586 A CN103967586 A CN 103967586A CN 201410209826 A CN201410209826 A CN 201410209826A CN 103967586 A CN103967586 A CN 103967586A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention relates to a method for reducing the air inlet temperature of an internal combustion engine. The method includes the steps that high-pressure tail gas of the internal combustion engine and compressed air expand to be used as a power source to compress air, then the compressed air is cooled, by the utilization of the characteristic that the high-pressure gas expands and works to reduce the temperature, the cooled compressed air expands and works so that a cold source can be acquired, and then the air inlet temperature of the internal combustion engine is reduced. Devices adopted for the method include a turbocharger, a booster expansion turbine, an air cooler and an air-to-air heat exchanger. All the devices are connected together through air pipelines. The high-pressure tail gas of the internal combustion engine is used as the power source, the compressed air which is cooled through a conventional method and is about to enter the internal combustion engine is secondarily cooled, the temperature of the compressed air is lower, combustion of the internal combustion engine is complete, efficiency is higher, the output power is higher, knocking of the internal combustion engine is eliminated, noise is lowered, and operating reliability is improved. The tail gas emission temperature is reduced, and air pollution is reduced.
Description
Technical field
The present invention relates to a kind of method for reducing air-intake of combustion engine temperature, belong to technical field of internal combustion engines.
Background technique
At present a lot of internal-combustion engines all use turbosupercharging, and the air after supercharging will be lowered the temperature and just can be entered internal-combustion engine.Use on land at present internal-combustion engine, cool-down method mainly contains two kinds, and the first is with intercooler, and the heat that pressurized air is produced is switched directly in natural air by intercooler; The second is to pass to cooling liquid with the heat that heat exchanger produces pressurized air, and coolant temperature enters radiator after raising.By radiator by exchange heat in natural air.
First method is simple in structure, but heat dissipation potential is limited, is generally used on small-power internal-combustion engine.
Second method is mainly used in heavy duty on land, but that its shortcoming is heat exchange efficiency is not high, and device structure is huge, especially, under hot environment, often cannot meet the requirement of internal-combustion engine to intake temperature.In the process of work, first high humidity pressurized air after turbosupercharging enter heat exchanger, heat exchanger one side is that cooling liquid opposite side is high temperature compressed air, high temperature compressed air transfers heat to cooling liquid, coolant temperature raises, with water pump, high temperature coolant is outputed to radiator, by radiator by exchange heat in natural air.
It is more than the main method that reduces in the market air-intake of combustion engine temperature.
Prior art is under hot environment, and heat exchange efficiency is low, is difficult to meet the requirement of internal-combustion engine to intake temperature, and especially, when output power of internal combustion engine is large, shortcoming is obvious, and the method for taking significantly reduces output power of internal combustion engine often.Consider Economy, use in a large number in the market high-power rock gas internal-combustion engine, rock gas internal-combustion engine requires harsher to intake temperature, by conventional cooling means, be difficult to meet the demands.
Summary of the invention
Main purpose of the present invention is to provide a kind of method for reducing air-intake of combustion engine temperature, utilize the high pressure exhaust gas of internal-combustion engine as power source, cooling to carry out secondary with the cooled pressurized air that will enter internal-combustion engine of conventional method, the pressurized air cooling by secondary enters internal-combustion engine again, the air temperature that can make like this to enter internal-combustion engine is lower, make combustion in IC engine more abundant, efficiency is higher, reduces atmospheric pollution simultaneously.
To achieve these goals, technological scheme of the present invention is as follows.
A kind of method for reducing air-intake of combustion engine temperature, the method is to utilize internal combustion engine high pressure tail gas as power source pressurized air, the mechanical work that the expansion of recycling pressurized air is done is as power source secondary compressed air, then cooling these pressurized air, allow again cooled pressurized air expand and do work and become low-temp low-pressure air, utilize this this low-temp low-pressure air as low-temperature receiver, reduce air-intake of combustion engine temperature.
In said method, the device adopting comprises turbosupercharger.Booster expansion turbine, air-cooler and absolutely empty heat exchanger, said apparatus adopts air conduit to connect together.
Said apparatus each parts effect used is as follows: the purposes of turbosupercharger is to utilize internal combustion engine high pressure tail gas to drive, by air compressing; The purposes of booster expansion turbine has two, the firstth, allow and expand and do mechanical work from the low temperature compression air of air-cooler output, its air pressure and temperature are all reduced, air after decrease temperature and pressure becomes the low-temperature receiver of absolutely empty heat exchanger, second is the air that the mechanical work secondary compression utilizing pressurized air to expand to do is compressed by turbosupercharger, makes its air pressure higher; The purposes of air-cooler is the air of the cooling secondary compression from the output of booster expansion turbine pressurized end; The purposes of absolutely empty heat exchanger is to utilize the low-temp low-pressure air of exporting from booster expansion turbine inflating end is done mechanical work as low-temperature receiver, gives the air cooling-down that enters internal-combustion engine.
