CN201385663Y - System used for controlling vehicle - Google Patents
System used for controlling vehicle Download PDFInfo
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- CN201385663Y CN201385663Y CN200920001801U CN200920001801U CN201385663Y CN 201385663 Y CN201385663 Y CN 201385663Y CN 200920001801 U CN200920001801 U CN 200920001801U CN 200920001801 U CN200920001801 U CN 200920001801U CN 201385663 Y CN201385663 Y CN 201385663Y
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Abstract
The utility model provides a system used for controlling a vehicle, which comprises a monitoring device and an exhaust braking control device, wherein the monitoring device is used to monitor a vehicle system and the exhaust braking control device is used to enable the vehicle to enter a limping state through exhaust braking when the fault of the vehicle system is monitored and the vehicle is required to be in the limping state. Through the system, the vehicle is enabled to enter the limping state through exhaust braking when the fault of the vehicle system is detected and may affect any of the exhaust performance of the vehicle system, the driving performance of the vehicle system, the safety of the vehicle system and the safety of the vehicle driving. Compared with the prior art, the utility model has the advantages that the system can enable the vehicle to effectively be in the limping state, the safety of the vehicle driving, the exhaust performance of the vehicle, the driving performance of the vehicle and the safety of the vehicle can be effectively ensured, and the usability of the vehicle is improved.
Description
Technical field
The utility model relates to vehicle control technology field, relates in particular to a kind of system that is used for control vehicle.
Background technology
Diesel engine relies on its good dynamic property, economy and durability to be used widely on engine installation and vehicle from coming out one.Simultaneously, the caused problem of environmental pollution of the exhaust emissions of automotive diesel engine is the problem that vehicle control technology field is paid close attention to always.In the tail gas that vehicle is discharged, mainly comprise particulate material and nitrogen oxide NOx.Particulate material and NOx can be to polluting environment, and especially NOx is bigger for the harm of environment.At present, measures such as the upgrading of the structure and parameter optimization of main optimization by diesel engine emission controls by improving combustion, injection system, combustion chamber, fuel oil, exhaust-gas after-treatment realize the control to exhaust emissions.
In the prior art, can play the better controlled effect to exhaust emissions by above-mentioned these technology, yet, especially when the vehicular discharge control system breaks down, the problem that can exist exhaust emissions to exceed standard still.
In addition, when understanding for other faults of the safety of the safety of the driving of the emission performance that occurs influence Vehicular system at Vehicular system, Vehicular system, Vehicular system self or vehicular drive, how keeping the safety of emission performance, driving or the safety of himself or the vehicular drive of Vehicular system better, also is the problem that this area is being inquired into always.
The utility model content
In view of this, one of the purpose of this utility model is to provide a kind of method and system that is used for control vehicle, with actv. control vehicle more.
According to an aspect of the present utility model, provide a kind of method that is used for control vehicle.This method can comprise: Vehicular system is monitored; And when monitoring the Vehicular system fault and need make vehicle enter the limping state, make vehicle enter the limping state by energy brake.
In according to an embodiment aspect this of the present utility model, making vehicle enter the limping state by energy brake can comprise: according to current engine speed, the activation of control energy brake is limited in described predetermined threshold or following with the rotating speed with driving engine.
In according to another embodiment aspect this of the present utility model, the activation of control energy brake can comprise: when current engine speed is higher than described predetermined threshold, activate energy brake; And when current engine speed is lower than described predetermined threshold, close energy brake.
In according to the another embodiment aspect this of the present utility model, if the safety of the emission performance of the Vehicular system fault effects Vehicular system that monitors, the driving of Vehicular system, Vehicular system self and the safety of vehicular drive one or more, then need to make vehicle to enter the limping state.
In according to the embodiment again aspect this of the present utility model, the fault that influences the safety of the safety of driving, Vehicular system self of emission performance, the Vehicular system of Vehicular system and vehicular drive comprises one or more in the following: failure of fuel system; The after-treatment system fault; The air inlet system and exhaust system fault; And cooling system failure.
