CN220285861U - Vehicle liquid level alarm protection system and fuel vehicle - Google Patents
Vehicle liquid level alarm protection system and fuel vehicle Download PDFInfo
- Publication number
- CN220285861U CN220285861U CN202321930355.1U CN202321930355U CN220285861U CN 220285861 U CN220285861 U CN 220285861U CN 202321930355 U CN202321930355 U CN 202321930355U CN 220285861 U CN220285861 U CN 220285861U
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- vehicle
- liquid level
- sensor
- engine
- protection system
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- 239000007788 liquid Substances 0.000 title claims abstract description 55
- 239000000446 fuel Substances 0.000 title claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 4
- 239000000295 fuel oil Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a vehicle liquid level alarm protection system and a fuel vehicle, comprising: the instrument is used for judging and displaying alarm information; the sensor comprises a liquid level sensor for detecting the liquid level in the expansion water tank and a water temperature sensor for detecting the water temperature of the engine; the engine control unit is used for controlling the power of the whole vehicle; the liquid level sensor is connected with the instrument and the whole vehicle grounding wire respectively by adopting a sensor signal wire, and the water temperature sensor is connected with the engine control unit. According to the vehicle liquid level alarm protection system, an engine protection mechanism is added, and the damage risk of an engine caused by too low liquid level of cooling liquid is reduced; meanwhile, the functional logic is perfected, and the situation of false alarm of the instrument caused by fluctuation of the cooling liquid and the alarm function failure caused by open circuit of a signal line of the liquid level sensor in the running process of the vehicle are avoided.
Description
Technical Field
The utility model relates to a vehicle liquid level alarm protection system and a fuel vehicle, and belongs to the technical field of automobiles.
Background
The engine coolant is mainly used for cooling the engine, so that the engine can work in an optimal temperature range, and the engine can be protected from normal and good operation. At present, the fuel oil vehicle is basically provided with a cooling liquid level too low alarm function, and a driver perceives through an instrument alarm indication when the cooling liquid level is too low, but some problems still exist: firstly, lack of a corresponding protection mechanism of the engine, if a driver fails to timely sense an alarm indication of the instrument, the engine is possibly damaged, and the safe operation of the motor vehicle is affected; secondly, fluctuation of the cooling liquid in the running process of the vehicle can influence judgment of the liquid level sensor, and an instrument false alarm condition occurs; thirdly, when the signal line of the liquid level sensor is in an open circuit condition, the alarm system has failure risk.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model provides a vehicle liquid level alarm protection system and a fuel oil vehicle.
In order to achieve the above object, the present utility model provides a vehicle liquid level alarm protection system, comprising:
the instrument is used for judging and displaying alarm information;
the sensor comprises a liquid level sensor for detecting the liquid level in the expansion water tank and a water temperature sensor for detecting the water temperature of the engine;
the engine control unit is used for controlling the power of the whole vehicle;
the liquid level sensor is connected with the instrument and the whole vehicle grounding wire respectively by adopting a sensor signal wire, and the water temperature sensor is connected with the engine control unit.
As one of the embodiments, the liquid level sensor adopts a reed pipe type liquid level sensor, and the liquid level sensor is arranged at the bottom of the expansion tank.
As one of the embodiments, the water temperature sensor is arranged on a thermostat behind the engine cylinder head.
As one embodiment, when the vehicle is in high water temperature due to leakage of cooling liquid, the instrument alarms and the engine control unit controls the engine to perform graded torsion limiting protection output.
As one of the embodiments, the instrument has a liquid level alarm indication function, which is set to be suspended and effective.
Finally, the utility model also provides a fuel oil vehicle, wherein the fuel oil vehicle is provided with the vehicle liquid level alarm protection system.
Compared with the prior art, the vehicle liquid level alarm protection system has the following beneficial effects:
1. the engine protection mechanism is increased, and the risk of damage to the engine caused by too low liquid level of the cooling liquid is reduced.
2. The functional logic is perfected, and the situation of false alarm of the instrument caused by fluctuation of the cooling liquid and the alarm function failure caused by open circuit of the signal line of the liquid level sensor in the running process of the vehicle are avoided.
Drawings
FIG. 1 is a schematic diagram of the principle structure of the present utility model;
FIG. 2 is a schematic view of the expansion tank of the present utility model;
FIG. 3 is a flow chart of the operation of the instrument level alarm of the present utility model;
FIG. 4 is a flow chart illustrating the operation of the engine protection mechanism of the present utility model;
in the figure: 1. the liquid level sensor comprises a liquid level sensor 2, a sensor signal line I, a sensor signal line 3, a sensor signal line II, a sensor signal line 4 and an expansion tank.
Detailed Description
The present utility model will be described in further detail below in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model.
As shown in fig. 1 and 2, a vehicle liquid level alarm protection system comprises an instrument for judging and displaying alarm indication information, a liquid level sensor 1 for sensing the liquid level of an expansion tank 4, a water temperature sensor for sensing the water temperature of an engine and an engine control unit for controlling the power of the whole vehicle;
the liquid level sensor 1 is a reed pipe type liquid level sensor, the model can be 25010, the liquid level sensor 1 is arranged at the bottom of the expansion tank 4, the liquid level sensor 1 is connected to an instrument and a whole vehicle grounding wire respectively by a sensor signal wire I2 and a sensor signal wire II 3, the model of the sensor signal wire adopted can be FLRY-B, and the water temperature sensor is connected with the engine control unit.
