Turbocharger test bench lubricating oil rapid heating system

Abstract

A rapid heating system for lubricating oil on a turbocharger test bench includes an oil tank and a piping system. The oil tank contains a heating element. The piping system includes: an oil outlet pipe, one end of which is connected to an oil outlet on the oil tank, and the other end to the first port of a three-way valve; an oil return pipe, one end of which is connected to an oil return port on the oil tank, and the other end to the second port of the three-way valve; and a pressure relief return pipe, one end of which is connected to a pressure relief return hole on the oil tank, and the other end to the third port of the three-way valve. The turbocharger to be tested is mounted on the return pipe for testing. This invention provides a rapid heating system for lubricating oil on a turbocharger test bench. By adding a pressure relief return pipe to the existing turbocharger lubricating oil supply system, it not only quickly delivers high-temperature lubricating oil to the turbocharger bearing housing but also reduces oil leakage during the heating process.

Description

Technical Field

[0001] This utility model belongs to the field of turbocharger testing technology, specifically relating to a rapid heating system for lubricating oil on a turbocharger test bench. Background Technology

[0002] A turbocharger is a device that uses engine exhaust gases to drive a turbine, thereby increasing the engine's intake air volume and output power. With the development of the automotive industry, turbochargers have played a crucial role in improving engine efficiency, reducing fuel consumption, and decreasing emissions, and are widely used.

[0003] Before leaving the factory, turbochargers typically undergo testing on a test bench. To simulate real-world operating conditions, this test bench utilizes a lubricating oil circulation system, where the lubricating oil requires temperature rise. However, existing turbocharger test benches exhibit very slow lubricating oil temperature rise due to the extremely small shaft clearances of the turbocharger and the high viscosity of the lubricating oil at low temperatures. This results in very slow flow and velocity of the lubricating oil throughout the oil circuit. The slow circulation of the lubricating oil within the pipes carries away heat, which is then radiated into the atmosphere. This not only leads to slow lubricating oil temperature rise supplied to the turbocharger under test by the test bench but also poses a risk of oil leakage due to the continuous high pressure during the lubricating oil heating process.

[0004] Therefore, based on the above situation, this application designs and studies a rapid heating system for lubricating oil on a turbocharger test bench. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a rapid heating system for lubricating oil on a turbocharger test bench. By adding a pressure relief and return pipeline to the existing turbocharger lubricating oil supply system, it can not only quickly deliver high-temperature lubricating oil to the turbocharger bearing housing, but also reduce oil leakage during the lubricating oil heating process.

[0006] The present invention is solved by the following technical solution.

[0007] A rapid heating system for lubricating oil on a turbocharger test bench includes an oil tank and a piping system. The oil tank is equipped with a heating element. The piping system includes: an oil outlet pipe, one end of which is connected to an oil outlet on the oil tank, and the other end of which is connected to the first port of a three-way valve; an oil return pipe, one end of which is connected to an oil return port on the oil tank, and the other end of which is connected to the second port of the three-way valve; and a pressure relief return pipe, one end of which is connected to a pressure relief return hole on the oil tank, and the other end of which is connected to the third port of the three-way valve. The turbocharger to be tested is mounted on the oil return pipe for testing.

[0008] In a preferred embodiment, the oil outlet pipe is equipped with an oil pump, which can be a variable frequency high-pressure oil pump for efficiently delivering lubricating oil.

[0009] In a preferred embodiment, the oil outlet pipe is equipped with a pressure sensor and a temperature sensor to monitor the pressure and temperature of the lubricating oil in the pipe.

[0010] In a preferred embodiment, a flow sensor is provided on the oil outlet pipe to monitor the flow rate of lubricating oil in the pipe.

[0011] In a preferred embodiment, the heating component is a heater for heating lubricating oil located in the oil tank, and may be a heating tube.

[0012] In a preferred embodiment, the oil tank is equipped with a level gauge for observing the lubricating oil capacity in the tank, and also has a filler hole for adding oil.

[0013] Compared with existing technologies, this utility model has the following advantages: It provides a rapid heating system for lubricating oil on a turbocharger test bench, adding a pressure relief return pipe to the existing turbocharger lubricating oil supply system. When the lubricating oil is heated, the three-way valve corresponding to the pressure relief return pipe opens, allowing the lubricating oil to quickly return to the oil tank via the pipe, enabling rapid circulation and heating of the lubricating oil, and quickly circulating the hot oil to the turbocharger's inlet. When the lubricating oil temperature reaches the test temperature, the three-way valve corresponding to the pressure relief return pipe closes, and the lubricating oil can only flow back to the oil tank after passing through the turbocharger bearing housing. This not only quickly delivers high-temperature lubricating oil to the turbocharger bearing housing but also reduces oil leakage during the lubricating oil heating process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the rapid heating system for the lubricating oil on the turbocharger test bench in this utility model. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0018] Currently, turbocharger lubrication systems only have one inlet and return oil path, meaning the lubricating oil must flow through the turbocharger's bearing housing. Because the shaft clearance of a turbocharger is very small, and the lubricating oil has high viscosity at low temperatures, the flow rate and velocity of the lubricating oil throughout the entire oil circuit are very slow. The slow circulation of the lubricating oil in the pipeline carries away heat, which is then radiated into the atmosphere. This not only results in slow heating of the lubricating oil supplied to the turbocharger under test by the test bench, but also poses a risk of oil leakage to the turbocharger under test due to the continuous high pressure during the lubricating oil heating process.

