CN108407738B - Fault prompting method for combined lighting of fault lamps of commercial vehicle - Google Patents
Fault prompting method for combined lighting of fault lamps of commercial vehicle Download PDFInfo
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- CN108407738B CN108407738B CN201810145766.7A CN201810145766A CN108407738B CN 108407738 B CN108407738 B CN 108407738B CN 201810145766 A CN201810145766 A CN 201810145766A CN 108407738 B CN108407738 B CN 108407738B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
- B60R16/0234—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions related to maintenance or repairing of vehicles
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Abstract
The invention discloses a fault prompting method for combined lighting of fault lamps of a commercial vehicle, which comprises the following steps: s10, judging whether the commercial vehicle has a fault or not at present, and if the commercial vehicle does not have the fault at present, not needing to operate; when the commercial vehicle has a fault currently, executing S20; and S20, judging whether the fault is an unconfirmed fault, if the fault is the unconfirmed fault, lighting the SVS lamp, and if the fault is the confirmed fault, lighting the MI lamp. According to the fault prompting method for combined lighting of the fault lamps of the commercial vehicle, when the emission faults confirmed after three driving cycles are generated, a user can sense the generation of the faults in the first driving cycle and take related measures in time to repair the faults as soon as possible.
Description
Technical Field
The invention relates to the field of commercial vehicle fault monitoring, in particular to a fault prompting method for combined lighting of an SVS fault lamp and an MI fault lamp of an instrument, which is mainly used for reminding a driver after a fault is generated.
Background
In order to meet increasingly stringent emission regulations, commercial vehicles for diesel engine systems may develop fault monitoring strategies for related assemblies or components for implementing aftertreatment systems that meet emission control. When one assembly or part of the system is abnormal, the system can generate a corresponding fault code according to a corresponding strategy, and the fault generation of a driver is prompted through an SVS fault lamp and an MI fault lamp on the instrument. The fault codes are divided into emission faults and non-emission faults according to whether the fault codes are related to emission, and the existing fault prompting method comprises the following steps: after the non-emission type fault is generated, lighting an SVS fault lamp in the current driving cycle; after the emission-type fault is generated, the MI fault lamp is turned on after the current driving cycle or three driving cycles.
Disclosure of Invention
The invention aims to provide a fault prompting method for combined lighting of fault lamps of a commercial vehicle, which can remind a user of finding a fault as early as possible and carry out corresponding treatment according to a fault phenomenon, and has great benefits for both vehicles and users.
The technical scheme adopted by the invention for solving the technical problems is as follows: a fault prompting method for combined lighting of fault lamps of a commercial vehicle comprises the following steps:
s10, judging whether the commercial vehicle has a fault or not at present, and if the commercial vehicle does not have the fault at present, not needing to operate; when the commercial vehicle has a fault currently, executing S20;
and S20, judging whether the fault is an unconfirmed fault, if the fault is the unconfirmed fault, lighting the SVS lamp, and if the fault is the confirmed fault, lighting the MI lamp.
Optionally, the unconfirmed failure means: the fault code generation condition is met, but the fault code is still in judgment without being confirmed by three driving cycles; the confirmed fault is: and (4) after three driving cycles, confirming that the fault codes are always satisfied and take effect.
Optionally, the combination of the states of the SVS lamp and the MI lamp comprises:
(1) the SVS fault lamp is not on, the MI fault lamp is not on: the SVS fault lamp and the MI fault lamp are not lighted, the current vehicle has no fault, and no fault code is recorded in the memory;
(2) SVS fault is not on, MI fault lamp is on: the SVS fault lamp is not lighted, which indicates that there is no non-emission type fault and an unconfirmed fault of an emission type, the MI fault lamp is lighted, which indicates that there is a confirmed fault of an emission type, and the confirmed fault belongs to a special fault;
(3) the SVS fault lamp is turned on, the MI fault lamp is not turned on: the SVS fault lamp is illuminated, indicating that there are two possibilities: a) there is a non-emission type fault; b) there is an emissions class unconfirmed fault; MI fault lights are not on, indicating that there is no confirmed fault of the emission class;
(4) SVS faulty lamp lighting, MI faulty lamp lighting: the SVS fault lamp is illuminated, indicating that there are two possibilities: a) there is a non-emission type fault; b) there is an emissions class unconfirmed fault; the MI fault lamp is illuminated indicating that there must be a confirmed fault of the emission class.
