CN216665797U - Self-suction constant-pressure oil supply device for internal combustion engine - Google Patents
Self-suction constant-pressure oil supply device for internal combustion engine Download PDFInfo
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- CN216665797U CN216665797U CN202122402684.6U CN202122402684U CN216665797U CN 216665797 U CN216665797 U CN 216665797U CN 202122402684 U CN202122402684 U CN 202122402684U CN 216665797 U CN216665797 U CN 216665797U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention provides a self-absorption constant-pressure oil supply device of an internal combustion engine, which structurally comprises three parts: firstly, a fuel pump is self-absorbed; an oil path module; ③ constant pressure valve: after the self-priming fuel pump is started, suction is generated to suck fuel through the oil suction pipe, the sucked fuel is pressurized in the pump and then guided to the input port of the oil way module through the oil supply port, enters the oil way module, the fuel entering the oil way module is respectively guided to the oil supply port and the pressure relief port, is guided to the fuel of the oil supply port and then is continuously guided to the fuel distributor or the fuel common rail of the internal combustion engine, the fuel is quantitatively and orderly fed into the cylinder under the control of the ECU, the fuel guided to the pressure relief port is controlled by the constant pressure port of the constant pressure valve, quantitatively enters the constant pressure valve, passes through the oil return port of the constant pressure valve, is guided to the oil return pipe and is sent back to the fuel container or other containers to be collected. The internal combustion engine provided with the device can realize automatic oil supply under the condition of only being provided with a common oil tank/oil barrel, the oil tank/oil barrel for supplying oil to the internal combustion engine does not need an integrated fuel oil pumping device any more, and only an oil suction pipe is required to be inserted into the oil tank/oil barrel from an inlet of the oil tank/oil barrel and is immersed below the liquid level of fuel.
Description
Technical Field
The invention relates to an oil supply device of an internal combustion engine, in particular to a self-absorption constant-pressure oil supply device of the internal combustion engine, belonging to the field of internal combustion engine engineering.
Background
At present, along with the improvement of environmental protection requirements and user requirements on the performance of a general internal combustion engine (hereinafter referred to as a general engine), more and more general engines start to adopt an electronic control fuel injection technology. Different from the prior carburetor technology which does not require fuel pressure, the realization of electric control fuel injection requires a higher and constant fuel pressure, in a vehicle or marine engine equipped with a fixed fuel tank, this constant fuel pressure may be provided by a submerged fuel pump assembly integrated in the fuel tank, the general engine is different from the vehicle and ship engines, a fixed fuel tank is not arranged at many times, but common containers such as iron barrels, plastic barrels and the like are used for containing fuel oil to supply the fuel oil, it is difficult to install and implement the conventional submerged fuel pump assembly to supply the fuel at a constant pressure, because it is not possible for a conventional container to have a mounting flange and sealing system for securing a submerged fuel pump assembly as in a specially designed fuel tank, and a series of new problems of too small fuel capacity, inconvenient refueling, power supply wiring of a fuel pump assembly and the like are brought to the general gasoline engine with the fixed fuel tank.
The above-mentioned problems in the aspect of fuel supply limit the application of the electronic control fuel injection technology to the general-purpose engine to a great extent, and are not favorable for improving the environmental protection performance and the service performance of the general-purpose engine.
In order to effectively solve the problem of constant-pressure fuel supply of the general-purpose engine, a constant-pressure fuel supply device which can adapt to the actual use condition of the general-purpose engine, can be compactly installed with the general-purpose engine and can directly supply fuel to an internal combustion engine from a common container on the premise of not changing a container to realize the constant-pressure fuel required by an electronic control fuel injection technology needs to be developed.
The invention is a novel self-priming constant-pressure oil supply device for an internal combustion engine, which is developed aiming at the problems.
Disclosure of Invention
The invention provides a self-priming constant-pressure oil supply device of an internal combustion engine, which structurally comprises three parts: firstly, a fuel pump is self-absorbed; an oil path module; ③ constant pressure valve:
the self-suction fuel pump is provided with an oil suction opening and an oil supply opening.