[0019] Therefore, this application designs a novel lubricating oil circulation loop. See also Figure 1 This utility model relates to a rapid heating system for lubricating oil on a turbocharger test bench, comprising an oil tank 1 and a piping system. The oil tank 1 is equipped with a heating component. The piping system includes: an oil outlet pipe 2, one end of which is connected to an oil outlet on the oil tank 1, and the other end of which is connected to the first port of a three-way valve 6; an oil return pipe 4, one end of which is connected to an oil return port on the oil tank 1, and the other end of which is connected to the second port of the three-way valve 6; and a pressure relief return pipe 3, one end of which is connected to a pressure relief return hole on the oil tank 1, and the other end of which is connected to the third port of the three-way valve 6. The turbocharger 5 to be tested is installed on the oil return pipe 5 for testing.

[0020] Furthermore, as can be seen from the accompanying drawings, in the system of this application, the oil outlet pipe 2 is equipped with an oil pump 21, which can be a variable frequency high-pressure oil pump for efficiently transporting lubricating oil. The oil outlet pipe 2 is equipped with a pressure sensor 22 and a temperature sensor 23 for monitoring the pressure and temperature of the lubricating oil in the pipe. The oil outlet pipe 2 is also equipped with a flow sensor 24 for monitoring the flow rate of the lubricating oil in the pipe.

[0021] In this application, the heating component is a heater 11 installed in the oil tank 1 for heating the lubricating oil, and can be a heating tube. The oil tank 1 is equipped with a level gauge 13 for observing the lubricating oil volume in the oil tank 1, and also has a filler hole 12 for adding oil.

[0022] The valves, sensors, level gauges, and control components involved in the system of this application are all conventional devices in the prior art and are commercially available. The core of this application lies in the design of the pressure relief return oil pipe 3.

[0023] As can be seen, this invention employs a three-way valve 6 and adds a pressure relief return oil pipe 3 to the traditional turbocharger oil supply system. Before the turbocharger test, the three-way valve 6 connects the oil outlet pipe 2 of the oil tank 1 to the pressure relief return oil pipe 3. The low-temperature lubricating oil in the pipe quickly returns to the oil tank 1 through the pressure relief return oil pipe 3, and rapidly circulates the high-temperature lubricating oil in the oil tank to the oil inlet of the turbocharger 5. At the start of the test, the three-way valve 6 closes the interface of the pressure relief return oil pipe 3, connecting the oil outlet pipe 2 to the return oil pipe 4. This allows the high-temperature lubricating oil to quickly enter the turbocharger bearing housing, shortening the oil supply time of the turbocharger in a stationary state and reducing the risk of oil leakage in the tested turbocharger.

[0024] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A rapid heating system for lubricating oil on a turbocharger test bench, comprising an oil tank (1) and a piping system, wherein the oil tank (1) is equipped with a heating component, characterized in that, The piping system includes: Oil outlet pipe (2), one end of which is connected to the oil outlet on the oil tank (1), and the other end is connected to the first port of the three-way valve (6); Return oil pipe (4), one end of which is connected to the return oil port on the oil tank (1), and the other end is connected to the second port of the three-way valve (6); Pressure relief return pipe (3), one end of which is connected to the pressure relief return hole on the oil tank (1), and the other end is connected to the third port of the three-way valve (6); The turbocharger (5) to be tested is installed on the return oil pipe (4) for testing.

2. The rapid heating system for lubricating oil on a turbocharger test bench according to claim 1, characterized in that, The oil outlet pipe (2) is equipped with an oil pump (21), which can be a variable frequency high-pressure oil pump.

3. The rapid heating system for lubricating oil on a turbocharger test bench according to claim 2, characterized in that, The oil outlet pipe (2) is equipped with a pressure sensor (22) and a temperature sensor (23).

4. The rapid heating system for lubricating oil on a turbocharger test bench according to claim 3, characterized in that, A flow sensor (24) is installed on the oil outlet pipe (2).

5. The rapid heating system for lubricating oil on a turbocharger test bench according to claim 1, characterized in that, The heating component is a heater (11) installed in the oil tank (1) for heating the lubricating oil.

6. The rapid heating system for lubricating oil on a turbocharger test bench according to any one of claims 1 to 5, characterized in that, The oil tank (1) is equipped with a level gauge (13) and an oil filling hole (12).

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