CN103158707B - Intelligent start/stop control system - Google Patents
Intelligent start/stop control system Download PDFInfo
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- CN103158707B CN103158707B CN201110416905.3A CN201110416905A CN103158707B CN 103158707 B CN103158707 B CN 103158707B CN 201110416905 A CN201110416905 A CN 201110416905A CN 103158707 B CN103158707 B CN 103158707B
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- 238000002347 injection Methods 0.000 claims description 17
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- 230000007935 neutral effect Effects 0.000 claims description 17
- 239000000446 fuel Substances 0.000 description 24
- 230000005540 biological transmission Effects 0.000 description 15
- 239000007858 starting material Substances 0.000 description 15
- 238000004378 air conditioning Methods 0.000 description 13
- 230000001960 triggered effect Effects 0.000 description 8
- 239000013013 elastic material Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000004134 energy conservation Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
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Abstract
The present invention relates to a kind of intelligent start/stop control system, this intelligent start/stop control system is used for automobile, is preferred for conventional vehicle, and wherein, this intelligent start/stop control system comprises intelligent start/stop controller (1) and shifter bar (2); Wherein, shifter bar (2) is provided with a key starting switch (21), elastic component (22) and movable part (23); During movable part (23) pressing elastic component (22), a key starting switch (21) engages and sends a key actuation signal, and intelligent start/stop controller (1) controls starting relay according to a key actuation signal; And, described intelligent start/stop control system also comprises the control profile (3) being positioned at gear panel place, described control profile (3) and movable part (23) interacts with guarantee when shifter bar (2) be linked into travel keep off time, described movable part (23) presses elastic component (22).
Description
Technical Field
The invention relates to an intelligent start-stop control system which can be used for automobiles, in particular to conventional automobiles.
Background
In modern society, people use automobiles for riding instead of walking on a large scale. Traffic lights, traffic jams, parking chatting or parking for small things are often met during driving. Under these conditions, people are used to enable the engine to be in an idling condition. If the engine can be shut down at this time, idle fuel consumption can typically be significantly reduced. And because the fuel consumption of the engine during starting is larger, if the engine is started and stopped frequently in a short time, the saved idling fuel consumption is smaller than the fuel consumed during frequent starting and stopping. Thus, there is a need to appropriately determine when idling is required and when an intelligent stop is required. At the same time, there is also a need to ensure that the engine is restarted at the correct point in time after an intelligent shutdown.
In order to meet the above requirements, intelligent start-stop control systems have been developed. However, at present, an intelligent start-stop control system on an automobile is almost designed for a hybrid vehicle, and the intelligent start-stop control system is matched with a high-power starting motor (the motor has the functions of a starting motor and a generator of a conventional automobile and is powered by a large-capacity battery) in the hybrid vehicle, so that the automobile is directly dragged and started, and an engine is started at the same time. Obviously, an intelligent start-stop control system designed for a hybrid vehicle needs to be matched with a high-power motor and a high-capacity battery for running, so that the intelligent start-stop control system is not suitable for conventional vehicles; in addition, such a costly intelligent start-stop control system may be suitable for hybrid vehicles (which are not cost-sensitive due to their high total cost, and which can employ relatively high-cost components); however, it is not suitable for use with conventional automobiles because purchasers of conventional automobiles are sensitive to price.
Disclosure of Invention
Therefore, an object of the present invention is to provide an intelligent start/stop control system well suitable for a conventional automobile, which can realize intelligent start/stop on the conventional automobile at low cost, achieve energy saving and emission reduction, and has low cost, convenient implementation, high reliability, significant fuel saving effect and wide application range.
In the scope of the present invention, a conventional vehicle is compared with a new energy vehicle such as a hybrid vehicle. Conventional automobiles typically include manual, automatic, and automated manual automobiles.
According to one aspect of the invention, an intelligent start-stop control system for a motor vehicle, preferably a conventional motor vehicle, is provided, wherein the intelligent start-stop control system comprises
An intelligent start-stop controller; and
a shift lever;
wherein,
the gear lever is provided with a key starting switch, an elastic piece and a moving piece; when the movable piece presses the elastic piece, the one-key starting switch is connected and sends a one-key starting signal, and the intelligent starting and stopping controller controls the starting relay according to the one-key starting signal;
moreover, the intelligent start-stop control system also comprises
A control profile at the gear panel, which interacts with the mobile element to ensure that the mobile element presses the elastic element when the gear lever is engaged in a driving gear.
In the simplest case, the control contour comprises a stop surface corresponding to a driving gear and a recess corresponding to a non-driving gear. The non-driving range is, for example, a neutral range, a parking range, or the like. The stop surface causes the movable member and the elastic member to press against each other. In other words, the spring force of the spring member has a tendency to move the movable member away from the one-touch activation switch, and the stop surface blocks this tendency.