In according to another embodiment aspect this of the present utility model, predetermined threshold can be provided with according to the demand of the safety of the safety of the driving of the emission performance that guarantees Vehicular system, Vehicular system, Vehicular system self and vehicular drive.
In according to the another embodiment aspect this of the present utility model, described method may further include: when monitoring the Vehicular system fault and need make vehicle enter the limping state, to the vehicle user indication information relevant with this Vehicular system fault.
According on the other hand of the present utility model, provide a kind of system that is used for control vehicle.This system can comprise: monitoring device is arranged to Vehicular system is monitored; And the energy brake control setup, be arranged to when monitoring the Vehicular system fault and need make vehicle enter the limping state, make vehicle enter the limping state by energy brake.
In according to an embodiment aspect this of the present utility model, described energy brake control setup can further be arranged to: according to current engine speed, the activation of control energy brake is limited in described predetermined threshold or following with the rotating speed with driving engine.
In according to another embodiment aspect this of the present utility model, described energy brake control setup can further be arranged to when current engine speed is higher than described predetermined threshold, activates energy brake; And when current engine speed is lower than described predetermined threshold, close energy brake.
In according to the another embodiment aspect this of the present utility model, if the safety of the emission performance of the Vehicular system fault effects Vehicular system that described monitoring device monitors, the driving of Vehicular system, Vehicular system self and the safety of vehicular drive one or more, then need to make vehicle to enter the limping state.
In according to the embodiment again aspect this of the present utility model, the fault that influences the safety of the safety of driving, Vehicular system self of emission performance, the Vehicular system of Vehicular system and vehicular drive can comprise one or more in the following: failure of fuel system; The after-treatment system fault; The air inlet system and exhaust system fault; And cooling system failure.
In according to the another embodiment aspect this of the present utility model, described predetermined threshold can be provided with according to the demand of the safety of the safety of the driving of the emission performance that guarantees Vehicular system, Vehicular system, Vehicular system self and vehicular drive.
According to of the present utility model aspect this another preferred embodiment in, described system may further include: indicating device, be arranged to when monitoring the Vehicular system fault and need make vehicle enter the limping state, to the vehicle user indication information relevant with this Vehicular system fault.
By according to method and system of the present utility model, can be in the safety of the safety of the driving of the emission performance that detects Vehicular system fault effects Vehicular system, Vehicular system, Vehicular system self and vehicular drive any one the time, make vehicle enter the limping state by energy brake.With realize the prior art of the state of walking lamely by control fuel charge and injection pressure and compare, can make vehicle enter the limping state according to method and system of the present utility model with effective means more, and then guaranteed the safety of vehicular drive, the emission performance of vehicle, the driving of vehicle and the safety of vehicle self more effectively, improved vehicle operation simultaneously.
Description of drawings
By shown embodiment in conjunction with the accompanying drawings is elaborated, above-mentioned and other features of the present utility model will be more obvious, and identical label is represented same or analogous parts in the utility model accompanying drawing.In the accompanying drawings,
Fig. 1 shows the diagram of circuit that is used for the method for control vehicle according to an embodiment of the present utility model;
Fig. 2 shows the diagram of circuit of method of controlling the rotating speed of driving engine according to an embodiment of the present utility model by energy brake;
Fig. 3 shows the schematic block diagram according to the system that is used for control vehicle of an embodiment of the present utility model; And
Fig. 4 shows the schematic block diagram according to the system that is used for control vehicle of another embodiment of the present utility model.
The specific embodiment
Below with reference to the accompanying drawings, by embodiment the method and system that is used for control vehicle that the utility model provides is described.
At first, the embodiment of the method that is used for control vehicle that the utility model provides will be described referring to figs. 1 to Fig. 2.
Fig. 1 shows the diagram of circuit that is used for the method for control vehicle according to an embodiment of the present utility model.
As shown in Figure 1, in step 101, Vehicular system is monitored.
