CN215409542U - Auxiliary starting system of engine - Google Patents
Auxiliary starting system of engine Download PDFInfo
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- CN215409542U CN215409542U CN202121716754.9U CN202121716754U CN215409542U CN 215409542 U CN215409542 U CN 215409542U CN 202121716754 U CN202121716754 U CN 202121716754U CN 215409542 U CN215409542 U CN 215409542U
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- power source
- oil tank
- pressure
- oil
- trigger device
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Abstract
The utility model provides an auxiliary starting system of an engine, which comprises a first power source, a second power source and a trigger device, wherein the output end of the first power source is connected with the trigger device and used for providing required high-pressure oil for the trigger device; the output end of the second power source is divided into a first branch and a second branch, and the first branch is connected with the trigger device and is used for providing target rail pressure for the trigger device; the input that the second branch road was connected first power supply is used for improving the oil pressure of first power supply input. The application can meet the requirement of quick pressure build-up and help the engine to normally work.
Description
Technical Field
The utility model relates to an auxiliary starting system of an engine, in particular to an auxiliary starting system of a hydraulically-driven valve engine.
Background
At present, when the hydraulic drive valve engine is started, power is insufficient, pressure build is slow, and the opening speed of the hydraulic drive valve is slow, so that the starting time of the engine is long.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides an auxiliary starting system of an engine, which can realize rapid pressure build and improve the starting speed of the engine. The technical scheme adopted by the utility model is as follows:
an engine auxiliary starting system comprises a first power source, a second power source and a trigger device, wherein the output end of the first power source is connected with the trigger device and used for providing required high-pressure oil for the trigger device;
the output end of the second power source is branched off
The first branch is connected with the trigger device and used for providing target rail pressure for the trigger device;
and the second branch is connected with the input end of the first power source and used for improving the oil pressure of the input end of the first power source.
Further, the system comprises a first oil tank for supplying oil to the system, the input end of the second power source is connected with the first oil tank, and the input end of the first power source is connected with the first oil tank.
Furthermore, a pressure reducing valve is arranged on the second branch and used for maintaining the pressure difference between the input end of the first power source and the output end of the second power source.
Furthermore, a second one-way valve is arranged between the first power source and the first oil tank, and the second one-way valve is communicated with the input end of the first power source in a one-way mode from the first oil tank.
Further, still include second oil tank and third power supply, the second oil tank is connected to the input of third power supply, first oil tank is connected to the output of third power supply for first oil tank fuel feeding.
Further, a filter is arranged between the third power source and the first oil tank.
Further, a bypass valve is arranged between the third power source and the second oil tank.
The utility model has the advantages that: this application utilizes the second power supply to divide a branch road and directly supplies with trigger device, prepares for it provides the work, and the second branch road is connected with the input of first power supply and provides auxiliary pressure for it to the power of the not enough of first power supply is supplemented fast by the second branch road when starting the engine, helps the quick build-up pressure of first power supply, realizes trigger device's quick response, improves the startability of engine.
Drawings
FIG. 1 is a circuit diagram of the present invention.
In the figure: 1-a first power source, 2-a second power source, 3-a trigger device, 4-a first oil tank, 5-a pressure sensor, 6-a pressure reducing valve, 7-a second one-way valve, 8-a proportional flow valve, 9-a second oil tank, 10-a third power source, 11-a filter and 12-a bypass valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, the present invention provides an auxiliary engine starting system, which includes a first power source 1, a second power source 2, a triggering device 3 and a first oil tank 4, wherein an output end of the first power source 1 is connected to the triggering device 3 for providing high-pressure oil to the triggering device 3; the output end of the second power source 2 is divided into a first branch and a second branch, and the first branch is connected with the trigger device 3 and is used for providing target rail pressure for the trigger device 3; the second branch is connected with the input end of the first power source 1 and used for improving the oil pressure of the input end of the first power source 1; the input end of the second power source 2 is connected with a first oil tank 4, and the input end of the first power source 1 is connected with the first oil tank 4.
In the present application, the first power source 1 is a high-pressure pump, the second power source 2 is an electric pump, and the triggering device 3 is a hydraulically driven valve assembly in the engine; the second power source 2 (namely an electric pump) is started firstly, the pressure of the output end of the electric pump reaches the target rail pressure by controlling the rotating speed of the electric pump, hydraulic oil in the first oil tank 4 is pumped into the first branch and the second branch respectively, the hydraulic oil in the first branch enters the trigger device 3 (namely a hydraulic drive valve component) to be supplied for the work of the trigger device, and the hydraulic oil in the second branch enters the input end of the first power source 1 (namely a high-pressure pump); when the engine is started, the high-pressure pump and the hydraulic drive valve assembly work simultaneously, because the engine is started at a low rotating speed, hydraulic oil in the first oil tank 4 is pumped into the hydraulic drive valve assembly by the high-pressure pump in a pressurizing mode, and meanwhile hydraulic oil pumped into the high-pressure pump by the electric pump through the second branch line improves the oil inlet pressure of the input end of the high-pressure pump, so that the high-pressure pump is helped to build pressure quickly, and the starting time of the engine is shortened.
