Engine water shortage and engine oil shortage forced protection system

Abstract

The utility model provides an engine water shortage and engine oil shortage forced protection system which comprises a monitoring module and a main controller, the monitoring module adopts liquid level sensors, and the liquid level sensors comprise a water liquid level sensor and an oil liquid level sensor which are respectively arranged in a water tank and an oil tank. The water liquid level sensor and the oil liquid level sensor are both electrically connected with the main controller, and the main controller is electrically connected with the engine. The main controller is used for sending an idling operation instruction and an instruction for cutting off a power supply of the engine to the engine according to a monitoring result, and the main controller further comprises an early warning module for comparing the liquid level with a set warning value and a counting module for counting continuous warning times N; idling control can be automatically and reasonably carried out on the engine under the condition of water shortage or oil shortage of the engine, and the engine is prevented from being damaged or scrapped.

Description

Technical Field

[0001] The utility model relates to an engine protection system, in particular to an engine water shortage and oil shortage forced protection system. Background Art

[0002] An engine is a device that provides power for machines such as automobiles, ships, and construction machinery. It is the heart of the machine and determines power performance, economy, stability, and environmental friendliness. The engine consists of five major systems: cooling, lubrication, ignition, fuel supply, and starting systems. Among them, the cooling and lubrication systems play a crucial role in the reliable operation of the engine. That is, the water tank stores coolant, which is sent into the engine when the engine is working to avoid overheating of the engine and protect the engine from damage. The fuel tank is a special container for storing engine oil. When the engine is working, the engine oil will form an oil film on the surfaces of various components in the engine, reducing wear between components, reducing the running resistance between components, slowing down wear, and preventing metal sintering. Therefore, whether it is water shortage or oil shortage, it will damage the engine. In the light case, the engine cylinder block is strained, the crankshaft and bearing shells are burned out, and some components are abnormally worn and make abnormal noises. In the severe case, it will lead to engine scrapping and sudden shutdown, causing major personal safety accidents.

[0003] Therefore, most engines are equipped with an oil pressure sensor, a temperature sensor, and a warning light system. If the oil level is too low, the oil pressure sensor will immediately send a signal to the instrument panel of the machine to light up the corresponding low oil warning light after detecting a pressure drop. When the temperature sensor detects that the engine water temperature is too high, it will light up the corresponding water temperature warning light. However, this solution is prone to false alarms, delayed alarms, or no alarms due to faults such as oil induction plug faults and thermostat faults, making the vehicle owner unable to accurately obtain information about the fuel tank and water tank, unable to make timely treatment, resulting in engine damage. More operators will ignore this alarm in the short term, thus causing unnecessary damage to the engine. Summary of the Utility Model

[0004] Aiming at the defects of the above-mentioned prior art, the purpose of the utility model is to provide an engine water shortage and oil shortage protection system, which can monitor the actual liquid levels of the liquid in the engine water tank and fuel tank in real time, give an alarm in time for water shortage and oil shortage situations, and can automatically control the engine to idle in time, thereby avoiding damage to the engine.

[0005] To achieve the above technical objectives, the present application adopts the following technical solutions: It includes a monitoring module and a main controller. The monitoring module uses a liquid level sensor. The liquid level sensor includes a water liquid level sensor and an oil liquid level sensor respectively arranged at the bottom of the water tank and the oil tank at the lowest liquid level lines of the water tank and the oil tank, and both the water liquid level sensor and the oil liquid level sensor are connected to the main controller, and the main controller is electrically connected to the engine; the main controller is used to send an idling operation instruction to the engine according to the monitoring result obtained by the monitoring module, and the main controller also includes a warning module for comparing the liquid level with a set warning value and a counting module for counting the continuous warning times N.

[0006] Preferably, the warning module is electrically connected to the counting module, and the counting module is electrically connected to the engine, and it is set that when N = 3, the main controller sends an idling operation instruction to the engine.

[0007] Preferably, the main controller further includes a storage module and a clock control module. The liquid level sensor is connected to the storage module, and the storage module is connected to the clock control module and the warning module.