To the detection of Vehicular system, can whole Vehicular system be detected at the emission performance of Vehicular system, the driving of Vehicular system, the safety of Vehicular system self and the safety of vehicular drive.
For the emission performance of Vehicular system, can realize detection by some modes to the exhaust emissions of vehicle.
In an embodiment of the present utility model, can use the detector that is used to detect tail gas to come directly exhaust emissions to be monitored.For example, use NOx sensor that can obtain from the market by commercial sources or particulate matter sensors directly detect the content of oxides of nitrogen and particle in the Vehicular exhaust.
In addition, owing to when the vehicular discharge control system breaks down, also can cause emission from vehicles to exceed standard usually,, realize monitoring indirectly to exhaust emissions so can detect by fault to vehicular discharge control system and related system thereof.Vehicular discharge control system and related system thereof mainly comprise fuel oil system, after-treatment system, air inlet system and exhaust system and cooling system, and wherein any one or a plurality of et out of order may cause that all exhaust emissions exceeds standard.Therefore, by to causing in fuel oil system, after-treatment system, air inlet system and exhaust system and the cooling system that critical component that exhaust emissions exceeds standard and associated crucial value monitor, the exhaust emissions of monitor vehicle indirectly.
For fuel oil system, for example the ECU (Electrical Control Unit) of fuel injector, injection pump, fuel gauging unit, control fuel oil system etc. is crucial for the exhaust emissions monitoring.For after-treatment system, it comprises exhaust gas recycle (Exhaust Gas Recycle, EGR) system, selective reduction (Selective Catalytic Reduction, SCR) system, particulate organic carbon (Particulate Organic Carbon, POC) system, diesel particulate filter (DieselParticulate Filter, DPF) system etc., for the exhaust emissions monitoring, be crucial for example: the EGR valve in the egr system, and the electromagnetic valve that is used to control the EGR valve with lower member or value; Be used in the SCR system atomize urea urea pump, be used to spray urea urea nozzle, be used to control the ECU (Electrical Control Unit) of the injection of urea; And the exhaust temperature of the pressure reduction of DPF system and POC system.For air inlet system and exhaust system, for example monitoring is crucial to blwr for exhaust emissions.For cooling system, for example monitoring is crucial for exhaust emissions for the gas temperature of cooling system discharge and pressure.
Should be appreciated that the driving for Vehicular system, the safety of Vehicular system self or the consideration of vehicle safety, can monitor the miscellaneous part in the Vehicular system similarly.These will all be known for those skilled in the art, therefore in order not obscure the utility model, repeat no more herein.
In addition, need to prove that common same fault may cause multiple potential problem simultaneously.Such as, fault, the rail pressure in the common rail fuel combustion system of the fuel injector of fuel oil system is too high, the oil mass dosage device fault in the common rail fuel combustion system or intrasystem some temperature or pressure are higher than the upper limit etc., all can relate to the self-security and the emission performance of Vehicular system simultaneously.
For the monitoring of Vehicular system, can utilize by at the utility model purpose and the design-calculated monitoring system realizes.Be equipped with at vehicle under the situation of fault localization system, also can have obtained failure message from existing vehicle breakdown diagnostic system.
Then, in step 102, when monitoring the Vehicular system fault, determine whether to make vehicle to enter the limping state.
In according to an embodiment of the present utility model, if the safety of the emission performance of the Vehicular system fault effects Vehicular system that monitors, the driving of Vehicular system, Vehicular system self and the safety of vehicular drive one or more, then need to make vehicle to enter the limping state.
For example, utilizing the tail gas detector directly to monitor under the situation of exhaust emissions, resulting detected value of tail gas detector (for example content of oxides of nitrogen) and the standard value of being scheduled to can compared, to determine whether exhaust emissions exceeds standard.For example, when wherein any one surpasses predetermined standard content, determine promptly that the exhaust emissions of vehicle exceeds standard at the amount of nitrogen oxides that detects or particle content.If vehicular discharge exceeds standard, can determine that then Vehicular system fault has taken place and influenced the discharging of Vehicular system, so vehicle need enter the limping state.