Therefore, the intelligent start-stop control system is easy to realize and high in reliability, is relatively independent, can realize modularization, and does not need to change the original vehicle in a large amount. In the simplest case, the gear lever and the faceplate need only be modified to add a corresponding one-touch activation switch and a corresponding trigger member. Preferably, the one-touch start switch is arranged in parallel with the elastic member, so that the movable member engages the one-touch start switch while pressing the elastic member by an external force. Under the normal condition, the intelligent start-stop controller controls the start relay according to a one-key start signal, so that the start motor works to drive the engine to start. Under the condition of no external force action, the elastic piece props the movable piece, so that the pressure borne by the one-key starting switch is small, and the one-key starting switch is in a disconnected state.
Therefore, on the premise of ensuring that intelligent shutdown can be carried out when necessary so as to optimize the oil consumption of the automobile under the idle working condition, the control profile ensures that the restart after shutdown is realized at a proper time. That is, the one-key starting function (in a mode of combining with the generally accepted good parking habit) is skillfully integrated into the intelligent start-stop control system through the invention.
According to a preferred embodiment of the invention, the control contour comprises a stop surface corresponding to a drive stop; and a first hole corresponding to neutral;
when the gear lever is in a neutral position, the movable part extends into the first clamping hole under the action of the elastic part;
preferably, the control contour further comprises a second clamping hole corresponding to the parking gear, and the movable element extends into the second clamping hole under the action of the elastic element when the shift lever is in the parking gear.
Then, the movable part extends into the first clamping hole under the action of the elastic element, which means that no external force acts. That is, because the moving part is not obstructed by the stop surface, the elastic element can prop open the moving part, so that the pressure applied to the one-key starting switch is small, and the one-key starting switch is in an off state.
In this way, the intelligent start-stop control system according to the invention is realized in a particularly simple and cost-effective manner, wherein only the parts of the gear panel adjacent to the P gear and the N gear, which parts are in contact with the lower end of the movable part at the gear lever, need to be hollowed out to form two latching holes. And is particularly useful when retrofitting existing automated gear or automated manual vehicles. When the gearbox is in P gear or N gear, the movable piece extends into the clamping hole and is clamped. When the driver shifts into another gear, it is then necessary to lift the movable part of the gear lever, for example by pressing the resilient element with his hand. This ensures that the one-touch start switch is actuated when the driver engages the drive range (i.e., D range, R range) from the non-drive range (i.e., N range, P range), thereby ensuring that the engine can provide the power required for driving the vehicle.
According to a further preferred embodiment of the invention, the control contour comprises a stop surface corresponding to a driving gear, a first concave lower surface corresponding to a neutral gear, and a first inclined surface between the stop surface and the first concave lower surface;
when the gear lever is in a neutral gear, the movable element extends into the first lower concave surface under the action of the elastic element, and when the gear lever is shifted into a running gear from the neutral gear, the movable element moves upwards under the action of the first inclined surface and presses the elastic element.
When the shift lever is applied to a vehicle with a parking gear, the control contour preferably further comprises a second concave surface corresponding to the parking gear and a second inclined surface located between the stop surface and the second concave surface, wherein when the shift lever is in the parking gear, the movable member extends into the second concave surface under the action of the elastic member, and when the shift lever is shifted from the parking gear into the driving gear, the movable member moves upward under the action of the second inclined surface and presses the elastic member.
Therefore, by arranging the inclined plane, the manual operation of a driver is omitted, the operation intensity of the driver is reduced, and the fatigue of the driver is avoided, so that the safety is improved; while still ensuring that, in the event that the vehicle is stopped for an extended period of time and the engine is intelligently shut down, once a power demand (i.e., a driving demand) arises, intelligent start can be achieved in a timely manner to ensure that the required power is provided.
According to a preferred embodiment of the invention, the starter relay controls the starter motor in parallel with the ignition key.
According to a further preferred embodiment of the invention, the intelligent start-stop control system is further provided with an injection relay which controls the injector in series with an EMS (engine control module) main relay.
According to another preferred embodiment of the invention, the intelligent start-stop control system is provided with a main switch, and when the main switch is turned off, the intelligent start-stop control system is disabled. And under the failure state of the intelligent start-stop control system, the start relay is in a disconnection state, and the oil injection relay is in a connection state. In other words, at this time, the manual operation state of the conventional automobile is restored, and neither the smart shutdown nor the one-touch startup is performed. In addition, the failure of the intelligent start-stop control system can be realized by the power failure of the ignition key.
According to a preferred embodiment of the invention, the intelligent start-stop control system is provided with an idle stop condition judgment module, and when the following conditions are met, the idle stop condition judgment module realizes idle stop:
the main switch of the intelligent start-stop control system is jointed;
the vehicle stops;
the braking vacuum degree is sufficient;
the battery capacity is sufficient;
the gear lever is positioned at the N gear or the P gear;
completing the heat engine of the engine;
the engine system and the intelligent start-stop control system have no serious faults.
