Internal combustion engine preheating device

Abstract

The application discloses an internal combustion engine preheating device which is used for preheating the bottom of an oil pan of a large engine and comprises a preheating mechanism, an air inlet joint, an air outlet joint and a preheating pipeline. The preheating mechanism is fixedly connected with the bottom of the oil pan to form a preheating sealed preheating cavity, and one end of the preheating mechanism is provided with a first opening and a second opening. The air inlet joint is fixed on the first opening and is used for allowing high-temperature gas to enter. The air outlet joint is fixed on the second opening and is used for discharging the high-temperature gas. The preheating pipeline is arranged in the preheating mechanism, one end of the preheating pipeline is detachably fixedly connected with one end of the air inlet joint, and the other end of the preheating pipeline is detachably fixedly connected with one end of the air outlet joint. Therefore, the internal combustion engine preheating device is simple and reasonable in structure, can heat the oil pan and is beneficial to starting the engine.

Description

Internal combustion engine preheating device Technical Field

[0001] This invention relates to the field of internal combustion engine technology, and in particular to an internal combustion engine preheating device. Background Technology

[0002] Because internal combustion engines are difficult to start in low-temperature environments, they need to be preheated.

[0003] The general preheating technology for internal combustion engines is as follows:

[0004] 1. Use an electric heater to heat water, and then use the hot water to heat the cylinder liner and lubricating oil of the internal combustion engine;

[0005] 2. Use an electric heating wire preheater to heat the intake air of the internal combustion engine;

[0006] 3. Use a flame jet preheater to heat the intake air of the internal combustion engine.

[0007] Large engines require high-power heaters, large-capacity batteries, or external cables for preheating. Problems with power supply to high-power heaters, high battery costs, or the lack of an external power source make it difficult to start large engines. Using flame jet preheaters results in insufficient preheating power and complex control, making them unsuitable for large engines.

[0008] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0009] The purpose of this invention is to provide an internal combustion engine preheating device with a simple and reasonable structure, which can heat the oil pan, thereby facilitating the starting of large engines.

[0010] To achieve the above objectives, the present invention provides an internal combustion engine preheating device for preheating the bottom of the oil pan of a large engine. The internal combustion engine preheating device includes: a preheating mechanism, an intake connector, an exhaust connector, and a preheating pipe. The preheating mechanism is fixedly connected to the bottom of the oil pan to form a preheating sealed preheating cavity, and one end of the preheating mechanism has a first opening and a second opening. The intake connector is fixed to the first opening and is used to allow high-temperature gas to enter. The exhaust connector is fixed to the second opening and is used to discharge the high-temperature gas. The preheating pipe is disposed within the preheating mechanism, one end of the preheating pipe is detachably and fixedly connected to one end of the intake connector, and the other end of the preheating pipe is detachably and fixedly connected to one end of the exhaust connector.

[0011] In one embodiment of the present invention, the internal combustion engine preheating device further includes a gas supply mechanism for supplying the high-temperature gas, and the gas supply mechanism is detachably fixedly connected to the other end of the air intake connector.

[0012] In one embodiment of the present invention, the internal combustion engine preheating device further includes: a first sealing mechanism and a second sealing mechanism. The first sealing mechanism is disposed between the intake connector and the preheating mechanism; and the second sealing mechanism is disposed between the intake connector and the preheating pipe.

[0013] In one embodiment of the present invention, the internal combustion engine preheating device further includes a third sealing mechanism and a fourth sealing mechanism. The third sealing mechanism is disposed between the exhaust connector and the preheating mechanism; and the fourth sealing mechanism is disposed between the exhaust connector and the preheating pipe.

[0014] In one embodiment of the present invention, the preheating mechanism includes a base and a baffle. The base is rectangular and has a hollow structure; one end of the baffle is fixedly connected to one end of the preheating mechanism and extends to the other end of the preheating mechanism, and there is a distance between the other end of the baffle and the other end of the preheating mechanism.

[0015] In one embodiment of the present invention, the base and the baffle are at the same height.

[0016] In one embodiment of the present invention, a sealing groove is provided on the top of both the base and the baffle.

[0017] In one embodiment of the present invention, the internal combustion engine preheating device further includes a fifth sealing mechanism and a sixth sealing mechanism. The fifth sealing mechanism is disposed in a sealing groove of the base, and the top of the base is fixedly connected to the bottom of the oil pan; and the sixth sealing mechanism is disposed in a sealing groove of the baffle, and the top of the baffle is fixedly connected to the bottom of the oil pan.

[0018] In one embodiment of the present invention, the preheating pipe is U-shaped.

[0019] In one embodiment of the present invention, the preheating mechanism is provided with heat-insulating material.

