CN216406929U - Automatic piston cooling oil injection system of accuse temperature - Google Patents
Automatic piston cooling oil injection system of accuse temperature Download PDFInfo
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- CN216406929U CN216406929U CN202122471256.9U CN202122471256U CN216406929U CN 216406929 U CN216406929 U CN 216406929U CN 202122471256 U CN202122471256 U CN 202122471256U CN 216406929 U CN216406929 U CN 216406929U
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Abstract
The utility model discloses an automatic temperature control piston cooling oil injection system, which comprises an engine oil cooling device and an oil pressure control device, wherein the engine oil cooling device and the oil pressure control device are arranged on a lubricating oil pipeline outside an engine body; the engine oil cooling device is used for automatically controlling the flow of the engine oil flowing through the engine oil cooler through the thermostat according to the oil temperature output by the engine oil pump; the oil pressure control device comprises an engine oil opening valve, an engine oil pressure control valve and a bypass filter which are sequentially connected in series, wherein an inlet and an outlet of the bypass filter are respectively communicated with an input end of the engine oil opening valve and an output end of the engine oil pressure control valve, and the engine oil pressure control valve is used for still providing filtered engine oil for the piston nozzle when the engine oil opening valve is closed. The utility model avoids the transitional cooling of the piston, can self-adaptively adjust the engine oil flow of the piston cooling nozzle according to the working condition of the engine, meets the requirement of cooling the piston under different working conditions, and has the advantages of simple structure, low cost and convenient maintenance.
Description
Technical Field
The utility model belongs to the technical field of engines, and relates to an automatic temperature control piston cooling oil injection system.
Background
When a diesel engine works, a piston generates a large amount of heat due to combustion and friction between the piston and a cylinder wall, and a piston cooling nozzle is usually arranged to spray cooling oil to the bottom of the piston so as to cool and lubricate the piston. The lubricating system of the diesel engine is mainly in a pressure lubricating mode. The gear type oil pump sucks the engine oil from the oil pan of the diesel engine through an oil suction pipe, pressurizes the engine oil and then enters the main oil duct, and then supplies the oil to all lubricating points needing oil supply and the piston cooling nozzle from the main oil duct.
However, at the initial starting stage or the small load operation of the diesel engine, the temperature of the piston is not high, and the temperature of the engine oil injected to the piston is too low or the oil injection quantity is too large, so that the piston is cooled excessively, the combustion performance in the cylinder is influenced, and the performance of the diesel engine is reduced; when the diesel engine runs at high speed and under high load, particularly after the turbocharger is involved, the temperature of the piston can be rapidly increased, and the injection of lubricating oil to the piston is required to be increased so as to cool the piston.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model provides an automatic temperature control piston cooling oil injection system, and aims to design a piston cooling oil injection system capable of automatically controlling the injection pressure of engine oil and automatically adjusting the cooling of the engine oil so as to cool a piston under different working conditions.
In order to achieve the purpose, the utility model provides the following technical scheme:
an automatic temperature control piston cooling oil injection system comprises an engine oil cooling device and an oil pressure control device which are arranged on a lubricating oil pipeline outside an engine body;
the engine oil cooling device comprises a thermostat of which the input end is connected to an oil outlet of the engine oil pump, the output end of the thermostat is divided into two paths, one path is connected with the engine oil cooler in series, the other path is converged with the output end of the engine oil cooler to form the output end of the engine oil cooling device, and the output end of the engine oil cooling device is communicated with the oil pressure control device; the engine oil cooling device is used for automatically controlling the flow of the engine oil flowing through the engine oil cooler through the thermostat according to the oil temperature output by the engine oil pump;
the oil pressure control device comprises an engine oil opening valve and an engine oil pressure control valve which are sequentially connected in series, the input end of the engine oil opening valve is communicated with the output end of the engine oil cooling device, and the output end of the engine oil pressure control valve is communicated with the piston nozzle; the engine oil opening valve is a mechanical valve which is controlled to be opened or closed by oil pressure and is used for opening and supplying oil to the piston nozzle when the oil pressure is higher than a preset opening pressure; the oil pressure control valve is internally provided with a backflow mechanism which is used for starting the backflow mechanism to limit the flow of output oil when the oil pressure is higher than the preset highest pressure; the oil pressure control device further comprises a bypass filter, and an inlet and an outlet of the bypass filter are respectively communicated with the input end of the engine oil opening valve and the output end of the engine oil pressure control valve, so that filtered engine oil is still supplied to the piston nozzle when the engine oil opening valve is closed.