Optionally, after the fault occurs, the SVS fault lamp is immediately turned on in the current cycle, and after the fault is repaired, the SVS lamp is immediately turned off; after the failure occurs and three cycles are confirmed, the MI lamp is turned on, and after the failure is repaired, the MI lamp is turned off after the failure is confirmed and three cycles are not failed continuously.
The invention has the following beneficial effects: according to the fault prompting method for combined lighting of the fault lamps of the commercial vehicle, when the emission faults confirmed after three driving cycles are generated, a user can sense the generation of the faults in the first driving cycle and take related measures in time to repair the faults as soon as possible.
Drawings
FIG. 1 is a flow chart of a fault prompting method for combined lighting of fault lamps of a commercial vehicle according to the present invention;
FIG. 2 is a diagram illustrating a transition process between multiple states of the fault code of the present invention;
Detailed Description
The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.
Example 1
The embodiment provides a fault prompting method for combined lighting of fault lamps of a commercial vehicle, which comprises the following steps:
s10, judging whether the commercial vehicle has a fault at present
If the commercial vehicle does not have a fault at present, the operation is not required; when the commercial vehicle currently has a fault, S20 is executed.
S20, judging whether the fault is an unconfirmed fault
If the fault is an unconfirmed fault, the SVS lamp is lit, and if not an unconfirmed fault, i.e., a confirmed fault, the MI lamp is lit.
At this time, the state combinations of the SVS lamp and the MI lamp are four in total:
(1) the SVS fault lamp is not on, the MI fault lamp is not on
And the SVS fault lamp and the MI fault lamp are not lighted, so that the current vehicle has no fault, and no fault code is recorded in the memory.
(2) SVS fault is not on, MI fault lamp is on
The SVS failure lamp is not lit indicating that there is no non-emission class failure and an unconfirmed failure of an emission class, and the MI failure lamp is lit indicating that there is a confirmed failure of an emission class, and the failure belongs to a special failure. Such failures typically include only: urea solution exhaustion failure.
(3) The SVS fault lamp is on, the MI fault lamp is not on
The SVS fault lamp is illuminated, indicating that there may be two possibilities: a) there is a non-emission type fault; b) there is an emission class unconfirmed fault. The MI fault lamp is not on, indicating that there is no confirmed fault of the emission class.
(4) SVS trouble lamp lighting, MI trouble lamp lighting
The SVS fault lamp is illuminated, indicating that there may be two possibilities: a) there is a non-emission type fault; b) there is an emission class unconfirmed fault. The MI fault lamp is illuminated indicating that there must be a confirmed fault of the emission class.
Wherein, not confirming the fault means: the fault code generation condition is met, but the fault code is still in judgment without being confirmed by three driving cycles; the confirmed fault is: and (4) after three driving cycles, confirming that the fault codes are always satisfied and take effect.
In this embodiment, the method for prompting the fault of the combination lighting of the fault lamps of the commercial vehicle further includes:
turning on and off of the SVS fault lamp: when a certain fault occurs, the SVS fault lamp is immediately turned on in the current cycle; when the fault is repaired, the SVS lamp is immediately turned off;
lighting and extinguishing of MI fault lamp: after a certain fault occurs and three cycles of confirmation are carried out, the MI lamp is lightened; when the fault is repaired, three cycles are also required for confirmation (three consecutive cycles are not faulty), and the MI lamp is turned off after confirmation of repair.
In the existing diesel engine electric control system, each fault code related to emission only lights an MI fault lamp, namely after the fault code is generated, the MI fault lamp is required to be lighted after the current driving cycle or three driving cycles according to corresponding regulations. When the fault lamp is turned on, indicating that a fault has occurred, the relevant measures resulting from the fault are also executed in the next driving cycle, for example: and (4) limiting the torque. The defects of the existing scheme are as follows: after the faults confirmed after the three driving cycles occur, the user cannot sense the occurrence of the vehicle faults in advance and cannot take corresponding measures in advance; in addition, when failure is confirmed after three cycles, the repair of the failure also requires three driving cycles, during which the measures caused by the failure are always performed. In both cases, the vehicle and the user may be damaged by parts and economy. For example: for a long-distance tractor with a time requirement, after the torque of the vehicle is limited, the arrival time of goods is influenced while system components are influenced, on one hand, the actual use value of the goods can be influenced, and on the other hand, economic loss can be brought to a user.
