CN103016124A - High-low temperature automatic distributing and cooling system for diesel engine - Google Patents
High-low temperature automatic distributing and cooling system for diesel engine Download PDFInfo
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- CN103016124A CN103016124A CN2012105389680A CN201210538968A CN103016124A CN 103016124 A CN103016124 A CN 103016124A CN 2012105389680 A CN2012105389680 A CN 2012105389680A CN 201210538968 A CN201210538968 A CN 201210538968A CN 103016124 A CN103016124 A CN 103016124A
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Abstract
The invention provides a high-low temperature automatic distributing and cooling system for a diesel engine. The system comprises a low-temperature cooling loop and a high-temperature cooling loop, wherein the low-temperature cooling loop and the high-temperature cooling loop are internally and respectively provided with an engine oil heat exchanger, and in an engine oil loop, the engine oil heat exchanger in the low-temperature cooling loop is connected with a flow control valve in series and then connected with the engine oil heat exchanger in the high-temperature cooling loop in parallel. The high-temperature heat energy and the low-temperature heat energy are mutually distributed as required, so that the temperature of high-temperature water and engine oil at an inlet of the diesel engine can be reduced, the phenomenon that due to the overhigh temperature of the engine oil, the viscosity of the engine oil is reduced, so the pressure protection of the engine oil appears, and the diesel engine stops can be avoided, and the discharge requirement of a locomotive can be further met.
Description
Technical field
The present invention relates to the high low temperature of a kind of diesel engine and automatically distribute cooling system, belong to Diesel Engine Technique Field.
Background technique
The cooling water system for diesel engine of internal combustion locomotive is divided into high-temperature circuit and low-temperature circuit, and two loops are separate, is respectively cylinder liner, cylinder head, machine oil and the intercooler cooling of diesel engine.In order to reach preferably cooling effect, intercooler and lubricating oil heat exchanger generally all are arranged in the low-temperature circuit.In recent years, in order to improve the emission level of locomotive, have gradually the lubricating oil heat exchanger dislocation in high-temperature circuit, to improve the cooling effect of intercooler in low-temperature circuit.Yet the problem of bringing but is when the operation environment temperature is higher, and the temperature difference of high-temperature circuit cooling water and machine oil is less, and cooling effect is not fine, can cause High-temperature cooling coolant-temperature gage and oil temperature all higher, finally may cause the situation of diesel engine stop.
Summary of the invention
Purpose of the present invention overcomes the deficiency of above-mentioned prior art exactly, provides the high low temperature of a kind of diesel engine automatically to distribute cooling system, realizes the suitable equilibrium of heat between the high and low temperature cooling circuit.
The object of the present invention is achieved like this: the high low temperature of a kind of diesel engine distributes cooling system automatically, comprise coolant cooling circuit and High-temperature cooling loop, it is characterized in that in coolant cooling circuit and High-temperature cooling loop, respectively arranging a lubricating oil heat exchanger, in the machine oil loop, in parallel with the lubricating oil heat exchanger in the High-temperature cooling loop after the lubricating oil heat exchanger in the coolant cooling circuit is connected with flow control valve.
Adopt the solution of the present invention; high low-temperature heat quantity is distributed according to need mutually; high-temperature water temperature and the oil temperature of diesel engine import have been reduced; preventing owing to oil temperature is too high descends the machine oil viscosity; thereby cause engine oil pressure protection to make the phenomenon of diesel engine stop, also satisfied the emission request of locomotive.
Description of drawings
Fig. 1 is the high and low temperature cooling circuit principle schematic of the embodiment of the invention.
Fig. 2 is the machine oil circuit theory schematic representation of the embodiment of the invention.
Number in the figure: 1-high temperature heat sink, 2-low-temperature radiator, 3 cooling fans, the 4-high-temperature water pump, 5 low temperature water pumps, 6-swelling water tank, 7-high-temperature circuit lubricating oil heat exchanger, 8-low-temperature circuit lubricating oil heat exchanger, 9-diesel engine, 10-oil sump, the 11-main lubricating oil pump, 12-oil flow rate control valve, 13-oil filter, 14-intercooler.
Embodiment
For the purpose, technological scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who obtains under the creative work prerequisite.
