Starting and flameout control circuit of vehicle
By designing a vehicle's start and fire-off control circuit, and using the cooperation of relays and solenoid valves, the problem that the loader vehicle cannot effectively control the engine oil circuit when starting or fire-off is solved, achieving more efficient and safe operation.
Patent Information
- Application Number
- CN202420664781.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The existing loader vehicles cannot effectively control the oil inlet and oil disconnection in the engine oil circuit during startup or shutdown, resulting in reduced operational convenience and increased operational complexity and safety hazards.
A vehicle start-up and fire-off control circuit is designed. Through the cooperation of the second normally open relay, the normally closed relay and the start-off solenoid valve, the pull-off solenoid valve is realized, and the power-on state is monitored through the alarm instrument.
The suction and maintenance control of the fire-out solenoid valve is realized, which improves the convenience and accuracy of engine oil circuit control, reduces operating complexity and safety hazards, and improves working efficiency and operation safety.
Smart Images
Figure CN222756537U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of starting control of a loader vehicle, in particular to a starting and shut-off control circuit of a vehicle. Background Art
[0002] Under the current circumstances, existing loader vehicles cannot effectively control the oil supply and oil cut-off of the engine oil circuit during the start-up or shutdown process. This leads to reduced convenience during operation and may also bring potential safety hazards when the equipment fails. Specifically, since the oil supply and oil cut-off of the engine oil circuit cannot be accurately controlled, the operator needs to spend more time and energy to adjust the oil circuit when starting or shutting down. This not only increases the complexity of operation and reduces work efficiency, but also may cause fatigue to the operator, thereby affecting their work quality and safety.
[0003] In addition, when a loader vehicle fails, the inability to effectively control the engine oil circuit in a timely manner may cause equipment damage or safety accidents. This poses a potential danger to both the operator and the surrounding environment. Therefore, improving the existing loader vehicle design and improving the convenience and accuracy of engine oil circuit control are of great significance for improving work efficiency and ensuring operational safety. Utility Model Content
[0004] The purpose of the utility model is to provide a vehicle startup and shutdown control circuit for the above problems.
[0005] To achieve the above-mentioned purpose, the utility model discloses a vehicle starting and shutoff control circuit, including a common power supply, a key power supply and a starting power supply, and its structural characteristics are that a first normally open relay and a second normally open relay are connected in parallel to the common power supply, a normally closed relay and a starting and shutoff solenoid valve are connected in parallel to the second normally open relay, a second normally open relay and a normally closed relay are connected in parallel to the key power supply, a starter and a first normally open relay are connected in parallel to the starting power supply, and an alarm instrument is electrically connected to the circuit at the output end of the normally closed relay.
[0006] After adopting the above structure, the second normally open relay cooperates with the normally closed relay and the start-stop solenoid valve to simultaneously control the start-stop solenoid valve's suction holding power, ensuring that when the start-stop solenoid valve is suctioned, if the suction power is out of power, the solenoid valve remains in the suction state, and the alarm instrument electrically connected to the normally closed relay can effectively monitor the state of the second normally open relay when the key is powered on, and by cooperating with the first normally open relay and the second normally open relay, the start-stop solenoid valve can be effectively controlled to supply fuel to the engine.
[0007] Preferably, the first normally open relay includes a first relay normally open contact power-on circuit and a first relay coil power-on circuit, the common power supply is connected to the circuit at the input end of the first relay normally open contact power-on circuit, the start-stop solenoid valve is electrically connected to the output end circuit of the first relay normally open contact power-on circuit, and the starting power supply is connected to the input end of the first relay coil power-on circuit.
[0008] Preferably, the second normally open relay includes a second relay normally open contact power-on circuit and a second relay coil power-on circuit, the key power supply is electrically connected to the input end of the second relay coil power-on circuit, the common power supply is electrically connected to the input end of the second relay normally open contact power-on circuit, and the output end circuit of the second relay normally open contact power-on circuit is connected in parallel with a normally closed relay and a start-stop solenoid valve.
[0009] Preferably, the normally closed relay includes a relay normally closed contact power-on circuit and a third relay coil power-on circuit, the input end circuit of the relay normally closed contact power-on circuit is electrically connected to the key power supply and the output end circuit of the relay normally closed contact power-on circuit is electrically connected to an alarm instrument, and the input end circuit of the third relay coil power-on circuit is connected to the output end of the second relay normally open contact power-on circuit.