In the regulation requirements, when different levels of emission class faults occur, the processing mechanism of the faults is also inconsistent, and the following situations are included: reminding a driver that the system has common faults and is not limited; reminding a driver that the system has medium faults, and limiting the torque after 50 hours; and reminding the driver of serious faults and immediately limiting the torque. After the vehicle breaks down, the user can be reminded of finding the fault as early as possible, corresponding processing is carried out according to the fault phenomenon, and great benefits are provided for the vehicle and the user.
According to the fault prompting method for combined lighting of the fault lamps of the commercial vehicle, when the emission faults confirmed after three driving cycles are generated, a user can sense the generation of the faults in the first driving cycle and take related measures in time to repair the faults as soon as possible.
In the four cases described in this embodiment, in combination with the fault code information currently existing in the electronic control system displayed by the meter, the user can perform preliminary judgment and simple maintenance. The specific process is as follows:
if the user meets the situation in the situation 1), the vehicle state is good without processing; if the user meets the situation in the situation 2), the user can check whether the urea solution is used up and add urea in time; if the user meets the condition in the condition 3), the appearance of the part or assembly indicated by the fault code, the wiring harness and the connector connection condition can be checked, preliminary troubleshooting is carried out, and if the fault cannot be cleared, the vehicle is driven to the nearest service station for maintenance as soon as possible; if the user encounters the situation described in condition 4), indicating that there is a confirmed failure of the current emission class of the vehicle, the strategy of vehicle torque limit may have occurred or is about to occur, and the vehicle should be immediately driven to the nearest service station for maintenance, except for the completion of the checks made in 3).
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. A fault prompting method for combined lighting of fault lamps of a commercial vehicle is characterized by comprising the following steps:
s10, judging whether the commercial vehicle has a fault or not at present, and if the commercial vehicle does not have the fault at present, not needing to operate; when the commercial vehicle has a fault currently, executing S20;
s20, judging whether the fault is an unconfirmed fault, if the fault is the unconfirmed fault, lighting the SVS lamp, and if the fault is the confirmed fault, lighting the MI lamp;
wherein, not confirming the fault means: the fault code generation condition is met, but the fault code is still in judgment without being confirmed by three driving cycles; the confirmed fault is: after three driving cycles, the generation condition of the fault code is confirmed to be satisfied all the time, and the fault code takes effect;
the combination of the states of the SVS lamp and the MI lamp comprises:
(1) the SVS fault lamp is not on, the MI fault lamp is not on: the SVS fault lamp and the MI fault lamp are not lighted, the current vehicle has no fault, and no fault code is recorded in the memory;
(2) the SVS fault lamp is not turned on, the MI fault lamp is turned on: the SVS fault lamp is not lighted, which indicates that there is no non-emission type fault and an unconfirmed fault of an emission type, the MI fault lamp is lighted, which indicates that there is a confirmed fault of an emission type, and the confirmed fault belongs to a special fault;
(3) the SVS fault lamp is turned on, the MI fault lamp is not turned on: the SVS fault lamp is illuminated, indicating that there are two possibilities: a) there is a non-emission type fault; b) there is an emissions class unconfirmed fault; MI fault lights are not on, indicating that there is no confirmed fault of the emission class;
(4) SVS faulty lamp lighting, MI faulty lamp lighting: the SVS fault lamp is illuminated, indicating that there are two possibilities: a) there is a non-emission type fault; b) there is an emissions class unconfirmed fault; the MI fault lamp is illuminated indicating that there must be a confirmed fault of the emission class.
2. The method for prompting the fault of the commercial vehicle fault lamp combination lighting up according to claim 1, characterized in that after the fault occurs, the SVS fault lamp is immediately lighted up in the current cycle, and after the fault is repaired, the SVS lamp is immediately extinguished; after the failure occurs and three cycles are confirmed, the MI lamp is turned on, and after the failure is repaired, the MI lamp is turned off after the failure is confirmed and three cycles are not failed continuously.
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