In addition, under the situation of the exhaust emissions that comes the indirect monitoring vehicle by the fault that detects emission control systems, can when detecting the emission control systems fault, think that vehicle need enter the limping state.Although as understood by one of ordinary skill in the art, the actual conditions of this moment may be that exhaust emissions does not exceed standard as yet, but the fault of emission control systems finally still can have influence on emission from vehicles, therefore it can be thought vehicular discharge exceeds standard in the utility model, vehicle need enter the limping state.It will be understood by those skilled in the art that according to application demand also can determine whether these faults can cause that vehicular discharge exceeds standard, only when confirming that fault causes that vehicular discharge exceeds standard, think that just vehicle need enter the limping state by further analysis.
Whether influence the standard of the safety of the safety of driving, Vehicular system self of emission performance, the Vehicular system of Vehicular system or vehicular drive about the Vehicular system fault, can demarcate according to the experimental knowledge of existing knowledge and those skilled in the art in the prior art.
If determine not need Vehicular system is protected in step 102, then this process is back to step 101, continues Vehicular system is monitored; Otherwise this process proceeds to step 103.
In step 103, make vehicle enter the limping state by energy brake.
Can control the control of engine speed by energy brake, and then make vehicle enter the limping state.Below, will at first be described in the embodiment of the present utility model the control that realizes engine speed to enter the method for limping state with reference to figure 2.
With reference to figure 2, Fig. 2 shows the diagram of circuit of method of controlling the rotating speed of driving engine according to an embodiment of the present utility model by energy brake.
In step 201, obtain current engine speed.In existing Vehicular system, the device that is used for the detection of engine rotating speed usually has been equipped with, these information can obtain for the ECU (Electrical Control Unit) that is used to control driving engine.
In step 202, determine whether current engine speed surpasses predetermined threshold.This predetermined threshold can be provided with according to the demand of the safety of the safety of the driving of the emission performance that guarantees Vehicular system, Vehicular system, Vehicular system self or vehicular drive.This predetermined threshold can be set to when the safety of the safety of the driving of the emission performance of Vehicular system fault effects Vehicular system, Vehicular system, Vehicular system self or vehicular drive, make vehicle to travel safely, simultaneously guarantee the emission performance of Vehicular system, the driving of Vehicular system, the safety of Vehicular system self as much as possible, improved vehicle operation simultaneously.
If the engine speed current in step 202 surpasses this predetermined threshold, then this process proceeds to step 203; Otherwise this process proceeds to step 205.
In step 203, determine whether engine exhaust and brake activates, if un-activation still, then this process proceeds to step 204, activates energy brake, so that the moment of torsion by the control driving engine but the rotating speed of driving engine reduce; Otherwise this process finishes.
In step 205, determine whether energy brake activates, if activated energy brake, then this process proceeds to step 206, closes energy brake; Otherwise this process finishes.
By the method for control engine speed shown in Figure 2, when engine speed is higher than predetermined value, activate energy brake, because the moment of torsion of driving engine is limited at this moment, and then the rotating speed of driving engine is descended; And drop to predetermined value or when following, close energy brake at the rotating speed of driving engine, driving engine is turned round under the situation of moment of torsion without limits, thereby realize so-called " limping " mode of operation.
Need to prove that the method for describing with reference to figure 2 can be carried out at interval with preset time above, to guarantee determining that the exceed standard rotating speed of rear engine of tail gas is in predetermined threshold or following basically always.
In another preferred implementation of the present utility model, when monitoring the Vehicular system fault and need make vehicle enter the limping state, can also be further to the vehicle user indication information relevant, so that the prompting vehicle user is overhauled vehicle with this Vehicular system fault.This information can be indicated to vehicle user with in sound, light, the electric mode one or more.For example, can be to indicate by the read out instrument of LED, LCD or the audio devices of loud speaker.
