CN218367680U - Control system, engine tail gas treatment device, engine and engineering machinery - Google Patents
Control system, engine tail gas treatment device, engine and engineering machinery Download PDFInfo
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- CN218367680U CN218367680U CN202223060622.2U CN202223060622U CN218367680U CN 218367680 U CN218367680 U CN 218367680U CN 202223060622 U CN202223060622 U CN 202223060622U CN 218367680 U CN218367680 U CN 218367680U
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Abstract
The utility model relates to a control system and engine exhaust processing apparatus, engine and engineering machine tool. The control system comprises a whole vehicle battery, a whole vehicle power supply delay circuit breaker, a whole vehicle controller, an engine starting switch, a main relay and an auxiliary relay. The whole vehicle battery is respectively connected with the whole vehicle controller, the main relay and the auxiliary relay through the whole vehicle power supply delay circuit breaker. The engine starting switch is respectively connected with the vehicle control unit and the engine controller. The main relay can connect the delay circuit breaker with the engine controller in a break-make way under the control of the vehicle controller. The auxiliary relay can connect the delay circuit breaker with the engine controller in a break-make manner under the control of the vehicle controller. And responding to the flameout action of the engine starting switch, the vehicle control unit controls the main relay to be switched off and the auxiliary relay to be switched on, and the delayed power-off of the engine controller is realized. Suck-back of the urea pump after engine shut-down is achieved when used with a urea injection system.
Description
Technical Field
The utility model relates to a control system including engine controller of engineering machine tool especially relates to a can realize the control system of engine controller's wherein time delay outage to and including this control system in order to realize the engine exhaust treatment device of urea injection system's urea pump suck-back after the vehicle stalls, including this control system or exhaust treatment device's engine and engineering machine tool.
Background
At present, diesel vehicle engines are required to be equipped with an exhaust gas treatment device according to the requirements of the four national regulations, and the exhaust gas treatment device usually comprises a urea injection system for reducing the emission of nitrogen oxides in the exhaust gas. However, if there is residual urea in the urea hydraulic line and the after-treatment part after the engine is stopped, the residual urea is crystallized due to the characteristics of the urea itself to cause clogging or bursting of the hydraulic line and the after-treatment part, so that it is necessary to suck all of the residual urea back to the urea tank.
At present, after the operation of engineering machinery is completed, an operator screws an engine starting switch back to an engine flameout position, and under the control of a vehicle control unit, the engine control unit is immediately powered off, so that a urea injection system cannot continue to work, and a urea pump cannot complete suck-back and emptying of residual urea. In addition, for some work machines, after the engine is shut down, the engine controller may be required to perform other controls or operations, such as some data storage. As described above, these controls or operations cannot be completed because the engine controller is immediately powered down.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least one of the above problems and/or other problems in the prior art.
The utility model provides a control system, which comprises a vehicle battery, a vehicle controller, an engine starting switch and a main relay, wherein the engine starting switch is respectively connected with the vehicle controller and the engine controller, and the main relay is connected with the vehicle controller; the control system also comprises a finished automobile power supply delay circuit breaker and an auxiliary relay, and a finished automobile battery is respectively connected with a finished automobile controller, the main relay and the auxiliary relay through the finished automobile power supply delay circuit breaker; the main relay can connect the whole vehicle power supply delay circuit breaker with the engine controller in a break-make way under the control of the whole vehicle controller; the auxiliary relay is connected with the vehicle control unit, and the auxiliary relay can connect the vehicle power supply delay circuit breaker with the engine controller in a break-make way under the control of the vehicle control unit; and the vehicle controller controls the main relay to be switched off and controls the auxiliary relay to be switched on in response to the engine flameout action of the engine starting switch, so that the engine controller is powered off in a delayed mode.
According to one exemplary configuration, in the control system, in response to the engine power supply action of the engine starting switch, the vehicle control unit controls the main relay to be switched on and controls the auxiliary relay to be switched off so as to realize power supply to the engine control unit and control of the vehicle control unit to the engine control unit.
According to one exemplary configuration, the engine start switch comprises a first contact, a second contact and a third contact, wherein the action of going from the first contact to the second contact corresponds to an engine powering action, the action of going from the second contact to the third contact corresponds to an engine running action, and the action of going from the third contact to the first contact corresponds to an engine stalling action.
