System for adjusting engine power based on oil mass monitoring
By designing a fuel level monitoring system on the loader engine, the engine output power is automatically adjusted, solving the problems of high fuel consumption and shutdown risks caused by insufficient manual adjustment, and achieving fuel-saving and safe power regulation.
Patent Information
- Application Number
- CN202520579723.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The output power adjustment of the loader engine relies on manual operation, which can lead to forgetting to adjust it, resulting in high fuel consumption and poor economy under heavy loads, and there is also the risk of the engine running out of fuel and stopping.
Design an engine power system based on fuel level monitoring, including a fuel tank, engine, multi-state switch, function selection switch, fuel level monitoring unit, and control circuit. The fuel level monitoring unit generates an alarm signal and automatically adjusts the engine's output power to prevent the engine from stopping due to fuel shortage.
This technology enables the engine to automatically adjust its output power based on the fuel level, reducing fuel consumption, improving operating time and economy, and lowering the risk of engine stalling.
Smart Images
Figure CN223724714U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of engine power regulation, and particularly relates to an engine power system based on oil quantity monitoring and regulation. BACKGROUND
[0002] The three working states of the loader engine, light load, medium load and heavy load, are realized by the rotation of the multi-state switch. At present, the output power adjustment of the loader engine can only be manually adjusted, and there is a situation that the machine operator forgets to adjust, resulting in the loader being in the heavy load state all the time. In the heavy load state, the oil consumption is high and the economy is poor. When the oil level is insufficient, if the engine is still in the heavy load state, it is easy to cause engine shutdown hidden trouble. Therefore, it is particularly important to adjust the output power of the engine to the fuel-saving mode in time according to the oil quantity. SUMMARY
[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an engine power system based on oil quantity monitoring and regulation, which solves the problem of engine oil shortage shutdown risk caused by human forgetfulness in adjusting the engine output power.
[0004] The utility model adopts the scheme of:
[0005] An engine power system based on oil quantity monitoring and regulation, comprising: an oil tank, an engine, a multi-state switch, a function selection switch, an oil quantity monitoring unit and a control circuit.
[0006] The multi-state switch is connected to the engine input port through a wire; the function selection switch is connected to the engine and the control circuit through a wire and comprises two power regulation modes, namely manual mode and automatic mode; the oil quantity monitoring unit is installed in the oil tank and is connected to the ground; the control circuit comprises a resistance network, a first switch circuit, a second switch circuit and a third switch circuit, the resistance network is connected to the engine input end, the first switch circuit is connected to the engine, the second switch circuit is connected to the oil quantity monitoring unit, and the third switch circuit is connected to the function selection switch.
[0007] Further, the first switch circuit adopts a normally closed relay; the second switch circuit and the third switch circuit adopt normally open relays, which are a first normally open relay and a second normally open relay respectively.
[0008] Further, the output end of the normally closed relay is connected to the engine input end, and the control end is connected to the output end of the second normally open relay.
[0009] Further, the output end of the first normally open relay is connected to the resistance network, and the control end is connected to the output end of the second normally open relay; the output end of the second normally open relay controls the relevance of the normally closed relay and the control end of the first normally open relay to the ground, and the control end is controlled by the function selection switch.
[0010] Further, the multi-state switch selects different output power states of the engine, including light load, medium load and heavy load, and transmits signals to the engine.
[0011] Further, the resistance network comprises resistance R1, resistance R2, resistance R3 and resistance R4.
[0012] The resistance R1, the resistance R2 and the resistance R3 are connected in series, and correspond to resistance signals of light load, medium load and heavy load states of the multi-state switch in the manual mode and the automatic mode respectively; the resistance R4 is connected in series with the second switch circuit, and corresponds to a resistance signal of the light load state in the automatic mode.
[0013] Further, the resistance value of the resistance R4 is the sum of the resistance R1, the resistance R2 and the resistance R3.