The oil circuit module II is provided with an input port, an oil supply port and a pressure relief port.
The constant pressure valve is provided with a constant pressure port and an oil return port.
An oil suction port of the first self-priming fuel pump is connected with an oil suction pipe; the oil suction pipe is inserted into the fuel storage container, the pipe orifice is arranged below the liquid level of the fuel oil, and the fuel oil filtering device can be arranged on the oil suction pipe.
And an oil supply port of the self-absorption fuel pump I is connected with an input port of the oil way module II.
And an oil supply port of the oil circuit module II is connected with a fuel oil distributor or a fuel common rail of the internal combustion engine, and fuel oil is sprayed to the fuel oil distributor or the fuel common rail of the internal combustion engine according to control requirements during working to supply oil to the internal combustion engine.
The pressure relief port of the oil circuit module II is connected with the constant pressure port of the constant pressure valve III, when the oil pressure on the oil circuit module II is higher than a set constant pressure value, the constant pressure port is opened, a part of fuel enters the constant pressure valve III to realize the pressure relief of the oil pressure, when the oil pressure in the oil way module II is equal to or less than a set constant pressure value, the constant pressure port is closed, the oil pressure of the oil circuit module II is increased to a set value under the condition that the self-priming fuel pump I continuously pumps fuel from the fuel container, the oil way module II circularly and repeatedly works to achieve the purpose of stabilizing the pressure of the fuel oil in the oil way module II, wherein the fuel oil with the constant pressure in the oil way module II enters the fuel oil distributor or the fuel common rail of the internal combustion engine from the oil supply port of the oil way module II and is sprayed to the cylinder of the internal combustion engine through the oil sprayer to achieve constant-pressure oil supply to the internal combustion engine;
and the constant pressure valve (c) releases redundant fuel on the oil way module (c) through the opening and closing of the constant pressure port corresponding to the change of the oil pressure on the oil way module (c) to keep the oil pressure on the oil supply pipeline of the internal combustion engine constant, so that constant-pressure oil supply to the internal combustion engine is realized, and the internal combustion engine can smoothly realize electric control fuel injection.
An oil return port of the constant pressure valve (III) is connected with an oil return pipe;
the oil return pipe is inserted into the fuel container of the internal combustion engine to guide the fuel released by the constant pressure valve and released by pressure relief back to the fuel container or other containers.
After the self-absorption fuel pump is started, suction force is generated to suck fuel through an oil suction pipe, the sucked fuel is pressurized in the pump and then is guided to an input port of the oil circuit module II through an oil supply port to enter the oil circuit module III:
when the oil pressure in the oil circuit module II is equal to a set oil pressure value, the fuel oil entering the oil circuit module is guided to the oil supply port, and the fuel oil guided to the oil supply port is continuously conveyed to a fuel oil distributor of an internal combustion engine or a fuel common rail and then quantitatively and orderly enters the cylinder under the control of an ECU (electronic control unit) of the engine;
when the oil pressure in the oil circuit module II is smaller than a set oil pressure value, the self-priming fuel pump I continuously pressurizes to enable the oil pressure in the oil circuit module II to reach a set value and guide to a fuel distributor or a fuel common rail of the internal combustion engine;
when the oil pressure of the oil way module II is higher than a set value, a part of fuel oil is guided to the pressure relief port, the constant pressure port of the constant pressure valve III is opened at the moment, the fuel oil reaching the pressure relief port of the oil way module III enters the constant pressure valve III through the constant pressure port of the constant pressure valve III, and then is guided to the oil return pipe through the oil return port of the constant pressure valve III and is sent back to the fuel container;
in order to increase the protection of the internal combustion engine, a fuel filter can be arranged on the suction pipe during actual operation.