According to one exemplary configuration, the normally open contacts of the main relay are connected to the engine controller.
According to one exemplary configuration, the normally closed contact of the auxiliary relay is connected to the engine controller.
According to an exemplary configuration, a power indicator lamp is connected between the vehicle power supply delay circuit breaker and the engine controller.
The utility model also provides an engine exhaust treatment device, its control system and urea injection system that includes above-mentioned arbitrary scheme, wherein the engine control ware among the control system is connected to urea injection system and controls the urea pump among the urea injection system and carry out the suck-back of urea during engine control ware time delay outage.
The utility model also provides an engine, especially diesel engine, its include according to the control system of above-mentioned arbitrary scheme or engine exhaust treatment device.
The utility model also provides an engineering machine tool, it includes as above the engine.
In each of the above examples of the present invention, since the auxiliary relay is provided, the standby power supply line of the engine controller is powered on after the engine is turned off, and the engine controller is powered off in a delayed manner. And the delay working time period of the engine controller not only comprises the time period from the disconnection of the main relay to the operation of the delay circuit breaker of the power supply of the whole vehicle, but also comprises the time period from the disconnection of the delay circuit breaker of the power supply of the whole vehicle to the actual disconnection, so as to fully ensure that the engine controller completes the required operation. Further, the utility model discloses only through setting up auxiliary relay in order forming the reserve power supply line of engine controller and set up whole car power master switch into delay circuit breaker, make minimum change to current control system, on the structure that does not change current control system and the basis of operation logic, can realize the time delay outage of engine controller, consequently the more renewal and the improvement of realization to current system of being convenient for. The utility model provides an including this control system's tail gas processing apparatus because engine controller wherein can delay the outage for remaining urea can suck back the urea case in urea hydraulic line and the aftertreatment part (for example, SCR catalyst converter), and this has eliminated remaining urea crystallization and can make pipeline or part jam or the risk of rising and splitting. And, the utility model discloses set up power indicator lamp on the reserve power supply line of engine controller in order showing whether this circuit normally works, improved the security performance of system. Furthermore, the utility model discloses a time delay circuit breaker is mechanical switch, can manual disconnection and closure, and this has saved complicated circuit and has saved manufacturing cost with relevant control cost.
Drawings
The features and advantages of the present invention will be clearly understood through a consideration of the detailed description provided hereinafter with reference to the accompanying drawings. It is to be understood that the drawings are merely exemplary and are not to be considered as limiting the invention, in which:
fig. 1 shows a schematic diagram of a control system according to an exemplary embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described below with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a more thorough understanding and enabling description of the present invention to those skilled in the art. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it is to be understood that the invention is not to be limited to the specific embodiments described. Rather, any combination of the various features and elements described below is contemplated as being suitable for practicing the invention, whether or not they relate to different embodiments. Thus, the following aspects, features, embodiments and advantages are merely illustrative and are not considered elements or limitations of the claims except where explicitly recited in a claim.
The utility model discloses at first provide a control system including engine controller, this control system can realize this engine controller's time delay outage. As exemplarily shown in fig. 1, the control system includes: the system comprises a whole vehicle battery 1, a whole vehicle power supply delay circuit breaker 2, a whole vehicle controller 3, an engine controller 5, an engine starting switch 4, a main relay 6 and an auxiliary relay 11; the whole vehicle battery 1 is respectively connected with a whole vehicle controller 3, a main relay 6 and an auxiliary relay 11 through a whole vehicle power supply delay circuit breaker 2; the engine starting switch 4 is respectively connected with the vehicle control unit 3 and the engine controller 5; the main relay 6 is connected with the vehicle control unit 3, and the vehicle power supply delay circuit breaker 2 and the engine controller 5 can be connected in a break-make way under the control of the vehicle control unit; the auxiliary relay 11 is connected with the vehicle control unit 3, and the vehicle power supply delay circuit breaker 2 and the engine controller 5 can be connected in a break-make way under the control of the vehicle control unit; and wherein, in response to an engine stall action of the engine start switch 4, the vehicle control unit 3 controls the main relay 6 to be turned off and controls the sub relay 11 to be turned on.
