CN115709716A - Vehicle starting control system and control method - Google Patents
Vehicle starting control system and control method Download PDFInfo
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- CN115709716A CN115709716A CN202211378650.0A CN202211378650A CN115709716A CN 115709716 A CN115709716 A CN 115709716A CN 202211378650 A CN202211378650 A CN 202211378650A CN 115709716 A CN115709716 A CN 115709716A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention discloses a vehicle starting control system and a control method, wherein the vehicle starting control system comprises an engine electric control unit, a starter and an action conversion relay, wherein the action conversion relay comprises a coil, a normally open contact and a normally closed contact; a judging switch device which can control whether the coil of the action conversion relay is electrified or not according to the received signal of the engine electric control unit is connected between the coil of the action conversion relay and the engine electric control unit; a starting relay is connected between the normally closed contact of the action conversion relay and the starter, and comprises a coil connected with the normally closed contact of the action conversion relay and a normally open contact connected with the starter; a normally closed flameout switch is connected between a normally open contact of the action conversion relay and the engine electronic control unit; the normally closed contact of the action conversion relay and the normally open contact of the starting relay are both connected with a power supply. The invention realizes the automatic starting and stopping function of the vehicle through the mutual cooperation of a plurality of relays, improves the fuel consumption process and reduces the emission of pollutants.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to a vehicle starting control system and a vehicle starting control method.
Background
At present, when a red light is on, a vehicle driver is used to temporarily stop the vehicle by adopting neutral gear engaging, foot brake treading and other operations, an engine is still in idle running, and the vehicle is started by adopting driving gear engaging, accelerator treading and other operations after a green light is on.
A diesel locomotive engine start-stop system and an engine start-stop control method are disclosed in a comparison document 1 with the application number of 202210557420.4 entitled "diesel locomotive engine start-stop system and engine start-stop control method". Including starting and stopping the controller, the engine is stopped and is triggered the module, and the engine starts trigger module, automobile body electrical control system, battery, generator and starter, wherein: the start-stop controller is used for judging whether the current vehicle needs to activate the engine start-stop control mode or not and carrying out activation operation; the engine stop triggering module is used for detecting stop triggering data; the engine starting triggering module is used for detecting starting triggering data; the electric control system of the automobile body is used for connecting each module and mechanical parts to the start-stop controller.
The pacific automobile network discloses an automatic vehicle starting and stopping technology, and engine starting and stopping means that the automobile can automatically flameout when the automobile stops temporarily (for example, when the automobile waits for a red light) in the driving process. When a forward drive is required, the system automatically restarts one of the engine systems. The use method comprises the following steps: when the automobile is driven, the brake pedal is directly stepped on, the engine can automatically flameout after the automobile is completely stopped for almost two seconds, and if the brake pedal is continuously stepped on, the engine can flameout all the time. As long as the brake is released or the steering wheel is rotated, the engine can automatically ignite immediately, and a user can step on the accelerator to start immediately. The whole process is basically in a D gear state.
The working principle of the engine start-stop system is as follows: when the car stops due to a traffic jam or intersection. The driver steps on the brake pedal and stops to engage the gear. The start-stop system automatically checks that the engine runs idle and has no gear; wheel speed sensors of the anti-lock system show zero; the electronic battery sensor indicates that there is sufficient energy for the next start-up. After the three conditions are met, the engine automatically stops running. When the signal light turns green, the driver depresses the clutch and then starts. Starter & rdquo and start the engine quickly. When the driver steps on the accelerator in gear, the automobile starts quickly. Under the support of a high-efficiency battery technology and a corresponding engine management program, the start-stop system can normally work at a low temperature and can be started only through a short preheating process.
As can be seen from the above comparison documents 1 and 2, the existing automatic start-stop technology for vehicles is realized by a controller, which is high in cost, so that some vehicles with low prices are difficult to have an automatic start-stop function.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide a vehicle starting control system and a vehicle starting control method which can realize the automatic starting and stopping function of a vehicle without a controller.
In order to achieve the purpose, the vehicle starting control system comprises an engine electric control unit, a starter and an action conversion relay, wherein the action conversion relay comprises a coil, a normally open contact and a normally closed contact; a judging switch device which can control whether the coil of the action conversion relay is electrified or not according to a received signal of the engine electronic control unit is connected between the coil of the action conversion relay and the engine electronic control unit; a starting relay is connected between the normally closed contact of the action conversion relay and the starter, and comprises a coil connected with the normally closed contact of the action conversion relay and a normally open contact connected with the starter; a normally closed flameout switch is connected between a normally open contact of the action conversion relay and the engine electric control unit; and the normally closed contact of the action conversion relay and the normally open contact of the starting relay are both connected with a power supply.