The fuel oil self-priming pump (I) is a pumping device with self-priming capability and supercharging capability under the driving of electric power, compressed air or mechanical torque:
the self-priming capability of the fuel self-priming pump (I) refers to the capability of running under the condition that the pump is not filled with oil liquid, generating negative pressure with certain strength at a suction inlet and driving the oil liquid with the liquid level lower than the suction inlet of a fuel pipe to enter the pump through an oil suction pipe under the driving of the negative pressure;
the pressurizing capacity of the fuel oil self-sucking pump II refers to the capacity that the fuel oil in the pump can be pressurized to required pressure intensity and then output from the oil supply port in the operation of the pump.
The oil circuit module is a three-way device and is provided with three ports, namely an input port connected with a pipeline of an oil supply port of the self-absorption fuel pump, an oil supply port connected with a pipeline of a fuel distributor or a fuel common rail of the internal combustion engine and a pressure relief port connected with a pipeline of a constant pressure end of the constant pressure valve.
The constant pressure valve is a valve device for adjusting the pressure of fuel oil and is provided with a constant pressure port and an oil return port, the constant pressure port is connected with an inner cavity pipeline of the oil way module, and the oil return port is connected with a fuel oil container pipeline;
when the fuel pressure of the constant pressure port is smaller than a set constant pressure value, the constant pressure port is not communicated with the oil return port, so that the fuel is driven by the fuel self-priming pump to accumulate pressure in the inner cavity of the oil way module II, when the fuel pressure of the constant pressure port is larger than the set constant pressure value, the constant pressure port is gradually communicated with the oil return port, so that the fuel in the inner cavity of the oil way module II is finally discharged back to a fuel container through the constant pressure port and the oil return port, the fuel in the inner cavity of the oil way module is kept at the set pressure value in the circulating manner, the purpose of providing constant pressure fuel for the internal combustion engine is achieved, and the internal combustion engine can stably and normally work under any working condition.
The implementation of the invention has the following effects:
1. the internal combustion engine provided with the device can automatically suck liquid fuel during running, so that self-powered oil supply is realized, and external auxiliary oil supply devices such as an immersed fuel pump and the like are not needed for supplying oil, so that the internal combustion engine is integrated and compact in design and simple and convenient to install and use;
2. the internal combustion engine provided with the device does not need to realize the oil supply of liquid fuel by gravity or vacuum phenomena such as siphon principle and the like, so that the operation of the internal combustion engine is not restricted by external environmental conditions;
3. all internal combustion engines using liquid fuel can realize automatic oil supply under the condition of only being equipped with a common oil tank/oil drum, and the oil drum/oil tank only needs to have the function of storing fuel without integrating a pumping device;
4. the internal combustion engine provided with the device does not need to be provided with any power supply circuit in the fuel tank for the fuel pump like the traditional electric control internal combustion engine, so that the risk of ignition and explosion of the fuel tank caused by electric leakage, ignition and the like of the power supply circuit of the fuel pump can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an overall structural view of a self-priming constant-pressure oil supply device for an internal combustion engine according to an embodiment of the present invention, according to which the self-priming constant-pressure oil supply device for an internal combustion engine according to the present invention includes three parts: firstly, a fuel pump is self-absorbed; an oil path module; and thirdly, a constant pressure valve.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The details will be described below.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention, and the appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The appearances of any reference numbers such as "r", "c" … or "first", "second", "third" … or any other similar numbers in the description and claims of the present invention and the accompanying drawings are herein for convenience only to distinguish between different objects and not to describe a particular order unless specifically stated. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements, but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, the self-priming constant-pressure oil supply device of the internal combustion engine of the present invention is composed of three parts, which are respectively: firstly, a fuel pump is self-absorbed; an oil path module; ③ constant pressure valve:
the self-priming fuel pump has two ports, one is an oil suction port and the other is an oil feeding port.
The oil circuit module II is provided with three ports, one is an input port, the other is an oil supply port, and the other is a pressure relief port.
The constant pressure valve III is provided with two ports, one is a constant pressure port and the other is an oil return port;
and the constant pressure port of the constant pressure valve III is automatically opened when the pressure is greater than a set value, so that the oil circuit module II is communicated with the constant pressure valve III and is closed when the pressure is less than or equal to the set value, and the port of an oil circuit channel between the oil circuit module II and the constant pressure valve III is cut off.