[0014] Further, the oil quantity monitoring unit comprises a fuel sensor installed on an oil tank.
[0015] Further, the function selection switch is a double-pole double-throw switch.
[0016] In the manual mode, one end of the function selection switch is connected to one input port of the engine; in the automatic mode, the other end of the function selection switch is connected to the other input port of the engine.
[0017] Further, the control circuit is adapted to engine models meeting the national third and above emission standards.
[0018] The above-mentioned utility model has the following beneficial effects:
[0019] The power selection of the engine is changed from manual selection to automatic and manual dual modes by the function selection switch arranged in the circuit.
[0020] The oil quantity monitoring unit can be connected to the ground after the early warning signal is sent, so that the normally closed relay and the first normally open relay are powered on, the normally closed relay is closed to disconnect the multi-state switch circuit, the first normally open relay is closed to connect the resistance R4 to the engine circuit, the resistance signal in the light load state is input, the engine is automatically switched to the light load state, the fuel consumption is reduced, and the working time is increased.
[0021] The advantages of the additional aspects of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0022] The drawings constituting a part of the present application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.
[0023] Figure 1 is the improved engine power regulation circuit diagram in the embodiment of the present application;
[0024] Figure 2 is the engine power regulation circuit diagram before improvement in the embodiment of the present application. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be pointed out that the following detailed description is exemplary and aims to provide further description of the present application. Unless otherwise specified, all the technical and scientific terms used herein have the same meaning as that generally understood by the ordinary skilled in the technical field to which the present application belongs.
[0026] It should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application.
[0027] The three working states of the loader engine, light load, medium load and heavy load, are generally realized by rotating the multi-state switch, and the fuel consumption of the three states is different. As shown in Figure 2 Before improvement, the power adjustment mode of the engine ECU is only manual, when the machine operator adjusts to the heavy load state, as the fuel is consumed, there is a risk of engine stall due to lack of fuel. Therefore, when the fuel level reaches the warning value, the engine ECU should automatically enter the light load fuel saving mode in time.
[0028] As shown in Figure 1 The present embodiment provides an oil quantity monitoring based engine power regulation system, after improvement, the system comprises an oil tank, an engine, a multi-state switch, a function selection switch, an oil quantity monitoring unit and a control circuit.
[0029] Specifically, the multi-state switch is connected to the engine input port through a wire; the function selection switch is connected to the engine and the control circuit through a wire, and includes two power regulation modes, namely manual mode and automatic mode; the oil quantity monitoring unit is installed in the oil tank, generates an oil level alarm signal and is connected to the ground; the control circuit includes a resistance network, a first switch circuit, a second switch circuit and a third switch circuit, the resistance network is connected to the engine input, the first switch circuit is connected to the engine, the second switch circuit is connected to the oil quantity monitoring unit, and the third switch circuit is connected to the function selection switch.
[0030] Specifically, the first switch circuit adopts a normally closed relay; the second switch circuit and the third switch circuit adopt normally open relays, which are respectively a first normally open relay and a second normally open relay. The output end of the normally closed relay is connected to the input end of the engine, and the control end is connected to the output end of the second normally open relay; the output end of the first normally open relay is connected to the resistance network, and the control end is connected to the output end of the second normally open relay; the output end of the second normally open relay controls the relevance of the normally closed relay and the control end of the first normally open relay to the ground, and the control end is controlled by the function selection switch.
[0031] Specifically, the function selection switch is a double-pole double-throw switch. The original manual mode is changed to automatic and manual modes, and the machine hand can dial the function selection switch according to the actual working condition. In manual mode, one end of the function selection switch is connected to one input port of the engine; in automatic mode, the other end of the function selection switch is connected to the other input port of the engine.