According to a preferred embodiment of the present invention, the idle stop condition determination module turns off the air conditioner while the idle stop is achieved.
According to a preferred embodiment of the present invention, the intelligent start-stop control system is provided with a one-key start condition judgment module, and when the following conditions are all satisfied, the one-key start condition judgment module realizes one-key start:
the main switch of the intelligent start-stop control system is jointed;
a key starts the switch closure;
the engine is in a shutdown state;
the engine system and the intelligent start-stop control system have no serious faults.
According to yet another preferred embodiment of the invention, the intelligent start and stop controller has a restart protection module to ensure that the start relay does not engage even if there is a one-touch start signal if the engine is in operation.
According to a further preferred embodiment of the present invention, the one-touch start switch is a one-touch start button which is embedded at the shift lever, and the one-touch start button is located between the movable member and the elastic material; alternatively, the one-touch activation key is arranged in parallel with the resilient material. Therefore, the movable part can press the elastic material and the one-key starting button under the action of external force, and when the external force disappears, the elastic material props the movable part open, so that the natural state is recovered, namely, the one-key starting button is not jointed.
According to a further preferred embodiment of the invention, the movable element may be a movable shaft which is arranged in or next to the gear lever.
According to a further preferred embodiment of the invention, an air conditioning relay is provided which controls the air conditioning compressor in series with the air conditioning compressor relay. The air conditioner relay can reduce the load when the starting motor starts the engine, and can effectively protect the starting motor and the storage battery.
According to a further preferred embodiment of the invention, it is provided that the natural state of the start relay is the open state, the natural state of the injection relay is the engaged state, and the natural state of the air-conditioning relay is the engaged state.
According to another preferred embodiment of the invention, when the ignition key is powered on and the main switch of the intelligent start-stop control system is engaged, the intelligent start-stop control system enters a standby state. The starting relay is in a disconnected state, the oil injection relay is in a connected state, and the air conditioner relay is in a connected state in the standby state. The automobile in the state has an intelligent starting and stopping function.
According to another preferred embodiment of the present invention, in a standby state, the intelligent start-stop control system can execute two intelligent actions: one intelligent action is a shutdown action. When the shutdown action is executed, the starting relay is in a disconnected state, the oil injection relay is in a disconnected state, and the air conditioner relay is in a connected state. The other intelligence acts as a start action. When this action is performed, the air conditioning relay is preferably turned off first, then the fuel injection relay is engaged, and then the start relay is engaged. After the engine successfully injects fuel and ignites, the starting relay is disconnected, and the fuel injection relay keeps jointed. And the air conditioner relay is jointed again until the engine is started successfully.
According to another preferred embodiment of the present invention, the control strategy of the intelligent start-stop control system is premised on the following assumed conditions:
that is, taking an automatic transmission automobile as an example, it is assumed that the driver follows a good parking habit:
a)、Tstop<Keeping the gear D for 15s, and stepping on a foot brake;
b)、15s<Tstop<N gear is engaged for 45s, and a hand brake is pulled;
c)、Tstop>And 45s, engaging a P gear and pulling a hand brake.
According to the experiment, the idling fuel consumption of 7s is equivalent to the fuel consumption of one hot start. Therefore, when the vehicle is stopped for a short time, the starting and stopping operation is carried out, so that fuel cannot be saved, fuel is wasted, electric quantity is wasted, and the service life of the starting motor is shortened. In order to save fuel and reduce the loss of automobile parts as much as possible, the intelligent start-stop control system cannot be triggered when the automobile is stopped for a short time.
Corresponding to the parking habit, the situation a) does not trigger the intelligent start-stop control system, and the situation b) and c) need to trigger the intelligent start-stop control system. The parking habits can be clearly written in the user operation instruction book and are used for guiding more drivers to develop good parking habits, so that the purposes of energy conservation and emission reduction are achieved.
Since there is no major technical breakthrough in vehicle battery charge, it is provided according to a further preferred embodiment of the invention that in order to ensure that the battery has sufficient power to support the next smart start after each smart shut down, the following strategy should be implemented:
after each intelligent shutdown and before power-on ignition and engine non-starting, average voltage V of the battery is collectedAverageAnd according to VAverageDetermines the minimum time T that the engine needs to run (generate electricity) before the next intelligent stopminFor example, as shown in the following table:
| voltage V of the batteryAverage(photovoltaic) | 9.0 | 9.5 | 10.0 | 10.5 | 11.0 | 11.5 | 12.0 | 12.5 | 13.0 | 13.5 | 14.0 |
| Time of generation Tmin (minutes) | 40 | 30 | 25 | 20 | 15 | 10 | 5 | 3 | 2 | 1 | 0 |
Table: relation of minimum power generation time to battery voltage
In order to protect the starter motor even better, the load on the starter motor should be reduced as much as possible before the intelligent start, so that according to a further preferred embodiment of the invention it is provided that the high-power electrical system is switched off simultaneously if the transmission is in P-range or N-range, wherein, in general, the high-power electrical system has headlights and air conditioners, but the headlights are not switched off because they are relevant to driving safety. In other words, the air conditioner is normally turned off at the time of the smart shutdown.
