CN201083156Y - Single oil way oil engine heat test oil feeding returning system - Google Patents
Single oil way oil engine heat test oil feeding returning system Download PDFInfo
- Publication number
- CN201083156Y CN201083156Y CNU2007201878540U CN200720187854U CN201083156Y CN 201083156 Y CN201083156 Y CN 201083156Y CN U2007201878540 U CNU2007201878540 U CN U2007201878540U CN 200720187854 U CN200720187854 U CN 200720187854U CN 201083156 Y CN201083156 Y CN 201083156Y
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- oil
- return
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Abstract
The utility model relates to a thermal test oil supply and return system of a single-oil way oil engine, wherein a compressed air pipeline system and an oil supply pipeline system are connected with the gas/oil supply end of an engine fuel oil pipe assembly through a common gas/oil supply pipe; the gas/oil supply pipe is provided with a jet flow tee junction; the gas/oil supply port and the vacuum port of the jet flow tee junction are respectively connected with the compressed air pipeline system and the oil supply end of the fuel oil pipe assembly; moreover, an oil return port is connected with an oil return pipeline system. The oil supply and return system adopts double-pressure oil return mode and presses fuel oil back to the oil return pipeline system by means of the pressure of compressed air; moreover, the residual oil in an engine and the fuel oil pipe assembly is sucked out to an oil return cavity by means of the vacuum (i.e. negative pressure) formed inside the cavity through the jet flow tee junction. The utility model has a simple structure and convenient use; moreover, all residual oil can be returned to a total oil return pipeline, thereby eliminating hidden danger.
Description
Technical field
The utility model is about making a kind of method and the device that the excess oil of fuel engine after break-in (heat test) handled.Particularly, the utility model is to be used for single oil circuit fuel engine after finishing heat test remaining gasoline to be taked two a kind of method and devices that push back oil.
Background technique
Most of engine fuel pipe assemblies position is provided with the fuel oil input and output port, after motor is finished break-in, residual gasoline in motor and the input pipeline need be got rid of, usual way is directly to apply pressurized air by input end in the engine fuel pipe assembly, makes excess oil return total oil circuit (promptly blowing oil) from output terminal.
The shortcoming of the method is not to be suitable for the fuel engine that only is provided with an input port, it is single oil circuit motor, as Europe III motor, this class motor is after heat test, in-engine Residual oil cannot return main oil circuit, and behind the fuel oil quick release coupling that pulls out its input hydraulic fluid port, Residual oil can be imported oil port and the outflow of fuel oil quick release coupling from motor, high-concentration gasoline spreads on the running-in test stand, has constituted serious potential safety hazard.
Summary of the invention
The technical problems to be solved in the utility model is at having the shortcoming that oil return system and method can not realize the oil return of single oil circuit fuel engine now, and design a kind of single oilchannel fuel oil engines heat test oil return feeding system, confession, the shared system of oil return, and the unique two intersection oil return methods of pressing of employing, simple in structure, easy to use, excess oil can all be back to total return line, eliminates safe hidden trouble.
The technical solution of the utility model is as follows:
The utility model at first proposes a kind of single oilchannel fuel oil engines heat test oil return feeding system, and this system includes compressed air line system, oil feed line system and return line system.Wherein compressed air line system, oil feed line system are connected with the air feed of engine fuel pipe assembly/oil end by shared air feed/oil pipe, one jet threeway is set on this air feed/oil pipe, air feed/the hydraulic fluid port of jet threeway is connected with the compressed air line system, the vacuum port of jet threeway is connected with engine fuel pipe assembly fuel feeding end, and the return opening of jet threeway is connected with the return line system.
Wherein, the axis of the vacuum port of jet threeway and confession/oil gas mouth is and is in tilted layout, air supply opening and relief opening are at same axis, its inner chamber is respectively negative pressure of vacuum chamber, air feed/oil pocket and oil back chamber, air feed/oily inner chamber entry end has the through hole of a diameter of phi 2, the through hole end is 60 ° of chamferings, is horn-like from inside to outside.
Described return line system comprises scavenger valve, ball valve and the oil sump on the return tube that is connected to jet threeway return opening in turn, and scavenger valve adopts air operated reversing valve.Described compressed air line system by pressurized air, blow fuel tap, one-way valve and ball valve and connect and compose by pipeline successively, the oil feed line system is connected and composed by pipeline successively by delivery valve, one-way valve and ball valve, and two systems are connected to the air feed/hydraulic fluid port of jet threeway by shared ball valve; Blow fuel tap, delivery valve and all adopt air operated reversing valve.
