CN201610815U - Cold-start flame-preheating oil feeding device - Google Patents
Cold-start flame-preheating oil feeding device Download PDFInfo
- Publication number
- CN201610815U CN201610815U CN2010201026970U CN201020102697U CN201610815U CN 201610815 U CN201610815 U CN 201610815U CN 2010201026970 U CN2010201026970 U CN 2010201026970U CN 201020102697 U CN201020102697 U CN 201020102697U CN 201610815 U CN201610815 U CN 201610815U
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- oil
- flame
- cold
- valve
- preheating
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- Lubrication Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a cold-start flame-preheating oil feeding device, in particular to the improvement of an oil return component of a VE dispensing pump. The cold-start flame-preheating oil feeding device comprises an oil pipe joint, a first oil return pipe and a second oil return pipe, and a middle hole of the oil pipe joint is externally connected with the VE dispensing pump and provided with an electromagnetic valve; and one end of the first oil return pipe is externally connected with an oil tank, one end of the second oil return pipe is communicated with the oil pipe joint, and the other end thereof is externally connected with an oil injector assembly. The cold-start flame-preheating oil feeding device also comprises a hydraulic oil return valve and an oil delivery pipe, one end of the hydraulic oil return valve is communicated with the oil pipe joint, the other end thereof is communicated with the first oil return pipe, one end of the oil delivery pipe is communicated with the oil pipe joint, the other end thereof is externally connected with a flame-preheating plug, and one end of the oil delivery pipe is provided with a valve. By utilizing an electric control system of the VE dispensing pump, the cold-start flame-preheating oil feeding device provides constant-pressure quantitative fuel oil for the flame-preheating plug at the set time, thereby leading the low-temperature cold start of a diesel engine to be more reliable, increasing the emission quality of the diesel engine under the working condition of cold start and meeting the requirement of the national automobile emission III standard.
Description
Technical field
The utility model relates to a kind of cold start-up flame preheating oil supplying device, and especially a kind of improvement of VE proportioning pump oil return parts belongs to vehicle auxiliary equipment technical field.
Background technique
At present, diesel engine need carry out preheating to its cylinder by Flame preheating plug and could normally start under cryogenic conditions, and the fuel feeding poor controllability of Flame preheating plug, cause diesel engine low-temperature cool starting poor reliability, and then make oil inflame insufficient, cause diesel engine cold start-up operating mode discharge quality lower, can not satisfy the requirement of national motor vehicle emission III standard.
The model utility content
The purpose of this utility model is: the problem at above-mentioned prior art exists on the basis of existing VE proportioning pump return tube parts, proposes a kind of cold start-up flame preheating oil supplying device that improves Flame preheating plug fuel feeding controllability.
In order to reach above purpose, cold start-up flame preheating oil supplying device of the present utility model comprises an oil connection, first return tube and second return tube, the external VE proportioning pump of described oil connection mesopore, wherein be provided with solenoid valve, the outer connected tank of one end of described first return tube, one end of described second return tube is communicated with described oil connection, the external injector assembly of the other end, its improvements are, also comprise hydraulic oil-returning valve and transport pipe, one end of described hydraulic oil-returning valve is communicated with described oil connection, and the other end is communicated with first return tube, and an end of described transport pipe is communicated with described oil connection, the external Flame preheating plug of the other end, an end of described transport pipe is provided with valve.
The utility model further improves: described hydraulic oil-returning valve is for only to allow liquid to be flowed to the one-way valve of fuel tank by described oil connection.
The utility model further improves: described valve is a solenoid valve.
After adopting structure of the present utility model, the automatical control system that utilizes the VE proportioning pump provides level pressure, quantitative fuel oil in moment of regulation to Flame preheating plug, improved the controllability of heater plug fuel feeding, make the diesel engine low-temperature cool starting more reliable, and make oil inflame more abundant, improve diesel engine cold start-up operating mode discharge quality, satisfy the requirement of national motor vehicle emission III standard; Satisfy the oil return demand in the diesel engine high-pressure fuel pump entire work process simultaneously.
The utility model can with the supporting VE proportioning pump of light-duty vehicle on use, cost is low, and is effective, filled up domestic blank.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model embodiment's a structural representation.Each part and label corresponding relation are among the figure: oil connection 1, hydraulic oil-returning valve 2, the first return tubes 3, transport pipe 4, the second return tubes 5.
Fig. 2 is the structural representation of hydraulic oil-returning valve among the utility model embodiment.