As a further optimization, the engine oil filter device is further included; the engine oil filtering device is arranged between the engine oil cooling device and the oil pressure control device and comprises a first engine oil filter and a second engine oil filter, the input ends of the first engine oil filter and the second engine oil filter are communicated with the output end of the engine oil cooling device, the output ends of the first engine oil filter and the second engine oil filter are converged to form the output end of the engine oil filtering device, and the output end of the engine oil filtering device is communicated with the input end of the engine oil opening valve;
as a further optimization, the engine oil filtering device further comprises a bypass valve, wherein the bypass valve is a mechanical valve which is opened or closed under the control of oil pressure and is used for communicating a pipeline when the oil pressure is higher than a preset opening pressure; and the inlet and the outlet of the bypass valve are respectively communicated with the output end of the engine oil cooling device and the input end of the engine oil opening valve.
Preferably, the opening pressure of the bypass valve is greater than the opening pressure of the oil opening valve.
As a further optimization, the output end of the oil filtering device is also communicated with a main oil gallery of an engine body and an oil interface of a turbocharger and used for supplying oil to the main oil gallery and the turbocharger.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the throttling control of the system to the piston cooling nozzle at least comprises four working modes, and the four working modes are sequentially and automatically started along with the running of the engine, so that the system has a self-adaptive function to the working condition of the engine;
(2) the self-adaptive function of the system is established on the basis of mechanical parts, and no electric appliance and program control exist, so that the system has the advantages of simple structure, low cost and convenient maintenance; the engine oil injection system can be used as a hardware basis for further electrically controlling a refined engine oil injection system;
(3) the system is connected with the engine except for the oil way interface, and other devices are arranged outside the engine, so that the engine is basically not changed in design, and the system can be applied to newly produced products and can also be used for upgrading sold old products;
in a word, the utility model avoids the transitional cooling of the piston, can self-adaptively adjust the engine oil flow of the piston cooling nozzle according to the working condition of the engine, meets the requirement of cooling the piston under different working conditions, and has the advantages of simple structure, low cost and convenient maintenance.
Drawings
FIG. 1 is a schematic view of a piping connection structure according to embodiment 1 of the present invention;
fig. 2 is a structural diagram of a first operating state according to embodiment 1 of the present invention;
fig. 3 is a structural diagram of a second operating state according to embodiment 1 of the present invention;
fig. 4 is a structural diagram of a third operating state according to embodiment 1 of the present invention;
fig. 5 is a fourth operating state structural diagram of embodiment 1 of the present invention.