[0020] Compared with the prior art, the internal combustion engine preheating device according to the present invention has a simple and reasonable structure. It uses high-temperature gas to heat the oil pan, and the heat from the oil pan is conducted to the lubricating oil and various parts such as the engine cylinder block, so that the engine temperature rises and it is conducive to starting. Attached Figure Description

[0021] Figure 1 is a three-dimensional structural diagram of an internal combustion engine preheating device installed on an oil pan according to an embodiment of the present invention.

[0022] Figure 2 is a cross-sectional view of an internal combustion engine preheating device installed on an oil pan according to an embodiment of the present invention.

[0023] Figure 3 is a three-dimensional structural diagram of an internal combustion engine preheating device not installed on the oil pan according to an embodiment of the present invention.

[0024] Explanation of key figure labels:

[0025] 1-Oil pan, 2-Preheating mechanism, 3-Inlet connector, 4-Exhaust connector, 5-Preheating pipe, 6-Base, 7-Baffle. Detailed Implementation

[0026] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0027] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0028] Figure 1 is a three-dimensional structural schematic diagram of an internal combustion engine preheating device installed on an oil pan according to an embodiment of the present invention; Figure 2 is a cross-sectional structural schematic diagram of an internal combustion engine preheating device installed on an oil pan according to an embodiment of the present invention; Figure 3 is a three-dimensional structural schematic diagram of an internal combustion engine preheating device not installed on an oil pan according to an embodiment of the present invention.

[0029] As shown in Figures 1 to 3, a preferred embodiment of the present invention provides an internal combustion engine preheating device for preheating the bottom of the oil pan of a large engine. The internal combustion engine preheating device includes: a preheating mechanism 1, an intake connector 2, an exhaust connector 3, and a preheating pipe 4. The preheating mechanism 1 is fixedly connected to the bottom of the oil pan to form a preheating sealed preheating cavity, and one end of the preheating mechanism 1 has a first opening and a second opening; the intake connector 2 is fixed to the first opening and is used to allow high-temperature gas to enter; the exhaust connector 3 is fixed to the second opening and is used to discharge the high-temperature gas; the preheating pipe 4 is disposed inside the preheating mechanism 1, one end of the preheating pipe 4 is detachably fixedly connected to one end of the intake connector 2, and the other end of the preheating pipe 4 is detachably fixedly connected to one end of the exhaust connector 3.

[0030] In one embodiment of the present invention, the internal combustion engine preheating device further includes a gas supply mechanism for supplying the high-temperature gas, and the gas supply mechanism is detachably fixedly connected to the other end of the air intake connector 2.

[0031] In one embodiment of the present invention, the internal combustion engine preheating device further includes: a first sealing mechanism and a second sealing mechanism. The first sealing mechanism is disposed between the intake connector 2 and the preheating mechanism 1; and the second sealing mechanism is disposed between the intake connector 2 and the preheating pipe 4.

[0032] In one embodiment of the present invention, the internal combustion engine preheating device further includes a third sealing mechanism and a fourth sealing mechanism. The third sealing mechanism is disposed between the exhaust connector 3 and the preheating mechanism 1; and the fourth sealing mechanism is disposed between the exhaust connector 3 and the preheating pipe 4.

[0033] In one embodiment of the present invention, the preheating mechanism 1 includes a base 5 and a baffle 6. The base 5 is rectangular and has a hollow structure; one end of the baffle 6 is fixedly connected to one end of the preheating mechanism 1 and extends to the other end of the preheating mechanism 1, and there is a distance between the other end of the baffle 6 and the other end of the preheating mechanism 1.

[0034] In one embodiment of the present invention, the base 5 and the baffle 6 are at the same height.

[0035] In one embodiment of the present invention, a sealing groove is provided on the top of both the base 5 and the baffle 6.

[0036] In one embodiment of the present invention, the internal combustion engine preheating device further includes a fifth sealing mechanism and a sixth sealing mechanism. The fifth sealing mechanism is disposed in the sealing groove of the base 5, and the top of the base 5 is fixedly connected to the bottom of the oil pan; and the sixth sealing mechanism is disposed in the sealing groove of the baffle 6, and the top of the baffle 6 is fixedly connected to the bottom of the oil pan.

[0037] In one embodiment of the present invention, the preheating pipe 4 is U-shaped.

[0038] In one embodiment of the present invention, the preheating mechanism 1 is provided with heat-insulating material.