In order to better protect the engine block, it is provided according to a further preferred embodiment of the invention that the lubricating system is activated before the intelligent start-stop control system is activated, i.e. that the cooling water temperature is ensured to be greater than a nominal value.
According to a further preferred embodiment of the invention, it is provided that the intelligent start-stop control system is powered off and stops running when the main switch of the intelligent start-stop control system is not pressed, and the automobile engine system is only controlled by the EMS. And when the main switch of the intelligent start-stop control system is pressed down, the intelligent start-stop control system starts to operate. If the gear lever is in a driving gear, namely not in an N gear or a P gear, the intelligent start-stop control system is only in a standby state (only monitoring signals). If the automobile stops, the transmission is connected to the N gear or the P gear, the water temperature is larger than a calibration value, the electric quantity of the battery is sufficient, then the intelligent start-stop control system can send out the stop action of the intelligent start-stop control system, and the engine is closed. When the driver wants to shift the gear lever from N gear or P gear to D gear, the one-key starting switch is triggered to start the engine.
According to a further preferred embodiment of the invention, it is provided that the intelligent start-stop control system fails if the shutdown is too long.
According to a further preferred embodiment of the invention, it is provided that, if the engine is already started, i.e. is already running, the starter motor is also not operated if a one-touch starter switch is triggered.
According to a further preferred embodiment of the invention, it is provided that the intelligent start-stop control system performs intelligent start-stop battery power reserve and engine start preparation.
According to a further preferred embodiment of the invention, it is provided that the intelligent start-stop control system estimates the battery capacity from the battery voltage before the last start and makes a charging reserve with reference to the calibration time for the next intelligent start-stop action.
According to a further preferred embodiment of the invention, it is provided that the intelligent start-stop control system activates the lubricating fuel system, relieves the starter motor work load and protects against restart.
According to a further preferred embodiment of the invention, it is provided that the intelligent start-stop control system is only able to perform the stop and start actions when the water temperature is greater than a nominal value.
According to a further preferred embodiment of the invention, it is provided that the intelligent start-stop control system switches off the air conditioning compressor before starting the engine and switches on the air conditioning compressor after the engine has been started successfully.
According to a further preferred embodiment of the invention it is provided that the intelligent start-stop control system does not engage the starter relay even if a one-touch starter switch is triggered when the engine is running, so that the starter motor is not active. Thus, restart protection is achieved.
Drawings
An exemplary embodiment of the invention is described below with reference to the drawings. Wherein:
FIG. 1 illustrates a gear lever of an intelligent start-stop control system according to a preferred embodiment of the present invention;
FIG. 2a shows a gear panel of the intelligent start-stop control system according to a preferred embodiment of the invention;
FIG. 2b shows another gear panel of the intelligent start-stop control system according to a preferred embodiment of the present invention;
FIG. 3 shows a circuit block diagram of an intelligent start stop control system according to a preferred embodiment of the present invention;
fig. 4 shows a flow chart of an intelligent start-stop control system according to a preferred embodiment of the invention.
Detailed Description
An embodiment of the intelligent start-stop control system according to the present invention will be described below with reference to an application to an automatic transmission automobile as an example.
The intelligent start-stop control system comprises an intelligent start-stop controller 1 and a gear lever 2, wherein, as shown in fig. 1, the gear lever 2 is provided with a one-key start switch 21, an elastic piece 22 and a movable piece 23.
Under the action of an external force (the external force is greater than the elastic force of the elastic member 22), the movable member 23 presses the elastic member 22, so that the one-touch start switch 21 is engaged and sends a one-touch start signal. As can be seen from fig. 3, the intelligent start-stop controller 1 receives the one-touch start signal and controls the start relay based thereon.
In addition, the intelligent start-stop control system also comprises
A control profile 3 at the gear panel, two preferred embodiments of the control profile 3 being shown in fig. 2a and 2 b. The control contour 3 ensures that the spring element 22 is pressed by the movable element 23 when the selector lever 2 is engaged in a driving gear. It is important that the control profile 3 ensures that at the correct point in time (i.e. when a power demand is present) an external force must occur which engages the one-touch start switch 21. In other words, the invention ensures that, when the driving gear is engaged, an external force sufficient to overcome the spring force of the spring element is necessarily applied to the movable element 23, thereby pressing the spring element 22. In a specific case, this external force can be realized in different ways by means of different control profiles 3.
A preferred embodiment of the control contour 3 according to the invention is shown in fig. 2a, wherein, as shown, the control contour 3 comprises a stop surface 31 corresponding to a driving gear; and a first hole 321 corresponding to neutral; when the shift lever is in the neutral position, the movable element 23 extends into the first hole 321 under the action of the elastic element 22, and at this time, the one-touch start switch 21 is not engaged. This applies to all kinds of conventional automobiles.
Preferably, in a vehicle with a parking gear, for example in an automatic transmission or a vehicle with an automated manual transmission, the control contour 3 further comprises a second catch hole 322 corresponding to the parking gear, and the movable element 23 projects into the second catch hole 322 under the action of the elastic element 22 when the gear lever is in the parking gear, wherein the one-touch start switch 21 is likewise not engaged.
A preferred embodiment of the control contour 3 according to the invention is shown in fig. 2b, wherein the control contour 3 comprises a stop surface 31 corresponding to a driving gear, a first concave lower surface 331 corresponding to a neutral gear; and a first slope 331r between the stop surface 31 and the first lower concave surface 331.
Here, like the embodiment shown in fig. 2a, when the shift lever is in the neutral position, the movable element 23 extends into the first concave lower surface 331 under the action of the elastic element 22, and when the shift lever is shifted from the neutral position into the driving position, the movable element 23 moves upward under the action of the first inclined surface 331r and presses the elastic element 22. That is, without the driver's additional operation to manually press the one-touch start switch 21 or lift the movable shaft of the shift lever), the movable member 23 automatically moves upward and presses the elastic member 22 and the one-touch start switch 21. Similarly, this applies to all kinds of conventional automobiles.
Also preferably, in a vehicle with a parking gear, for example in an automatic transmission or a vehicle with an automated manual transmission, the control contour 3 further comprises a second concave lower surface 332 corresponding to the parking gear and a second inclined surface 332r located between the stop surface 31 and the second concave lower surface 332, wherein the movable element 23 projects into the second concave lower surface 332 under the action of the elastic element 22 when the gear lever is in the parking gear, and the movable element 23 moves upward and presses the elastic element 22 under the action of the second inclined surface 332r when the gear lever is shifted from the parking gear into the driving gear. This also contributes to a reduction in the manipulation strength of the driver.
Fig. 3 shows a circuit block diagram of a preferred embodiment of the intelligent start-stop control system, as is clear from fig. 3, in the intelligent start-stop control system, a start relay is connected in parallel with an ignition key to control a start motor, and the intelligent start-stop control system is further provided with an oil injection relay which is connected in series with an EMS main relay to control an oil injector.
Fig. 3 also shows that the main switch 11 of the intelligent start-stop control system fails when the main switch 11 is turned off.
In fig. 4 a flow chart of a preferred embodiment of the intelligent start stop control system according to the invention is shown, whereby it can be seen that an idle stop is achieved when the following conditions (i.e. idle stop conditions) are all fulfilled:
the main switch 11 of the intelligent start-stop system is connected;
the vehicle stops;
the braking vacuum degree is sufficient;
the battery capacity is sufficient;
the gear lever is positioned at the N gear or the P gear;
completing the heat engine of the engine;
the engine system and the intelligent start-stop system have no serious faults.
The judgment of the above conditions can be realized by an idle stop condition judgment module provided in the intelligent start-stop controller 1, for example.
Preferably, the idle stop condition determination module turns off the air conditioner while the idle stop is achieved, as described above. This can be achieved by means of the air conditioning relay shown in fig. 4.
As is also known from the flowchart shown in fig. 4, the one-touch start is realized when the following conditions (i.e., one-touch start conditions) are all satisfied:
the main switch 11 of the intelligent start-stop system is connected;
a key starts the switch closure;
the engine is in a shutdown state;
the engine system and the intelligent start-stop system have no serious faults.
Similarly, the judgment of the above one-key start condition can be realized by a one-key start condition judgment module provided in the intelligent start-stop controller 1, for example.
In addition, the intelligent start and stop controller 1 shown in fig. 4 may also be provided with a restart protection module to ensure that the start relay does not engage if the engine is in operation, even if there is a one-touch start signal.
In summary, in a particularly preferred embodiment of the invention, which is suitable for application in an automatic transmission automobile, the intelligent start-stop control system realizes an intelligent start-stop function through ingenious gear lever design and intelligent software design, optimizes the oil consumption of the automobile under idle conditions, and achieves the purposes of energy conservation and emission reduction. Although this is described herein primarily with reference to an automatic transmission vehicle, it will be apparent to those skilled in the art that the intelligent start-stop control system is applicable to all conventional vehicles and is equally applicable to hybrid vehicles.