Furthermore, a starting protection relay is connected between the normally closed contact of the action switching relay and the coil of the starting relay.
Furthermore, the starting protection relay comprises a coil and a normally open contact, two ends of the coil of the starting protection relay are connected with the engine electric control unit, and the normally open contact of the starting protection relay is connected between the normally closed contact of the action conversion relay and the coil of the starting relay.
Further, a diode is connected between the normally open contact of the starting protection relay and the normally closed contact of the action conversion relay.
Further, an ST-grade switch is connected between the normally open contact of the starting protection relay and the power supply.
Further, an ST-gear switch is connected between the coil of the starting relay and the power supply.
Further, the judging switch device is an instrument.
Still further, a control method based on the vehicle starting control system comprises the following steps:
the method comprises the following steps: if the engine electronic control unit receives the temporary stop signal, judging whether the switch device meets the temporary stop condition;
step two: if the judgment switch device judges that the current vehicle does not meet the temporary parking condition, the coil of the action conversion relay keeps in a power-off state, the engine continues to work, the vehicle idles, if the judgment switch device judges that the current vehicle meets the temporary parking condition, the coil of the action conversion relay is electrified, the normally closed contact of the action conversion relay is disconnected, the normally open contact of the action conversion relay is closed, the engine electric control unit receives a flameout switch signal, the engine stops working, and the vehicle stalls;
step three: if the engine electric control unit receives a vehicle starting signal, the coil of the action conversion relay is powered off, the normally open contact and the normally closed contact of the action conversion relay are restored to the original state, the normally open contact of the starting relay is electrified, the starter works, and the vehicle starts.
Further, the temporary stop signal includes a clutch switch off signal, a brake switch on signal, a neutral switch on signal, a vehicle speed zero signal and a battery voltage signal; the temporary shutdown condition includes a battery voltage above 24.5V; the vehicle starting signal comprises a clutch switch connection signal and a gear engaging signal.
Furthermore, in the third step, if the vehicle flameout time exceeds 5 minutes, no matter whether the engine electronic control unit receives a vehicle starting signal or not, the coil of the action conversion relay is always electrified, the vehicle keeps a flameout state, and at this time, the ST-gear switch must be manually closed to enable the starter to work, so that the vehicle starts.
The invention has the beneficial effects that: the automatic starting and stopping function of the vehicle is realized through the mutual matching of the relays, the fuel consumption process is improved, and pollutants are reduced. The invention can be designed and developed on the basis of the existing product without newly increasing development cost. The functions of parking, starting and the like can be automatically switched. The electrical connection is simple and the cost is low.
Drawings
FIG. 1 is an electrical schematic of a vehicle launch control system of the present invention;
the system comprises an engine electronic control unit 1, a starting protection relay 2, a flameout switch 3, an ST-gear switch 4, a starting relay 5, a starter 6, an instrument 7 and an action conversion relay 8.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The vehicle starting control system shown in fig. 1 comprises an engine electronic control unit 1, a starter 6 and an action conversion relay 8, wherein the action conversion relay comprises a coil, a normally open contact and a normally closed contact; an instrument which can control whether the coil of the action conversion relay 8 is electrified or not according to a received signal of the engine electric control unit 1 is connected between the coil of the action conversion relay 8 and the engine electric control unit 1; a starting relay 5 is connected between the normally closed contact of the action conversion relay 8 and the starter 6, and comprises a coil connected with the normally closed contact of the action conversion relay 8 and a normally open contact connected with the starter 6; a normally closed flameout switch 3 is connected between a normally open contact of the action conversion relay 8 and the engine electronic control unit 1; the normally closed contact of the action conversion relay 8 and the normally open contact of the starting relay 5 are both connected with a power supply.
A starting protection relay 2 is connected between the normally closed contact of the action switching relay 8 and the coil of the starting relay 5. The starting protection relay 2 comprises a coil and a normally open contact, two ends of the coil of the starting protection relay 2 are connected with the engine electric control unit 1, and the normally open contact of the starting protection relay 2 is connected between the normally closed contact of the action conversion relay 8 and the coil of the starting relay 5. A diode is connected between the normally open contact of the starting protection relay 2 and the normally closed contact of the action switching relay 8. An ST-grade switch 4 is connected between the normally open contact of the starting protection relay 2 and the power supply. An ST-level switch 4 is connected between the coil of the starting relay 5 and the power supply.