During specific works, with internal combustion engine high pressure tail gas, drive turbosupercharger, by air first compression, by the air of first compression, entered again booster expansion turbine pressurized end and carry out secondary compression, and then entering air-cooler cooling, the pressurized air after cooling enters booster expansion turbine inflating end expansion acting.The gentle pressure drop of temperature is low, and the low-temp low-pressure air after expansion enters absolutely empty heat exchanger again, to reduce the temperature of the air that will enter internal-combustion engine in absolutely empty heat exchanger.The pressurized end that the mechanical work that pressurized air is done in the expansion of booster expansion turbine inflating end is pressurized turbo-expander absorbs, and the pressurized air for secondary compression from turbosupercharger output, makes its air pressure higher.
This beneficial effect of the invention is: foregoing invention utilizes the high pressure exhaust gas of internal-combustion engine as power source, cooling to carry out secondary with the cooled pressurized air that will enter internal-combustion engine of conventional method, make its temperature lower, make combustion in IC engine more abundant, efficiency is higher, output power is larger, eliminate engine knocking in I. C. engine, reduce noise, improve operational reliability, reduce exhaust emissions temperature, reduced atmospheric pollution.
Accompanying drawing explanation
Fig. 1 is 1 operative installations work schematic diagram of the embodiment of the present invention.
Fig. 2 is 2 operative installations work schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described.To better understand the present invention.
Embodiment 1
As shown in Figure 1, the arrow on air conduit limit represents the direction of Air Flow.In the device shown in Fig. 1, comprise turbosupercharger, booster expansion turbine, air-cooler, absolutely empty heat exchanger, these devices adopt air conduit to connect together.
During said apparatus work, with internal combustion engine high pressure tail gas, drive turbosupercharger, by air first compression, the pressurized end that is entered booster expansion turbine by the air of first compression carries out secondary compression, then enter air-cooler cooling, pressurized air after cooling enters the expansion of booster expansion turbine inflating end and does mechanical work, and the pressurized end that the mechanical work of doing is pressurized turbo-expander absorbs, the air being compressed by turbosupercharger for secondary compression.The low-temp low-pressure air expanding after acting at booster expansion turbine inflating end enters absolutely empty heat exchanger, and in absolutely empty heat exchanger the inside, a side is the air that will enter internal-combustion engine.Opposite side is low-temp low-pressure air.Enter the heat of air of internal-combustion engine by the low-temp low-pressure absorption of air of opposite side, temperature reduces, and then enters combustion in IC engine, after the heat absorption of low-temp low-pressure air, is directly discharged in natural air.
Embodiment 2
Higher in ambient temperature, in the lower situation of air-intake of combustion engine temperature requirement, referring to Fig. 2,
In the device shown in Fig. 2, comprise turbosupercharger, air-cooler A, booster expansion turbine, air-cooler B and absolutely empty heat exchanger, these devices adopt air conduit to connect together.
The method of this embodiment device reduction air-intake of combustion engine used temperature is, with internal combustion engine high pressure tail gas, drive turbosupercharger, by air first compression, by the air of first compression, entered air-cooler A, lower the temperature for the first time, pressurized air after lowering the temperature for the first time enters booster expansion turbine pressurized end again and carries out secondary compression, and then enter air-cooler B and lower the temperature for the second time, pressurized air after reducing temperature twice enters booster expansion turbine inflating end expansion acting, the gentle pressure drop of temperature is low, low-temp low-pressure air after expansion enters absolutely empty heat exchanger again, to reduce the temperature of the air that will enter internal-combustion engine in absolutely empty heat exchanger, the pressurized end that the mechanical work that pressurized air is done in the expansion of booster expansion turbine inflating end is pressurized turbo-expander absorbs, pressurized air for secondary compression from air-cooler A output, make its air pressure higher.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (6)
1. for reducing a method for air-intake of combustion engine temperature, it is characterized in that: the method utilizes internal combustion engine high pressure tail gas and pressurized air expansion to carry out pressurized air as power source, then cooled compressed air.Utilize pressurized gas to expand characteristic that acting temperature reduces, allows the acting of expanding of cooled pressurized air obtain low-temperature receiver, to reduce air-intake of combustion engine temperature; The method equipment therefor comprises turbosupercharger, booster expansion turbine, air-cooler, absolutely empty heat exchanger.Above-mentioned each device adopts air conduit to connect together.
