JPH0669305U - Heating equipment for testing internal combustion engine lubricants - Google Patents

Abstract

(57) [Summary] [Purpose] To perform a heat resistance test by heating the lubricating oil of an internal combustion engine while maintaining it at a desired temperature stably. [Structure] A connection port of a filter which is detachably provided in a connection port of an internal combustion engine body is removed, and a double tubular cylinder is interposed between the connection port of the internal combustion engine body and the connection port of the filter. Install an electric heater around the outer circumference of the cylinder to heat the lubricating oil that passes through the outer passage and the inner passage of the cylinder to maintain the temperature at the desired temperature for testing in a stable manner. You can

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heating device for testing the temperature-dependent durability of lubricating oil of an internal combustion engine.

[0002]

[Prior art]

 When testing the durability of a lubricating oil used in an internal combustion engine against temperature, the conventional method for raising the temperature of the lubricating oil is to increase the temperature of the cooling fluid in the case of a liquid-cooled internal combustion engine. ing. In such a prior art, the temperature of the cooling liquid cannot be raised to 100 ° C. or higher due to the heat resistance problem of the internal combustion engine, and therefore the temperature of the lubricating oil cannot be raised so much. In addition, the temperature of the cooling fluid fluctuates depending on the season, and it is difficult to keep the lubricating oil temperature stable at the desired value.

In another prior art, an electric heater for heating the lubricating oil is installed in an oil pan of an internal combustion engine to heat the lubricating oil. Although such a prior art can be applied to a very small internal combustion engine such as for an automobile, in a large internal combustion engine such as an internal combustion engine for cogeneration, the lubricating oil is uniformly heated to a desired temperature. It is difficult to heat and is not actually done.

[0004]

[Problems to be solved by the device]

 An object of the present invention is to provide a heating device for a lubricating oil test of an internal combustion engine, which can perform a heat resistance test while keeping the lubricating oil of the internal combustion engine stable at a desired temperature.

[0005]

[Means for Solving the Problems]

 The present invention relates to a heating device for testing lubricating oil of an internal combustion engine, which is detachably attached to a connection port of the internal combustion engine body, and to which a connection port of a filter for filtering and circulating lubricating oil in the internal combustion engine body is connected. One end is connected to the connection opening of the internal combustion engine body, the other end is connected to the connection opening of the filter, and the inner cylinder and the outer cylinder are formed into a double tubular shape forming an inner passage and an outer passage. And the outer passage to guide the lubricating oil from the internal combustion engine body to the filter, and through the other to guide the lubricating oil from the filter to the internal combustion engine body. A heating device for testing a lubricating oil of an internal combustion engine, comprising: an electric heater provided.

Further, according to the present invention, a male screw is engraved on the connection port of the internal combustion engine body and the other end of the inner cylinder of the cylindrical body, and the connection port of the filter and the one end of the inner cylinder of the cylindrical body are provided. It is characterized in that a female screw is engraved on the part and screwed together.

[0007]

[Action]

 According to the present invention, a filter for filtering and circulating lubricating oil is detachably provided at the connection port of the internal combustion engine body, and the filter is removed and a filter is inserted between the internal combustion engine body and the filter. The body is interposed, and this cylinder is composed of an inner cylinder and an outer cylinder in a double-tube shape. It is formed between the inner passage formed by the inner cylinder and the outer peripheral surface of the inner cylinder and the inner peripheral surface of the outer cylinder. The lubricating oil is introduced from the body of the internal combustion engine to the filter in one of the external passages, and the clean lubricating oil filtered by the filter is introduced into the body of the internal combustion engine in the other of the external passages. An electric heater is provided at a portion, that is, the outer peripheral portion of the outer cylinder, to heat the lubricating oil passing through the outer passage and further the inner passage. In this way, the lubricating oil used in internal combustion engines can be stably heated to the desired temperature and tested for heat-dependent durability.

