CN113903157B - Valve timing monitoring method and device, vehicle and storage medium - Google Patents
Valve timing monitoring method and device, vehicle and storage medium Download PDFInfo
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- CN113903157B CN113903157B CN202111150710.9A CN202111150710A CN113903157B CN 113903157 B CN113903157 B CN 113903157B CN 202111150710 A CN202111150710 A CN 202111150710A CN 113903157 B CN113903157 B CN 113903157B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/022—Chain drive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention relates to the technical field of vehicles, and particularly discloses a valve timing monitoring method, which comprises the steps of acquiring real-time valve timing T of an engine n The method comprises the steps of carrying out a first treatment on the surface of the Comparing the real-time air distribution phase T n And preset valve timing T 0 If T n ‑T 0 ≥ΔT 1 The method comprises the steps of carrying out a first treatment on the surface of the A first prompt is issued to alert the driver to replace the chain as soon as possible. The gas distribution phase monitoring method can realize the automatic monitoring of the gas distribution phase and give out warning, so that a user does not need to remember the maintenance period at any time, the adaptability is wider, the fault tolerance is higher, the engine can be ensured to ensure sufficient dynamic performance at any time, and the power requirement of the user is met.
Description
Technical Field
The present invention relates to the field of vehicle technologies, and in particular, to a method and apparatus for monitoring valve timing, a vehicle, and a storage medium.
Background
In an engine adopting a chain transmission valve mechanism, the long-time use of the chain transmission valve mechanism inevitably causes the growth of chain links, and then causes the change of valve timing angles, so that the valve opening and closing time is changed, and the power performance of the engine is affected.
The prior art cannot accurately and efficiently monitor the valve timing error caused by chain link growth, and can only regularly maintain the chain by prescribing the maintenance period of the chain. However, because the usage conditions of each user are inconsistent, for vehicles used under a heavy load condition for a long time, the chain may be deformed greatly too early before maintenance, so that the power performance of the engine is reduced, and the normal operation of the engine may be affected by serious conditions.
Disclosure of Invention
The invention aims at: a method, a device, a vehicle and a storage medium for monitoring valve timing are provided, so as to solve the problem that the valve timing error cannot be accurately monitored in the related technology, and further the performance of an engine is affected.
In one aspect, the present invention provides a valve timing monitoring method, including:
acquiring real-time valve timing T of engine n ；
Comparing the real-time air distribution phase T n And preset valve timing T 0 Wherein, the valve timing T is preset 0 The valve timing of the engine is the valve timing of the engine when the engine is used for the first time;
if T n -T 0 ≥ΔT 1 ；
A first prompt is sent out for reminding the driver of changing the chain, delta T 1 An upper threshold value that can be used for the chain.
As a preferred technical solution of the valve timing monitoring method, if Δt 2 ≤T n -T 0 ＜ΔT 1 The method comprises the steps of carrying out a first treatment on the surface of the A second prompt is sent out, and the second prompt is used for reminding a driver to overhaul the chain, delta T 2 An upper threshold for the chain to be serviced.
As a preferable technical scheme of the gas distribution phase monitoring method, if T n -T 0 ＜ΔT 2 The method comprises the steps of carrying out a first treatment on the surface of the A third prompt is issued for reminding the driver that the chain is able to be used normally.
As the preferable technical scheme of the gas distribution phase monitoring method, the first prompt comprises first color light, the second prompt comprises second color light, and the colors of the first color light and the second color light are different.
As a preferred technical scheme of the valve timing monitoring method, the acquiring the real-time valve timing of the engine includes:
collecting real-time phase of a cam shaft and real-time phase of a crank shaft of an engine;
acquiring a relation between a real-time gas distribution phase and a real-time phase of the camshaft and a real-time phase of the crankshaft;
and inquiring the relation to obtain the real-time gas distribution phase based on the real-time phase of the camshaft and the real-time phase of the crankshaft.
The invention also provides a valve timing monitoring device, comprising:
the real-time gas distribution phase acquisition module is used for acquiring startingReal-time valve timing T of machine n ；
A comparison module for comparing the real-time gas distribution phase T n And preset valve timing T 0 ；
Prompt module for at T n -T 0 ≥ΔT 1 A first prompt is issued.
As a preferred technical solution of the valve timing monitoring device, the real-time valve timing acquisition module includes:
the camshaft phase acquisition unit is used for acquiring the real-time phase of the camshaft of the engine;
the crankshaft phase acquisition unit is used for acquiring the real-time phase of a crankshaft of the engine;
and the real-time gas distribution phase confirmation unit is used for inquiring a relational expression of the real-time gas distribution phase, the real-time phase of the camshaft and the real-time phase of the crankshaft based on the real-time phase of the camshaft and the real-time phase of the crankshaft to obtain the real-time gas distribution phase.
As a preferred solution of the valve timing monitoring device, the prompting module is further configured to, at Δt 2 ≤T n -T 0 ＜ΔT 1 When the first prompt is sent out; at T n -T 0 ＜ΔT 2 And sending out a third prompt.