[0010] Preferably, the output circuit of the normally open contact energizing circuit of the second relay is electrically connected to the pull-in holding electrical connection port of the start-up flameout solenoid valve.
[0011] Preferably, the output circuit of the normally open contact energizing circuit of the first relay is electrically connected to the pull-in electrical connection port of the start-stop solenoid valve.
[0012] To sum up, the beneficial effects of the utility model are: the utility model is simple to operate and has high safety. By cooperating with the second normally open relay, the normally closed relay and the start-stop solenoid valve, the start-stop solenoid valve can be controlled to hold the power at the same time, ensuring that when the start-stop solenoid valve is energized, if the power is off, the solenoid valve remains in the energized state. The alarm instrument electrically connected to the normally closed relay can effectively monitor the state of the second normally open relay when the key is powered on. By cooperating with the first normally open relay and the second normally open relay, the start-stop solenoid valve can be effectively controlled to supply fuel to the engine. In this way, the energization and holding control of the shutdown solenoid valve and the monitoring of the key power-on state are realized through the vehicle start and shutdown control circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is the electrical schematic diagram of the utility model as a whole.
[0014] In the figure: 1. Common power supply; 2. Key power supply; 3. Starting power supply; 4. First normally open relay; 5. Second normally open relay; 6. Normally closed relay; 7. Start-stop solenoid valve; 8. Alarm instrument; 9. First relay normally open contact power circuit; 10. First relay coil power circuit; 11. Second relay normally open contact power circuit; 12. Second relay coil power circuit; 13. Relay normally closed contact power circuit; 14. Third relay coil power circuit; 15. Pull-in holding electrical connector; 16. Pull-in electrical connector; 17. Starter. DETAILED DESCRIPTION
[0015] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0016] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.
[0017] like Figure 1 As shown, the utility model includes a common power supply 1, a key power supply 2 and a starting power supply 3. A first normally open relay 4 and a second normally open relay 5 are connected in parallel to the common power supply 1, and a normally closed relay 6 and a start-stop solenoid valve 7 are connected in parallel to the second normally open relay 5. A starter 17 and the first normally open relay 4 are connected in parallel to the starting power supply 3. The first normally open relay 4 includes a first relay normally open contact power-on circuit 9 and a first relay coil power-on circuit 10. The second normally open relay 5 includes a second relay normally open contact power-on circuit 11 and a second relay coil power-on circuit 12, and the normally closed relay 6 includes a relay normally closed contact power-on circuit 13 and a third relay coil power-on circuit 14. When designing, the common power supply 1 and the first relay normally open contact power-on circuit are connected in parallel to each other. The circuit of the input end of the circuit 9 is connected, and at the same time, the common power supply 1 is also electrically connected to the input end of the second relay normally open contact power-on circuit 11, and the above-mentioned starting power supply 3 is connected to the input end of the first relay coil power-on circuit 10. When the first relay coil power-on circuit 10 is energized, the switch on the first relay normally open contact power-on circuit 9 is controlled to be attracted, so that the first relay normally open contact power-on circuit 9 is energized. The above-mentioned starting and shutting down solenoid valve 7 is electrically connected to the output end circuit of the first relay normally open contact power-on circuit 9. During manufacturing, the output end circuit of the first relay normally open contact power-on circuit 9 is electrically connected to the attraction electrical connection port 16 of the starting and shutting down solenoid valve 7. When the first relay normally open contact power-on circuit 9 is energized, the attraction of the starting and shutting down solenoid valve 7 is controlled.
[0018] A second normally open relay 5 and a normally closed relay 6 are connected in parallel to the key power supply 2, and an alarm meter 8 is electrically connected to the circuit at the output end of the normally closed relay 6. During design, the key power supply is electrically connected to the input end of the second relay coil power circuit 12, and at the same time, the input end circuit of the relay normally closed contact power circuit 13 is also electrically connected to the key power supply 2, and the input end circuit of the third relay coil power circuit 14 is connected to the output end of the second relay normally open contact power circuit 11; and the output end circuit of the second relay normally open contact power circuit 11 is connected in parallel with the normally closed relay. 6 and the start-stop solenoid valve 7. When the current of the key power supply 2 passes through the second relay coil power-on circuit 12, the switch of the second relay normally open contact power-on circuit 11 is closed and energized, thereby energizing the third relay coil power-on circuit 14, and controlling the switch on the relay normally closed contact power-on circuit 13 to be energized. During manufacturing, the output end circuit of the relay normally closed contact power-on circuit 13 is electrically connected to the alarm instrument 8, and the output end circuit of the second relay normally open contact power-on circuit 11 is electrically connected to the energizing and maintaining electrical connection port 15 of the start-stop solenoid valve 7.