In addition, according to an embodiment of the present utility model, when engine speed is lower than predetermined threshold, also can further control moment of torsion by control fuel charge or injection pressure.
By according to method and system of the present utility model, can be in the safety of the safety of the driving of the emission performance that detects Vehicular system fault effects Vehicular system, Vehicular system, Vehicular system self and vehicular drive any one the time, by energy brake vehicle is controlled, make the rotating speed of driving engine be positioned at predetermined threshold or following, thereby make vehicle enter the limping state.With realize the prior art of the state of walking lamely by control fuel charge and injection pressure and compare, can make vehicle enter the limping state according to method and system of the present utility model with effective means more, and then guaranteed the safety of vehicular drive, the emission performance of vehicle, the driving of vehicle and the safety of vehicle self more effectively, improved vehicle operation simultaneously.
In addition, for non-electric-control system, can't realize the limping state by control fuel charge or injection pressure, and, also can realize the limping state for non-electric-control system by method of the present utility model.
Next, the embodiment of the system that is used for control vehicle that the utility model provides will be described with reference to figure 3 and Fig. 4.
Fig. 3 shows the schematic block diagram according to the system that is used for control vehicle of an embodiment of the present utility model.As shown in Figure 3, system 300 of the present utility model comprises: monitoring device 310 is arranged to Vehicular system is monitored; And energy brake control setup 320, be arranged to when monitoring the Vehicular system fault and need make vehicle enter the limping state, make vehicle enter the limping state by energy brake.
In an embodiment of the present utility model, energy brake control setup 320 can be configured to according to current engine speed, and the activation of control energy brake is limited in described predetermined threshold or following with the rotating speed with driving engine.Further, energy brake control setup 320 can be configured to: when current engine speed is higher than described predetermined threshold, activate energy brake; And when current engine speed is lower than described predetermined threshold, close energy brake.
In another embodiment of the present utility model, if the safety of the emission performance of the Vehicular system fault effects Vehicular system that described monitoring device monitors, the driving of Vehicular system, Vehicular system self and the safety of vehicular drive one or more, then need to make vehicle to enter the limping state.Wherein, the fault that influences the safety of the safety of driving, Vehicular system self of emission performance, the Vehicular system of Vehicular system and vehicular drive can comprise one or more in the following: failure of fuel system; The after-treatment system fault; The air inlet system and exhaust system fault; And cooling system failure.
In an embodiment of the present utility model, this predetermined threshold can be provided with according to the demand of the safety of the safety of the driving of the emission performance that guarantees Vehicular system, Vehicular system, Vehicular system self or vehicular drive.
In addition, Fig. 4 also shows the system's schematic block diagram that is used for control vehicle according to another embodiment of the present utility model.As shown in Figure 4, system 400 of the present utility model comprises: monitoring device 410, and it is arranged to Vehicular system is monitored corresponding to the monitoring device among Fig. 3 310; And energy brake control setup 420, it is arranged to when monitoring the Vehicular system fault and need make vehicle enter the limping state corresponding to the energy brake control setup 420 among Fig. 3, makes vehicle enter the limping state by energy brake.In addition, different with the described system of Fig. 3 300 is, system 400 further comprises: indicating device 430 is arranged to when monitoring the Vehicular system fault and need make vehicle enter the limping state, to the vehicle user indication information relevant with this Vehicular system fault.
This indicating device 430 can be installed in any appropriate location that makes things convenient for the user to see, for example in the operator's compartment, and can be with in sound, light, the electric mode one or more to vehicle user indication and the emission from vehicles relevant information that exceeds standard.For example, this indicating device 430 can be the form such as the read out instrument of LED, LCD, also can be the form such as the audio devices of loud speaker.
About the operation of monitoring device 310,410, energy brake control 320,420 and indicating device 430, can be specifically with reference to top description about method of the present utility model.