The employing of this oil return feeding system is two to push back oily mode, utilizes pressurized air to be power source, and its pressure (malleation) pushes back the return line system with the fuel oil in oil pipe.After simultaneously pressurized air reaches certain force value, horn mouth place at jet threeway air feed end inner chamber produces jet, because gas toughness, jet siphons away the gas in the negative pressure of vacuum chamber, in the chamber, form vacuum (being negative pressure), negative pressure then with the Residual oil sucking-off in this motor and the fuel rail assembly to the oil back chamber chamber.Detailed process for oil return is as follows:
(1) fuel feeding: the delivery valve of fuel oil by the oil feed line system is through tapping into the air feed/hydraulic fluid port of jet threeway with compressed air line system shared air feed/oil pipe, this moment, the scavenger valve of jet threeway cut out, fuel oil enters the shared hydraulic fluid port of turnover of engine fuel pipe assembly by the vacuum port of jet threeway, gives engine oil;
(2) oil return: after heat test is finished, close the oil feed line system, open the return line system, then the compressed air line system is carried out the control at intermittence of one open-one close; At first open the compressed air line system, pressurized air is by blowing fuel tap through entering the air feed/hydraulic fluid port of jet threeway with oil feed line system shared air feed/oil pipe, fuel oil return opening by the jet threeway under the effect of malleation in the oil pipe pushes back the return line system, this moment, jet siphoned away the gas in the jet threeway negative pressure of vacuum chamber, produced negative pressure; The closes compression air pipe system with the Residual oil sucking-off in the engine fuel pipe assembly, is back to return line system through return opening by the negative pressure in the jet threeway then; By on-off repeatedly, form repeatedly pressures-suctions (being generally 5～8 times), produce the positive and negative pressure of intersection repeatedly, the oil return of the single oil circuit fuel engine of realization under two pressure effects, the oily full scale clearance in the engine fuel pipe assembly is clean.
Native system compared with prior art has following beneficial effect:
1, the Residual oil in the filler opening place of single oil circuit fuel engine energy sucking-off motor and the fuel oil assembly can all return main return tube with the residual fuel oil in the oil supply system, has effectively eliminated site safety hidden danger, has saved gasoline.
2, for an oil return shared system, system element is few, and the jet three-port structure is simple, manufacturing and operating cost are low, easy to operate.
Description of drawings
The structural drawing of Fig. 1 single oilchannel fuel oil engines heat test oil return feeding system
Fig. 2 jet three-port structure figure
Embodiment
Referring to Fig. 1, this oil return feeding system includes compressed air line system, oil feed line system and return line system.The compressed air line system by compressed air gas source 1, blow fuel tap 2, one-way valve 3 and ball valve 6 and connect and compose by pipeline successively; The oil feed line system is connected and composed by pipeline successively by delivery valve 4, one-way valve 5 and ball valve 6; Two systems are connected with the air feed/oil end of engine fuel pipe assembly 10 with air feed/oil pipe by shared ball valve 6, this air feed/oil pipe is provided with a jet threeway 7, air feed/the hydraulic fluid port 71 of jet threeway 7 is connected with the compressed air line system by quick release coupling and flexible pipe, the vacuum port 72 of jet threeway is connected with fuel rail assembly fuel feeding end by quick release coupling and flexible pipe, and the return opening 73 of jet threeway is connected with the return line system by quick release coupling and flexible pipe.The return line system comprises scavenger valve 8, the ball valve 9 on the return tube that is connected to jet threeway return opening 73 in turn, at last to the fuel oil pond.Above-mentioned blow fuel tap 2, delivery valve 4 and scavenger valve 8 all adopt air operated reversing valve, respectively by 11 controls of three electromagnetic pneumatic reversal valves.
Structure such as Fig. 2 of jet threeway 7 show that there are three mouths that are threaded the outside of jet threeway, and are respectively air feed/hydraulic fluid port 71, vacuum port 72 and return opening 73; Corresponding three inner chambers that communicate are also arranged in the inside of jet threeway, be respectively negative pressure of vacuum chamber 712, air feed/oil pocket 711 and oil back chamber 713, the entry end of air feed/oil pocket 711 has the through hole of a diameter of phi 2, and the through hole end is 60 ° of chamferings, is horn-like from inside to outside.The internal diameter in negative pressure of vacuum chamber 712 is Φ 6, and the internal diameter of oil back chamber 713 is Φ 5.