[0019] When in use, this starting mode is used for vehicles using a start-stop solenoid valve 7. When the key is powered on, the current of the key power supply 2 passes through the second relay coil power circuit 12, closing the switch of the second relay normally open contact power circuit 11. The current of the common power supply 1 energizes the second relay normally open contact power circuit 11, thereby energizing the third relay coil power circuit 14 and disconnecting the switch of the relay normally closed contact circuit. The alarm instrument 8 does not display an abnormality, and then controls the start-stop solenoid valve 7 connected in parallel to the output end of the second relay normally open contact power circuit 11 to maintain the energized state. At the same time, the vehicle starting electrical signal of the starting power supply 3 reaches the starter 17 and the first relay coil power circuit 10, energizing the first relay normally open contact power circuit 9, and starting the start-stop. The solenoid valve 7 is normally energized and the solenoid valve oil circuit is always in an open state. At this time, the whole vehicle starts normally; when the whole vehicle is shut down, the key is powered off, the electrical signal of the starting power supply 3 is disconnected, and the current of the key power supply 2 disconnects the second relay coil power circuit 12, so that the switch of the second relay normally open contact power circuit 11 is disconnected, and the start-stop solenoid valve 7 connected in parallel to the output end of the second relay normally open contact power circuit 11 is disconnected and energized. At the same time, the relay normally closed contact circuit is powered off and the alarm instrument 8 does not display an abnormality, the first relay coil power circuit 10 is powered off and the switch of the first relay normally open contact power circuit 9 is disconnected, so that the start-stop solenoid valve 7 is disconnected, thereby shutting down the vehicle; when the key is powered on and the second relay fails, the relay normally closed contact circuit is energized, and the alarm instrument 8 alarms.
[0020] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A vehicle start and stop control circuit, comprising a common power supply (1), a key power supply (2) and a start power supply (3), characterized in that: The common electric power source (1) is connected in parallel with a first normally open relay (4) and a second normally open relay (5); the second normally open relay (5) is connected in parallel with a normally closed relay (6) and a start-stop solenoid valve (7); the key electric power source (2) is connected in parallel with a second normally open relay (5) and a normally closed relay (6); the starting electric power source (3) is connected in parallel with a starter (17) and the first normally open relay (4); and the circuit at the output end of the normally closed relay (6) is electrically connected with an alarm instrument (8).
2. The vehicle start and stop control circuit as claimed in claim 1, characterized in that: The first normally open relay (4) comprises a first relay normally open contact power-on circuit (9) and a first relay coil power-on circuit (10), the common power supply (1) is connected to the circuit at the input end of the first relay normally open contact power-on circuit (9), the start-stop solenoid valve (7) is electrically connected to the circuit at the output end of the first relay normally open contact power-on circuit (9), and the start power supply (3) is connected to the input end of the first relay coil power-on circuit (10).
3. The vehicle start and stop control circuit according to claim 1, characterized in that: The second normally open relay (5) comprises a second relay normally open contact power-on circuit (11) and a second relay coil power-on circuit (12); the key power supply (2) is electrically connected to an input end of the second relay coil power-on circuit (12); the common power supply (1) is electrically connected to an input end of the second relay normally open contact power-on circuit (11); and an output end circuit of the second relay normally open contact power-on circuit (11) is connected in parallel to a normally closed relay (6) and a start-stop solenoid valve (7).
4. The vehicle start and stop control circuit according to claim 3, characterized in that: The normally closed relay (6) comprises a relay normally closed contact power circuit (13) and a third relay coil power circuit (14), the input end circuit of the relay normally closed contact power circuit (13) is electrically connected to the key power supply (2), and the output end circuit of the relay normally closed contact power circuit (13) is electrically connected to an alarm instrument (8), and the input end circuit of the third relay coil power circuit (14) is connected to the output end of the second relay normally open contact power circuit (11).
5. The vehicle start and stop control circuit as claimed in claim 3, characterized in that: The output circuit of the normally open contact energizing circuit (11) of the second relay is electrically connected to the pull-in holding electrical connection port (15) of the start-stop solenoid valve (7).
6. The vehicle start and stop control circuit as claimed in claim 2, characterized in that: The output circuit of the normally open contact energizing circuit (9) of the first relay is electrically connected to the pull-in electrical connection port (16) of the start-stop solenoid valve (7).