Further, according to the present invention, a screw is engraved at an end of the internal combustion engine body to which the connection port and the filter of the inner cylinder forming the tubular body are connected, and the connection port of the filter and the internal combustion engine are connected. The present invention can be easily implemented in relation to the existing internal combustion engine by engraving a female screw on the end of the inner cylinder to be connected to the connection port of the main body and screwing them together. Like

[0009]

【Example】

 FIG. 1 is a simplified perspective view showing the overall construction of an embodiment of the present invention. For example, a test heating device 3 according to the present invention is interposed between a large internal combustion engine body 1 such as a cogeneration internal combustion engine and a filter 2 for filtering the lubricating oil, whereby a lubricating oil is desired. It can be heated to a temperature to stabilize it and to test the lubricating oil's heat-dependent durability.

FIG. 2 is an electric circuit diagram in the vicinity of the test heating device 3. The test heating device 3 basically includes a tubular body 4 and an electric heater 5 provided so as to surround the outer peripheral portion of the tubular body 4.

FIG. 3 is a cross-sectional view of the test heating device 3. The inner cylinder 6 and the outer cylinder 7 are coaxially arranged in the cylindrical body 4 to form a double-tube shape. The inner cylinder 6 forms an inner passage 8, and the outer peripheral surface of the inner cylinder 6 and the inner peripheral surface of the outer cylinder 7 are formed. The outer passage 9 is formed by and. A male screw is engraved on the connection port 10 of the internal combustion engine body 1, and a female screw is engraved on the connection port 12 of the inner cylinder 6 at the one end portion 11 of the cylinder body 4 thereof. It is fixed by screwing on and off. Further, at the other end 13 of the tubular body 4, the inner cylinder 6 projects in the axial direction more than the outer cylinder 7, and a male screw is engraved at this connection port 14, and a female screw of the connection port 15 of the filter 2 is provided here. Screw together. An end plate 16 is fixed to the inner cylinder 6 and the outer cylinder 7 at the one end 11 of the cylindrical body 4.

FIG. 4 is a right side view of the test heating device 3 shown in FIG. A communication hole 17 for communicating with the outer passage 9 is formed in the end plate 16. In this way, the lubricating oil from the internal combustion engine 1 is guided to the outer passage 9 through the communication hole 17.

An end plate 18 is also provided at the other end 13 of the cylindrical body 4 and is fixed to the inner cylinder 6 and the outer cylinder 7. A communication hole 19 communicating with the outer passage 9 is formed in the end plate 18, and the lubricating oil in the outer passage 9 is guided to the filter 2. The lubricating oil filtered and cleaned by the filter 2 is guided to the internal combustion engine main body 1 through the inner passage 8 and returns, and thus the lubricating oil is circulated. The inner cylinder 6, the outer cylinder 7 and the end plates 16 and 18 are made of, for example, stainless steel. The end plates 16 and 18 are provided with O-rings 20 and 21 for achieving airtightness between the mounting surface of the internal combustion engine body 1 and the mounting surface of the filter 2. The O-ring 20 is attached to the end plate 16, and the O-ring 21 is attached to the filter 2. Therefore, when the test heating device 3 is not used, the filter 2 can be directly attached to the internal combustion engine body 1. That is, when it is not necessary to test the durability of the lubricating oil, the test heating device 3 according to the present invention may be removed, and the connection port 15 of the filter 2 may be screwed into the connection port 10 of the internal combustion engine body 1.

An electric heater 22 is provided around the outer peripheral portion of the cylindrical body 4, and thus the outer cylinder 7. A temperature detecting element 23 for detecting the temperature of the heater 22 is also provided.