Among these, the designs shown in fig. 1, 2a, 2b, 3 and 4 are included, namely:
transforming a gear lever: as shown in fig. 1, a movable shaft is provided inside the shift lever to serve as a movable member 23. The upper part of the movable shaft is connected with the top end of the gear lever by elastic material, wherein a key starting button or a key starting switch 21 is arranged between the movable shaft and the elastic material. As long as the movable shaft moves upwards, the movable shaft and the elastic material together press the one-key starting key, so that the one-key starting key is triggered to be jointed. In a natural state, the one-key starting key is in a disconnected state due to small pressure applied to the one-key starting key.
Transforming a gear panel: as shown in FIG. 2a, two clamping holes are dug beside the P gear and the N gear of the gear panel at the contact part of the gear panel and the movable shaft of the gear lever. When the gearbox is in P gear or N gear, the blocking hole blocks the movable shaft of the gear shift lever, so that a driver is forced to lift the movable shaft of the gear shift lever when shifting other gears, and a one-key starting button is triggered. Alternatively, as shown in fig. 2b, a touch plate is disposed beside the gear panel, and the touch plate has a stop surface 31 corresponding to the driving range, a first concave lower surface 331 corresponding to the neutral range, and a first inclined surface 331r between the stop surface 31 and the first concave lower surface 331; and preferably, the touch plate further has a second lower concave surface 332 corresponding to the parking position and a second inclined surface 332r between the stop surface 31 and the second lower concave surface 332.
Circuit modification: as shown in fig. 3, several switches and relays are added in terms of hardware, for example, a main switch 11 that controls the whole intelligent start-stop control system; a one-key start switch 21 for controlling the smart start; an oil injection relay (which can be connected with the EMS main relay in series) for controlling the oil injector; a starter relay (which can be controlled in parallel with the ignition key to start the motor) that controls the starter motor. Preferably, an air conditioner relay is additionally arranged and is connected with the air conditioner compressor relay in series to control the air conditioner compressor. The air-conditioning relay is additionally arranged, so that the load of the starting motor when the engine is started can be reduced, and the starting motor and the storage battery can be effectively protected. The natural state of the starting relay is a disconnection state, the natural state of the oil injection relay is a connection state, and the natural state of the air-conditioning relay is a connection state.
And the intelligent start-stop control system has two states, wherein one state is a failure state, and the condition of entering the state is that the ignition key is powered off or the main switch of the intelligent start-stop control system is disconnected. In this state, the start relay is in a disconnected state, the fuel injection relay is in a connected state, and the air-conditioning relay is in a connected state. The failure state of the intelligent start-stop control system is the state of returning the conventional automatic transmission automobile to manual operation; the other is a standby state, and the condition for entering the state is that the ignition key is electrified and the main switch of the intelligent start-stop control system is engaged. In this state, the start relay is in a disconnected state, the fuel injection relay is in a connected state, and the air-conditioning relay is in a connected state. The automobile in the state has an intelligent starting and stopping function. Wherein, under the state of awaiting orders, two kinds of intelligent actions can be realized to intelligence start-stop control system: one is a shutdown action. When the action is executed, the starting relay is in a disconnected state, the oil injection relay is in a disconnected state, and the air conditioner relay is in a connected state. The other is the start action. When the action is executed, the air-conditioning relay is disconnected firstly, then the oil injection relay is connected, and the starting relay is connected again. After the engine successfully injects fuel and ignites, the starting relay is disconnected, and the fuel injection relay keeps jointed. And the air conditioner relay is jointed again until the engine is started successfully.
Improving a software control strategy: as can be seen in fig. 4, this preferred embodiment provides for:
the idle stop conditions include:
an intelligent start-stop system main switch (or intelligent start-stop switch) 11 is engaged;
the vehicle stops;
the braking vacuum degree is sufficient;
the battery capacity is sufficient;
an N gear or P gear state;
completing the heat engine of the engine;
the engine system and the intelligent start-stop control system have no serious faults.
And the engine one-key start condition includes:
the main switch 11 of the intelligent start-stop system is connected;
a key starts the switch closure;
the engine is in a shutdown state;
the engine system and the intelligent start-stop control system have no serious faults.
Furthermore, the embodiment is based on a combination of good parking habits and experimental data that have been performed by most automatic transmission car drivers,
wherein, this parking habit means:
a)、Tstop<Keeping the gear D for 15s, and stepping on a foot brake;
b)、15s<Tstop<N gear is engaged for 45s, and a hand brake is pulled;
c)、Tstop>And 45s, engaging a P gear and pulling a hand brake.
The experimental data show that the idle 7s fuel consumption is equivalent to that of a hot start.