An oil suction port of the self-priming fuel pump is connected with an oil suction pipe;
the oil suction pipe is inserted into the fuel storage container, the pipe orifice is below the liquid level of the fuel oil, and the fuel oil filtering device is arranged on the oil suction pipe, so that the internal combustion engine can obtain cleaner fuel, and the service life is prolonged;
and an oil supply port of the self-absorption fuel pump I is connected with an input port of the oil way module II.
And an oil supply port of the oil circuit module II is connected with the internal combustion engine fuel oil distributor, and fuel oil is sprayed to the internal combustion engine fuel oil distributor according to a control requirement during working to supply oil to the internal combustion engine.
And the pressure relief port of the oil way module II is connected with the constant pressure port of the constant pressure valve III, and redundant fuel oil is guided to the constant pressure valve III through the pressure relief port and the constant pressure port and is released to the oil return pipe at the oil return port when the oil pressure in the oil way module II is higher than a set value.
An oil return port of the constant pressure valve III is connected with the oil return pipe;
the oil return pipe is inserted into the fuel container of the internal combustion engine, and the fuel released by pressure relief is guided back into the fuel container or other containers.
After the self-priming fuel pump is started, suction force is generated to suck fuel through the oil suction pipe, the sucked fuel is pressurized in the pump and then is guided to the input port of the oil way module after passing through the oil supply port, the fuel enters the oil way module and then is respectively guided to the oil supply port and the pressure relief port, the fuel guided to the oil supply port is continuously transmitted to the fuel distributor or the fuel common rail of the internal combustion engine and then quantitatively and orderly enters the cylinder under the control of an Electronic Control Unit (ECU), when the oil pressure of the fuel guided to the pressure relief port is smaller than or equal to a set value, the constant pressure port of the constant pressure valve is closed and stays in the pressure relief port, when the oil pressure is larger than the set value, the constant pressure port of the constant pressure valve is opened, namely is guided to the oil return port and is returned to a fuel container or other containers along with the oil return pipe, and the cycle is repeated, and the fuel pressure in the oil way module is maintained to be close to a set value, so that the aim of constant-pressure fuel supply is fulfilled.
In order to enhance the protection of the internal combustion engine, a fuel filter may be provided on the suction pipe in actual operation.
Claims (4)
1. A self-priming constant-pressure oil supply device of an internal combustion engine is characterized by comprising three parts: firstly, a fuel pump is self-absorbed; an oil path module; ③ constant pressure valve:
the self-priming fuel pump has two ports: an oil suction port and an oil supply port;
the oil circuit module is provided with three ports which are respectively an input port, an oil supply port and a pressure relief port;
the constant pressure valve is provided with two ports, namely a constant pressure port and an oil return port;
an oil suction port of the self-priming fuel pump is connected with an oil suction pipe;
an oil supply port of the self-absorption fuel pump is connected with an input port pipeline of the oil circuit module;
the oil supply port of the oil circuit module is connected with the fuel distributor or the fuel common rail pipeline of the internal combustion engine, and when the oil circuit module works, the fuel pumped by the self-priming fuel pump is sprayed out of the fuel distributor or the fuel common rail of the internal combustion engine according to the requirement, so that the oil supply to the internal combustion engine is realized;
the pressure relief port of the oil way module is connected with a constant pressure port of the constant pressure valve through a pipeline, when the oil pressure in the oil way module is higher than a set value, the constant pressure port is opened, redundant fuel oil is released from the pressure relief port and then is guided to the constant pressure valve through the opened constant pressure port to achieve pressure relief, when the oil pressure in the oil way module is smaller than or equal to the set value, the constant pressure port is closed, and the fuel oil is remained in the oil way module and then is guided to the oil supply port;
an oil return port of the constant pressure valve is connected with an oil return pipe;
the oil return pipe is inserted into the fuel container or other containers of the internal combustion engine to guide the fuel released by pressure relief of the constant pressure valve through the constant pressure port back to the fuel container or other fuel containers for storage;
when the internal combustion engine is started, the self-priming fuel pump is started simultaneously to generate suction force to suck fuel in the fuel container through the oil suction pipe, the sucked fuel enters the self-priming fuel pump along the oil suction pipe, the fuel oil is pressurized in the pump and then enters the oil way module through the oil supply port and the input port of the oil way module, the fuel oil entering the oil way module is respectively guided to the oil supply port and the pressure relief port, the fuel oil guided to the oil supply port is continuously guided to the fuel oil distributor or the fuel common rail of the internal combustion engine, the fuel guided to the pressure relief port quantitatively passes through the constant pressure valve and the oil return pipe under the control of the constant pressure valve and finally flows back to a fuel container or other containers, thereby maintaining the stability of the fuel pressure in the oil circuit module and realizing the engineering target of self-priming constant-pressure oil supply;
in order to increase the protection of the internal combustion engine, a fuel filter can be arranged on the oil suction pipe during actual operation.