[0032] In this embodiment, the multi-state switch selects different output power states of the engine, including light load, medium load, and heavy load, and transmits signals to the engine. In manual mode, the output power state of the engine is controlled by the position state of the multi-state switch; in automatic mode, the output power state of the engine is controlled by the position state of the multi-state switch and the fuel quantity, and when the fuel level reaches the low level warning value, the engine automatically enters the light load state.
[0033] Specifically, the resistance network includes resistors R1, R2, and R3. Resistors R1, R2, and R3 are connected in series, and in manual mode and automatic mode (not reaching the low level warning value), they correspond to light load, medium load, and heavy load state resistance signals of the multi-state switch, respectively.
[0034] When the multi-state switch is dialed to the light load position, resistor R1 is connected to the circuit, and the ECU receives the light load resistance signal, controls the engine to enter the light load state, reduces the fuel supply, and reduces the output power;
[0035] When the multi-state switch is dialed to the medium load position, resistor R2 is connected to the circuit, and the ECU receives the medium load resistance signal, controls the engine to enter the medium load state, appropriately increases the fuel supply, and increases the output power;
[0036] When the multi-state switch is dialed to the heavy load position, resistor R3 is connected to the circuit, and the ECU receives the heavy load resistance signal, controls the engine to enter the heavy load state, further increases the fuel supply, and increases the output power.
[0037] In this embodiment, the resistance network also includes resistor R4, and the resistance value of resistor R4 is the sum of resistors R1, R2, and R3. Resistor R4 is connected in series with the first normally open relay, and in automatic mode (reaching the low level warning value), it corresponds to the light load state resistance signal.
[0038] Specifically, the oil quantity monitoring unit includes a fuel sensor installed on the fuel tank. In this embodiment, the fuel sensor is a Shengshuo sensor with model number 104203201.
[0039] In this embodiment, the cooperative control logic of the first switch circuit (normally closed relay) and the third switch circuit (second normally open relay) is as follows: when the function selection switch is switched to the automatic mode, the control end of the second normally open relay is closed to keep the transmission path of the multi-state switch signal, so that the system triggers the subsequent action according to the fuel quantity. The control end of the first switch circuit (normally closed relay) is directly triggered by the oil quantity warning signal. When the fuel level reaches the warning value, the control end of the normally closed relay is powered on, and the output end thereof is disconnected, thereby cutting off the multi-state switch circuit and making the engine out of the control logic of the resistors R1, R2 and R3 in the resistor network.
[0040] The cooperative control logic of the first switch circuit (normally closed relay) and the second switch circuit (first normally open relay) is as follows: when the fuel level reaches the warning value, the control end of the normally closed relay is powered on, and the output end thereof is disconnected, thereby cutting off the multi-state switch circuit. The control end of the second switch circuit (first normally open relay) is also triggered by the oil quantity warning signal. When the fuel level reaches the warning value, the second switch circuit is closed (R4 resistor is connected).
[0041] The cooperative control logic of the second switch circuit (first normally open relay) and the third switch circuit (second normally open relay) is as follows: the third switch circuit (second normally open relay) is controlled by the function selection switch. When the automatic mode is selected, the third switch circuit is closed to form the main control loop. The control end of the second switch circuit (first normally open relay) is triggered by the oil quantity warning signal, but it can only take effect in the automatic mode (the second normally open relay is closed). That is, the closure of the third switch circuit is a prerequisite for the action of the second switch circuit.
[0042] The control end of the normally closed relay is connected with the oil quantity monitoring unit, and the control end of the first normally open relay is connected with the fuel quantity monitoring unit. After the warning signal is triggered, the fuel sensor reaches the alarm resistor and is connected with the ground, the control end of the normally closed relay is powered on and disconnects the multi-state switch circuit, so that the ECU ignores the multi-state switch signal, the control end of the first normally open relay is powered on and closed, and the resistor R4 is connected to the ECU, thereby forcing the engine to enter the light load power state.
[0043] The control circuit is suitable for engine models that meet the national standard III and above emission standards.