For better monitoring of the oil temperature in the first oil tank 4, a temperature sensor is provided in the first oil tank 4.
In order to better monitor the oil pressure at the output end of the electric pump and avoid the influence of too low or too high oil pressure on the starting efficiency of the engine, the output end of the electric pump is connected with a pressure sensor 5.
The second branch is provided with a pressure reducing valve 6 for maintaining the pressure difference between the input end of the first power source 1 and the output end of the second power source 2; because the pressure value required by the hydraulic drive valve assembly is greater than the pressure value before the high-pressure pump is pressurized, the pressure of the hydraulic oil pressure reducing valve 6 passing through the second branch circuit is reduced and then reaches the input end of the high-pressure pump so as to maintain the pressure difference between the output end of the electric pump and the input end of the high-pressure pump, when the pressure difference is greater than the set value of the pressure reducing valve 6, the pressure reducing valve 6 is opened, and when the pressure difference is less than the set value of the pressure reducing valve 6, the pressure reducing valve 6 is closed, so that the pressure stability of the system is maintained.
In order to improve the pressure building speed of the high-pressure pump, a second one-way valve 7 is arranged between the first power source 1 and the first oil tank 4, and the second one-way valve 7 is conducted from the first oil tank 4 to the input end of the first power source 1 in a one-way mode, so that the pressure building speed is prevented from being influenced by the backflow of hydraulic oil.
In order to better control the proportion between the hydraulic oil mass from the output end of the electric pump to the input end of the high-pressure pump and the hydraulic oil mass from the first oil tank 4 to the input end of the high-pressure pump, the pressure boosting stability of the high-pressure pump is improved, and a proportional flow valve 8 is connected to the input end of the high-pressure pump.
In order to convey hydraulic oil to the first oil tank 4, the hydraulic oil pump further comprises a second oil tank 9 and a third power source 10, wherein the input end of the third power source 10 is connected with the second oil tank 9, and the output end of the third power source 10 is connected with the first oil tank 4 so as to supply oil to the first oil tank 4;
specifically, the third power source 10 is an oil pump, and when the oil pump is turned on, hydraulic oil is delivered from the second oil tank 9 into the first oil tank 4.
In order to improve the cleanliness of the hydraulic oil supply, a filter 11 is provided between the third power source 10 and the first oil tank 4.
Avoid appearing the vacuum state under the airtight circumstances of second oil tank 9 oil pump oil absorption, cause the unable oil absorption problem of oil pump still be equipped with bypass valve 12 between third power supply 10 and the second oil tank 9, utilize bypass valve 12 to ventilate and guarantee that third power supply 10 normally works.
This application utilizes the electric pump to provide hydraulic oil earlier and provides operating condition for hydraulic drive valve subassembly to for the high-pressure pump provides supplementary pressure boost, compensate the slow defect of engine start speed that leads to because the rotational speed is low, oil pump fuel feeding pressure is not enough in the engine start-up process, reach the purpose of building pressure in order to improve engine start speed fast.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (7)
1. An engine assisted starting system, characterized by: the device comprises a first power source (1), a second power source (2) and a trigger device (3), wherein the output end of the first power source (1) is connected with the trigger device (3) and is used for providing required high-pressure oil for the trigger device (3);
the output end of the second power source (2) is divided
The first branch is connected with the trigger device (3) and used for providing target rail pressure for the trigger device (3);
the second branch road, the input of first power supply (1) is connected to the second branch road and is used for improving the oil pressure of first power supply (1) input.
2. The engine assisted starting system of claim 1, characterized in that: still include first oil tank (4) for the system fuel feeding, first oil tank (4) are connected to the input of second power supply (2), first oil tank (4) are connected to the input of first power supply (1).
3. The engine assisted starting system according to claim 1 or 2, characterized in that: and the second branch is provided with a pressure reducing valve (6) for maintaining the pressure difference between the input end of the first power source (1) and the output end of the second power source (2).
4. The engine assisted starting system of claim 2, characterized in that: and a second one-way valve (7) is arranged between the first power source (1) and the first oil tank (4), and the second one-way valve (7) is communicated with the input end of the first power source (1) in a one-way mode from the first oil tank (4).
5. The engine assisted starting system of claim 2, characterized in that: still include second oil tank (9) and third power supply (10), second oil tank (9) are connected to the input of third power supply (10), first oil tank (4) are connected to the output of third power supply (10) for first oil tank (4) fuel feeding.
6. The engine assisted starting system of claim 5, wherein: a filter (11) is arranged between the third power source (10) and the first oil tank (4).
7. The engine assisted starting system of claim 5, wherein: and a bypass valve (12) is arranged between the third power source (10) and the second oil tank (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121716754.9U CN215409542U (en) | 2021-07-27 | 2021-07-27 | Auxiliary starting system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121716754.9U CN215409542U (en) | 2021-07-27 | 2021-07-27 | Auxiliary starting system of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215409542U true CN215409542U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121716754.9U Active CN215409542U (en) | 2021-07-27 | 2021-07-27 | Auxiliary starting system of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215409542U (en) |
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2021
- 2021-07-27 CN CN202121716754.9U patent/CN215409542U/en active Active
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