In the figure: 1, an oil cooling device, 11, a thermostat 12, an oil cooling device 2, a first oil filter 21, a second oil filter 22, a bypass valve 23, an oil pressure control device 3, a bypass filter 31, an oil opening valve 32, an oil pressure control valve 32, a turbocharger 5, an engine main oil duct 6, a piston nozzle 7 and an oil pump 8; wherein the arrows indicate the flow of the oil.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the present invention, and it is obvious that the described embodiments are only a part of the preferred embodiments of the present invention, and not all embodiments. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1: please refer to fig. 1-5;
the utility model provides the following technical scheme: an automatic temperature control piston cooling oil injection system comprises an engine oil cooling device 1, an engine oil filtering device 2 and an oil pressure control device 3, wherein the engine oil cooling device 1, the engine oil filtering device 2 and the oil pressure control device 3 are arranged on a lubricating oil pipeline outside an engine body;
the engine oil cooling device 1 comprises a thermostat 11 of which the input end is connected with an oil outlet of the engine oil pump 8, the output end of the thermostat 11 is divided into two paths, one path is connected with the engine oil cooler 12 in series, the other path is converged with the output end of the engine oil cooler 12 to form the output end of the engine oil cooling device 1, and the output end of the engine oil cooling device 1 is communicated with the engine oil filtering device 2; the engine oil cooling device 1 is used for automatically controlling the flow of the engine oil flowing through the engine oil cooler 12 through the thermostat 11 according to the oil temperature output by the engine oil pump 8; when the oil temperature is lower than the opening temperature of the thermostat 11, the thermostat 11 cuts off an oil path flowing to the oil cooler 12, so that the engine oil output by the engine oil pump 8 flows to the filtering device 2; when the oil temperature output by the oil pump 8 is gradually increased, the opening degree of the thermostat 11 is gradually increased, so that the flow rate of the engine oil flowing to the engine oil cooler 12 is increased, and the temperature of the engine oil flowing to the filtering device 2 is reduced;
the engine oil filtering device 2 comprises a first engine oil filter 21 and a second engine oil filter 22, the input ends of the first engine oil filter 21 and the second engine oil filter 22 are communicated with the output end of the engine oil cooling device 1, the output ends of the first engine oil filter 21 and the second engine oil filter 22 are converged to form the output end of the engine oil filtering device 2, and the output end of the engine oil filtering device 2 is communicated with the oil pressure control device 3; the engine oil filtering device 2 further comprises a bypass valve 23, wherein the bypass valve 23 is a mechanical valve which is controlled to be opened or closed by oil pressure, the bypass valve 23 enables a pipeline which flows through to be communicated when the oil pressure is higher than the opening pressure, and the pipeline which flows through is closed when the oil pressure is lower than the opening pressure; the bypass valve 23 is used for opening when the oil pressure input into the oil filter device 2 is too high, so as to increase the output flow of the oil filter device 2, and is also used for ensuring the flow of the output end of the oil filter device 2 when the first oil filter 21 and the second oil filter 22 are blocked;
the oil pressure control device 3 is used for controlling the flow of engine oil flowing to the piston nozzle and comprises an engine oil opening valve 32 and an engine oil pressure control valve 33 which are sequentially connected in series, the input end of the engine oil opening valve 32 is communicated with the output end of the engine oil filtering device 2, and the output end of the engine oil pressure control valve 33 is communicated with the piston nozzle; the engine oil opening valve 32 is a mechanical valve which is controlled to be opened or closed by oil pressure and is used for opening and supplying oil to a piston nozzle when the oil pressure is higher than a preset opening pressure, and a backflow mechanism is arranged in the engine oil pressure control valve 33 and is used for opening the backflow mechanism to limit the flow of the output engine oil when the oil pressure is higher than a preset maximum pressure; the oil pressure control device 3 further comprises a bypass filter 31, and an inlet and an outlet of the bypass filter 31 are respectively communicated with the output end of the engine oil filtering device 2 and the output end of the engine oil pressure control valve 33, so that filtered engine oil is still supplied to a piston nozzle when the engine oil opening valve 32 is closed;
the output end of the oil filter 2 is also communicated with a main oil gallery 6 of an engine body and an oil interface of the turbocharger 5, and is used for providing oil for the main oil gallery 6 and the turbocharger 5.
When in use, the bypass filter 31, the first oil filter 21 and the second oil filter 22 can play a role in filtering; when the engine oil opening valve 32 and the bypass valve 23 are in a closed state, the engine oil flowing to the piston nozzle is filtered twice; the engine oil opening valve 32 and the bypass valve 23 are mechanical valves controlled by oil pressure, so that when the engine is started, the engine oil pressure output by the oil pump 8 is low, the engine oil opening valve 32 and the bypass valve 23 are both in a closed state, the piston is also in the initial working stage, the temperature is low, and cooling is not needed; the engine oil flows through the first oil filter 21, the second oil filter 22 and the bypass filter 31, flows to the piston nozzle after two-stage filtration, and the flow sprayed from the nozzle is small, so that only a lubricating effect is achieved.