In this exemplary scheme, when the engine start switch 4 is screwed back to the engine stall position, the vehicle controller controls the main relay 6 to be turned off and controls the auxiliary relay 11 to be turned on, the engine controller power supply line 9 where the main relay 6 is located is turned off and the engine controller backup power supply line 8 where the auxiliary relay 11 is located is turned on, thus ensuring the delayed power-off of the engine controller 5, during which the engine controller can continue to perform its operations, such as controlling the suck-back of the urea pump in the urea injection system 7 and the urea emptying of the injection system, until the delay period of the vehicle power delay cut-off switch 2 is over. The delayed operation period of the engine controller 5 includes not only the period after the main relay 6 is turned off until the complete vehicle power supply delayed cut-off switch 2 is operated, but also the period after the complete vehicle power supply delayed cut-off switch 2 is turned off until it is actually turned off, to sufficiently ensure that the engine controller completes the required operation. In addition, the scheme only arranges the auxiliary relay 11 to form the standby power supply line 8 of the engine controller and constructs the main switch of the power supply of the whole vehicle into the time-delay circuit breaker 2, makes a minimum change on the existing control system, and can realize the time-delay power-off of the engine controller on the basis of not changing the structure and the operation logic of the existing control system so as to realize the required control operation, thereby being more convenient for realizing the updating and the improvement of the existing system.
Illustratively, the connections between the various components in the control system and the signal flow direction are such that: in response to the engine power supply action of the engine starting switch 4, the vehicle control unit 3 controls the main relay 6 to be switched on and controls the auxiliary relay 11 to be switched off so as to realize power supply to the engine control unit 5 and control of the vehicle control unit 3 to the engine control unit 5.
In the exemplary embodiment of the present invention, the main relay 6 is turned on simultaneously with the auxiliary relay 11, the engine controller backup power supply line 8 is turned off when the engine controller power supply line 9 is turned on, and the engine controller operates normally. The structure enables the circuit where the main relay is located, the engine controller and the vehicle controller to operate normally before the engine is not flamed out, and the working mode of the previous control system is not changed.
In the example of the present invention, as shown in fig. 1, the engine start switch 4 includes a first contact 4-1, a second contact 4-2, and a third contact 4-3, wherein the action of turning from the first contact 4-1 to the second contact 4-2 corresponds to the above-described engine power-on action, the action of turning from the second contact 4-2 to the third contact 4-3 corresponds to the engine running action, and the action of turning from the third contact 4-3 to the first contact 4-1 corresponds to the above-described engine stall action. Those skilled in the art will appreciate that the configuration of the engine start switch is merely exemplary and that other configurations of switches may be used, as long as the same switching function is achieved and signals are sent to the hybrid controller 3 and the engine controller 5.
As shown in fig. 1, the normally open contacts 6-3 of the main relay 6 are preferably connected to the engine controller 5. Preferably, the normally closed contact 11-3 of the auxiliary relay 11 may also be connected to the engine controller 5. When the engine starting switch 4 is switched from the contact 4-1 to the contact 4-2, the vehicle control unit 3 controls the contact 6-1 of the main relay 6 to be electrified and sucked, and the contact 6-2 is switched to the contact 6-3, so that the power supply line 9 of the engine controller is connected and the engine controller 5 is electrified; meanwhile, the vehicle control unit 3 controls the auxiliary relay 11 to rotate from the normally closed contact 11-3 to the contact 11-2, the auxiliary relay 11 is disconnected, and therefore the standby power supply line 8 of the engine controller is disconnected. The engine controller 5 is powered and operates normally via line 9 on which the main relay 6 is located. When the engine starting switch 4 is rotated back to the contact 4-1 from the contact 4-3, the engine controller 5 obtains a flameout signal to flameout the engine, and meanwhile, the vehicle controller 3 controls the main relay 6 to be rotated back to the contact 6-2 from the contact 6-3, so that the main relay 6 is disconnected, and the power supply line 9 of the engine controller is disconnected; meanwhile, the vehicle control unit 3 controls the auxiliary relay 11 to be switched to the contact 11-3 from the contact 11-2, and the auxiliary relay 11 is switched on, so that the engine controller 5 supplies power in a delayed mode through the standby power supply line 8 of the engine controller where the auxiliary relay 11 is located.
According to an example, a power indicator lamp 10 can be connected between the whole vehicle power supply delay cut-off switch 2 and the engine controller 5. The power indicator lamp 10 is preferably located between the sub-relay 11 and the engine controller 5. If the power indicator lamp 10 is still not turned off after the vehicle power supply delay cut-off switch 2 is turned on for a certain time (for example, two minutes), an alarm operator or a maintenance person checks the standby power supply line 8, the vehicle power supply delay cut-off switch 2 and the auxiliary relay 11 to ensure safety.
