CN113530632A - Response method and system for fault of sliding sleeve type variable air inlet lift driving stage and readable storage medium - Google Patents
Response method and system for fault of sliding sleeve type variable air inlet lift driving stage and readable storage medium Download PDFInfo
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- CN113530632A CN113530632A CN202110708224.8A CN202110708224A CN113530632A CN 113530632 A CN113530632 A CN 113530632A CN 202110708224 A CN202110708224 A CN 202110708224A CN 113530632 A CN113530632 A CN 113530632A
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- 238000000034 method Methods 0.000 title claims description 24
- 230000004044 response Effects 0.000 title claims description 19
- 230000008859 change Effects 0.000 claims abstract description 12
- 230000001960 triggered effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 4
- 238000012508 change request Methods 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 claims 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
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- 239000000446 fuel Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
- F02B77/082—Safety, indicating or supervising devices relating to valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
Abstract
When the driving level fault occurs, if the driving level fault causes that the lift of each cylinder cannot be kept consistent, torque limitation is carried out on an engine and lift change is forbidden in the current driving cycle, and if the lift of each cylinder can be kept consistent, the lift of each cylinder is switched to the actual lift of the faulty cylinder corresponding to the driving level fault and the lift change is forbidden in the current driving cycle. According to the invention, under the condition that the driving stage fault does not affect the consistency of the lift of each cylinder and the parts of the engine are guaranteed not to be damaged, the air inlet lift switching of each cylinder is kept consistent as much as possible, so that the output torque of the engine is smooth, the monitoring feeling of a driver is improved, and the torque of the engine is limited under the condition that the consistent lift cannot be realized, so that the parts of the engine are protected as much as possible, and the parts of the engine are prevented from being damaged.
Description
Technical Field
The invention relates to an engine control technology, in particular to a method and a system for responding to a fault of a sliding sleeve type variable intake lift driving stage and a readable storage medium.
Background
The valve lift of the traditional engine is fixed and unchanged, and the performance of the engine at high and low rotating speeds cannot be considered. Variable Valve Lift (VVL) technology can change a valve lift according to different working conditions, thereby improving the dynamic property and the economical efficiency of an engine. When the engine is operated at a low load (intake air amount), the valve low lift is adopted, so that pumping loss can be reduced, and fuel economy is improved. When the engine runs under a large load, the valve is switched to a high lift range, so that large power and torque can be output, and the dynamic property is improved. At present, the variable valve lift technology is rapidly developed on an automobile engine and is applied to part of mass-produced automobile models.
The variable valve lift technology is mainly divided into a continuous type and a two-stage type, wherein the two-stage type variable intake lift is mainly realized in a rocker arm type and a sliding sleeve type. The glide sleeve is driven by a plurality of drive stages, as compared to a rocker arm type which can be driven by a single drive stage. When the driving stage of the sliding sleeve breaks down, the air intake lift of each cylinder is inconsistent, and the air intake amount entering each cylinder is different.
When the sliding sleeve type variable intake lift has a driving level fault, the nonuniformity of the intake air amount of each cylinder can be increased, as shown in fig. 1a, the work capacity of each cylinder is nonuniform, the output torque of the engine is not smooth, and the driving feeling is influenced, meanwhile, as the knocking tendency, the pre-ignition tendency and the combustion stability of each cylinder are different, the nonuniformity of the intake air amount of each cylinder can cause the knocking tendency, the pre-ignition tendency and the fire tendency to be aggravated, and the service life of engine parts is influenced, as shown in fig. 1 b.
Disclosure of Invention
The invention aims to solve the technical problems that when the sliding sleeve type variable intake lift has the driving level fault, the air intake amount of each cylinder is uneven, so that the output torque of an engine is not smooth, and knocking, pre-ignition and fire catching tendencies are aggravated.
In order to solve the technical problem, the invention provides a response method for a fault of a sliding sleeve type variable intake lift driving stage, which comprises the following steps: when a driving level fault occurs, if the lift of each cylinder cannot be kept consistent due to the driving level fault, torque limitation is carried out on the engine, lift change is forbidden in the current driving cycle, and if the lift of each cylinder can be kept consistent, the lift of each cylinder is switched to the actual lift of the fault cylinder corresponding to the driving level fault, and the lift change is forbidden in the current driving cycle.