In the initial working stage after the engine is started, along with the increase of the rotating speed of the engine, the pressure of the engine oil output by the oil pump 8 is gradually increased, the engine oil opening valve 32 enters an opening state, and the piston nozzle normally works; at this moment, the engine oil circulation just begins, and the oil temperature is not high, does not need the cooling, is controlled by thermostat 11 this moment, and most flow also does not get into engine oil cooler 12 to receive the restriction of engine oil pressure control valve 33, avoid the fuel injection quantity of piston nozzle too big and make the piston transition cooling, influence the burning in the cylinder.
And (3) entering a normal working state along with the continuous working of the engine, wherein the engine oil temperature is increased due to the circulation of the engine oil, the opening of the thermostat 11 is gradually increased, the flow of the engine oil cooler 12 is increased, the engine oil is cooled, and the piston nozzle also enters the normal working state. At this time, since the bypass valve 23 opening pressure is greater than the opening pressure of the oil opening valve 32, the bypass valve 23 is not opened, so that the first oil filter 21 and the second oil filter 22 also enter the normal operating state.
When the engine enters a high-speed operation state with a large load, the engine is at a high temperature, and the piston needs more cooling. At this moment, along with the engine speed improvement, the output pressure of oil pump 8 improves thereupon, after the oil pressure that oil pump 8 output reached start-up bypass valve 23, actually be with first oil filter 21 and second oil filter 22 short circuit, the flow is preferred, the pressure and the flow of engine oil filter 2 output have been increaseed, owing to receive the restriction of engine oil pressure control valve 33, parallelly connected bypass filter 31 provides the bypass outlet for the engine oil outside the restriction of engine oil pressure control valve 33 this moment, make the fuel injection quantity of piston nozzle no longer controlled by engine oil pressure control valve 33, continue large-traffic injection to the piston bottom, for the piston cooling.
In summary, the system provides at least four operating modes for the piston nozzle:
the first working state (please refer to fig. 2) is briefly described as no cooling and low flow, and when the engine is started, the engine oil opening valve 32, the engine oil pressure control valve 33, the bypass valve 23 and the engine oil cooler 12 are all closed;
the second working state (please refer to fig. 3) is briefly described as non-cooling, normal flow, and is applied to the initial working stage after the engine is started, at this time, the oil opening valve 32 and the oil pressure control valve 33 are in the opening state, while the bypass valve 23 is closed and the oil cooler 12 does not work;
the third working state (please refer to fig. 4) is briefly described as cooling and normal flow, and is applied to the normal working state of the engine, wherein the engine oil opening valve 32 and the engine oil pressure control valve 33 are opened, the engine oil cooler 12 is in the working state, and the bypass valve 23 is closed;
the fourth operating state (see fig. 5) is briefly described as cooling and flow rate priority, and when the engine is operated at high speed and high load, the oil opening valve 32, the oil pressure control valve 33 and the bypass valve 23 are all opened, and the oil cooler 12 is also in an operating state.
The embodiment has the advantages that:
(1) the throttling control of the system to the piston cooling nozzle at least comprises four working modes, and the four working modes are sequentially and automatically started along with the running of the engine, so that the system has a self-adaptive function to the working condition of the engine;
(2) the self-adaptive function of the system is established on the basis of mechanical parts, and no electric appliance and program control exist, so that the system has the advantages of simple structure, low cost and convenient maintenance; the engine oil injection system can be used as a hardware basis for further electrically controlling a refined engine oil injection system;
(3) the system is connected with the engine except for the oil way interface, and other devices are arranged outside the engine, so that the engine is basically not changed in design, and the system can be applied to newly produced products and can also be used for upgrading sold old products;
in a word, the system avoids transition cooling of the piston, can adjust the engine oil flow of the piston cooling nozzle according to the working condition of the engine in a self-adaptive manner, meets the requirement of cooling the piston under different working conditions, and has the advantages of simple structure, low cost and convenience in maintenance.