Referring to fig. 3, when the liquid level sensor 1 detects that the liquid level of the cooling liquid in the expansion tank 4 is lower than the preset low liquid level threshold value, and the first signal line 2 of the meter receiving sensor continuously feeds back that the same signal duration is longer than the preset alarm maintaining time threshold value of the meter, the meter judges that the event of the too low liquid level in the expansion tank 4 is true, and the alarm indicating lamp of the too low liquid level is on.
Specifically, the instrument adopted by the utility model is a common instrument with a liquid level alarm indication function, such as an IC2.0 instrument, and the liquid level alarm indication function is set to be suspended and effective, namely, when the time of continuously inputting a suspended signal to the instrument by a sensor signal line I2 is longer than the preset alarm maintenance time threshold of the instrument, the liquid level alarm indication lamp is on;
when the liquid level sensor 1 detects that the liquid level of the cooling liquid in the expansion water tank 4 is higher than a preset low liquid level threshold value, the first sensor signal line 2 and the second sensor signal line 3 are controlled by the internal circuit of the sensor to be communicated, the first sensor signal line 2 is changed into a low level, a low level signal is fed back to the instrument, and the instrument does not alarm; when the liquid level sensor 1 detects that the liquid level of the cooling liquid in the expansion water tank 4 is lower than a preset low liquid level threshold value, the first sensor signal line 2 and the second sensor signal line 3 are disconnected under the control of a sensor internal circuit, the first sensor signal line 2 becomes suspended, a suspended signal is fed back to the instrument, and if the duration of the signal is longer than a preset alarm maintaining time threshold value (such as 30 s) of the instrument, the instrument alarms;
when the first sensor signal line 2 or the second sensor signal line 3 is subjected to interference abrasion or other conditions to cause open circuit faults, the first sensor signal line 2 feeds back a suspension signal to the instrument, and if the duration of the signal is longer than a preset alarm maintaining time threshold (such as 30 s) of the instrument, the instrument alarms.
As a specific embodiment, the water temperature sensor is arranged on the thermostat behind the cylinder head of the engine, the water temperature sensor is used for detecting the water temperature of the engine and transmitting the water temperature to the engine control unit, when the water temperature is too high due to leakage of cooling liquid of the vehicle, as shown in fig. 4, the instrument alarms, and meanwhile, the engine control unit controls the engine to perform graded torque limiting protection output according to the high temperature condition: if the current detection temperature is less than or equal to a preset threshold value I (105 ℃), outputting infinitely; if the preset threshold value I (105 ℃) is smaller than the current detection temperature which is smaller than or equal to the preset threshold value II (106 ℃), the engine executes torque limiting 90% output; if the preset threshold value II (106 ℃) is smaller than the current detection temperature and smaller than the preset threshold value III (108 ℃), the engine executes torque limiting 76% output; if the preset threshold value is three (108 ℃) < the current detection temperature, the engine executes torque limiting 50% output.
Finally, the utility model also provides a fuel oil vehicle, wherein the fuel oil vehicle is provided with the vehicle liquid level alarm protection system.
According to the vehicle liquid level alarm protection system, an engine protection mechanism is added, and the damage risk of an engine caused by too low liquid level of cooling liquid is reduced; meanwhile, the functional logic is perfected, and the situation of false alarm of the instrument caused by fluctuation of the cooling liquid and the alarm function failure caused by open circuit of a signal line of the liquid level sensor in the running process of the vehicle are avoided.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. A vehicle level alarm protection system, comprising:
the instrument is used for judging and displaying alarm information;
the sensor comprises a liquid level sensor (1) for detecting the liquid level in the expansion water tank (4) and a water temperature sensor for detecting the water temperature of the engine;
the engine control unit is used for controlling the power of the whole vehicle;
the liquid level sensor (1) is connected with the instrument and the whole vehicle grounding wire respectively by adopting a sensor signal wire, and the water temperature sensor is connected with the engine control unit.
2. A vehicle level warning protection system according to claim 1, characterized in that the level sensor (1) is a reed pipe level sensor, the level sensor (1) being arranged at the bottom of the expansion tank (4).
3. A vehicle level warning protection system according to claim 1, characterized in that the water temperature sensor is arranged on a thermostat behind the engine cylinder head.
4. A vehicle level warning protection system according to claim 3, wherein the meter warns and the engine control unit controls the engine to perform a step torque limiting protection output when the vehicle is too high in water temperature due to leakage of coolant.
5. The vehicle level warning protection system of claim 1, wherein the meter has a level warning indication function, the level warning indication function being configured to be active in the air.
6. A fuel vehicle having the vehicle level warning protection system according to any one of claims 1 to 5 mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321930355.1U CN220285861U (en) | 2023-07-21 | 2023-07-21 | Vehicle liquid level alarm protection system and fuel vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321930355.1U CN220285861U (en) | 2023-07-21 | 2023-07-21 | Vehicle liquid level alarm protection system and fuel vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220285861U true CN220285861U (en) | 2024-01-02 |
Family
ID=89334606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321930355.1U Active CN220285861U (en) | 2023-07-21 | 2023-07-21 | Vehicle liquid level alarm protection system and fuel vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220285861U (en) |
-
2023
- 2023-07-21 CN CN202321930355.1U patent/CN220285861U/en active Active
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