Referring to Fig. 1 and Fig. 2.The High-temperature cooling loop is made of high temperature heat sink 1 and cooling fan 3, lubricating oil heat exchanger 7, high-temperature water pump 4.Coolant cooling circuit is made of low-temperature radiator 2 and cooling fan 3, intercooler 14, lubricating oil heat exchanger 8, low temperature water pump 5.Swelling water tank 6 is shared by two loops.The machine oil loop is made of oil sump 10, main lubricating oil pump 11, lubricating oil heat exchanger 7 and 8, oil flow rate control valve 12, oil filter 13, diesel engine 9.It is in parallel with lubricating oil heat exchanger 7 after lubricating oil heat exchanger 8 is connected with flow control valve 12.
The water circulation in High-temperature cooling loop: after diesel engine 9 started, high-temperature water pump 4 was inputted the water inlet manifold of diesel engine 9 with cooling water, by cylinder liner water cavity, cylinder head.Cooling water is flowed out by outfall sewer after being heated and heating up, and flows to high temperature heat sink 1, is cooled off by cooling fan 3.The high temperature heat sink of flowing through 1 cooled cooling water flows to lubricating oil heat exchanger 7, and machine oil is cooled off, and cooling water flows back to high-temperature water pump 4, so constantly reciprocation cycle after continuing to heat up.
The water circulation of coolant cooling circuit: when diesel engine 9 starts running, low temperature water pump 5 is thereupon running also, it sucks cooling water from the water-adding pipe of low-temperature radiator 2, swelling water tank 6, then cooling water is transported to intercooler 14, intercooler 14 is implemented cooling by cooling water to pressurized air, therefrom absorbs the pressurized air heat.Cooling water after the intensification flows out from intercooler 14, thereby flow to low-temperature radiator 2 temperature of cooling water is lowered, and flows to lubricating oil heat exchanger 8, then flows back to low temperature water pump 5, thereby forms cool cycles repeatedly.
The oil circulation in machine oil loop: main lubricating oil pump 11 is released machine oil in oil sump 10, machine oil is transported to lubricating oil heat exchanger 7 and 8, two heat exchangers are relation in parallel, and wherein lubricating oil heat exchanger 7 is placed in the High-temperature cooling loop, and lubricating oil heat exchanger 8 is placed in the coolant cooling circuit.Lubricating oil heat exchanger is to satisfy higher system pressure and flow.Diesel coolant flows through lubricating oil heat exchanger can reduce the oil temperature that flows into diesel engine.Flow to the machine oil of diesel engine and lubricating oil heat exchanger, carry out heat exchange from the water that radiator flows back to.From lubricating oil heat exchanger out, machine oil is transported to oil filter 13, then enters diesel engine 9.
At the in-line of lubricating oil heat exchanger 8 a pneumatic oil flow rate control valve 12 has been installed, this valve passes through microcomputer automatic control by the solenoid valve of locomotive, when the inlet temperature of diesel engine high-temperature cooling water reaches 93 ℃, oil flow rate control valve 12 is opened, low temperature water by diesel engine is come cooling machine oil, so not only the temperature of machine oil has obtained reduction, the temperature of diesel engine high-temperature water also can reduce gradually, when the inlet temperature of diesel engine high-temperature cooling water is reduced to 89 ℃, oil flow rate control valve 12 is closed, and at this moment, machine oil is only cooled off by high-temperature water, guarantee the low temperature refrigeration coolant-temperature gage of diesel engine, thereby guaranteed the emission request of diesel engine.
It should be noted that at last: above embodiment only in order to technological scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technological scheme.