Embodiment
Embodiment
The cold start-up flame preheating oil supplying device basic structure of present embodiment as shown in Figure 1, comprise oil connection 1, the hydraulic oil-returning valve 2 that is connected with oil connection 1, first return tube 3 that is connected with the hydraulic oil-returning valve, the transport pipe 4 that is connected with oil connection 1, and second return tube 5 that is connected with oil connection 1.The oil connection mesopore is provided with the oil return solenoid valve (not shown) that is connected with VE proportioning pump oil outlet.Oil connection 1 is provided with the solenoid valve (not shown) with the joint of transport pipe 4.Hydraulic oil-returning valve 2 is for only to allow liquid to be flowed to the one-way valve of fuel tank (not shown) by oil connection 1.
When diesel engine was in the low-temperature cool starting operating mode, fuel oil flowed into oil connection 1 from the VE proportioning pump through oil return solenoid valve, and flows to hydraulic oil-returning valve 2, transport pipe 4 and second return tube 5 respectively.At this moment, hydraulic oil-returning valve 2 because of the pressure lower in closed condition, do not have fuel oil to flow to fuel tank by first return tube 3; The other end of second return tube 5 is connected with injector assembly oil return parts (not shown), can only flow out and can not reverse flow from injector assembly because injector assembly oil return Component Design is a fuel oil, so do not have fuel flow in second return tube 5.Meanwhile, flow to the fuel oil of transport pipe 4 because the unlatching of solenoid valve (not shown) flows to the Flame preheating plug of having switched on, beginning flame preheating program, and finish the diesel engine low-temperature cool starting.Starting rear electromagnetic valve wouldn't close, and the VE proportioning pump continues to provide fuel oil by this device to Flame preheating plug, finishes closed electromagnetic valve, Flame preheating plug oil-break up to the flame preheating program.
When diesel engine moved, along with the rising of diesel engine speed, pump chamber pressure increased, and when pressure surpassed certain value, the hydraulic oil-returning valve was opened, and oil return state when whole device is in operation makes the fuel oil of backflow flow into fuel tank.
The cold start-up flame preheating oil supplying device of present embodiment can receive from the oil return of diesel injector assembly and VE proportioning pump and with its oil return and return fuel tank, again can in conjunction with the automatical control system of VE proportioning pump moment of regulation with level pressure, quantitative fuel delivery diesel engine Flame preheating plug assembly, guarantee the fuel delivery demand of low-temperature cool starting flame preheating, make low-temperature cool starting more reliable, and the discharging of low-temperature cool starting operating mode is improved, satisfy the requirement of national motor vehicle emission III standard.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1. cold start-up flame preheating oil supplying device, comprise an oil connection, first return tube and second return tube, the external VE proportioning pump of described oil connection mesopore, wherein be provided with solenoid valve, the outer connected tank of one end of described first return tube, one end of described second return tube is communicated with described oil connection, the external injector assembly of the other end is characterized in that: also comprise hydraulic oil-returning valve and transport pipe, an end of described hydraulic oil-returning valve is communicated with described oil connection, the other end is communicated with first return tube, one end of described transport pipe is communicated with described oil connection, the external Flame preheating plug of the other end, and an end of described transport pipe is provided with valve.
2. cold start-up flame preheating oil supplying device according to claim 1, it is characterized in that: described hydraulic oil-returning valve is for only to allow liquid to be flowed to the one-way valve of fuel tank by described oil connection.
3. cold start-up flame preheating oil supplying device according to claim 2, it is characterized in that: described valve is a solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201026970U CN201610815U (en) | 2010-01-28 | 2010-01-28 | Cold-start flame-preheating oil feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201026970U CN201610815U (en) | 2010-01-28 | 2010-01-28 | Cold-start flame-preheating oil feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610815U true CN201610815U (en) | 2010-10-20 |
Family
ID=42961448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201026970U Expired - Fee Related CN201610815U (en) | 2010-01-28 | 2010-01-28 | Cold-start flame-preheating oil feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244328A (en) * | 2012-06-20 | 2013-08-14 | 南京威孚金宁有限公司 | Pressure-regulating timing advancing device |
| CN105065170A (en) * | 2015-07-24 | 2015-11-18 | 安徽天利动力股份有限公司 | Inlet air heating device of diesel engine |
-
2010
- 2010-01-28 CN CN2010201026970U patent/CN201610815U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244328A (en) * | 2012-06-20 | 2013-08-14 | 南京威孚金宁有限公司 | Pressure-regulating timing advancing device |
| CN103244328B (en) * | 2012-06-20 | 2016-06-08 | 南京威孚金宁有限公司 | Pressure regulation timing advancer |
| CN105065170A (en) * | 2015-07-24 | 2015-11-18 | 安徽天利动力股份有限公司 | Inlet air heating device of diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20101020 Termination date: 20170128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |