CN203604088U - Automotive diesel oil supply system - Google Patents
Automotive diesel oil supply system Download PDFInfo
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- CN203604088U CN203604088U CN201320779469.0U CN201320779469U CN203604088U CN 203604088 U CN203604088 U CN 203604088U CN 201320779469 U CN201320779469 U CN 201320779469U CN 203604088 U CN203604088 U CN 203604088U
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Abstract
The utility model relates to an automotive diesel oil supply system. An oil outlet of an oil tank of the system is connected to an oil inlet of an electric pump through an oil pipe, the electric pump, a coarse strainer, an oil delivery pump, a fine strainer and a high-pressure oil pump are sequentially connected through oil pipes, a low-pressure oil outlet of the high-pressure oil pump is connected with an oil return port of the oil tank through an oil pipe, and a high-pressure oil outlet of the high-pressure oil pump is connected with an oil sprayer through a high-pressure oil pipe. A first switch valve is connected between the oil outlet of the oil tank and the oil return port of the oil tank through an oil pipe, a second switch valve is connected between an oil inlet of the oil delivery pump and an oil outlet of the oil delivery pump through an oil pipe and a third switch valve is connected between an oil inlet of the high-pressure oil pump and the low-pressure oil outlet of the high-pressure oil pump. The automotive diesel oil supply system breaks through limitation on allowable environment temperature of diesel oil label numbers, improves the liquidity of diesel oil at the temperature lower than the allowable environment temperature, guarantees the effect that diesel oil with the label numbers can be used normally at the temperature lower than the allowable environment temperature, and greatly lowers the use cost of a user.
Description
Technical field
The utility model 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, oil transfer pump is built diesel oil compression to press and be transported to high pressure oil pump through fine cleaner, high pressure oil pump will be transported to oil sprayer after diesel oil boil down to high pressure fuel, and oil sprayer burns fuel spraying in engine chamber.
Be subject to its operating temperature to affect large shortcoming because derv fuel has mobility, when temperature is during 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; GB19147-2009 is divided into 6 trades mark according to the difference of Diesel oil solidifying point by Diesel oil for this reason, and their condensation point and the requirement of cold filter plugging point are stipulated accordingly, so should select according to the actual climatic conditions of there and then the product of the different trades mark in the time 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 relative risk and be 10% the lowest temperature area more than 8 ℃ and use;
2, No. 0 derv fuel: be applicable to relative risk and be 10% the lowest temperature area more than 4 ℃ and use;
3 ,-No. 10 derv fuels: be applicable to relative risk and be 10% the lowest temperature area more than-5 ℃ and use;
4 ,-No. 20 derv fuels: be applicable to relative risk and be 10% the lowest temperature area more than-14 ℃ and use;
5 ,-No. 35 derv fuels: be applicable to relative risk and be 10% the lowest temperature area more than-29 ℃ and use;
6 ,-No. 50 derv fuels: be applicable to relative risk and be 10% the lowest temperature area more than-44 ℃ and use;
As follows in its current techique scheme that below allowable temperature, area is used for label diesel oil at present, adopt electric heating, cooling liquid heating or engine exhaust mode of heating to heat diesel oil in fuel tank, adopt electric heating or cooling liquid mode of heating to heat low-voltage fuel pipeline, guarantee that by above-mentioned mode of heating diesel fuel temperature reaches its allowable temperature, and then realize the normal work of motor.
Summary of the invention
The technical problems to be solved in the utility model 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 diesel oil in fuel tank and fuel pipe to heat and just can realize engine work.
In order to solve the problems of the technologies described above, derv fuel supply system of the present utility model 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; The first switch valve is connected in by oil pipe between the oil outlet and return opening of fuel tank, and second switch valve is connected in by oil pipe between the filler opening and oil outlet of oil transfer pump, and the 3rd switch valve is connected between the filler opening and low pressure oil outlet of high pressure oil pump by oil pipe.