Referring again to FIG. 2, switches 24 and 25 are connected in series to the electric heater 22 and a power supply 26 in series. The power supply 26 may be, for example, a commercial AC power supply of 100V, and the power consumption of the electric heater 22 may be, for example, 1200W. A signal representing the detected temperature of the electric heater 22 detected by the temperature detecting element 23 is given from the line 28 to the electric heater control circuit 27. When the detected temperature of the electric heater 22 reaches an abnormally high temperature, for example, 300 ° C., the control circuit 27 shuts off the switch 24 to ensure safety.

The oil pan provided below the crank chamber of the internal combustion engine body 1 is provided with another temperature detecting element 29 to detect the temperature of the lubricating oil stored in the oil pan. The lubricating oil temperature control circuit 30 controls conduction / interruption of the switch 25 so that the temperature of the lubricating oil detected by the temperature detecting element 29 becomes a desired temperature for the test, for example, 110 ° C. In this way, the temperature of the lubricating oil can be kept constant at the desired predetermined temperature.

As another embodiment of the present invention, the lubricating oil to be filtered from the internal combustion engine body 1 is introduced into the inner passage 8 and the lubricating oil cleaned by the filter 2 is introduced into the outer passage 9 and returned. Good.

[0018]

[Effect of device]

 As described above, according to the present invention, when the filter connection port is detachably connected to the connection port of the internal combustion engine body, the filter is removed from the internal combustion engine body and the connection port of the internal combustion engine body and the filter are connected. Lubricating oil from the main body of the internal combustion engine is guided to the filter through either the inner passage or the outer passage of the cylinder with a cylinder interposed between the mouth and the filter to remove dust, filter and clean the lubrication. The oil is guided to the internal combustion engine body through either the inner cylinder or the outer cylinder of the cylindrical body and circulates, and an electric heater is provided so as to surround the outer peripheral portion of the cylindrical body. Since the lubricating oil passing through the inner passage can be heated, the lubricating oil can be heated to a desired temperature, for example, 110 ° C, and maintained stable, thus providing durability that depends on the heat of the lubricating oil. Sex testing Becomes possible, so the temperature of the lubricating oil even in large internal combustion engine can be maintained in the desired temperature as described above.

[Brief description of drawings]

FIG. 1 is a perspective view showing a simplified overall configuration of an embodiment of the present invention.

FIG. 2 is an electric circuit diagram showing a configuration related to an electric heater 22 of the test heating device 3.

FIG. 3 is a cross-sectional view of a test heating device 3.

FIG. 4 is a right side view of the test heating device 3 shown in FIG.

[Explanation of symbols]

 1 Internal Combustion Engine Main Body 2 Filter 3 Test Heating Device 4 Cylindrical Body 6 Inner Cylinder 7 Outer Cylinder 8 Inner Passage 9 Outer Passage 10 Connection Port of Internal Combustion Engine Body 1 11 One End 13 Other End 15 Connection Port of Filter 23, 29 Temperature detection element 27 Electric heater control circuit 30 Lubricating oil temperature control circuit

Claims (2)

[Scope of utility model registration request] 1. A heating device for testing a lubricating oil of an internal combustion engine, wherein a connection port of a filter for filtering and circulating lubricating oil in the internal combustion engine body is detachably connected to the connecting port of the internal combustion engine body, wherein: One end is connected to the connection port of the engine body, the other end is connected to the connection port of the filter, and the inner tube and the outer tube are formed into a double tubular shape forming an inner passage and an outer passage. A cylindrical body for guiding the lubricating oil from the internal combustion engine body to the filter through one of the outer passages, and a lubricating oil for guiding the lubricating oil from the filter to the internal combustion engine body through the other passage, and is provided so as to surround the outer peripheral portion of the cylindrical body. A heating device for testing lubricating oil of an internal combustion engine, comprising: an electric heater. 2. A male screw is engraved on the connection port of the internal combustion engine body and the other end of the inner cylinder of the cylindrical body, and the male screw is fitted on the connection port of the filter and the one end of the inner cylinder of the cylindrical body. The screw is engraved and screwed together.
A heating device for testing the lubricating oil of an internal combustion engine as described.