[0008] Preferably, the clock control module sets the warning time interval as T and the sampling duration as t.

[0009] Preferably, the liquid level sensor is connected to the warning module, and the warning module is connected to the engine.

[0010] Preferably, an alarm display screen is further provided, and the alarm display screen is connected to the warning module.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] (1) The monitoring module in the system monitors the liquid levels in the water tank and the oil tank through the water liquid level sensor and the oil liquid level sensor respectively arranged at the lowest liquid level lines of the water tank and the oil tank in the water tank and the oil tank, and transmits the data information to the main controller. The warning module set in the main controller compares and judges the current liquid level to determine whether the monitoring result is lower than the warning value. If it is lower than the warning value, an idling operation instruction is sent to the engine, which can control the engine to automatically idle when lacking water or oil, avoiding the operator ignoring the alarm and causing unnecessary damage to the engine.

[0013] (2) By adopting the method of using a liquid level sensor to detect the liquid level, this system avoids the situations of false alarms, delayed alarms or no alarms that are likely to occur in the prior art when using an oil pressure sensor and a temperature sensor, such as oil induction plug failures and thermostat failures. That is, this system is more reliable, has a lower cost, and a simple structure.

[0014] Further, the main controller includes a counting module and an early warning module. The counting module is electrically connected to the early warning module and the engine. When the counting module counts the continuous warning times N and sets N = 3, the main controller sends an idle operation instruction to the engine to give the operator appropriate processing time. If the system is not processed in time, the engine operation state will be automatically controlled, which can automatically and reasonably control the engine to idle in case of water shortage or oil shortage in the engine, preventing engine damage or scrapping.

[0015] The main controller includes a storage module, a clock module and an early warning module. The storage module is electrically connected to the clock control module and the early warning module, and the early warning module is also electrically connected to an alarm display screen. Then the clock control module sets the early warning time interval as T, which can detect the liquid levels in the water tank and the fuel tank every period of time T and give an alarm in time so that the vehicle owner or driver can find the problem and pull over for maintenance. The sampling duration is set as t to prevent inaccurate measurement due to the shaking of the water tank during the machine movement when the liquid levels of the coolant or engine oil are at the critical values. Therefore, the sampling range is expanded to make the detection result more accurate, the alarm more timely and persuasive. Brief Description of the Drawings

[0016] Figure 1 is the system structure diagram of the present utility model;

[0017] Figure 2 is the structural connection diagram of the present utility model;

[0018] Figure 3 is the flow chart of the system of the present utility model in the operation mode. Detailed Embodiment

[0019] To make the objectives, technical solutions and advantages of this application clearer, the following will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0020] See Figure 1 and Figure 2 , an automatic idle speed control system for protecting an engine from water shortage and oil shortage, including: a monitoring module and a main controller. The monitoring module includes a water level sensor and an oil level sensor respectively arranged at the bottom of the water tank and the fuel tank at the lowest liquid level lines of the water tank and the fuel tank, and both the water level sensor and the oil level sensor are connected to the main controller. The main controller is connected to an alarm display screen and the engine, and the main controller further includes a storage module, an early warning module, a counting module and a clock control module.

[0021] Both the water level sensor and the oil level sensor are connected to the storage module, which is respectively connected to the clock control module and the warning module. It is used to transmit the liquid level data monitored by the water level sensor and the oil level sensor within 5 seconds every 5 minutes to the warning module for judgment, to determine whether the water level and oil level in the water tank and fuel tank are lower than the warning value. The warning module is electrically connected to the engine and the alarm display screen respectively, and the warning module is also connected to the counting module and the engine in sequence. The corresponding water level alarm indicator and oil level alarm indicator are set on the alarm display screen. Then, the main controller can send corresponding operation instructions to the engine according to the judgment result of the warning module and control the corresponding indicator lights to give warnings to the operator.

[0022] And the control system in this application includes two control modes, one is the operation mode and the other is the start mode.