[0039] In one embodiment of the present invention, the preheating pipe 4 may be provided with multiple bolt holes, each bolt hole is provided with an vent bolt (tightened in), and each vent bolt has a labyrinthine vent hole, so that the high-temperature gas in the preheating pipe 4 can heat the oil pan outside the preheating pipe 4 (inside the preheating chamber), thereby further improving the preheating efficiency; and in order to cooperate with the vent bolt on the preheating pipe 4, the connection between the exhaust connector 3 and the preheating pipe 4 has a gap, so that the high-temperature gas existing in the preheating chamber (outside the preheating pipe 4) can be discharged from the exhaust connector 3; the vent hole on the vent bolt is designed as a labyrinth because this will make the flow path of the high-temperature gas have one or more bends, and the flow direction of the gas will be changed, thereby achieving a throttling effect (ensuring the flow rate in the preheating pipe 4), thereby controlling the high-temperature gas entering the preheating chamber from the preheating pipe 4, and avoiding cavitation, vibration and noise problems in the vent bolt.

[0040] In practical applications, the internal combustion engine preheating device of the present invention connects the intake connector 2, the exhaust connector 3, and the preheating mechanism 1 with bolts and seals with gaskets. The preheating mechanism 1 and the oil pan are also connected with bolts. A sealing ring groove is machined on the preheating mechanism 1, and the sealing ring seals the inner cavity formed by the preheating mechanism 1 and the oil pan. High-temperature gas enters the inner cavity from the intake connector 2. Guided by the baffle, the gas passes through the inner cavity formed by the bottom of the oil pan and the preheating mechanism 1. The high-temperature gas exchanges heat with the oil pan, heating the lubricating oil in the oil pan. After the high-temperature gas exchanges heat with the oil pan, the gas temperature drops and it is discharged from the exhaust connector 3.

[0041] In summary, the internal combustion engine preheating device of the present invention has a simple and reasonable structure. It uses high-temperature gas to heat the oil pan, and the heat from the oil pan is conducted to the lubricating oil and various parts of the engine cylinder block, thereby raising the engine temperature and facilitating starting.

[0042] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. An internal combustion engine preheating device for preheating the bottom of the oil pan of a large engine, characterized in that, The internal combustion engine preheating device includes: a preheating mechanism fixedly connected to the bottom of the oil pan to form a preheating sealed preheating cavity, and one end of the preheating mechanism having a first opening and a second opening; an intake connector fixed to the first opening for allowing high-temperature gas to enter; an exhaust connector fixed to the second opening for discharging the high-temperature gas; and a U-shaped preheating pipe disposed within the preheating mechanism, one end of the preheating pipe being detachably fixedly connected to one end of the intake connector, and the other end of the preheating pipe being detachably fixedly connected to one end of the exhaust connector; wherein, the preheating pipe wall has multiple bolt holes, each bolt hole having an vent bolt, and the vent bolt having a labyrinth-shaped vent hole, allowing the high-temperature gas flowing through the preheating pipe to partially enter the preheating sealed preheating cavity after being throttled by the labyrinth-shaped vent hole, thereby heating the oil pan; wherein, the connection between the exhaust connector and the preheating pipe has a gap.

2. The internal combustion engine preheating device as described in claim 1, characterized in that, It also includes a gas supply mechanism for supplying the high-temperature gas, and the gas supply mechanism is detachably and fixedly connected to the other end of the gas inlet connector.

3. The internal combustion engine preheating device as described in claim 1, characterized in that, Also includes: A first sealing mechanism is disposed between the air inlet connector and the preheating mechanism; and a second sealing mechanism is disposed between the air inlet connector and the preheating pipe.

4. The internal combustion engine preheating device as described in claim 1, characterized in that, Also includes: A third sealing mechanism is disposed between the exhaust connector and the preheating mechanism; and a fourth sealing mechanism is disposed between the exhaust connector and the preheating pipe.

5. The internal combustion engine preheating device as described in claim 1, characterized in that, The preheating mechanism includes: a base, which is rectangular and hollow; and a baffle, one end of which is fixedly connected to one end of the preheating mechanism and extends to the other end of the preheating mechanism, with a distance between the other end of the baffle and the other end of the preheating mechanism.

6. The internal combustion engine preheating device as described in claim 5, characterized in that, The base and the baffle are at the same height.

7. The internal combustion engine preheating device as described in claim 5, characterized in that, Both the base and the baffle have sealing grooves on their tops.

8. The internal combustion engine preheating device as described in claim 7, characterized in that, Also includes: The fifth sealing mechanism is disposed in the sealing groove of the base, and the top of the base is used to be fixedly connected to the bottom of the oil pan. And a sixth sealing mechanism, which is disposed in the sealing groove of the baffle, and the top of the baffle is used to be fixedly connected to the bottom of the oil pan.

9. The internal combustion engine preheating device as described in claim 1, characterized in that, The preheating mechanism is equipped with heat-insulating material.

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