According to described in claims 1 for reducing the method for air-intake of combustion engine temperature, it is characterized in that: utilize internal combustion engine high pressure tail gas as power source pressurized air, the mechanical work that the expansion of recycling pressurized air is done is as power source secondary compressed air, then cooling these pressurized air, the characteristic of utilizing pressurized gas expansion acting temperature to reduce, allowing cooled pressurized air expand does work, become low-temp low-pressure air, utilize these low-temp low-pressure air as low-temperature receiver, reduce air-intake of combustion engine temperature.
3. according to the method for reducing air-intake of combustion engine temperature described in claims 1, it is characterized in that: described turbosupercharger is to drive with internal combustion engine high pressure tail gas, by air compressing.
4. according to the method for reducing air-intake of combustion engine temperature described in claims 1, it is characterized in that: the effect of described booster expansion turbine has two, allow on the one hand pressurized air expand and do mechanical work, make the gentle pressure drop of air temperature low, low-temp low-pressure cooling-air is provided to absolutely empty heat exchanger, on the other hand, the mechanical work of utilizing pressurized air to expand and do, the air that first compression is compressed by turbosupercharger, makes compressed-air actuated air pressure higher.
5. according to the method for reducing air-intake of combustion engine temperature described in claims 1, it is characterized in that: the described compressed-air actuated temperature of exporting from booster expansion turbine pressurized end that reduces with air-cooler, dissipation of heat is gone out.
6. according to the method for reducing air-intake of combustion engine temperature described in claims 1, it is characterized in that: the low-temp low-pressure air of described booster expansion turbine inflating end output enters absolutely empty heat exchanger, absolutely empty heat exchanger the inside, one side is the air that will enter internal-combustion engine, and opposite side is low-temp low-pressure air; Enter the heat of air of internal-combustion engine by the low-temp low-pressure absorption of air of opposite side, temperature reduces, and then enters combustion in IC engine; After the heat absorption of low-temp low-pressure air, be directly discharged in air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410209826.9A CN103967586A (en) | 2014-05-19 | 2014-05-19 | Method for reducing air inlet temperature of internal combustion engine |
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| CN201410209826.9A CN103967586A (en) | 2014-05-19 | 2014-05-19 | Method for reducing air inlet temperature of internal combustion engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240111A (en) * | 2015-11-09 | 2016-01-13 | 王登峰 | Method and device for decreasing intake air temperature of internal combustion engine |
| CN106555718A (en) * | 2015-09-29 | 2017-04-05 | 日立汽车系统(苏州）有限公司 | Air filter and air filter cooling control method |
| CN114639841A (en) * | 2020-12-15 | 2022-06-17 | 北京亿华通科技股份有限公司 | Fuel cell system and vehicle that low temperature was admitted air |
| CN114976154A (en) * | 2022-02-22 | 2022-08-30 | 中国科学院工程热物理研究所 | Hybrid power system based on fuel cell and internal combustion engine and regulation method |
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| CN101353980A (en) * | 2008-05-23 | 2009-01-28 | 洪国伟 | Internal combustion engine |
| CN102398495A (en) * | 2010-09-08 | 2012-04-04 | 北京航空航天大学 | Vehicle-mounted air refrigeration cycle system and method suitable for large vehicles |
| CN202228175U (en) * | 2011-03-21 | 2012-05-23 | 靳北彪 | Low-temperature air inlet engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106555718A (en) * | 2015-09-29 | 2017-04-05 | 日立汽车系统(苏州）有限公司 | Air filter and air filter cooling control method |
| CN105240111A (en) * | 2015-11-09 | 2016-01-13 | 王登峰 | Method and device for decreasing intake air temperature of internal combustion engine |
| CN114639841A (en) * | 2020-12-15 | 2022-06-17 | 北京亿华通科技股份有限公司 | Fuel cell system and vehicle that low temperature was admitted air |
| CN114639841B (en) * | 2020-12-15 | 2024-04-05 | 北京亿华通科技股份有限公司 | Fuel cell system with low-temperature air inlet and vehicle |
| CN114976154A (en) * | 2022-02-22 | 2022-08-30 | 中国科学院工程热物理研究所 | Hybrid power system based on fuel cell and internal combustion engine and regulation method |
| CN114976154B (en) * | 2022-02-22 | 2024-05-10 | 中国科学院工程热物理研究所 | Hybrid power system based on fuel cell and internal combustion engine and regulation and control method |
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Application publication date: 20140806 |