Further, when a driving stage fault occurs and the lift of each cylinder can be kept consistent, if a fault cylinder has a small-lift fault, the actual lift of the fault cylinder is a large lift and the fault cylinder cannot be switched from the large lift to the small lift, and the lift of the non-fault cylinder is switched to the large lift; if the fault cylinder has a large lift fault, the actual lift of the fault cylinder is a small lift and the fault cylinder cannot be switched from the small lift to the large lift, and at the moment, the lifts of the non-fault cylinders are all switched to the small lift.
Further, the response method comprises the following specific steps:
step S1, after the current driving cycle starts, judging whether the current driving cycle has lift driving level faults, if yes, entering step S2, otherwise responding to the lift request;
step S2, judging whether the driving level fault can cause the lift of each cylinder to be inconsistent, if so, going to step S3, otherwise, going to step S4;
step S3, limiting the engine torque, and the process advances to step S6;
step S4, identifying the actual lift of the fault cylinder with the driving stage fault, and triggering a driving stage fault lift consistency request;
step S5, switching the lift of each cylinder to the actual lift of the fault cylinder corresponding to the driving level fault;
in step S6, the lift change is prohibited in the current driving cycle until the current driving cycle is finished.
Further, in step S2, the number N of faulty cylinders when the drive stage fault occurs1Total number of cylinders N of cylinder0Satisfies the condition of 1. ltoreq. N1＜N0And when the driving stage fault is a short-ground fault, an open-circuit fault or a short power failure, judging that the driving stage fault can cause inconsistent lift of each cylinder.
Further, in step S3, the engine is torque-limited by limiting the maximum rotation speed of the engine and/or the maximum intake air amount.
Meanwhile, the invention also provides a response system for the fault of the sliding sleeve type variable intake lift driving stage, which comprises the following components:
the first judgment unit is used for judging whether the current driving cycle has lift driving level faults or not, if so, the lift request response unit is triggered, and if not, the second judgment unit is triggered;
the second judgment unit is used for judging whether the lift of each cylinder is inconsistent due to the driving level fault, if so, the engine torque control unit is triggered, and if not, the fault cylinder lift identification unit is triggered;
an engine torque control unit for performing torque limitation on the engine;
the fault cylinder lift identification unit is used for identifying the actual lift of the fault cylinder with the driving stage fault and triggering a driving stage fault lift consistency request;
and the lift request responding unit is used for responding to a normal lift request or responding to the driving level fault lift consistency request, switching the lift of each cylinder to the actual lift of the fault cylinder corresponding to the driving level fault, and forbidding responding to the lift change request.
Further, the number N of the faulty cylinders when the failure of the driving stage occurs1Total number of cylinders N of cylinder0Satisfies the condition of 1. ltoreq. N1＜N0And when the driving stage fault is a short-ground fault, an open-circuit fault or a short-power fault, the second judging unit judges that the driving stage fault can cause inconsistent lift of each cylinder.
Further, the engine torque control unit performs torque limitation on the engine by limiting a maximum rotation speed and/or a maximum intake air amount of the engine.
Meanwhile, the invention also provides a readable storage medium, wherein at least one instruction or program is stored on the readable storage medium, and the instruction or program is loaded by the processor and executed to realize the response method.