That is, starting and stopping when the vehicle is stopped for too short a time cannot save fuel, wastes fuel, and wastes battery power and the life of the starter motor. In order to save fuel and reduce the loss of automobile parts as much as possible, the intelligent start-stop control system should not be triggered when the automobile is stopped for a short time. In combination with the above parking habits, it means that a) the situation should not trigger the intelligent start-stop control system, and b) and c) the situation should trigger the intelligent start-stop control system. The parking habits can be clearly written in the user operation instruction book and are used for guiding more drivers to develop good parking habits, so that the purposes of energy conservation and emission reduction are achieved.
In order to ensure that the battery has enough power to support the next intelligent starting after each intelligent shutdown, the invention provides a strategy that the average voltage V of the battery is collected after each intelligent shutdown and before the engine is electrified to be ignited and is not startedAverageAnd according to VAverageDetermines the minimum time T that the engine needs to run (generate electricity) before the next intelligent stopmin. Corresponding to this strategy, data for a certain specification battery is given in the attached table above; those skilled in the art will appreciate that batteries of different specifications need to be calibrated separately.
In order to protect the starter motor even better, it is also provided that the load on the starter motor should be reduced as much as possible before the intelligent start. For example, when the transmission is in P-gear or N-gear, the high-power electric appliance is turned off. Generally, a high-power electric appliance includes a headlight and an air conditioner, but the headlight is not turned off because of the safety of driving.
In order to protect the engine cylinder better, it is provided that the lubricating system is activated before the intelligent start-stop control system works, i.e. the temperature of the cooling water is greater than a calibrated value.
Meanwhile, when a main switch of the intelligent start-stop control system is not pressed down, the intelligent start-stop control system is powered off and stops running, and an automobile engine system is only controlled by the EMS. And when the main switch of the intelligent start-stop control system is pressed down, the intelligent start-stop control system starts to operate. If the gear lever is in the driving gear, namely, not in the N gear or the P gear, the intelligent start-stop control system is only in the standby state (only monitoring signals). If the automobile stops, the transmission is in the N gear or the P gear, the water temperature is larger than a calibrated value, the electric quantity of the battery is sufficient, then the intelligent start-stop control system executes the stop action of the intelligent start-stop control system, and the engine is closed. When the driver puts the gear lever from N gear or P gear to D gear (or R gear), a key start button is triggered, and the engine is started. If the machine is stopped for too long, the intelligent start-stop control system fails. If the engine is started, the intelligent start-stop control system enables the starting motor to not work even if a one-key starting key is pressed.
Thus, the present invention has numerous advantages over the prior art, including:
1. the cost is low. The existing intelligent start-stop control system is mostly built on a hybrid vehicle, or a strong hybrid vehicle or a weak hybrid vehicle. The high-power motor is used for dragging the automobile to start, starting the engine and generating power. The large-capacity battery is used for supplying energy to the high-power motor. The high-power motor and the high-capacity battery are high in price, and the invention only needs to add a key on the gear lever and correspondingly and delicately change the control panel, for example, two clamping holes are hollowed out;
2. the realization is convenient. In order to realize intelligent start and stop of an intelligent start and stop control system built on a hybrid vehicle, the intelligent start and stop control system is added, and other control systems such as a battery management system and a motor control system are also configured, so that the whole vehicle control system becomes complicated. The system is independent, does not need any support of an electronic fuel injection system EMS and a transmission control system TCU, and can be modularized;
3. the reliability is high. The intelligent start-stop control system controls the engine to be stopped and started at N gear and P gear, so that the normal start-stop logic of the conventional automatic-gear vehicle is met. Therefore, the starting motor and the battery are not damaged, and other systems of the original automobile are not required to be increased, decreased and changed;
4. the oil consumption is low. On the premise that a user operates according to the good parking habit, fuel can be saved by 8% in urban working conditions;
5. the development time is short. The system is simple and independent, and the functions are easy to realize, so that the system development time is short, the market can be quickly promoted, and the aims of energy conservation and emission reduction are fulfilled;
6. the application range is wide. The system is suitable for all conventional automobiles including manual-gear automobiles, automatic-gear automobiles and manual-automatic integrated automobiles.
Claims (10)
1. An intelligent start-stop control system for an automobile, characterized in that the intelligent start-stop control system comprises
An intelligent start-stop controller (1); and
a shift lever (2);
wherein,
the gear lever (2) is provided with a one-key starting switch (21), an elastic piece (22) and a movable piece (23); when the movable piece (23) presses the elastic piece (22), the one-key starting switch (21) is connected and sends out one-key starting signals, and the intelligent starting and stopping controller (1) controls the starting relay according to the one-key starting signals;
moreover, the intelligent start-stop control system also comprises
A control profile (3) at the gear panel, the control profile (3) interacting with a mobile element (23) to ensure that the mobile element (23) presses the elastic element (22) when the gear lever (2) is engaged in a driving gear.