Should be noted that above-described all embodiments just provide for purposes of illustration, and should not be construed as restriction of the present utility model.Can there be some modification in the utility model, for example, can control the rotating speed of driving engine by oil spout, but when fuel oil system breaks down, controls the rotating speed of driving engine by activating energy brake.In addition, also can control the rotating speed of driving engine simultaneously by control oil spout and activation energy brake.These modification are all in scope of the present utility model.
In addition, should be noted that in the embodiment of describing in the above, mode by example is described for the parts and the value of emission detections key, this only is the purpose of property presented for purpose of illustration, and is not to be exhaustive, so the utility model is not limited in this.
In addition, should be noted that in the embodiment of describing in the above, with the diesel motor is that example is described the utility model, and in fact, the utility model is not limited thereto, the utility model can also be applied to the driving engine of other types, such as engine petrol.
In addition, need to prove,, it will be appreciated by those skilled in the art that the utility model also can be used for similar devices such as engineering truck, construction machinery and equipment although the utility model is described in detail with the form of vehicle.
In addition, should be noted that also embodiment of the present utility model can realize with the combination of software, hardware or software and hardware.Hardware components can utilize special logic to realize; Software section can be stored in the memory device, and by suitable instruction execution system, for example microprocessor or special designs hardware are carried out.
Though described the utility model, should be appreciated that the utility model is not limited to disclosed embodiment with reference to the embodiment of considering at present.On the contrary, the utility model is intended to contain the interior included various modifications and the equivalent arrangements of spirit and scope of claims.The scope of following claim meets broad interpretation, so that comprise all such modifications and equivalent structure and function.
Claims (4)
1. a system that is used for control vehicle is characterized in that, comprising:
Monitoring device is arranged to Vehicular system is monitored; And
The energy brake control setup is arranged to when monitoring the Vehicular system fault and need make vehicle enter the limping state, makes vehicle enter the limping state by energy brake.
2. system according to claim 1, it is characterized in that described energy brake control setup is that the activation that is arranged to according to current motor speed control energy brake is limited in described predetermined threshold or following energy brake control setup with the rotating speed with driving engine.
3. system according to claim 2, it is characterized in that described energy brake control setup is to be arranged to the energy brake control setup that activates energy brake and close energy brake when current engine speed is lower than described predetermined threshold when current engine speed is higher than described predetermined threshold.
4. according to each described system of claim 1 to 3, it is characterized in that, further comprise:
Indicating device is arranged to when monitoring the Vehicular system fault and need make vehicle enter the limping state, to the vehicle user indication information relevant with this Vehicular system fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920001801U CN201385663Y (en) | 2009-01-07 | 2009-01-07 | System used for controlling vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920001801U CN201385663Y (en) | 2009-01-07 | 2009-01-07 | System used for controlling vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN201385663Y true CN201385663Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920001801U Expired - Lifetime CN201385663Y (en) | 2009-01-07 | 2009-01-07 | System used for controlling vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063121A (en) * | 2010-12-16 | 2011-05-18 | 奇瑞汽车股份有限公司 | Automobile body control system |
| CN101492051B (en) * | 2009-01-07 | 2011-07-27 | 潍柴动力股份有限公司 | Method and system for controlling vehicle |
| CN105857289A (en) * | 2016-04-22 | 2016-08-17 | 潍柴动力股份有限公司 | Safe driving control method and system based on air pressure information |
-
2009
- 2009-01-07 CN CN200920001801U patent/CN201385663Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492051B (en) * | 2009-01-07 | 2011-07-27 | 潍柴动力股份有限公司 | Method and system for controlling vehicle |
| CN102063121A (en) * | 2010-12-16 | 2011-05-18 | 奇瑞汽车股份有限公司 | Automobile body control system |
| CN105857289A (en) * | 2016-04-22 | 2016-08-17 | 潍柴动力股份有限公司 | Safe driving control method and system based on air pressure information |
| CN105857289B (en) * | 2016-04-22 | 2018-08-31 | 潍柴动力股份有限公司 | Safety traffic control method based on pressure information and system |
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