Compared with the prior art, the response method of the sliding sleeve type variable intake lift driving stage fault keeps the intake lift switching of each cylinder consistent as much as possible under the condition that the driving stage fault does not influence the lift consistency of each cylinder and on the premise of ensuring that engine parts are not damaged, so that the output torque of the engine is smooth, the monitoring feeling of a driver is improved, and the torque of the engine is limited under the condition that the lift consistency cannot be realized, so that the engine parts are protected as much as possible and the engine parts are prevented from being damaged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1a is a schematic diagram showing the relationship between the fluctuation range of the intake air amount and the engine speed when the intake lifts of the cylinders are inconsistent;
FIG. 1b is a schematic diagram of engine intake air amount versus engine torque and knock/pre-ignition propensity when intake lift is not consistent for each cylinder;
FIG. 2 is a flow chart of a method of responding to a fault in a slip sleeve variable intake lift drive stage according to an embodiment of the present invention;
FIG. 3 is a block diagram of a system for responding to a fault of a sliding sleeve type variable intake lift driving stage according to an embodiment of the invention;
FIG. 4 is a graph comparing intake air quantity and engine torque for a cylinder with a low lift drive stage failure of the prior art and an embodiment of the present invention;
FIG. 5 is a graph comparing intake air quantity and engine torque for a cylinder with a prior art and an embodiment of the present invention when a large lift drive stage failure occurs;
FIG. 6 is a graph comparing intake air quantity and engine torque for a prior art and an embodiment of the present invention when a small lift drive stage failure occurs for two cylinders;
FIG. 7 is a graph comparing intake air quantity and engine torque for a prior art and an embodiment of the present invention when a large lift drive stage failure occurs for two cylinders.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The invention is capable of other embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the general spirit of the invention. It should be noted that, in the following embodiments, technical features may be combined with each other without conflict.
Furthermore, it will be understood that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer program instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.
Example one
In order to solve the problems of unsmooth output torque of an engine and aggravated tendency of knocking, pre-ignition and fire catching caused by uneven air input of each cylinder when the sliding sleeve type variable intake lift has the driving level fault in the prior art, the invention provides a response method of the sliding sleeve type variable intake lift driving level fault, wherein the response method comprises the following steps:
when a driving level fault occurs, if the lift of each cylinder cannot be kept consistent due to the driving level fault, torque limitation is carried out on the engine, lift change is forbidden in the current driving cycle, and if the lift of each cylinder can be kept consistent, the lift of each cylinder is switched to the actual lift of the fault cylinder corresponding to the driving level fault, and the lift change is forbidden in the current driving cycle.
Specifically, when a driving stage fault occurs and the lift of each cylinder can be kept consistent, if a fault cylinder has a small-lift fault, the actual lift of the fault cylinder is a large lift and the fault cylinder cannot be switched from the large lift to the small lift, and the lift of the non-fault cylinder is switched to the large lift; if the fault cylinder has a large lift fault, the actual lift of the fault cylinder is a small lift and the fault cylinder cannot be switched from the small lift to the large lift, and at the moment, the lifts of the non-fault cylinders are all switched to the small lift.
Fig. 4 to 7 are graphs comparing the intake air amount and the engine torque when the driving stage failure occurs in the cylinder according to the prior art and the embodiment of the present invention.
When a driving stage of one cylinder (first cylinder) in a four-cylinder engine has a small lift fault, that is, the fault cylinder (first cylinder) cannot be switched from a large lift to a small lift, according to the prior art, the fault cylinder (first cylinder) is always in the large lift, and the rear three cylinders can be switched to the small lift, as shown in fig. 4(a), at this time, the air intake amount of the fault cylinder (first cylinder) is large, the air intake amounts of the other three cylinders are small, and the torque output of the engine is not smooth. For the same situation, on the premise that the driving level fault does not affect the lift consistency of each cylinder and does not damage engine parts, the lift of three cylinders without the driving level fault is switched to the large lift (the lift of the three cylinders is consistent with the actual lift of the fault cylinder), so that the air inflow of the four cylinders is consistent, and the smoothness of the torque output of the engine is improved, as shown in fig. 4 (b).
When a large lift fault occurs in a driving stage of one cylinder (fourth cylinder) in a four-cylinder engine, that is, the faulty cylinder (fourth cylinder) cannot be switched from a small lift to a large lift, according to the prior art, the faulty cylinder (fourth cylinder) is always in the small lift, and the other three cylinders can be switched to the large lift, as shown in fig. 5(a), at this time, the intake air amount of the first three cylinders is large, and the intake air amount of the faulty cylinder (fourth cylinder) is small, so that the torque output of the engine is not smooth. For the same situation, on the premise that the driving stage fault does not affect the lift consistency of each cylinder and does not damage engine parts, the lift of the first three cylinders without the driving stage fault is switched to the small lift (the lift of the first three cylinders is consistent with the actual lift of the fault cylinder), so that the air inflow of the four cylinders is consistent, and the smoothness of the torque output of the engine is improved, as shown in fig. 5 (b).