[0023] Reference Figure 3 As shown, when the engine is already in the running state and the control system is in the operation mode, the liquid level sensor inputs the liquid level information in the water tank and fuel tank into the storage module for storage in real time. Through the clock control module, the water level and oil level information within 5 seconds every 5 minutes is sent to the warning module for comparison and judgment with the warning value. If it is not lower than the warning value, the system operates normally. If any liquid level data is lower than the warning value, the corresponding alarm light on the alarm display screen flashes to give an alarm, and the counting module works to count the number of alarms N and judge whether N is equal to 3. If it is not equal to 3, the system continues to operate and waits for 5 minutes before continuing the comparison and counting. When N is equal to 3, that is, when the number of alarms reaches the third time, an idling operation instruction is sent to the engine to control the engine to idle to maintain the safety of the engine.

[0024] The counting module also includes a reset function. When the comparison and judgment result of the warning module is not lower than the warning value, the number of alarms N is cleared and recalculated.

[0025] When the engine is in the starting state and the control system is in the start mode, the liquid level sensor directly sends the liquid level information in the water tank and fuel tank at this time to the warning module for comparison and judgment with the warning value. If it is not lower than the warning value, the engine can start normally. If it is lower than the warning value, the engine start is prohibited, that is, the engine power supply is disconnected and the machine cannot start.

[0026] Working principle of this embodiment: During the normal operation of the engine, the monitoring module inputs the liquid level data monitored by the water level sensor and the oil level sensor into the storage module in the main controller in real time. The clock control module periodically causes the storage module to transmit the liquid level data monitored by the water level sensor and the oil level sensor within t seconds at this time to the warning module for judgment every period of time T, to judge whether the water level and oil level in the water tank and fuel tank are lower than the warning values. If they are not lower than the warning values, the system loops this step to judge the liquid level data every period of time T until when the judgment result is lower than the warning value, the corresponding alarm light on the alarm display screen flashes to give an alarm and at the same time the technical module starts to work to count the number of alarms N. The vehicle owner should make timely handling. If not handled in time, when the system continues to run until the number of alarms N is equal to 3, that is, when the number of alarms reaches the third time, an idle running instruction is sent to the engine to control the engine to run idly and force the operator to stop for maintenance. After confirming safety, the operator shuts down the engine, replenishes the coolant and engine oil into the water tank and fuel tank and then restarts the vehicle. When starting, the system starts to work, and the monitoring module directly inputs the current liquid level data into the warning module in the main controller for comparison and judgment. If it is not lower than the warning value, the engine can be started normally. After the engine starts successfully, the system enters the running mode. However, if it is still lower than the warning value, the engine power supply is disconnected and the engine cannot start and the machine cannot operate.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An engine water shortage and oil shortage forced protection system, characterized in that, It includes a monitoring module and a main controller. The monitoring module uses a liquid level sensor. The liquid level sensor includes a water liquid level sensor and an oil liquid level sensor which are respectively arranged at the bottom of the water tank and the oil tank and are located at the lowest liquid level lines of the water tank and the oil tank. Both the water liquid level sensor and the oil liquid level sensor are connected to the main controller, and the main controller is connected to the engine; The main controller is used to send an idling operation instruction to the engine according to the monitoring result obtained by the monitoring module. The main controller also includes a warning module for comparing the liquid level with a set warning value and a counting module for counting the continuous warning times N.

2. The engine water shortage and oil shortage forced protection system according to claim 1, characterized in that, The warning module is electrically connected to the counting module, and the counting module is electrically connected to the engine. It is set that when N = 3, the main controller sends an idling operation instruction to the engine.

3. The engine water shortage and oil shortage forced protection system according to claim 1, characterized in that, The main controller also includes a storage module and a clock control module. The liquid level sensor is connected to the storage module, and the storage module is connected to the clock control module and the warning module.

4. The engine water shortage and oil shortage forced protection system according to claim 3, characterized in that, The clock control module sets the warning time interval as T and the sampling duration as t.

5. The engine water shortage and oil shortage forced protection system according to claim 1, characterized in that The liquid level sensor is connected to the warning module, and the warning module is connected to the engine.

6. The engine water shortage and oil shortage forced protection system according to claim 1, characterized in that, An alarm display screen is also provided, and the alarm display screen is connected to the warning module.

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