[0044] In this embodiment, the working mode of the engine power adjustment system based on the oil quantity monitoring is as follows:
[0045] The machine hand can dial the power selection switch according to the actual working condition. When the manual switch is selected, the engine still ensures the constant engine output power according to the position state of the multi-state switch; when the automatic gear is selected, the second normally open relay control end is closed, before reaching the pre-set early warning oil threshold, the engine output power is still determined according to the position of the multi-state switch, when reaching the early warning oil threshold, the temperature sensor reaches the alarm resistance and ground, the normally closed relay control end is powered off, the multi-state switch loop is invalid, at this time the first normally open relay control end is closed, the resistance R4 is connected into the loop, the input resistance of the ECU is input, the resistance R4 is the sum of the resistance R1, the resistance R2 and the resistance R3, which is the input resistance in the light load state, at this time the engine enters the light load state, the fuel consumption is reduced, and the working time is increased.
[0046] Although the specific embodiments of the utility model have been described above with reference to the drawings, it is not a limitation on the protection scope of the utility model, and those skilled in the art should understand that various modifications or deformations made by those skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.
Claims
1. An oil quantity based monitoring regulated engine power system, characterized by, The utility model relates to a kind of engine power control system, including: Oil tank, engine, multi-state switch, function selection switch, oil quantity monitoring unit and control circuit; The multi-state switch is connected to engine input port by wire; The function selection switch is connected with engine and control circuit by wire, including two power regulation modes of manual mode and automatic mode;The oil quantity monitoring unit is installed in oil tank, generates oil level alarm signal and is connected with ground;The control circuit includes resistance network, first switch circuit, second switch circuit, third switch circuit, the resistance network connects engine input end, the first switch circuit is connected with engine, the second switch circuit is connected with oil quantity monitoring unit, and the third switch circuit is connected with function selection switch.
2. An oil quantity based monitoring regulated engine power system as claimed in claim 1, wherein, The first switch circuit uses normally closed relay;The second switch circuit and third switch circuit use normally open relay, and are first normally open relay and second normally open relay respectively.
3. An oil level based monitoring regulated engine power system as claimed in claim 2, wherein, The normally closed relay output end is connected to engine input end, and control end is connected with the second normally open relay output end.
4. An oil level based monitoring regulated engine power system as claimed in claim 2 wherein, The first normally open relay output end is connected to resistance network, and control end is connected with the second normally open relay output end;The second normally open relay output end controls the relevance of normally closed relay and the first normally open relay control end with ground, and control end is controlled by function selection switch.
5. An oil quantity based monitoring regulated engine power system as claimed in claim 1, wherein, The multi-state switch selects different output power states of engine, including light load, medium load and heavy load, and transmits signal to engine.
6. An oil level based monitoring regulated engine power system as claimed in claim 5, wherein, The resistance network includes: resistance R1, resistance R2, resistance R3 and resistance R4; The resistance R1, resistance R2 and resistance R3 are connected in series, and in manual mode and automatic mode, they correspond to light load, medium load and heavy load state resistance signals of multi-state switch respectively;The resistance R4 is connected in series with second switch circuit, and in automatic mode, it corresponds to light load state resistance signal.
7. An oil level based monitoring regulated engine power system as claimed in claim 6 wherein, The resistance value of resistance R4 is the sum of resistance R1, resistance R2 and resistance R3.
8. An oil quantity based monitoring regulated engine power system as claimed in claim 1, wherein, The oil quantity monitoring unit includes fuel sensor, and is installed in oil tank.
9. An oil quantity based monitoring regulated engine power system as claimed in claim 1, wherein, The function selection switch is double-pole double-throw switch; In manual mode, one end of function selection switch is connected to one input port of engine;In automatic mode, the other end of function selection switch is connected to another input port of engine.
10. An oil quantity based monitoring regulated engine power system as claimed in claim 1, wherein, The control circuit is suitable for engine model of national three and above emission standards.