When a small-lift fault occurs in a driving stage of one cylinder (a first cylinder and a second cylinder) in a four-cylinder engine, namely the faulty cylinder (the first cylinder and the second cylinder) cannot be switched from a large lift to a small lift, according to the prior art, the faulty cylinder (the first cylinder and the second cylinder) is always in the large lift, and a third cylinder and a fourth cylinder can be switched to the small lift, as shown in fig. 6(a), at this time, the air intake amount of the faulty cylinder (the first cylinder and the second cylinder) is large, and the air intake amount of the third cylinder and the fourth cylinder is small, so that the torque output of the engine is not smooth. Under the same condition, on the premise that the driving stage fault does not affect the consistency of the lift of each cylinder and does not damage engine parts, the lift of the third cylinder and the lift of the fourth cylinder without the driving stage fault are switched to the large lift (the lift of the third cylinder and the lift of the fourth cylinder are consistent with the actual lift of the fault cylinder), so that the air inflow of the four cylinders is consistent, and the smoothness of the torque output of the engine is improved, as shown in fig. 6 (b).
When a large-lift fault occurs in a driving stage of one cylinder (the first cylinder and the third cylinder) in a four-cylinder engine, that is, the faulty cylinder (the first cylinder and the third cylinder) cannot be switched from a small lift to a large lift, according to the prior art, the faulty cylinder (the first cylinder and the third cylinder) is always in the small lift, and the second cylinder and the fourth cylinder can be switched to the large lift, as shown in fig. 7(a), at this time, the intake air amount of the second cylinder and the fourth cylinder is large, and the intake air amount of the faulty cylinder (the first cylinder and the third cylinder) is small, so that the torque output of the engine is not smooth. Under the same condition, on the premise that the driving stage fault does not affect the consistency of the lift of each cylinder and does not damage engine parts, the lift of the second cylinder and the lift of the fourth cylinder without the driving stage fault are switched to the small lift (the lift of the second cylinder and the lift of the fourth cylinder are consistent with the actual lift of the fault cylinder), so that the air inflow of the four cylinders is consistent, and the smoothness of the torque output of the engine is improved, as shown in fig. 7 (b).
The principle of the embodiment of the invention is mainly that whether the condition that the air inlet lift of each cylinder is inconsistent is judged based on the drive level diagnosis result of the variable air inlet lift, if the lift is inconsistent, the air inlet dispersion of each cylinder is large, the service life and the driving experience of engine parts can be influenced, and therefore, on the premise of not damaging the engine parts, the air inlet lift of each cylinder is switched into a consistent state as far as possible, so that the output torque of the engine is smooth, and the engine parts are protected; and under the condition that the lift can not be consistent, the torque of the engine is limited, and engine parts are protected as much as possible to prevent damage.
Example two
On the basis of the first embodiment, the embodiment further describes specific implementation steps of a response method for a slip sleeve type variable intake lift driving level fault.
Specifically, the response method is shown in fig. 2, and includes the following specific steps:
step S1, after the current driving cycle starts, judging whether the current driving cycle has lift driving level faults, if yes, entering step S2, otherwise responding to the lift request;
step S2, judging whether the driving level fault can cause the lift of each cylinder to be inconsistent, if so, going to step S3, otherwise, going to step S4;
step S3, limiting the engine torque, and the process advances to step S6;
step S4, identifying the actual lift of the fault cylinder with the driving stage fault, and triggering a driving stage fault lift consistency request;
step S5, switching the lift of each cylinder to the actual lift of the fault cylinder corresponding to the driving level fault;
in step S6, the lift change is prohibited in the current driving cycle until the current driving cycle is finished.
The engine control system diagnoses the variable intake lift driving stage of each cylinder, if the fault is identified, further identifies and judges the type of the driving stage fault, and in step S2, when the number N of the fault cylinders with the driving stage fault occurs1Total number of cylinders N of cylinder0Satisfies the condition of 1. ltoreq. N1＜N0And when the driving stage fault is a short-ground fault, an open-circuit fault or a short power failure, judging that the driving stage fault can cause inconsistent lift of each cylinder.
