CN103590943B - A kind of derv fuel supply system - Google Patents
A kind of derv fuel supply system Download PDFInfo
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- CN103590943B CN103590943B CN201310633603.0A CN201310633603A CN103590943B CN 103590943 B CN103590943 B CN 103590943B CN 201310633603 A CN201310633603 A CN 201310633603A CN 103590943 B CN103590943 B CN 103590943B
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Abstract
The present invention relates to a kind of derv fuel supply system, the oil outlet of the fuel tank of this system is connected to the filler opening of electric pump by oil pipe, electric pump, strainer, oil transfer pump, fine cleaner, high pressure oil pump are linked in sequence by oil pipe, the low pressure oil outlet of high pressure oil pump is connected with tank drainback mouth by oil pipe, and the high-pressure oil outlet of high pressure oil pump is connected with oil sprayer by high-pressure oil pipe; First switch valve is connected between the oil outlet of fuel tank and return opening by oil pipe, and second switch valve is connected between the filler opening of oil transfer pump and oil outlet by oil pipe, and the 3rd switch valve is connected between the filler opening of high pressure oil pump and low pressure oil outlet by oil pipe.The present invention breaches the restriction of diesel number to ambient temperature allowable, improves diesel oil lower than the mobility under ambient temperature allowable, ensures that label diesel oil is lower than the normal use under ambient temperature allowable, greatly reduces the user cost of user.
Description
Technical field
The invention belongs to the technical field of fuel oil for vehicles supply system design, particularly a kind of diesel-oil vehicle low temperature fuel oil supply system.
Background technique
Traditional derv fuel supply system parts are mainly fuel tank, strainer, oil transfer pump, fine cleaner, high pressure oil pump, high-pressure oil pipe, oil sprayer and low-voltage fuel pipeline composition; Oil transfer pump running produces negative pressure by diesel oil sucking-off from fuel tank, diesel oil enters into oil transfer pump entrance after low-voltage fuel pipeline and strainer, diesel compression is built pressure and is transported to high pressure oil pump through fine cleaner by oil transfer pump, diesel compression is be transported to oil sprayer after high pressure fuel by high pressure oil pump, and oil sprayer burns in fuel spraying to engine chamber.
Affect large shortcoming because derv fuel has mobility by its operating temperature, when temperature is lower than its freezing point temperature, diesel oil has solid and separates out, and affects flowability of diesel oil, and then affects the normal fuel injection of diesel vehicle; Diesel oil is divided into 6 trades mark according to the difference of Diesel oil solidifying point by GB19147-2009 for this reason, and define their condensation point and the requirement of cold filter plugging point accordingly, so the product of the different trade mark should be selected according to the actual climatic conditions of there and then when selecting Diesel oil product, in order to avoid affect the normal work of motor.
GB19147-2009 regulation derv fuel is divided into following 6 trades mark by condensation point:
1, No. 5 derv fuels: be applicable to the area use of the lowest temperature more than 8 DEG C that relative risk is 10%;
2, No. 0 derv fuel: be applicable to the area use of the lowest temperature more than 4 DEG C that relative risk is 10%;
3 ,-No. 10 derv fuels: be applicable to the area use of the lowest temperature more than-5 DEG C that relative risk is 10%;
4 ,-No. 20 derv fuels: be applicable to the area use of the lowest temperature more than-14 DEG C that relative risk is 10%;
5 ,-No. 35 derv fuels: be applicable to the area use of the lowest temperature more than-29 DEG C that relative risk is 10%;
6 ,-No. 50 derv fuels: be applicable to the area use of the lowest temperature more than-44 DEG C that relative risk is 10%;
As follows for the label diesel oil current techique scheme that area uses below its allowable temperature at present, electric heating, cooling liquid heating or engine exhaust mode of heating is adopted to heat diesel oil in fuel tank, electric heating or cooling liquid mode of heating is adopted to heat low-voltage fuel pipeline, ensure that diesel fuel temperature reaches its allowable temperature by above-mentioned mode of heating, and then realize the normal work of motor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of derv fuel supply system that can realize the normal work under lower than its ambient temperature allowable of label diesel oil, and this system does not need to carry out heating to diesel oil in fuel tank and fuel pipe just can realize engine work.
In order to solve the problems of the technologies described above, derv fuel supply system of the present invention comprises fuel tank, strainer, oil transfer pump, fine cleaner, high pressure oil pump and oil sprayer; Strainer, oil transfer pump, fine cleaner, high pressure oil pump are linked in sequence by oil pipe, and the low pressure oil outlet of high pressure oil pump is connected with tank drainback mouth by oil pipe, and the high-pressure oil outlet of high pressure oil pump is connected with oil sprayer by high-pressure oil pipe; Characterized by further comprising electric pump, the first switch valve, second switch valve and the 3rd switch valve; The oil outlet of described fuel tank is connected to the filler opening of electric pump by oil pipe, the oil outlet of electric pump is connected to the filler opening of strainer; First switch valve is connected between the oil outlet of fuel tank and return opening by oil pipe, and second switch valve is connected between the filler opening of oil transfer pump and oil outlet by oil pipe, and the 3rd switch valve is connected between the filler opening of high pressure oil pump and low pressure oil outlet by oil pipe.