2. An intelligent start-stop control system according to claim 1, characterized in that the control profile (3) comprises
A stop surface (31) corresponding to a drive gear; and
a first stuck hole (321) corresponding to a neutral position;
when the gear lever is in a neutral position, the movable piece (23) extends into the first clamping hole (321) under the action of the elastic piece (22);
the control contour (3) also comprises a second clamping hole (322) corresponding to the parking gear, and the movable piece (23) extends into the second clamping hole (322) under the action of the elastic piece (22) when the gear lever is in the parking gear.
3. An intelligent start-stop control system according to claim 1, characterized in that the control profile (3) comprises
A stop surface (31) corresponding to a drive gear;
a first lower concave surface (331) corresponding to a neutral position; and
a first inclined surface (331r) located between the stop surface (31) and the first lower concave surface (331);
when the gear lever is in a neutral gear, the movable element (23) extends into the first lower concave surface (331) under the action of the elastic element (22), and when the gear lever is shifted from the neutral gear into a driving gear, the movable element (23) moves upwards under the action of the first inclined surface (331r) and presses the elastic element (22);
the control contour (3) further comprises a second lower concave surface (332) corresponding to the parking gear and a second inclined surface (332r) positioned between the stop surface (31) and the second lower concave surface (332), wherein when the gear lever is in the parking gear, the movable element (23) extends into the second lower concave surface (332) under the action of the elastic element (22), and when the gear lever is shifted from the parking gear into the driving gear, the movable element (23) moves upwards and presses the elastic element (22) under the action of the second inclined surface (332 r).
4. The intelligent start-stop control system according to claim 1, wherein the start relay is connected with an ignition key in parallel to control a start motor.
5. An intelligent start-stop control system according to claim 1, characterized in that the intelligent start-stop control system is provided with an oil injection relay which is connected in series with an EMS main relay to control an oil injector.
6. The intelligent start stop control system of claim 1,
the intelligent start-stop control system is provided with a main switch (11), and when the main switch (11) is disconnected, the intelligent start-stop control system is invalid.
7. The intelligent start-stop control system according to any one of claims 1 to 6, wherein the intelligent start-stop control system is provided with an idle stop condition judgment module, and the idle stop condition judgment module realizes idle stop when the following conditions are met:
the intelligent start-stop system main switch (11) is connected;
the vehicle stops;
the braking vacuum degree is sufficient;
the battery capacity is sufficient;
the gear lever is positioned at the N gear or the P gear;
completing the heat engine of the engine;
the engine system and the intelligent start-stop system have no serious faults.
8. The intelligent start-stop control system according to claim 7, wherein the idle stop condition judgment module turns off an air conditioner while achieving idle stop.
9. The intelligent start-stop control system according to any one of claims 1 to 6, wherein the intelligent start-stop control system is provided with a one-key start condition judgment module, and when the following conditions are all satisfied, the one-key start condition judgment module realizes one-key start:
the intelligent start-stop system main switch (11) is connected;
a key starts the switch closure;
the engine is in a shutdown state;
the engine system and the intelligent start-stop system have no serious faults.
10. An intelligent start-stop control system according to any one of claims 1 to 6, characterized in that the intelligent start-stop controller (1) has a restart protection module to ensure that if the engine is in operation, the start relay is not engaged even if there is a one-key start signal.
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| CN201110416905.3A CN103158707B (en) | 2011-12-14 | 2011-12-14 | Intelligent start/stop control system |
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| CN104057951A (en) * | 2014-05-28 | 2014-09-24 | 江苏万伏新能源有限公司 | Intelligent start-up and shutdown micro-mixing system and control method thereof |
| CN105564415B (en) * | 2014-10-08 | 2018-05-11 | 广州汽车集团股份有限公司 | Intelligent start/stop system and method |
| CN104653318B (en) * | 2015-01-09 | 2017-03-22 | 奇瑞汽车股份有限公司 | One-key starting method and one-key starting device for starting and stopping vehicles at idle speed |
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| JP2001334846A (en) * | 2000-05-29 | 2001-12-04 | Tokai Rika Co Ltd | Device of engine start/stop for vehicle |
| JP4544386B2 (en) * | 2000-12-13 | 2010-09-15 | 井関農機株式会社 | Shift control device for work vehicle |
| DE102009001376B4 (en) * | 2009-03-06 | 2013-03-14 | Zf Friedrichshafen Ag | Actuator with starter switch |
| CN101850767B (en) * | 2009-03-30 | 2013-06-26 | 北汽福田汽车股份有限公司 | Vehicle engine high-speed starting and stopping control method and system based on active shutdown mode |
| CN101994586B (en) * | 2010-09-29 | 2013-01-30 | 重庆长安汽车股份有限公司 | Idling start-stop control system for automobile engine |
| CN202753939U (en) * | 2011-12-14 | 2013-02-27 | 广州汽车集团股份有限公司 | Intelligent start and stop control system |
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