In step S3, the engine is torque-limited by limiting the maximum rotation speed of the engine and/or the maximum intake air amount (limiting the throttle opening, supercharger, etc.).
Based on the response method of the present embodiment, the present embodiment further provides a response system for a fault of the sliding sleeve type variable intake lift driving stage, as shown in fig. 3, including:
the first judgment unit is used for judging whether the current driving cycle has lift driving level faults or not, if so, the lift request response unit is triggered, and if not, the second judgment unit is triggered;
the second judgment unit is used for judging whether the lift of each cylinder is inconsistent due to the driving level fault, if so, the engine torque control unit is triggered, and if not, the fault cylinder lift identification unit is triggered;
an engine torque control unit for performing torque limitation on the engine;
the fault cylinder lift identification unit is used for identifying the actual lift of the fault cylinder with the driving stage fault and triggering a driving stage fault lift consistency request;
and the lift request responding unit is used for responding to a normal lift request or responding to the driving level fault lift consistency request, switching the lift of each cylinder to the actual lift of the fault cylinder corresponding to the driving level fault, and forbidding responding to the lift change request.
Based on the two embodiments, the embodiment of the present invention further provides a readable storage medium, where at least one instruction or program is stored, and the instruction or program is loaded by the processor and executes the response method, which can implement the first embodiment or the second embodiment.
These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the programs, which execute via the processor of the computer or other programmable data processing apparatus, implement the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer programs may also be stored in a readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner. The computer program may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the computer program which executes on the computer, other programmable apparatus or other devices implements the functions/acts specified in the flowchart and/or block diagram block or blocks.
The present invention has been described in detail with reference to the specific embodiments, which are merely preferred embodiments of the present invention, and the present invention is not limited to the above embodiments. Equivalent alterations and modifications of the above-described elements by those skilled in the art should be considered to be within the scope of the invention as hereinafter claimed, without departing from the principles of the invention.
Claims (9)
1. When the driving level fault occurs, if the driving level fault causes that the lift of each cylinder cannot be kept consistent, torque limitation is carried out on an engine and lift change is forbidden in the current driving cycle, and if the lift of each cylinder can be kept consistent, the lift of each cylinder is switched to the actual lift of the faulty cylinder corresponding to the driving level fault and the lift change is forbidden in the current driving cycle.
2. The method for responding to the failure of the slipping sleeve type variable intake lift driving stage according to claim 1, wherein when the driving stage failure occurs and the lift of each cylinder can be kept consistent, if the failure cylinder has a small lift failure, the actual lift of the failure cylinder is a large lift and the failure cylinder cannot be switched from the large lift to the small lift, and the lift of the non-failure cylinder is switched to the large lift; if the fault cylinder has a large lift fault, the actual lift of the fault cylinder is a small lift and the fault cylinder cannot be switched from the small lift to the large lift, and at the moment, the lifts of the non-fault cylinders are all switched to the small lift.
3. The method for responding to the fault of the sliding sleeve type variable intake lift driving level as claimed in claim 1, is characterized in that the method comprises the following steps:
step S1, after the current driving cycle starts, judging whether the current driving cycle has lift driving level faults, if yes, entering step S2, otherwise responding to the lift request;
step S2, judging whether the driving level fault can cause the lift of each cylinder to be inconsistent, if so, going to step S3, otherwise, going to step S4;
step S3, limiting the engine torque, and the process advances to step S6;
step S4, identifying the actual lift of the fault cylinder with the driving stage fault, and triggering a driving stage fault lift consistency request;
step S5, switching the lift of each cylinder to the actual lift of the fault cylinder corresponding to the driving level fault;
in step S6, the lift change is prohibited in the current driving cycle until the current driving cycle is finished.
4. The method for responding to a malfunction of a slipping sleeve type variable intake lift driving stage according to claim 3, wherein in step S2, the number N of malfunctioning cylinders when a driving stage malfunction occurs is1Total number of cylinders N of cylinder0Satisfies the condition of 1. ltoreq. N1＜N0And when the driving stage fault is a short-ground fault, an open-circuit fault or a short power failure, judging that the driving stage fault can cause inconsistent lift of each cylinder.