Described first switch valve can be manually operated valve or solenoid valve.
Described second switch valve can be manually operated valve, solenoid valve or one-way valve.
Described 3rd switch valve can be manually operated valve, solenoid valve or inflow-rate of water turbine valve.
Before engine start, because ambient temperature is lower than the allowable temperature of fuel oil, the fuel oil in fuel tank can affect its mobility because solid is separated out; Now open the first switch valve, close second switch valve and the 3rd switch valve, by oil transfer pump and high pressure oil pump short circuit; Start electric pump, utilize electric pump by sucking-off in fuel from fuel tank, build-up pressure simultaneously, the low pressure oil way that fuel oil is formed through electric pump, strainer, fine cleaner directly gets back to fuel tank, and do not flow through oil transfer pump and high pressure oil pump, such fuel oil circulates in whole low pressure line, effectively can improve the mobility of pipeline intermediate fuel oil.During engine start, open electric pump, open the first switch valve, second switch valve, the 3rd switch valve; Fuel oil oil transfer pump running produce negative pressure under by sucking-off in fuel from fuel tank, build-up pressure simultaneously, after fuel oil flows through the low pressure line of electric pump, strainer, oil transfer pump, fine cleaner, high pressure oil pump formation, part fuel oil gets back to fuel tank from the low pressure oil outlet of high pressure oil pump, complete fuel oil circulating in whole low pressure line, another part fuel oil flows into oil sprayer through the high-pressure oil outlet of high pressure oil pump, is sprayed onto in firing chamber by oil sprayer.Fuel oil circulates in low pressure line, can improve temperature and the mobility of pipeline intermediate fuel oil.Because fuel consumption during engine start is little, and tank drainback mouth and oil outlet close together, the fuel oil major part entering low pressure line through fuel tank oil outlet gets back to the fuel oil of fuel tank, can meet mobility requirement during engine start.After normal working of engine, close electric pump, close the first switch valve, open second switch valve, the 3rd switch valve; Oil transfer pump running produces negative pressure by sucking-off in fuel from fuel tank, build-up pressure simultaneously, after fuel oil flows through the low pressure line of electric pump, strainer, fine cleaner, high pressure oil pump formation, a part of high-pressure oil outlet through high pressure oil pump, oil sprayer are sprayed onto in firing chamber, and another part is flowed out by the low pressure oil outlet of high pressure oil pump.The fuel oil that the low pressure oil outlet of high pressure oil pump flows out all directly enters low pressure line through the first switch valve; Part fuel oil in fuel tank enters low pressure oil way through oil outlet, with the fuel oil lacked because of engine combustion loss in supplementary low pressure oil way.Because the fuel oil temperature directly entered in low pressure line through the first switch valve is high, good fluidity, and fuel oil temperature in fuel tank is lower, mobility is poor, can ensure to enter the fuel oil satisfied temperature in low pressure line and mobility requirement after both mixing, thus realize the normal work of motor.The present invention breaches the restriction of diesel number to ambient temperature allowable, improves diesel oil lower than the mobility under ambient temperature allowable, ensures that label diesel oil is lower than the normal use under ambient temperature allowable.Such as: 0# diesel oil normally uses under-20 DEG C of ambient temperatures.Greatly reduce the user cost of user, thus diesel number classification can be decreased.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is derv fuel supply system schematic diagram of the present invention.
Embodiment
As shown in Figure 1, the fuel tank oil outlet of derv fuel supply system of the present invention is connected to the filler opening of electric pump by oil pipe, electric pump, strainer, oil transfer pump, fine cleaner, high pressure oil pump are linked in sequence by oil pipe, the low pressure oil outlet of high pressure oil pump is connected with tank drainback mouth by oil pipe, and the high-pressure oil outlet of high pressure oil pump is connected with oil sprayer by high-pressure oil pipe; First switch valve 4 is connected between the oil outlet of fuel tank and return opening by oil pipe 1, plays the effect of break-make oil pipe 1, and this valve can be manually operated valve or solenoid valve; Second switch valve 5 is connected between the filler opening of oil transfer pump and oil outlet by oil pipe 2, plays the effect of break-make oil pipe 2, and this valve can be manually operated valve, solenoid valve or one-way valve; 3rd switch valve 6 is connected between the filler opening of high pressure oil pump and low pressure oil outlet by oil pipe 3, plays the effect of break-make oil pipe 3, and this valve can be manually operated valve, solenoid valve or inflow-rate of water turbine valve.
Claims (4)
1. a derv fuel supply system, comprises fuel tank, strainer, oil transfer pump, fine cleaner, high pressure oil pump and oil sprayer; Strainer, oil transfer pump, fine cleaner, high pressure oil pump are linked in sequence by oil pipe, and the low pressure oil outlet of high pressure oil pump is connected with tank drainback mouth by oil pipe, and the high-pressure oil outlet of high pressure oil pump is connected with oil sprayer by high-pressure oil pipe; Characterized by further comprising electric pump, the first switch valve (4), second switch valve (5) and the 3rd switch valve (6); The oil outlet of described fuel tank is connected to the filler opening of electric pump by oil pipe, the oil outlet of electric pump is connected to the filler opening of strainer; First switch valve (4) is connected between the oil outlet of fuel tank and return opening by oil pipe, second switch valve (5) is connected between the filler opening of oil transfer pump and oil outlet by oil pipe, and the 3rd switch valve (6) is connected between the filler opening of high pressure oil pump and low pressure oil outlet by oil pipe.