According to the utility model discloses a further aspect, the control system that can realize engine controller's time delay outage can be used for controlling the urea injection system, provides an engine exhaust processing apparatus from this, and it includes the control system and the urea injection system 7 of any above-mentioned example. As shown in fig. 1, the engine controller 5 in the control system is connected to the urea injection system 7 and controls the urea pump in the urea injection system to suck back urea during a delayed power-off period of the engine controller. The exhaust gas treatment device of the engine can suck back residual urea in a urea hydraulic pipeline and an after-treatment component (such as an SCR (selective catalytic reduction) catalyst) after flameout due to the fact that urea can be sucked back, and therefore the risk that the pipeline or the component is blocked or cracked due to residual urea crystals is eliminated.
According to the utility model discloses a still another aspect still provides an engine, and this engine includes the control system or this engine exhaust processing apparatus of any above-mentioned example. The engine controller of the engine can realize delayed power-off, so that certain operations of the engine controller, such as control of back suction and emptying of a urea pump after the engine is shut down, storage of data by the engine controller and the like, can be performed after the engine is shut down. The utility model also provides an engineering machine tool including this engine. Which accordingly has the advantages brought by the control system, the exhaust gas treatment device and the engine.
Industrial applicability
The following describes an implementation of an exemplary embodiment of the present invention, taking the control system shown in fig. 1 as an example. Note that, the vehicle control unit 3 and the engine control unit 5 of the present invention and the structures for realizing the respective functions thereof are known structures.
The exemplary control system includes: the system comprises a whole vehicle battery 1, a whole vehicle power supply delay circuit breaker 2, a whole vehicle controller 3, an engine starting switch 4 (also called an engine key switch), an engine controller 5, a main relay 6, an indicator lamp 10 and an auxiliary relay 11. The first end of the whole vehicle power supply delay circuit breaker 2 is connected with the whole vehicle battery 1, and the second end of the whole vehicle power supply delay circuit breaker 2 is respectively connected with the whole vehicle controller 3, the main relay 6 and the auxiliary relay 11. The vehicle controller 3 is respectively connected with the vehicle power supply delay circuit breaker 2, the main relay 6, the auxiliary relay 11 and the engine starting switch 4; the engine controller 5 is connected to the main relay 6, the sub relay 11, the engine start switch 4, and the urea injection system 7, respectively.
And under the condition that the whole vehicle power supply delay circuit breaker 2 is manually closed, the whole vehicle controller 3 is electrified. In response to the engine starting switch 4 being turned from the contact 4-1 to the contact 4-2, the vehicle control unit 3 controls the contact 6-1 of the main relay 6 to be electrified and closed, and is turned from the contact 6-2 to the contact 6-3, so that the engine controller power supply line 9 is connected and the engine controller 5 is electrified; meanwhile, the vehicle control unit 3 controls the auxiliary relay 11 to rotate from the normally closed contact 11-3 to the contact 11-2, and the auxiliary relay 11 is switched off, so that the engine controller standby power supply line 8 where the auxiliary relay 11 is located is switched off. When the engine start switch 4 is turned to the 4-3 contact, the engine controller 5 obtains a signal from the engine start switch 4 to operate the engine and at the same time controls the urea injection system 7 to start normal operation.
When the engineering machinery finishes working and the engine starting switch 4 is rotated back to the contact 4-1, the engine controller 5 obtains a flameout signal from the engine starting switch to flameout the engine, and meanwhile, the vehicle control unit 3 controls the main relay 6 to be rotated back to the contact 6-2 from the contact 6-3, so that the main relay 6 is disconnected, and the power supply line 9 of the engine controller where the main relay 6 is located is disconnected; meanwhile, the vehicle control unit 3 controls the auxiliary relay 11 to rotate from the contact 11-2 to the contact 11-3, the auxiliary relay 11 is switched on, and therefore the engine controller 5 supplies power in a delayed mode through the engine controller standby power supply line 8 where the auxiliary relay 11 is located. And then the whole vehicle power supply delay cut-off switch 2 can be manually opened by an operator, the whole vehicle power supply delay cut-off switch 2 is cut off after delaying for a period of time (for example, two minutes), and the standby power supply line 8 of the engine controller still keeps electrified in the period of time. The engine controller 5 may still be operated, for example to control the urea injection system 7, so that the urea pump performs a suck-back purge action. The power indicator light 10 should remain on for a long period of time during which the engine controller backup power supply line 8 is energized. If the vehicle is flamed out and the whole vehicle power supply delay circuit breaker 2 is powered off for two minutes, the power indicator lamp 10 is not extinguished, and the lamp plays a warning role to remind an operator or maintenance personnel to check a power supply line so as to ensure safety.