2. The self-priming constant pressure fuel supply device of an internal combustion engine according to claim 1, comprising a fuel self-priming pump:
the fuel self-priming pump is a pumping device with self-priming capability and supercharging capability under the action of electric power, compressed air or mechanical traction force;
the self-priming capacity of the fuel self-priming pump refers to the capacity of running under the condition that the pump is not filled with oil, generating negative pressure with certain strength at a suction inlet and driving the oil with the liquid level lower than the pipe orifice of an oil suction pipe to enter the pump under the driving of the negative pressure;
the supercharging capacity of the fuel oil self-priming pump refers to the capacity that the pump can pressurize fuel oil in the pump to required pressure intensity and then output the fuel oil from the oil supply port in operation.
3. The self-priming constant pressure oil supply device of an internal combustion engine according to claim 1, comprising an oil circuit module:
the oil circuit module is a three-way device and is provided with three ports, and one port is an input port and is connected with an oil feed port pipeline of the self-absorption fuel pump; one port is an oil supply port and is connected with an oil supply port pipeline of a fuel distributor or a fuel common rail of the internal combustion engine; and the other port is a pressure relief port and is connected with a constant pressure port pipeline of the constant pressure valve.
4. The self-priming constant pressure oil supply device of an internal combustion engine according to claim 1, comprising a constant pressure valve:
the constant pressure valve is a valve device for adjusting fuel pressure, and is provided with a constant pressure port and an oil return port, the constant pressure port is connected with an inner cavity pipeline of the oil way module, the oil return port is connected with a fuel container pipeline, when the fuel pressure of the constant pressure port is smaller than a set constant pressure value, the constant pressure port is closed, fuel is driven by the fuel self-priming pump to accumulate pressure in the inner cavity of the oil way module and is guided to the internal combustion engine fuel distributor or the fuel common rail, when the fuel pressure of the constant pressure port is larger than the set constant pressure value, the constant pressure port is opened, the oil way module is communicated with the constant pressure valve, redundant fuel enters the constant pressure valve through a pressure relief port of the oil way module and the constant pressure port of the constant pressure valve, and finally flows back to the fuel container or other containers through the oil return port of the constant pressure valve, so circulation enables the fuel in the inner cavity of the oil way module to keep the set pressure value, the engineering aim of providing constant-pressure fuel oil for the internal combustion engine is fulfilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122402684.6U CN216665797U (en) | 2021-10-07 | 2021-10-07 | Self-suction constant-pressure oil supply device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122402684.6U CN216665797U (en) | 2021-10-07 | 2021-10-07 | Self-suction constant-pressure oil supply device for internal combustion engine |
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| Publication Number | Publication Date |
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| CN216665797U true CN216665797U (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122402684.6U Active CN216665797U (en) | 2021-10-07 | 2021-10-07 | Self-suction constant-pressure oil supply device for internal combustion engine |
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- 2021-10-07 CN CN202122402684.6U patent/CN216665797U/en active Active
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