Engine oil temperature control device and engine decomposition method friction work test system
By designing the engine oil temperature control device, the valve and heat exchange components are used to maintain the temperature consistency before and after the oil pump is removed, the problem of inconsistent temperature control of the main oil channel of the engine is solved and the accuracy of friction work measurement is improved.
Patent Information
- Application Number
- CN202323668220.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-29
AI Technical Summary
In the prior art, before and after dismantling the oil pump, the temperature control of the main oil passage of the engine is inconsistent, resulting in an increase in the measurement error of friction work.
An oil temperature control device is designed, including a first total oil section, an oil circuit switching section and a second total oil section. When the oil pump is not removed, the oil temperature is controlled through the first valve and the heat exchange component, and after the oil pump is removed, the oil pump is replaced. The oil pump and heat exchange assembly continue to control the oil temperature to ensure consistency of temperature.
It realizes precise control of engine oil temperature, reduces friction work measurement errors, and improves measurement accuracy.
Smart Images
Figure CN222186587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine testing, in particular to an engine oil temperature control device and an engine decomposition method friction work test system. Background Art
[0002] When the engine is subjected to the decomposition friction work test, the temperature of the engine oil in the main oil channel is precisely controlled, and when the oil pump is removed, the main oil channel of the engine is supplied with oil with adjustable pressure for subsequent friction work tests. Friction work refers to the work done by the components that rub against each other to overcome the friction force when the engine is running.
[0003] In the prior art, the engine oil pan needs to be perforated, and the oil temperature control device takes oil from the oil pan. When the oil pump is not removed, the temperature-controlled oil directly flows back to the oil pan, and the engine relies on the oil pump to circulate the oil, control the oil temperature, and conduct the friction work test. After the oil pump is removed, the temperature-controlled and pressure-controlled oil enters the engine through the main oil channel, and the oil temperature control device provides high-pressure oil for oil circulation, controls the oil temperature, and conducts the friction work test after the oil pump is removed.
[0004] In the current technology, during the test process before removing the oil pump, the temperature-controlled oil directly enters the oil pan, and the oil pump is used to circulate the oil inside the engine.
[0005] Before and after removing the oil pump, the oil circulation pipeline changes greatly, and the position where the temperature-controlled oil enters the engine is inconsistent, which affects the consistency of temperature control and increases the friction work measurement error. Utility Model Content
[0006] The utility model discloses an engine oil temperature control device and an engine decomposition method friction work test system, which are used to ensure that the engine oil temperature is controlled to be consistent before and after the engine oil pump is disassembled.
[0007] In order to achieve the above object, the utility model provides the following technical solutions:
[0008] In a first aspect, an oil temperature control device is provided, which includes: a first main oil section, an oil circuit switching section and a second main oil section connected in sequence, wherein the upstream of the first main oil section is used to communicate with the oil outlet of the engine's oil pump, and the downstream of the second main oil section is used to communicate with the main oil channel of the engine, and a heat exchange component is provided on the second main oil section; wherein the oil circuit switching section includes a first branch and a second branch connected in parallel, a first valve is provided on the first branch, and a second valve and an alternative oil pump are connected in series on the second branch.
[0009] When the oil pump is not removed, the first valve is opened and the second valve is closed. The oil output by the oil pump leaves the engine from the oil cooler, enters the first total oil section after passing through the external filter, and returns to the main oil channel of the engine after being temperature-controlled by the heat exchange component, thereby controlling the oil temperature. Since the oil on the second total oil section can directly enter the main oil channel of the engine after being temperature-controlled by the heat exchange component, it is convenient to accurately control the oil temperature of the main oil channel, thereby improving the accuracy of friction work measurement;
[0010] After removing the oil pump, the first valve is closed and the second valve is opened. The original oil pump is replaced by a pipeline connection tooling, and the replacement oil pump replaces the original oil pump. Oil is sucked from the engine oil pan through the pipeline connection tooling, and after temperature control by the heat exchange component, oil at a specific temperature is provided to the main oil channel of the engine to facilitate the friction work test after removing the oil pump.
[0011] Optionally, the alternative oil pump is a variable frequency oil pump.
[0012] Optionally, the variable frequency oil pump is located downstream of the second valve.
[0013] Optionally, the heat exchange component is used to control the temperature of the engine oil on the second total oil section by means of secondary temperature control.
[0014] Optionally, the heat exchange component includes a circulation pipeline, on which a first heat exchanger, a circulation pump, a second heat exchanger and an electric heater are connected in series; wherein the circulation pump is used to drive the heating medium to circulate in the circulation pipeline, the circulation pipeline exchanges heat with the engine oil of the second main oil section through the first heat exchanger, and exchanges heat with the cooling water pipeline through the second heat exchanger, and the electric heater is used to heat the engine oil in the circulation pipeline.
[0015] Optionally, a bypass branch is connected in parallel to the first heat exchanger, and a three-way valve is provided at the connection between the bypass branch and the circulation pipeline.
[0016] Optionally, the three-way valve is located upstream of the first heat exchanger.
[0017] In a second aspect, an engine decomposition method friction work test system is provided, which includes an engine and an oil temperature control device as described in any of the above technical solutions, the engine includes an oil pump and a main oil channel, the upstream of the first total oil section is connected to the oil outlet end of the oil pump, and the downstream of the second total oil section is connected to the main oil channel.
[0018] The engine decomposition friction work test system has the same advantages as the above-mentioned oil temperature control device over the prior art, which will not be repeated here.
[0019] Optionally, a parallel main passage and a bypass passage are provided between the oil pump and the main oil channel, and an oil cooler and a filter are connected in series on the bypass passage; the engine also includes a thermostat tooling, and the thermostat tooling is used to prevent the oil from entering the heat exchanger when flowing through the oil cooler.
[0020] Optionally, the engine disassembly method friction work test system further includes a pipeline connection tool, and when the oil pump is removed, the pipeline connection tool is used to replace the oil pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A schematic diagram of the structure of the oil temperature control device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] refer to Figure 1 The oil temperature control device provided in the embodiment of the present application includes: a first main oil section 2, an oil circuit switching section and a second main oil section 3 connected in sequence, the upstream of the first main oil section 2 is used to communicate with the oil outlet of the engine oil pump, the downstream of the second main oil section 3 is used to communicate with the main oil channel of the engine, and a heat exchange component 4 is provided on the second main oil section 3; wherein the oil circuit switching section includes a first branch 5 and a second branch 6 connected in parallel, a first valve V1 is provided on the first branch 5, and a second valve V2 and an alternative oil pump 1 are connected in series on the second branch 6.
[0024] When the oil pump is not removed, the first valve V1 is opened and the second valve V2 is closed. The oil output by the oil pump leaves the engine from the oil cooler, enters the first total oil section 2 after passing through the external filter, and returns to the main oil passage of the engine after temperature control by the heat exchange component 4. Specifically, it can be returned from the engine oil cooler to the main oil passage of the engine to control the oil temperature. Since the oil on the second total oil section 3 can directly enter the main oil passage of the engine after temperature control by the heat exchange component 4, it is convenient to accurately control the oil temperature of the main oil passage, thereby improving the accuracy of friction work measurement;
[0025] After the oil pump is removed, the first valve V1 is closed and the second valve V2 is opened. The original oil pump is replaced by a pipeline connection tooling, and the replacement oil pump 1 replaces the original oil pump. Oil is sucked from the engine oil pan through the pipeline connection tooling, and after temperature control by the heat exchange component 4, oil at a specific temperature is provided to the main oil channel of the engine to facilitate the friction work test after the oil pump is removed.
[0026] In a specific embodiment, the oil pump 1 is replaced with a variable frequency oil pump. After the oil pump is removed, the variable frequency oil pump can be used to pressurize the oil to provide oil of a specific pressure to the main oil channel of the engine.
[0027] In a specific embodiment, the variable frequency oil pump is located downstream of the second valve V2. When the second valve V2 is disconnected, the variable frequency oil pump immediately cuts off the oil supply to avoid ineffective oil pumping.
[0028] In a specific embodiment, the heat exchange component 4 is used to control the temperature of the engine oil on the second total oil section 3 by means of secondary temperature control to avoid local overheating of the engine oil.
[0029] There are many ways to achieve secondary temperature control heating of the oil in the second main oil section 3 that is to enter the main oil gallery. In a specific embodiment, the heat exchange assembly 4 includes a circulation pipeline, and the circulation pipeline is connected in series with a first heat exchanger 41, a circulation pump 45, a second heat exchanger 44 and an electric heater 43; wherein the circulation pump 45 is used to drive the heating medium to circulate in the circulation pipeline to control the flow of the heating medium. The circulation pipeline exchanges heat with the oil in the second main oil section 3 through the first heat exchanger 41, and exchanges heat with the cooling water pipeline 45 through the second heat exchanger 44, so as to use the cooling water to cool the heating medium. The cooling water pipeline 45 can be provided with a control valve V3 to control the flow of the cooling water pipeline 45. The electric heater 43 is used to heat the oil in the circulation pipeline, so as to use the cooling water to heat the heating medium. In this way, the oil in the second main oil section 3 that is to enter the main oil gallery is heated by secondary temperature control to avoid local overheating of the oil.
[0030] In a specific embodiment, the first heat exchanger 41 is connected in parallel with a bypass branch 421, and a three-way valve V4 is provided at the connection between the bypass branch 421 and the circulation pipeline. The bypass branch 421 can be used to short-circuit the first heat exchanger 41 in specific circumstances, such as when the first heat exchanger 41 is temporarily overhauled.
[0031] In a specific embodiment, the three-way valve V4 is located upstream of the first heat exchanger 41 , so that once the heating medium is switched to the bypass branch 421 , the three-way valve V4 can prevent the heating medium from entering the first heat exchanger 41 .
[0032] Based on the same concept, the embodiment of the present application also provides an engine decomposition method friction work test system, which includes an engine and an oil temperature control device of any of the above technical solutions, the engine includes an oil pump and a main oil channel, the upstream of the first total oil section 2 is connected to the oil outlet of the oil pump, and the downstream of the second total oil section 3 is connected to the main oil channel. The technical effect of the engine decomposition method friction work test system can refer to the above oil temperature control device.
[0033] Because the oil needs to pass through the oil cooler before entering the main oil gallery, when there is a temperature difference between the engine oil temperature and the coolant temperature, the main oil gallery oil temperature will be affected by the coolant temperature due to the heat exchange of the oil cooler. When the coolant temperature is higher than the oil temperature, the oil will heat up when flowing through the oil cooler, and the main oil gallery oil temperature will be higher than the oil pan oil temperature; when the coolant temperature is lower than the oil temperature, the oil will cool down when flowing through the oil cooler, and the main oil gallery oil temperature will be lower than the oil pan oil temperature. The specific temperature deviation depends on the temperature difference between the oil and the coolant, the heat exchange capacity of the oil cooler, etc. As a result, the main oil gallery oil temperature cannot be accurately controlled, affecting the accuracy of friction work measurement.
[0034] In a specific embodiment, a main passage and a bypass passage are connected in parallel between the oil pump and the main oil channel, and an oil cooler and a filter are connected in series on the bypass passage; the engine also includes a thermostat tooling, which is used to prevent the oil from entering the heat exchanger when flowing through the oil cooler, thereby preventing the oil temperature in the main oil channel from being affected by the coolant temperature, thereby facilitating precise control of the oil temperature in the main oil channel and ensuring the accuracy of friction work measurement.
[0035] In a specific embodiment, the engine disassembly method friction work test system also includes a pipeline connection tool. When the oil pump is removed, the pipeline connection tool is used to replace the above-mentioned oil pump to ensure that the oil flow path before and after the oil pump is removed is more consistent.
[0036] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. An oil temperature control device, characterized in that: include: A first total oil section, an oil circuit switching section, and a second total oil section connected in sequence, wherein the upstream of the first total oil section is used to communicate with the oil outlet of the engine oil pump, and the downstream of the second total oil section is used to communicate with the main oil channel of the engine, and a heat exchange component is provided on the second total oil section; The oil circuit switching section includes a first branch and a second branch connected in parallel, a first valve is arranged on the first branch, and a second valve and an alternative oil pump are connected in series on the second branch.
2. The oil temperature control device according to claim 1, characterized in that: The alternative oil pump is a variable frequency oil pump.
3. The oil temperature control device according to claim 2, characterized in that: The variable frequency oil pump is located downstream of the second valve.
4. The oil temperature control device according to any one of claims 1 to 3, characterized in that: The heat exchange component is used to control the temperature of the engine oil on the second total oil section by means of two-level temperature control.
5. The oil temperature control device according to claim 4, characterized in that: The heat exchange assembly comprises a circulation pipeline, wherein a first heat exchanger, a circulation pump, a second heat exchanger and an electric heater are connected in series on the circulation pipeline; Among them, the circulating pump is used to drive the heating medium to circulate in the circulating pipeline, the circulating pipeline exchanges heat with the oil in the second main oil section through the first heat exchanger, and exchanges heat with the cooling water pipeline through the second heat exchanger, and the electric heater is used to heat the oil in the circulating pipeline.
6. The oil temperature control device according to claim 5, characterized in that: The first heat exchanger is connected in parallel with a bypass branch, and a three-way valve is provided at the connection between the bypass branch and the circulation pipeline.
7. The oil temperature control device according to claim 6, characterized in that: The three-way valve is located upstream of the first heat exchanger.
8. An engine decomposition method friction work test system, characterized in that: It comprises an engine and the oil temperature control device according to any one of claims 1 to 7, wherein the engine comprises an oil pump and a main oil channel, the upstream of the first total oil section is connected to the oil outlet end of the oil pump, and the downstream of the second total oil section is connected to the main oil channel.
9. The engine decomposition method friction work test system according to claim 8, characterized in that: A main passage and a bypass passage connected in parallel are provided between the oil pump and the main oil passage, and an oil cooler and a filter are connected in series to the bypass passage; The engine further comprises a thermostat tooling, wherein the thermostat tooling is used to prevent the engine oil from entering the heat exchanger when flowing through the engine oil cooler.
10. The engine decomposition method friction work test system according to claim 8, characterized in that: The engine disassembly method friction work test system also includes a pipeline connection tool. When the oil pump is removed, the pipeline connection tool is used to replace the oil pump.