5. The method for responding to a malfunction of a slipping sleeve type variable intake lift driving stage according to claim 1, wherein in step S3, the engine is torque-limited by limiting the maximum rotation speed and/or the maximum intake air amount of the engine.
6. A system for responding to a failure in a slipping sleeve type variable intake lift drive stage, comprising:
the first judgment unit is used for judging whether the current driving cycle has lift driving level faults or not, if so, the lift request response unit is triggered, and if not, the second judgment unit is triggered;
the second judgment unit is used for judging whether the lift of each cylinder is inconsistent due to the driving level fault, if so, the engine torque control unit is triggered, and if not, the fault cylinder lift identification unit is triggered;
an engine torque control unit for performing torque limitation on the engine;
the fault cylinder lift identification unit is used for identifying the actual lift of the fault cylinder with the driving stage fault and triggering a driving stage fault lift consistency request;
and the lift request responding unit is used for responding to a normal lift request or responding to the driving level fault lift consistency request, switching the lift of each cylinder to the actual lift of the fault cylinder corresponding to the driving level fault, and forbidding responding to the lift change request.
7. The system of claim 6, wherein the number of cylinders N that fail when a drive stage failure occurs is N1Total number of cylinders N of cylinder0Satisfies the condition of 1. ltoreq. N1＜N0And when the driving stage fault is a short-ground fault, an open-circuit fault or a short-power fault, the second judging unit judges that the driving stage fault can cause inconsistent lift of each cylinder.
8. The slip sleeve variable intake lift drive level fault response system of claim 6, wherein the engine torque control unit torque limits the engine by limiting a maximum speed of rotation of the engine and/or a maximum amount of intake air.
9. A readable storage medium, characterized in that it has stored thereon at least one instruction or program, which is loaded by the processor and executes a response method enabling to implement any of the claims 1 to 5.
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| CN2021103475394 | 2021-03-31 | ||
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0463922A (en) * | 1990-06-30 | 1992-02-28 | Mazda Motor Corp | Engine output control device |
| CN1590740A (en) * | 2003-06-24 | 2005-03-09 | 日立优喜雅汽车配件有限公司 | Fail-safe control apparatus for internal combustion engine equipped with variable valve characteristic mechanism and method thereof |
| CN101025100A (en) * | 2006-02-22 | 2007-08-29 | 本田技研工业株式会社 | Default device of actuator for variable lift valve operating mechanism |
| JP2009299503A (en) * | 2008-06-10 | 2009-12-24 | Toyota Motor Corp | Failure determination device for variable valve mechanism and control device for internal combustion engine equipped with the same |
| CN102465777A (en) * | 2010-11-18 | 2012-05-23 | 上海汽车集团股份有限公司 | Fault controlling method for continuous variable valve lift mechanism of engine |
| CN104819063A (en) * | 2014-01-31 | 2015-08-05 | 通用汽车环球科技运作有限责任公司 | System and method for measuring valve lift and for detecting a fault in a valve actuator based on the valve lift |
-
2021
- 2021-06-25 CN CN202110708224.8A patent/CN113530632A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0463922A (en) * | 1990-06-30 | 1992-02-28 | Mazda Motor Corp | Engine output control device |
| CN1590740A (en) * | 2003-06-24 | 2005-03-09 | 日立优喜雅汽车配件有限公司 | Fail-safe control apparatus for internal combustion engine equipped with variable valve characteristic mechanism and method thereof |
| CN101025100A (en) * | 2006-02-22 | 2007-08-29 | 本田技研工业株式会社 | Default device of actuator for variable lift valve operating mechanism |
| JP2009299503A (en) * | 2008-06-10 | 2009-12-24 | Toyota Motor Corp | Failure determination device for variable valve mechanism and control device for internal combustion engine equipped with the same |
| CN102465777A (en) * | 2010-11-18 | 2012-05-23 | 上海汽车集团股份有限公司 | Fault controlling method for continuous variable valve lift mechanism of engine |
| CN104819063A (en) * | 2014-01-31 | 2015-08-05 | 通用汽车环球科技运作有限责任公司 | System and method for measuring valve lift and for detecting a fault in a valve actuator based on the valve lift |
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Application publication date: 20211022 |