The utility model is not described in detail in the prior art; for a person skilled in the art, various technical features of the embodiments described above may be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations should be considered as the scope of the present description. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an automatic piston cooling oil spout system of accuse temperature which characterized in that: the engine oil cooling device comprises an engine oil cooling device (1) and an oil pressure control device (3) which are arranged on a lubricating oil pipeline outside an engine body;
the engine oil cooling device (1) comprises a thermostat (11) of which the input end is connected to an oil outlet of the engine oil pump (8), the output end of the thermostat (11) is divided into two paths, one path is connected with the engine oil cooler (12) in series, the other path is converged with the output end of the engine oil cooler (12) to form the output end of the engine oil cooling device (1), and the output end of the engine oil cooling device (1) is communicated with the oil pressure control device (3); the engine oil cooling device (1) is used for automatically controlling the flow of the engine oil flowing through the engine oil cooler (12) through the thermostat (11) according to the oil temperature output by the engine oil pump (8);
the oil pressure control device (3) comprises an engine oil opening valve (32) and an engine oil pressure control valve (33) which are sequentially connected in series, the input end of the engine oil opening valve (32) is communicated with the output end of the engine oil cooling device (1), and the output end of the engine oil pressure control valve (33) is communicated with a piston nozzle; the engine oil opening valve (32) is a mechanical valve which is controlled to be opened or closed by oil pressure and is used for opening and supplying oil to the piston nozzle when the oil pressure is higher than the preset opening pressure; a backflow mechanism is arranged inside the engine oil pressure control valve (33) and used for starting the backflow mechanism to limit the flow of output engine oil when the oil pressure is higher than the preset highest pressure; the oil pressure control device (3) further comprises a bypass filter (31), and an inlet and an outlet of the bypass filter (31) are respectively communicated with an input end of the engine oil opening valve (32) and an output end of the engine oil pressure control valve (33) and used for still providing filtered engine oil for the piston nozzle when the engine oil opening valve (32) is closed.
2. The automatic temperature controlled piston-cooled oil injection system of claim 1, wherein: the engine oil filter device (2) is also included;
the engine oil filtering device (2) is arranged between the engine oil cooling device (1) and the oil pressure control device (3) and comprises an input end, wherein the input end is communicated with a first engine oil filter (21) and a second engine oil filter (22) at the output end of the engine oil cooling device (1), the output ends of the first engine oil filter (21) and the second engine oil filter (22) are converged to form an output end of the engine oil filtering device (2), and the output end of the engine oil filtering device (2) is communicated with the input end of the engine oil opening valve (32).
3. The automatic temperature controlled piston-cooled oil injection system of claim 2, wherein: the engine oil filtering device (2) further comprises a bypass valve (23), wherein the bypass valve (23) is a mechanical valve which is controlled to be opened or closed by oil pressure and is used for communicating a pipeline when the oil pressure is higher than a preset opening pressure; and the inlet and the outlet of the bypass valve (23) are respectively communicated with the output end of the engine oil cooling device (1) and the input end of the engine oil opening valve (32).
4. The automatic temperature controlled piston-cooled oil injection system of claim 3, wherein: the opening pressure of the bypass valve (23) is greater than the opening pressure of the oil opening valve (32).
5. The automatic temperature controlled piston-cooled oil injection system of claim 2, wherein: the output end of the engine oil filtering device (2) is also communicated with a main oil gallery (6) of an engine body and an engine oil interface of the turbocharger (5) and used for providing engine oil for the main oil gallery (6) and the turbocharger (5).
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| CN202122471256.9U CN216406929U (en) | 2021-10-13 | 2021-10-13 | Automatic piston cooling oil injection system of accuse temperature |
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| CN202122471256.9U CN216406929U (en) | 2021-10-13 | 2021-10-13 | Automatic piston cooling oil injection system of accuse temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775390B (en) * | 2021-10-13 | 2024-05-14 | 河南柴油机重工有限责任公司 | Automatic piston cooling oil injection system of accuse temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775390B (en) * | 2021-10-13 | 2024-05-14 | 河南柴油机重工有限责任公司 | Automatic piston cooling oil injection system of accuse temperature |
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