It will be apparent to those skilled in the art that various modifications and variations can be made in the above disclosed embodiments without departing from the scope or spirit of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and disclosed examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims and their equivalents.
Claims (10)
1. A control system, the control system comprising: the system comprises a finished automobile battery (1), a finished automobile controller (3), an engine controller (5), an engine starting switch (4) and a main relay (6), wherein the engine starting switch (4) is respectively connected with the finished automobile controller (3) and the engine controller (5), and the main relay (6) is connected with the finished automobile controller (3); it is characterized in that the preparation method is characterized in that,
the control system further comprises a whole vehicle power supply delay circuit breaker (2) and an auxiliary relay (11), wherein a whole vehicle battery (1) is respectively connected with the whole vehicle controller (3), the main relay (6) and the auxiliary relay (11) through the whole vehicle power supply delay circuit breaker (2); the main relay (6) can connect the whole vehicle power supply delay circuit breaker (2) with the engine controller (5) in a break-make way under the control of the whole vehicle controller (3); the auxiliary relay (11) is connected with the vehicle control unit (3), and the auxiliary relay (11) can connect the vehicle power supply delay circuit breaker (2) with the engine controller (5) in a break-make manner under the control of the vehicle control unit (3); and in response to an engine flameout action of the engine starting switch (4), the vehicle control unit (3) controls the main relay (6) to be switched off and controls the auxiliary relay (11) to be switched on so as to enable the engine controller (5) to be powered off in a delayed mode.
2. The control system according to claim 1, characterized in that, in the control system, in response to an engine power supply action of the engine start switch (4), the vehicle control unit (3) controls the main relay (6) to be turned on and controls the sub relay (11) to be turned off to achieve power supply to the engine controller (5) and control of the vehicle control unit (3) to the engine controller (5).
3. A control system according to claim 2, characterized in that the engine start switch (4) comprises a first contact (4-1), a second contact (4-2) and a third contact (4-3), wherein the action of going from the first contact (4-1) to the second contact (4-2) corresponds to the engine powering action, the action of going from the second contact (4-2) to the third contact (4-3) corresponds to the engine running action, and the action of going from the third contact (4-3) to the first contact (4-1) corresponds to the engine stalling action.
4. A control system according to any one of claims 1-3, characterized in that the normally open contacts (6-3) of the main relay (6) are connected to the engine controller (5).
5. The control system according to claim 4, characterized in that the normally closed contact (11-3) of the auxiliary relay (11) is connected with the engine controller (5).
6. The control system according to any one of claims 1-3, characterized in that a power indicator (10) is connected between the vehicle power supply delay cut-off switch (2) and the engine controller (5).
7. An engine exhaust gas treatment device, characterized in that it comprises a control system according to any of claims 1-6 and a urea injection system (7), wherein an engine controller (5) in the control system is connected to the urea injection system (7) and controls a urea pump in the urea injection system (7) to suck back urea during a delayed power-off of the engine controller (5).
8. An engine, characterized in that the engine comprises a control system according to any one of claims 1-6 or an engine exhaust gas treatment device according to claim 7.
9. The engine of claim 8, wherein the engine is a diesel engine.
10. A working machine, characterized in that it comprises an engine according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223060622.2U CN218367680U (en) | 2022-11-17 | 2022-11-17 | Control system, engine tail gas treatment device, engine and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223060622.2U CN218367680U (en) | 2022-11-17 | 2022-11-17 | Control system, engine tail gas treatment device, engine and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218367680U true CN218367680U (en) | 2023-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223060622.2U Active CN218367680U (en) | 2022-11-17 | 2022-11-17 | Control system, engine tail gas treatment device, engine and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218367680U (en) |
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2022
- 2022-11-17 CN CN202223060622.2U patent/CN218367680U/en active Active
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