Claims (1)
1. the high low temperature of diesel engine distributes cooling system automatically, comprise coolant cooling circuit and High-temperature cooling loop, it is characterized in that in coolant cooling circuit and High-temperature cooling loop, respectively arranging a lubricating oil heat exchanger, in the machine oil loop, in parallel with the lubricating oil heat exchanger in the High-temperature cooling loop after the lubricating oil heat exchanger in the coolant cooling circuit is connected with flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105389680A CN103016124A (en) | 2012-12-13 | 2012-12-13 | High-low temperature automatic distributing and cooling system for diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105389680A CN103016124A (en) | 2012-12-13 | 2012-12-13 | High-low temperature automatic distributing and cooling system for diesel engine |
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| Publication Number | Publication Date |
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| CN103016124A true CN103016124A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105389680A Pending CN103016124A (en) | 2012-12-13 | 2012-12-13 | High-low temperature automatic distributing and cooling system for diesel engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321734A (en) * | 2013-07-01 | 2013-09-25 | 中国北车集团大连机车车辆有限公司 | Cooling water system of diesel locomotive |
| CN103511053A (en) * | 2013-10-28 | 2014-01-15 | 中国重汽集团济南动力有限公司 | Cooling system capable of reducing water temperature of loaded vehicle |
| CN107701293A (en) * | 2017-11-17 | 2018-02-16 | 中车戚墅堰机车有限公司 | Diesel locomotive auxiliary water charging system |
| CN109707552A (en) * | 2018-12-07 | 2019-05-03 | 中车大连机车车辆有限公司 | The preheating method of diesel engine of diesel locomotive cooling water |
| WO2019153499A1 (en) * | 2018-02-07 | 2019-08-15 | 广西玉柴机器股份有限公司 | Engine oil supply system for v-type multi-cylinder diesel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2772426A1 (en) * | 1997-12-11 | 1999-06-18 | France Etat | Cooling circuit for internal combustion engine |
| US20030116105A1 (en) * | 2001-12-15 | 2003-06-26 | Harald Pfeffinger | Cooling circuit of a liquid-cooled internal combustion engine |
| DE19854544B4 (en) * | 1998-11-26 | 2004-06-17 | Mtu Friedrichshafen Gmbh | Cooling system for a supercharged internal combustion engine |
| US20070137594A1 (en) * | 2003-12-23 | 2007-06-21 | Puegeot Citroen Automobiles Sa | Device for controlling the temperature of fluids circulating in a heat engine vehicle and method used by said device |
| DE102006048527A1 (en) * | 2006-10-13 | 2008-04-17 | Volkswagen Ag | Cooling circuit for an internal combustion engine |
| CN102713192A (en) * | 2009-11-06 | 2012-10-03 | Mtu腓特烈港有限责任公司 | Cooling system of an internal combustion engine |
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2012
- 2012-12-13 CN CN2012105389680A patent/CN103016124A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2772426A1 (en) * | 1997-12-11 | 1999-06-18 | France Etat | Cooling circuit for internal combustion engine |
| DE19854544B4 (en) * | 1998-11-26 | 2004-06-17 | Mtu Friedrichshafen Gmbh | Cooling system for a supercharged internal combustion engine |
| US20030116105A1 (en) * | 2001-12-15 | 2003-06-26 | Harald Pfeffinger | Cooling circuit of a liquid-cooled internal combustion engine |
| US20070137594A1 (en) * | 2003-12-23 | 2007-06-21 | Puegeot Citroen Automobiles Sa | Device for controlling the temperature of fluids circulating in a heat engine vehicle and method used by said device |
| DE102006048527A1 (en) * | 2006-10-13 | 2008-04-17 | Volkswagen Ag | Cooling circuit for an internal combustion engine |
| CN102713192A (en) * | 2009-11-06 | 2012-10-03 | Mtu腓特烈港有限责任公司 | Cooling system of an internal combustion engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321734A (en) * | 2013-07-01 | 2013-09-25 | 中国北车集团大连机车车辆有限公司 | Cooling water system of diesel locomotive |
| CN103511053A (en) * | 2013-10-28 | 2014-01-15 | 中国重汽集团济南动力有限公司 | Cooling system capable of reducing water temperature of loaded vehicle |
| CN107701293A (en) * | 2017-11-17 | 2018-02-16 | 中车戚墅堰机车有限公司 | Diesel locomotive auxiliary water charging system |
| WO2019153499A1 (en) * | 2018-02-07 | 2019-08-15 | 广西玉柴机器股份有限公司 | Engine oil supply system for v-type multi-cylinder diesel engine |
| CN109707552A (en) * | 2018-12-07 | 2019-05-03 | 中车大连机车车辆有限公司 | The preheating method of diesel engine of diesel locomotive cooling water |
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Application publication date: 20130403 |