Specifically, one end of the meter 7 is connected to a coil end of the operation switching relay 8. One end of the coil of the action switching relay 8 is connected with the instrument 7, and the other end is grounded. One end of a normally closed contact of the action conversion relay 8 is connected with a storage battery power supply, and the other end is connected with a normally open contact end of the starting protection relay 2. One end of a normally open contact of the action conversion relay 8 is connected with a power supply of the storage battery, and the other end is connected with a signal end of the flameout switch 3. One end of the ST-grade switch 4 is connected with a storage battery power supply, and the other end is connected with a normally open contact end of the starting protection relay 2 and the cathode of the diode. The negative pole of the diode is connected with the ST switch 4 and the normally open contact end of the starting protection relay 2, and the positive pole is connected with the normally closed contact end of the action switching relay 8. The two ends of the coil of the starting protective relay 2 are connected with the engine electronic control unit 1. One end of the normally open contact of the starting protection relay 2 is connected with the diode and the ST switch 4, and the other end is connected with the coil end of the starting relay 5. One end of the coil of the starting relay 5 is connected with the normally open contact end of the starting protection relay 2, and the other end is grounded. One end of a normally open contact of the starting relay 5 is connected with a storage battery power supply, and the other end of the normally open contact is connected with a starter 6. One end of the starter 6 is connected with the normally open contact end of the starting relay 5, and the other end is grounded.
The control method based on the vehicle starting control system comprises the following steps:
the method comprises the following steps: if the engine electronic control unit 1 receives a temporary stop signal (including a clutch switch off signal, a brake switch on signal, a neutral switch on signal, a vehicle speed zero signal and a storage battery voltage signal), judging whether the switch device meets a temporary stop condition (including that the storage battery voltage is higher than 24.5V);
step two: if the judgment switch device judges that the current vehicle does not meet the temporary parking condition, the coil of the action conversion relay 8 keeps a power-off state, the engine continues to work, the vehicle idles, if the judgment switch device judges that the current vehicle meets the temporary parking condition, the coil of the action conversion relay 8 is electrified, the normally closed contact of the action conversion relay 8 is disconnected, the normally open contact is closed, the engine electric control unit 1 receives a flameout switch signal, the engine stops working, and the vehicle stalls;
step three: if the engine electric control unit 1 receives a vehicle starting signal (including a clutch switch on signal and a gear engaging signal), the coil of the action conversion relay 8 is powered off, the normally open contact and the normally closed contact of the action conversion relay 8 are restored to the original state, the normally open contact of the starting relay 5 is powered on, the starter 6 works, and the vehicle starts.
In the third step, if the vehicle flameout time exceeds 5 minutes, no matter whether the engine electronic control unit 1 receives a vehicle starting signal or not, the coil of the action conversion relay 8 is always electrified, the vehicle keeps a flameout state, and at the moment, the ST-gear switch 4 needs to be manually closed to enable the starter 6 to work, so that the vehicle starts.
The engine electric control unit 1 receives input signals such as a clutch signal, a brake signal, a neutral gear signal, a vehicle speed signal, a flameout signal and the like, and storage battery voltage and the like, and then sends the input signals through a bus, and a bus instrument receives the messages. The instrument 7 receives messages such as vehicle information and the like sent by an engine electric control unit bus, and when the instrument 7 receives input signals such as a clutch switch disconnection signal, a brake switch closing signal, a neutral switch closing signal and a vehicle speed zero and the voltage of a storage battery is above 24.5V, a 'parking' function is started immediately. The coil end of the action conversion relay 8 is electrified by the output end of the instrument, the action conversion relay 8 acts, the original normally closed contact is disconnected, the original normally open contact is closed, a flameout signal of the flameout switch 3 enters the engine electronic control unit 1, the engine stops working, and the vehicle is flamed out.
When the instrument 7 receives the clutch switch on signal and the gear engaging signal again, the output end of the instrument disconnects the coil electrifying end of the action conversion relay 8, the action conversion relay 8 acts again, the normally open contact and the normally closed contact are restored to the original state, the accumulator power supply electrifys the normally open contact end of the starting protection relay 2 through the normally closed contact, the starting relay 5 acts, the starter 6 works, and the vehicle starts.
If the voltage of the storage battery is lower than 24.5V, the starting function is not started.
If the engine off time exceeds 5 minutes, the "take off" function is not initiated. Vehicle starting must be initiated by the ignition key being keyed to ST gear. That is, the ST switch 4 is closed, the starter protection relay 2 is operated, the starter relay 5 is operated, the starter 6 is started, and the vehicle starts to start. The first start of the vehicle must manually close the ST-range switch.
The invention realizes the automatic starting and stopping function of the vehicle through the mutual matching of the plurality of relays, improves the fuel consumption process and reduces the pollutant emission. The invention can be designed and developed on the basis of the existing product without increasing development cost. The functions of parking, starting and the like can be automatically switched. The electrical connection is simple and the cost is low.