2. derv fuel supply system according to claim 1, is characterized in that described first switch valve (4) is manually operated valve or solenoid valve.
3. derv fuel supply system according to claim 1, is characterized in that described second switch valve (5) is manually operated valve, solenoid valve or one-way valve.
4. derv fuel supply system according to claim 1, is characterized in that described 3rd switch valve (6) is manually operated valve, solenoid valve or inflow-rate of water turbine valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310633603.0A CN103590943B (en) | 2013-11-29 | 2013-11-29 | A kind of derv fuel supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310633603.0A CN103590943B (en) | 2013-11-29 | 2013-11-29 | A kind of derv fuel supply system |
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| CN103590943A CN103590943A (en) | 2014-02-19 |
| CN103590943B true CN103590943B (en) | 2015-10-14 |
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| CN201310633603.0A Active CN103590943B (en) | 2013-11-29 | 2013-11-29 | A kind of derv fuel supply system |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927440A (en) * | 2016-05-26 | 2016-09-07 | 潍柴动力股份有限公司 | Diesel engine and high pressure common rail fuel injection system thereof |
| CN106246429A (en) * | 2016-08-30 | 2016-12-21 | 潍柴动力股份有限公司 | Engine fuel oil system and include the electromotor of this engine fuel oil system |
| CN109026466B (en) * | 2018-08-01 | 2023-08-15 | 一汽解放汽车有限公司 | Positive pressure oil supply system for cold region of diesel vehicle and oil supply method thereof |
| CN109441680A (en) * | 2019-01-02 | 2019-03-08 | 广西玉柴机器股份有限公司 | The diesel fuel supply system of in-line large scale multi-cylinder diesel engine |
| CN110735746B (en) * | 2019-11-06 | 2021-03-09 | 一汽解放汽车有限公司 | Fuel prefilter and prefilter filtering control method |
| CN113482817B (en) * | 2021-08-17 | 2022-08-19 | 河南柴油机重工有限责任公司 | Pump-nozzle fuel injection supply system |
| CN114508451B (en) * | 2022-02-16 | 2023-09-26 | 一汽解放汽车有限公司 | Oil pump assembly and diesel engine assembly |
| CN114458489A (en) * | 2022-02-16 | 2022-05-10 | 一汽解放汽车有限公司 | Fuel supply system and fuel supply method thereof |
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| DE19832842C1 (en) * | 1998-07-21 | 2000-02-17 | Bosch Gmbh Robert | Fuel delivery system for supplying fuel to an internal combustion engine |
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| CN201794682U (en) * | 2010-01-27 | 2011-04-13 | 张昌盛 | Device using summer diesel fuel as fuel for diesel engine in cold winter |
| CN102116226A (en) * | 2010-12-28 | 2011-07-06 | 中国第一汽车集团公司 | Electric-cooling liquid mixed fuel heating system |
| CN201953531U (en) * | 2010-12-28 | 2011-08-31 | 中国第一汽车集团公司 | Electromagnetic type independent fuel supply system with main fuel tank and auxiliary fuel tank connected in parallel |
| CN203604088U (en) * | 2013-11-29 | 2014-05-21 | 中国第一汽车股份有限公司 | Automotive diesel oil supply system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002195122A (en) * | 2000-12-27 | 2002-07-10 | Mikuni Corp | Fuel supply system |
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2013
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19832842C1 (en) * | 1998-07-21 | 2000-02-17 | Bosch Gmbh Robert | Fuel delivery system for supplying fuel to an internal combustion engine |
| EP1156207A1 (en) * | 2000-05-19 | 2001-11-21 | Synerject Italy S.r.l. | Pump for feeding fuel to an internal combustion engine |
| KR100534731B1 (en) * | 2003-09-19 | 2005-12-07 | 기아자동차주식회사 | Fuel pump assembly for vehicle |
| CN201794682U (en) * | 2010-01-27 | 2011-04-13 | 张昌盛 | Device using summer diesel fuel as fuel for diesel engine in cold winter |
| CN102116226A (en) * | 2010-12-28 | 2011-07-06 | 中国第一汽车集团公司 | Electric-cooling liquid mixed fuel heating system |
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| CN103590943A (en) | 2014-02-19 |
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Effective date of registration: 20180815 Address after: 130011 2259 Dongfeng Street, Xinxin economic and Technological Development Zone, Changchun, Jilin Co-patentee after: FAW Jiefang Automotive Co., Ltd. Patentee after: China FAW Group Corporation Address before: 130011 2259 Dongfeng Street, Xinxin economic and Technological Development Zone, Changchun, Jilin Patentee before: China FAW Group Corporation |