As follows for the oil return process:
1, fuel feeding: close oil return system pipeline and compressed air line system, open the oil feed line system, delivery valve that fuel oil passes through is through tapping into the air feed/hydraulic fluid port of jet threeway with compressed air line system shared air feed/oil pipe, fuel oil is delivered to the oil inlet and outlet of engine fuel pipe assembly by the vacuum port of jet threeway, gives engine oil.
2, oil return: after heat test is finished, close the oil feed line system, open the return line system, then the compressed air line system is carried out the control at intermittence of one open-one close.
At first be to blow oil (pressing oil) process, open the compressed air line system, pressurized air is pressed the return opening by the jet threeway under the effect of malleation of the fuel oil in the oil pipe by blowing fuel tap through entering the air feed/hydraulic fluid port of jet threeway with oil feed line system shared air feed/oil pipe
ReturnFlow to the return line system, this moment, jet siphoned away the gas in the jet threeway negative pressure of vacuum chamber, produced negative pressure;
Be oil-absorbing process then, the closes compression air pipe system, the negative pressure by jet threeway negative pressure of vacuum chamber is got back to the return line system with the Residual oil sucking-off in the engine fuel pipe assembly by return opening;
By on-off repeatedly, form repeatedly pressure-suction, the oily full scale clearance in the engine fuel pipe assembly is clean.
Two operating procedure, activity time and gap number of times (frequency of okperation) that push back oily process are by the PLC program control, and frequency of okperation is set according to technological requirement.
Oil return system is in operation and must keeps unimpeded, the oil return flexible pipe is non-warping, the oil return metal tube is not pressed partially, jet threeway, return tube, scavenger valve, ball valve position are arranged from high to low, particular location is determined at the scene, but whole oil return system must be starkly lower than the bottom of the motor on the break-in stand.
Claims (4)
1. a single oilchannel fuel oil engines heat test oil return feeding system includes compressed air line system and oil feed line system, and they are connected with the air feed of engine fuel pipe assembly/oil end by shared air feed/oil pipe; It is characterized in that: a jet threeway is set on air feed/oil pipe, and the air feed/hydraulic fluid port of jet threeway is connected with the compressed air line system, and the vacuum port of jet threeway is connected with fuel rail assembly fuel feeding end, and the return opening of jet threeway is connected with the return line system.
2. the two oil systems that push back of single oil circuit fuel engine according to claim 1, it is characterized in that: the axis of the vacuum port of jet threeway and confession/oil gas mouth is and is in tilted layout, air feed/hydraulic fluid port and return opening are at same axis, corresponding three inner chambers that communicate are arranged in the inside of jet threeway, be respectively negative pressure of vacuum chamber, air feed/oil pocket and oil back chamber, the entry end of air feed/oil pocket has the through hole of a diameter of phi 2, and the through hole end is 60 ° of chamferings, is horn-like from inside to outside.
3. the two oil systems that push back of single oil circuit fuel engine according to claim 1 and 2, it is characterized in that: described return line system comprises scavenger valve, ball valve and the fuel oil pond on the return tube that is connected to jet threeway return opening in turn, and scavenger valve adopts air operated reversing valve.
4. the two oil systems that push back of single oil circuit fuel engine according to claim 1 and 2, it is characterized in that: described compressed air line system by compressed air gas source, blow fuel tap, one-way valve and ball valve and connect and compose by pipeline successively, the oil feed line system is connected and composed by pipeline successively by delivery valve, one-way valve and ball valve, and two systems are connected to the air feed/hydraulic fluid port of jet threeway by shared ball valve; Blow fuel tap, delivery valve and all adopt air operated reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201878540U CN201083156Y (en) | 2007-09-30 | 2007-09-30 | Single oil way oil engine heat test oil feeding returning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201878540U CN201083156Y (en) | 2007-09-30 | 2007-09-30 | Single oil way oil engine heat test oil feeding returning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083156Y true CN201083156Y (en) | 2008-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201878540U Expired - Fee Related CN201083156Y (en) | 2007-09-30 | 2007-09-30 | Single oil way oil engine heat test oil feeding returning system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201083156Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135608B (en) * | 2007-09-30 | 2010-05-26 | 重庆长安汽车股份有限公司 | Single oilchannel fuel oil engines heat test oil return feeding system and method |
-
2007
- 2007-09-30 CN CNU2007201878540U patent/CN201083156Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135608B (en) * | 2007-09-30 | 2010-05-26 | 重庆长安汽车股份有限公司 | Single oilchannel fuel oil engines heat test oil return feeding system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20110930 |