Here, it should be noted that the description of the above technical solutions is exemplary, the present specification may be embodied in different forms, and should not be construed as being limited to the technical solutions set forth herein. Rather, these descriptions are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the present invention is limited only by the scope of the claims. The features of the various embodiments of the present invention may be partially or fully combined or spliced with each other and performed in a variety of different configurations as would be well understood by those skilled in the art. Embodiments of the present invention may be performed independently of each other or may be performed together in an interdependent relationship.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (10)
1. A vehicle starting control system comprises an engine electric control unit (1) and a starter (6), and is characterized in that: the device also comprises an action conversion relay (8) which comprises a coil, a normally open contact and a normally closed contact; a judging switch device which can control whether the coil of the action conversion relay (8) is electrified or not according to a received signal of the engine electric control unit (1) is connected between the coil of the action conversion relay (8) and the engine electric control unit (1); a starting relay (5) is connected between the normally closed contact of the action conversion relay (8) and the starter (6), and comprises a coil connected with the normally closed contact of the action conversion relay (8) and a normally open contact connected with the starter (6); a normally closed flameout switch (3) is connected between a normally open contact of the action conversion relay (8) and the engine electric control unit (1); and the normally closed contact of the action conversion relay (8) and the normally open contact of the starting relay (5) are both connected with a power supply.
2. The vehicle launch control system according to claim 1, characterized in that: and a starting protection relay (2) is also connected between the normally closed contact of the action conversion relay (8) and the coil of the starting relay (5).
3. The vehicle launch control system according to claim 2, characterized in that: the starting protection relay (2) comprises a coil and a normally open contact, the two ends of the coil of the starting protection relay (2) are connected with the engine electric control unit (1), and the normally open contact of the starting protection relay (2) is connected with the normally closed contact of the action conversion relay (8) and the coil of the starting relay (5).
4. A vehicle launch control system according to claim 3, characterised in that: and a diode is connected between the normally open contact of the starting protection relay (2) and the normally closed contact of the action conversion relay (8).
5. The vehicle startup control system according to claim 3 or 4, characterized in that: an ST-grade switch (4) is connected between a normally open contact of the starting protection relay (2) and the power supply.
6. A vehicle launch control system according to claim 1, characterised in that: an ST-grade switch (4) is connected between a coil of the starting relay (5) and the power supply.
7. The vehicle launch control system according to claim 1, characterized in that: the judgment switch device is an instrument (7).
8. A control method of a vehicle startup control system according to any one of claims 1 to 7, characterized in that: it comprises the following steps:
the method comprises the following steps: if the engine electric control unit (1) receives the temporary stop signal, judging whether the switch device meets the temporary stop condition;
step two: if the judgment switch device judges that the current vehicle does not meet the temporary parking condition, the coil of the action conversion relay (8) is kept in a power-off state, the engine continues to work, the vehicle idles, if the judgment switch device judges that the current vehicle meets the temporary parking condition, the coil of the action conversion relay (8) is electrified, the normally closed contact of the action conversion relay (8) is opened, the normally open contact of the action conversion relay is closed, the engine electric control unit (1) receives a flameout switch signal, the engine stops working, and the vehicle stalls;
step three: if the engine electric control unit (1) receives a vehicle starting signal, the coil of the action conversion relay (8) is powered off, the normally open contact and the normally closed contact of the action conversion relay (8) are restored to the original state, the normally open contact of the starting relay (5) is powered on, the starter (6) works, and the vehicle starts.
9. The control method of a vehicle startup control system according to claim 8, characterized in that: the temporary parking signal comprises a clutch switch disconnection signal, a brake switch closing signal, a neutral switch closing signal, a vehicle speed zero signal and a storage battery voltage signal; the temporary shutdown condition includes a battery voltage above 24.5V; the vehicle starting signal comprises a clutch switch connection signal and a gear engaging signal.
10. The control method of a vehicle startup control system according to claim 8, characterized in that: in the third step, if the flameout time of the vehicle exceeds 5 minutes, no matter whether the engine electronic control unit (1) receives a vehicle starting signal or not, the coil of the action conversion relay (8) is always electrified, the vehicle keeps a flameout state, and at the moment, the ST-gear switch (4) needs to be manually closed to enable the starter (6) to work, so that the vehicle starts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211378650.0A CN115709716A (en) | 2022-11-04 | 2022-11-04 | Vehicle starting control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211378650.0A CN115709716A (en) | 2022-11-04 | 2022-11-04 | Vehicle starting control system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115709716A true CN115709716A (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211378650.0A Pending CN115709716A (en) | 2022-11-04 | 2022-11-04 | Vehicle starting control system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115709716A (en) |
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2022
- 2022-11-04 CN CN202211378650.0A patent/CN115709716A/en active Pending
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