Described the 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 the 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 be separated out and affect its mobility because of solid; 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 forms through electric pump, strainer, fine cleaner is directly got back to fuel tank, and do not flow through oil transfer pump and high pressure oil pump, fuel oil circulates in whole low pressure line like this, can effectively improve the mobility of pipeline intermediate fuel oil.When engine start, open electric pump, open the first switch valve, second switch valve, the 3rd switch valve; Under the negative pressure that fuel oil produces in oil transfer pump running by sucking-off in fuel from fuel tank, build-up pressure simultaneously, fuel oil is flowed through after the low pressure line that electric pump, strainer, oil transfer pump, fine cleaner, high pressure oil pump form, part fuel oil is got 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.During due to engine start, fuel consumption is little, and tank drainback mouth and oil outlet close together, the fuel oil major part that enters low pressure line through fuel tank oil outlet is to get back to the fuel oil of fuel tank from low pressure line, the mobility requirement can meet engine start time.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, fuel oil is flowed through after the low pressure line that electric pump, strainer, fine cleaner, high pressure oil pump form, a part is sprayed onto in firing chamber through high pressure oil outlet, the oil sprayer of high pressure oil pump, 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, to supplement the fuel oil lacking because of engine combustion loss in low pressure oil way.High owing to directly entering fuel oil temperature in low pressure line through the first switch valve, good fluidity, and fuel oil temperature in fuel tank is lower, mobility is poor, both can guarantee to enter fuel oil satisfied temperature and the mobility requirement in low pressure line after mixing, thereby realize the normal work of motor.The utility model has been broken through the restriction of diesel number to ambient temperature allowable, has improved diesel oil in the mobility lower than under ambient temperature allowable, guarantees that label diesel oil is in the normal use lower than under ambient temperature allowable.For example: 0# diesel oil normally uses under-20 ℃ of ambient temperatures.Greatly reduce user's user cost, thereby can reduce diesel number classification.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is derv fuel supply system schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the fuel tank oil outlet of derv fuel supply system of the present utility model 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; The first switch valve 4 is connected between the oil outlet and return opening of fuel tank 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 and oil outlet of oil transfer pump 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; The 3rd switch valve 6 is connected between the filler opening and low pressure oil outlet of high pressure oil pump 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; The first switch valve (4) is connected in by oil pipe between the oil outlet and return opening of fuel tank, second switch valve (5) is connected in by oil pipe between the filler opening and oil outlet of oil transfer pump, and the 3rd switch valve (6) is connected between the filler opening and low pressure oil outlet of high pressure oil pump by oil pipe.
2. derv fuel supply system according to claim 1, is characterized in that described the 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 the 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 |
|---|---|---|---|
| CN201320779469.0U CN203604088U (en) | 2013-11-29 | 2013-11-29 | Automotive diesel oil supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320779469.0U CN203604088U (en) | 2013-11-29 | 2013-11-29 | Automotive diesel oil supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604088U true CN203604088U (en) | 2014-05-21 |
Family
ID=50716764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320779469.0U Withdrawn - After Issue CN203604088U (en) | 2013-11-29 | 2013-11-29 | Automotive diesel oil supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203604088U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590943A (en) * | 2013-11-29 | 2014-02-19 | 中国第一汽车股份有限公司 | Automotive diesel oil supplying system |
| CN105114229A (en) * | 2015-09-11 | 2015-12-02 | 中国北车集团大连机车研究所有限公司 | Low-temperature preheating system for fuel of diesel engine |
| CN110735746A (en) * | 2019-11-06 | 2020-01-31 | 一汽解放汽车有限公司 | fuel prefilter and prefilter filtering control method |
-
2013
- 2013-11-29 CN CN201320779469.0U patent/CN203604088U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590943A (en) * | 2013-11-29 | 2014-02-19 | 中国第一汽车股份有限公司 | Automotive diesel oil supplying system |
| CN103590943B (en) * | 2013-11-29 | 2015-10-14 | 中国第一汽车股份有限公司 | A kind of derv fuel supply system |
| CN105114229A (en) * | 2015-09-11 | 2015-12-02 | 中国北车集团大连机车研究所有限公司 | Low-temperature preheating system for fuel of diesel engine |
| CN110735746A (en) * | 2019-11-06 | 2020-01-31 | 一汽解放汽车有限公司 | fuel prefilter and prefilter filtering control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140521 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |