CN115335590B - Oil mass detection device and vehicle - Google Patents
Oil mass detection device and vehicle Download PDFInfo
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- CN115335590B CN115335590B CN202180022625.6A CN202180022625A CN115335590B CN 115335590 B CN115335590 B CN 115335590B CN 202180022625 A CN202180022625 A CN 202180022625A CN 115335590 B CN115335590 B CN 115335590B
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- 238000000105 evaporative light scattering detection Methods 0.000 title description 3
- 238000001514 detection method Methods 0.000 claims abstract description 91
- 239000003921 oil Substances 0.000 claims description 325
- 230000005856 abnormality Effects 0.000 claims description 42
- 238000002485 combustion reaction Methods 0.000 claims description 25
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 description 21
- 238000000034 method Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
- F01M11/12—Indicating devices; Other safety devices concerning lubricant level
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The oil amount detection device is provided with: an oil level change determination unit that determines whether or not the oil level change amount is within a first range; an operation state determination unit that determines whether or not a parameter related to an operation state of the vehicle is within a second range; and an oil amount detection unit that detects an oil amount when the oil level change amount is within a first range and the parameter related to the operation state is within a second range.
Description
Technical Field
The present disclosure relates to an oil amount detection device and a vehicle.
Background
Conventionally, a vehicle is provided with an oil reservoir that stores lubricating oil to be supplied to an internal combustion engine mounted on the vehicle. In the oil reservoir, if the amount of lubricating oil (hereinafter referred to as "oil amount") is insufficient, there is a possibility that insufficient lubrication will occur in the internal combustion engine. Therefore, an oil level position detecting portion is provided in the oil reservoir, and the amount of oil in the oil reservoir is detected by detecting the position of the surface of the lubricating oil in the oil reservoir (hereinafter referred to as "oil level").
Further, patent document 1 discloses a structure for estimating the position of the oil surface in the crank chamber from the rotational speed of the internal combustion engine. In this configuration, a map is prepared in advance in which the amount of change in the rotational speed of the internal combustion engine is associated with the position of the oil surface, and the position of the oil surface is estimated by referring to the map.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2005-69079.
Disclosure of Invention
Problems to be solved by the invention
However, the fluctuation of the oil level in the oil reservoir increases according to the running state of the vehicle such as abrupt acceleration or emergency braking of the vehicle and the state of the running road on which the vehicle runs. Therefore, if the oil amount is to be detected based on the detection result of the oil level position detection unit, the oil amount in the oil reservoir may not be accurately detected.
In the structure described in patent document 1, since the position of the oil surface based on the map prepared in advance is used, there is a possibility that the position of the oil surface may deviate from the actual oil surface in the oil reservoir.
The purpose of the present disclosure is to provide an oil amount detection device and a vehicle that can accurately detect the amount of oil in an oil reservoir.
Means for solving the problems
The oil amount detection device according to the present disclosure detects an amount of oil in an oil storage unit mounted on a vehicle, and includes:
an oil level change determination unit that determines whether or not an oil level change amount of the oil reservoir unit is within a first range;
an operation state determination unit that determines whether or not a parameter related to an operation state of the vehicle is within a second range; and
and an oil amount detection unit configured to detect the oil amount when the oil level change amount is within the first range and the parameter related to the operation state is within the second range.
The vehicle according to the present disclosure includes:
an internal combustion engine;
an oil reservoir for storing lubricating oil to be supplied to the internal combustion engine; and
the oil quantity detecting device.
Effects of the invention
According to the present disclosure, the amount of oil in the oil reservoir can be accurately detected.
Drawings
Fig. 1 is a block diagram showing a configuration of a vehicle to which an oil amount detection device according to an embodiment of the present disclosure is applied;
fig. 2 is a graph showing the detection result of the oil amount with respect to time;
fig. 3 is a flowchart showing an example of the operation of the oil amount detection control in the oil amount detection device.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described in detail based on the drawings. Fig. 1 is a block diagram showing a configuration of a vehicle 1 to which an oil amount detection device 100 according to an embodiment of the present disclosure is applied.
As shown in fig. 1, a vehicle 1 is a commercial vehicle such as a truck or a bus, for example, and includes an internal combustion engine 2, an oil reservoir 3, an oil level position detecting unit 4, an operation state detecting unit 5, a warning unit 6, and an oil amount detecting device 100. The internal combustion engine 2 is, for example, a diesel engine, and includes an oil reservoir 3 and an oil level position detection unit 4.
The oil reservoir 3 is an oil pan for storing lubricating oil to be supplied to the internal combustion engine 2, and is provided at the bottom of the internal combustion engine 2. The lubricating oil stored in the oil reservoir 3 is supplied to each portion of the internal combustion engine 2, and then returned to the oil reservoir 3.
The oil level position detecting unit 4 is a known sensor for detecting the position of the oil level in the oil reservoir 3.
The operation state detection unit 5 is, for example, a known acceleration sensor that detects acceleration of the vehicle 1.
The warning unit 6 is, for example, a multimeter or the like mounted on the vehicle 1, and when the oil amount in the oil reservoir 3 is abnormal (excessive or insufficient), a lamp is turned on to warn the driver of the vehicle 1 of the abnormal oil amount.
The oil amount detection device 100 includes a CPU (Central Processing Unit ), a ROM (Read Only Memory), a RAM (Random Access Memory random access Memory), and an input/output circuit, which are not shown. The oil amount detection device 100 is configured to detect the amount of oil in the oil reservoir 3 based on a program set in advance.
The oil amount detection device 100 includes an oil level change determination unit 110, an operation state determination unit 120, a filter processing unit 130, an oil amount detection unit 140, an abnormality determination unit 150, and a warning execution unit 160.
The oil level change determination unit 110 sequentially acquires the detection results of the oil level position detection unit 4, and determines whether or not the oil level change amount of the oil reservoir unit 3 is within the first range. The level change is the difference between the first level position and the second level position. The first oil level position is the latest oil level position acquired from the oil level position detection unit 4.
The second oil level position is stored in a storage unit (not shown) or the like, and is detected by the oil level position detecting unit 4 before the latest oil level position (first oil level position) is acquired. Specifically, the second oil level position is an oil level position at which the oil level change determination unit 110 determines that the oil level change amount is within the first range before the latest oil level position (first oil level position) is acquired.
The first range is a range in which the amplitude of the vibration of the oil surface in the oil reservoir 3 is small, and the oil surface position detector 4 can detect the amplitude of the oil surface change amount of the oil surface with high accuracy, and can be set appropriately. The first range is, for example, a range in which the absolute values of the upper limit value (positive-side value) and the lower limit value (negative-side value) are equal.
When it is determined that the oil level change amount exceeds the first range, the oil level change determination unit 110 cannot accurately detect the oil level in the oil reservoir 3, and therefore, it is assumed that the oil level does not change, and the second oil level position is maintained at the original value. When it is determined that the oil level change amount is within the first range, the oil level change determination unit 110 can accurately detect the oil level in the oil reservoir 3, and thus, it is assumed that the oil level is changed, and the second oil level position is updated to the first oil level position.
The operation state detection unit 5 sequentially acquires a parameter (acceleration of the vehicle 1) related to the operation state of the vehicle 1, and the operation state determination unit 120 determines whether the parameter is within the second range.
The second range is a range of acceleration in which the vibration amplitude of the oil surface in the oil reservoir 3 is small, and is a range that can be appropriately set. The second range is, for example, a range in which the absolute values of the upper limit value (positive-side value) and the lower limit value (negative-side value) are equal.
The filter processing unit 130 performs filter processing on the detection value of the oil level position detection unit 4. Specifically, the filter processing unit 130 sequentially acquires the detection values of the oil level position detection unit 4, and performs, for example, a 1-time delay system filter process (low-pass filter process) on the acquired detection values.
The filter processing unit 130 calculates a filter processed value by performing a filter process on the latest output value (first oil level position) in the oil level position detecting unit 4, for example, based on a past processed value obtained by performing a filter process on the past output value in the oil level position detecting unit 4. The filtering process of the 1 st order delay system can be performed by a known method.
The oil amount detection unit 140 detects the oil amount of the reservoir unit 3 when the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range. Specifically, the oil amount detection unit 140 detects the oil amount of the oil reservoir unit 3 based on the time during which the state in which the oil level change amount is in the first range and the acceleration of the vehicle 1 is in the second range continues.
More specifically, the oil amount detection unit 140 detects the oil amount of the oil reservoir 3 when the state where the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range continues for the first predetermined time or longer. The first predetermined time is a time at which the oil surface of the oil reservoir 3 can be recognized as being in a stable state, and can be appropriately set.
When detecting the oil amount, the oil amount detection unit 140 sets the filter processing value obtained by performing the filter processing on the latest output value of the oil level position detection unit 4 as the oil amount.
In addition, the oil amount detection unit 140 does not detect the oil amount of the reservoir unit 3 when the state in which the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range does not last for the first predetermined time. The oil amount detection unit 140 resets the duration of the state in which the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range.
The abnormality determination unit 150 determines whether or not the oil amount in the oil reservoir unit 3 is abnormal based on the duration of the state in which the oil amount detected by the oil amount detection unit 140 is outside the third range.
The third range is, for example, a range in which the upper limit value is set to a value smaller than the lowest value at which the lubricating oil is likely to leak from the oil reservoir 3, and the lower limit value is set to a value larger than the maximum value in a state in which the lubricating oil is insufficient from the oil reservoir 3.
Specifically, the abnormality determination unit 150 starts abnormality determination of the oil amount when the oil amount at the first oil level position is outside the third range.
The abnormality determination unit 150 determines that the oil amount is excessive when the state in which the oil amount is greater than the upper limit value of the third range continues for the second predetermined time or longer. The abnormality determination unit 150 determines that the oil amount is insufficient when the state in which the oil amount is smaller than the lower limit value of the third range continues for the second predetermined time or longer. The second predetermined time is, for example, a time period for which the abnormal state of the oil amount in the oil reservoir 3 can be allowed to continue, and the like can be arbitrarily set. The second prescribed time corresponds to the "prescribed time" of the present disclosure.
The abnormality determination unit 150 determines that the oil amount is not abnormal when the state in which the oil amount is outside the third range does not continue for the second predetermined time. Then, the determination time for the abnormality determination of the oil amount is reset.
For example, as shown in fig. 2, the oil amount is set to be initially out of the third range at time t 1. The abnormality determination unit 150 starts abnormality determination of the oil amount. Specifically, the abnormality determination unit 150 monitors whether or not the oil amount detected by the oil amount detection unit 140 is out of the third range every time the oil amount is acquired.
At time t2, for example, when the acquired oil amount is within the third range, the abnormality determination unit 150 determines that the oil amount is not abnormal, and resets the determination time of the abnormality determination. Thereafter, the abnormality determination unit 150 again acquires the oil amount detected by the oil amount detection unit 140.
Then, at time t3, when the acquired oil amount falls outside the third range again, the abnormality determination unit 150 starts abnormality determination of the oil amount again. When the determination time from the start of the abnormality determination continues for the second predetermined time (refer to time t 4), the abnormality determination unit 150 determines that the oil amount is abnormal.
The abnormality determination unit 150 may exclude the oil amount detected by the oil amount detection unit 140 from the determination target according to the road on which the vehicle 1 is traveling. The information on the road on which the vehicle 1 travels is acquired by, for example, map information stored in a storage unit (not shown), information acquired from an external GPS (Global Positioning System ) or the like, and the like.
For example, in the case where the traveling road of the vehicle 1 is a road with many curves, a road with a high level difference, or a road with a steep slope, the oil level of the oil reservoir 3 is likely to vibrate, and therefore, even if the oil amount is detected by the oil amount detection unit 140, the accuracy of abnormality determination may be lacking.
Therefore, in such a case, by excluding the oil amount from the determination target, erroneous determination by the abnormality determination unit 150 can be reduced.
When the abnormality determination unit 150 determines that the oil amount in the oil reservoir 3 is abnormal, the warning execution unit 160 executes warning processing. The warning process is, for example, a process of outputting a warning execution instruction to the warning unit 6.
For example, in the example shown in fig. 2, after the abnormality determination by the abnormality determination unit 150 is performed at time t4, the warning execution unit 160 executes a warning process to warn the driver of the abnormality in the fuel amount by the warning unit 6.
Next, an operation example of the oil amount detection control in the oil amount detection device 100 will be described. Fig. 3 is a flowchart showing an example of the operation of the oil amount detection control in the oil amount detection device 100. The processing in fig. 3 is appropriately executed when the vehicle 1 starts to operate, for example.
As shown in fig. 3, the oil amount detection device 100 acquires a first oil level position (step S101). The oil amount detection device 100 calculates a filter processing value of the acquired first oil level position (step S102).
Next, the oil amount detection device 100 determines whether or not the oil level change amount, which is the difference between the first oil level position and the second oil level position, is within the first range (step S103). The first oil level position related to the oil level change amount is the first oil level position acquired in step S101. The second oil level position is stored in the storage unit or the like at the time of step S103.
As a result of the determination, when the oil level change amount is not within the first range (no in step S103), the oil amount detection device 100 maintains the value at step S103 without updating the second oil level position (step S104). After step S104, the process advances to step S107.
On the other hand, when the oil level change amount is within the first range (yes in step S103), the oil amount detection device 100 updates the second oil level position to the first oil level position (step S105).
Next, the oil amount detection device 100 determines whether the acceleration is within the second range (step S106). If the acceleration is not within the second range as a result of the determination (no at step S106), the oil amount detection device 100 resets the duration of the state in which the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range (step S107). After step S107, the process returns to step S101.
On the other hand, when the acceleration is within the second range (yes in step S106), the oil amount detection device 100 determines whether or not the duration of the state in which the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range is equal to or longer than the first predetermined time (step S108).
If the duration is less than the first predetermined time as a result of the determination (no in step S108), the process returns to step S101. On the other hand, when the duration is equal to or longer than the first predetermined time (yes in step S108), the oil amount detection device 100 determines whether or not the filter processing value is out of the third range (step S109). The filter processing value is obtained by performing a filter processing on the first oil surface position, and is calculated in step S102.
If the filter processing value is not outside the third range as a result of the determination (no in step S109), the determination time as to whether or not the oil amount is abnormal is reset (step S110).
On the other hand, when the filter processing value is outside the third range (yes in step S109), the oil amount detection device 100 determines whether or not the determination time as to whether or not the oil amount is abnormal is equal to or longer than the second predetermined time (step S111).
If the determination time is not equal to or longer than the second predetermined time as a result of the determination (no in step S111), the process returns to step S101. On the other hand, when the determination time is equal to or longer than the second predetermined time (yes in step S111), the oil amount detection device 100 executes the warning process (step S112).
After step S110 or step S112, the present control ends. After the present control is completed, when the vehicle 1 is operating, the process starts again from step S101.
According to the present embodiment configured as described above, since the oil amount in the case where the oil level change amount is within the first range and the acceleration is within the second range is detected, the oil amount in the oil reservoir 3 can be accurately detected.
Further, since the filter process is performed on the output value of the oil level position detection unit 4 and the filter process value is set as the oil amount, the oil amount can be detected with the noise component or the like removed.
Further, since the oil amount is detected when the state in which the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range continues for the first predetermined time, the oil amount can be detected by the oil reservoir 3 being in a relatively stable state. As a result, an accurate oil amount can be detected.
Further, since the abnormality is determined to be the oil amount when the detected oil amount is out of the third range for the second predetermined time, the abnormality is not immediately determined when the oil amount is out of the third range suddenly. As a result, it is possible to suppress the presence or absence of abnormality in the erroneously determined oil amount.
Further, since the warning process is executed when the oil amount abnormality is determined, the abnormality of the oil amount can be promptly transmitted to the driver.
In the above embodiment, acceleration is exemplified as a parameter related to the operation state of the vehicle 1, but the present disclosure is not limited to this. For example, the parameter related to the operation state of the vehicle 1 may be the speed of the vehicle 1.
The speed of the vehicle 1 is obtained from, for example, a known speed sensor (operation state detection unit) or the like that detects the speed of the vehicle 1. The second range corresponds to the speed of the vehicle 1.
For example, when the speed of the vehicle 1 is substantially constant, the change in acceleration is substantially small, and the running state of the vehicle 1 is stable, so that the oil surface of the oil reservoir 3 is also relatively stable. Therefore, by detecting the oil amount in the oil amount detection device 100 in such a state, an accurate oil amount can be detected.
The parameter related to the operation state of the vehicle 1 may be the rotation speed of the internal combustion engine 2. The rotation speed of the internal combustion engine 2 is obtained from, for example, a known sensor (operation state detection unit) or the like that detects the rotation speed of the internal combustion engine 2. The second range corresponds to the rotation speed of the internal combustion engine 2.
For example, when the vehicle 1 is a commercial vehicle such as a bridge vehicle, the vehicle 1 is in a stopped state while the operation of the internal combustion engine 2 is maintained. When the vehicle 1 is in the idle state, the vehicle 1 is in the stopped state while the operation of the internal combustion engine 2 is maintained.
In such a case, when the rotation speed of the internal combustion engine 2 is small, the oil surface of the oil reservoir 3 is also in a relatively stable state because the vibration generated by the rotation of the internal combustion engine 2 is small. Therefore, by detecting the oil amount in the oil amount detection device 100 in such a state, an accurate oil amount can be detected.
The parameter related to the operation state of the vehicle 1 may be a parameter related to the running state of the vehicle 1. Examples of the parameter related to the running state of the vehicle 1 include a turning state of the vehicle 1. The turning state of the vehicle 1 is obtained from a known steering angle sensor (operation state detecting unit) or the like, for example. The second range corresponds to a parameter related to the running state of the vehicle 1.
For example, when the vehicle 1 travels in a state with less cornering as in a relatively straight running state, the oil surface of the oil reservoir 3 is also in a relatively stable state. Therefore, by detecting the oil amount in the oil amount detection device 100 in such a state, an accurate oil amount can be detected.
In addition, when the vehicle 1 runs on a road such as a repeated turn, the oil level of the oil reservoir 3 also vibrates along with the turn of the vehicle 1, and therefore, when the oil level is detected in such a state, there is a possibility that the oil amount cannot be accurately detected. Therefore, in such a case, the detection of the oil amount is not performed, and thus the detection accuracy of the oil amount can be improved.
The operation state of the vehicle 1 may be determined by combining 2 or more of the above-described parameters related to the speed of the vehicle 1, the rotation speed of the internal combustion engine 2, and the parameters related to the running state of the vehicle 1. In this way, the detection accuracy of the oil amount detection device 100 can be further improved.
In the above embodiment, the filter processing unit 130 is provided, but the present disclosure is not limited to this, and the filter processing unit may not be provided.
In the above-described embodiment, the oil amount of the oil reservoir 3 is detected when the state in which the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range continues for the first predetermined time or longer, but the present disclosure is not limited thereto. For example, the oil amount of the oil reservoir may be detected every time the oil level position detection unit and the operation state detection unit detect that the oil level change amount is within the first range and the acceleration of the vehicle 1 is within the second range.
In the above embodiment, the criterion of the determination time in the abnormality determination of the oil amount is set to the second predetermined time, but the second predetermined time may be fixed or may be adjusted according to the situation. For example, in a situation where the speed state of the vehicle 1 does not change, or in a situation where the state of the internal combustion engine 2 at the time of stopping the vehicle 1 is constant, it is considered that the abnormality determination may be performed at a short timing, and therefore in such a situation, the second predetermined time may be set to be short.
In addition, in a situation where the vehicle 1 is traveling on a road with many curves and the operation state of the vehicle 1 is unstable, the frequency of detecting the oil amount is reduced, and therefore it is considered that a long abnormality determination time is required. Therefore, in such a situation, the second predetermined time can be set long.
In the above embodiment, the abnormality determination unit is provided, but the present disclosure is not limited to this, and the abnormality determination unit may not be provided. In this case, the oil amount detection device may be configured to be capable of notifying the user of the amount of oil so that the user can recognize the amount of oil detected by the oil amount detection device. Specifically, instead of the warning executing unit, a notifying unit that notifies the user of the amount of oil may be provided.
In the above-described embodiment, the oil level change determination unit, the operation state determination unit, the filter processing unit, the oil amount detection unit, the abnormality determination unit, and the warning execution unit are incorporated in the oil amount detection device, but the present disclosure is not limited thereto. For example, an oil level change determination unit, an operation state determination unit, a filter processing unit, an oil amount detection unit, an abnormality determination unit, and a warning execution unit may be provided.
In the above-described embodiment, the oil amount detection device is mounted on the vehicle, but the present disclosure is not limited to this, and for example, the oil amount detection device may be provided outside the vehicle. In this case, the oil amount detection device and the vehicle may be configured to be communicable.
In the above embodiment, the vehicle 1 is a commercial vehicle, but the present disclosure is not limited to this, and may be a vehicle other than a commercial vehicle, for example, a passenger vehicle.
In addition, the above embodiments are merely examples of embodiments in carrying out the present disclosure, and the technical scope of the present disclosure should not be limited to these embodiments. That is, the present disclosure can be embodied in various forms within a range not departing from the gist or main characteristics thereof.
The present application is based on japanese patent application (japanese patent application 2020-052693) filed 24 months 3 in 2020, the contents of which are incorporated herein by reference in their entirety.
Industrial applicability
The oil amount detection device of the present disclosure is useful as an oil amount detection device capable of accurately detecting an amount of oil in an oil reservoir, and a vehicle.
Symbol description
1. Vehicle with a vehicle body having a vehicle body support
2. Internal combustion engine
3. Oil storage part
4. Oil level position detecting unit
5. Operation state detecting unit
6. Warning part
100. Oil mass detection device
110. Oil level change determination unit
120. Operation state determination unit
130. Filtering processing unit
140. Oil amount detection unit
150. Abnormality determination unit
160. Warning execution unit
Claims (10)
1. An oil amount detection device for detecting an amount of oil in an oil storage unit mounted on a vehicle, comprising:
an oil level change determination unit that determines whether or not an oil level change amount of the oil reservoir unit is within a first range;
an operation state determination unit that determines whether or not a parameter related to an operation state of the vehicle is within a second range; and
an oil amount detection unit configured to detect the oil amount when the oil level change amount is within the first range and the parameter related to the operation state is within the second range,
the oil level change amount is a difference between a first oil level position, which is a latest oil level position, and a second oil level position, which is an oil level position when the oil level change amount is determined to be within the first range by the oil level change determination unit before the latest oil level position is acquired.
2. The oil amount detection device according to claim 1, comprising:
a filter processing unit that performs filter processing on an output value of an oil level detection unit that detects an oil level of the oil reservoir unit,
the oil amount detection unit detects the oil amount based on a filter processing value obtained by performing the filter processing on the latest output value in the oil level detection unit when the oil amount is detected.
3. The oil amount detecting device according to claim 2, wherein,
the filtering processing unit calculates the filtering processing value based on a past processing value obtained by performing the filtering processing on a past output value of the oil surface detection unit.
4. The oil amount detection device according to claim 1, comprising:
and an abnormality determination unit that determines whether or not the oil amount in the oil reservoir is abnormal based on a duration of time during which the oil amount detected by the oil amount detection unit is out of a third range.
5. The oil amount detecting device according to claim 4, wherein,
the abnormality determination unit determines that the oil amount is excessive when the state in which the oil amount is greater than the upper limit value of the third range continues for a predetermined time or longer, and determines that the oil amount is insufficient when the state in which the oil amount is less than the lower limit value of the third range continues for the predetermined time or longer.
6. The oil amount detection device according to claim 4, comprising:
and a warning execution unit that executes warning processing when the abnormality determination unit determines that the oil amount in the oil reservoir unit is abnormal.
7. The oil amount detecting device according to claim 4, wherein,
the abnormality determination unit excludes the oil amount detected by the oil amount detection unit from the determination target according to the road on which the vehicle is traveling.
8. The oil amount detecting device according to claim 1, wherein,
the oil amount detection unit detects the oil amount based on a time during which the oil level change amount is within the first range and a state in which the parameter related to the operation state is within the second range continues.
9. The oil amount detecting device according to claim 1, wherein,
the parameter related to the operation state of the vehicle includes at least one of a parameter related to a speed of the vehicle, a rotational speed of an internal combustion engine mounted on the vehicle, and a parameter related to a running state.
10. A vehicle is provided with:
an internal combustion engine;
an oil reservoir for storing lubricating oil to be supplied to the internal combustion engine; and
the oil amount detection device of claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020052693A JP7276220B2 (en) | 2020-03-24 | 2020-03-24 | Oil level detection device and vehicle |
| JP2020-052693 | 2020-03-24 | ||
| PCT/JP2021/011142 WO2021193365A1 (en) | 2020-03-24 | 2021-03-18 | Oil quantity detection device and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115335590A CN115335590A (en) | 2022-11-11 |
| CN115335590B true CN115335590B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180022625.6A Active CN115335590B (en) | 2020-03-24 | 2021-03-18 | Oil mass detection device and vehicle |
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| Country | Link |
|---|---|
| JP (1) | JP7276220B2 (en) |
| CN (1) | CN115335590B (en) |
| WO (1) | WO2021193365A1 (en) |
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|---|---|---|---|---|
| CN114211952B (en) * | 2021-12-29 | 2023-06-23 | 无锡坦程物联网股份有限公司 | Oil mass data monitoring method and system |
| CN114439575B (en) * | 2022-03-11 | 2023-04-28 | 中国第一汽车股份有限公司 | Method for monitoring engine oil quantity of automobile engine and automobile |
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| JP6885203B2 (en) | 2017-06-05 | 2021-06-09 | いすゞ自動車株式会社 | Warning controller |
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| JP2021152344A (en) | 2021-09-30 |
| CN115335590A (en) | 2022-11-11 |
| WO2021193365A1 (en) | 2021-09-30 |
| JP7276220B2 (en) | 2023-05-18 |
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