The present invention also provides a vehicle including:
a driving controller;
the engine comprises a crankshaft, a crankshaft sprocket and a crankshaft signal panel, a camshaft sprocket and a camshaft signal panel, a middle sprocket, a first chain and a second chain, wherein the crankshaft sprocket and the crankshaft signal panel are arranged on the crankshaft, the camshaft is arranged at intervals with the crankshaft, the camshaft sprocket and the camshaft signal panel are arranged on the camshaft, the middle sprocket is arranged between the crankshaft and the camshaft, the middle sprocket comprises a first gear and a second gear which are coaxially and fixedly connected, the first chain is connected with the first gear and the crankshaft sprocket, and the second chain is connected with the second gear and the camshaft sprocket;
the crank phase sensor is used for detecting the position of the crank signal panel and sending the position of the crank signal panel to the driving controller;
the cam shaft phase sensor is used for detecting the position of the cam shaft signal panel and sending the position of the cam shaft signal panel to the driving controller;
the prompting device is connected with the driving controller and is used for sending out a prompt;
a memory for storing one or more programs;
and when the one or more programs are executed by the driving controller, the driving controller controls the vehicle to implement the valve timing monitoring method in any scheme.
The present invention also provides a storage medium having stored thereon a computer program which, when executed by a vehicle controller, causes a vehicle to implement the valve timing monitoring method described in any of the above schemes.
The beneficial effects of the invention are as follows:
the invention provides a valve timing monitoring method, a device, a vehicle and a storage medium, wherein the valve timing monitoring method comprises the following steps: acquiring real-time valve timing T of engine n The method comprises the steps of carrying out a first treatment on the surface of the Comparing the real-time air distribution phase T n And preset valve timing T 0 If T n -T 0 ≥ΔT 1 The method comprises the steps of carrying out a first treatment on the surface of the A first prompt is issued to alert the driver to replace the chain as soon as possible. The gas distribution phase monitoring method can realize the automatic monitoring of the gas distribution phase and give out warning, so that a user does not need to remember the maintenance period at any time, the adaptability is wider, the fault tolerance is higher, the engine can be ensured to ensure sufficient dynamic performance at any time, and the power requirement of the user is met.
Drawings
FIG. 1 is a flow chart of a valve timing monitoring method in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a valve timing monitor according to an embodiment of the present invention;
FIG. 3 is a schematic view of a vehicle according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an engine of a vehicle in an embodiment of the present invention.
In the figure:
210. the real-time gas distribution phase acquisition module; 220. a comparison module; 230. a prompting module;
310. a driving controller; 320. an engine; 330. a prompting device; 340. a crankshaft phase sensor; 350. a camshaft phase sensor;
1. a cam shaft; 2. a camshaft signal panel; 3. a second chain; 4. a middle sprocket; 5. a first chain; 6. a crankshaft sprocket; 7. a crankshaft; 8. a crankshaft signal panel; 9. camshaft sprocket.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Example 1
Fig. 1 is a flowchart of a valve timing monitoring method according to a first embodiment of the present invention, where the method may be adapted to monitor valve timing of an engine, and the method may be performed by a valve timing monitoring device, and the device may be implemented by software and/or hardware and integrated in a vehicle, and specifically the method includes the following steps:
s110: acquiring real-time valve timing T of engine n 。
Specifically, in the present embodiment, the real-time valve timing T of the engine is acquired n Comprising the following steps:
s1101: and collecting the real-time phase of a cam shaft and the real-time phase of a crank shaft of the engine.
The position of the camshaft signal disc can be monitored by a camshaft phase sensor to obtain the real-time phase of the camshaft. The position of the crankshaft signal disc can be monitored by a crankshaft phase sensor to obtain the crankshaft real-time phase.
S1102: acquiring a relation between a real-time gas distribution phase and a real-time phase of a cam shaft and a real-time phase of a crank shaft; based on the real-time phase of the camshaft and the real-time phase of the crankshaft, the real-time valve timing is obtained by inquiring the relational expression.
The relational expression is predetermined, and the real-time valve timing of the engine may be determined based on the real-time phase of the camshaft and the real-time phase of the crankshaft, and the relational expression may be a mathematical expression or a deep learning model, which is not limited in this embodiment. Specifically, if the relational expression is a mathematical expression, the real-time phase of the camshaft and the real-time phase of the crankshaft are substituted into the mathematical expression to obtain the corresponding real-time gas distribution phase, if the relational expression is a deep learning model, the real-time phase of the camshaft and the real-time phase of the crankshaft are input into the pre-trained deep learning model, and the result is output by the deep learning model and is used as the real-time gas distribution phase.
It should be noted that there are many ways to determine the real-time valve timing of the engine, and in other embodiments, the real-time valve timing of the engine may be obtained by other methods, such as the method for detecting the valve timing of the engine disclosed in the earlier patent application CN 201510915761.4.
S120: comparing the real-time air distribution phase T n And preset valve timing T 0 。
Wherein, the valve timing T is preset 0 The valve timing of the engine when the engine is used for the first time can be measured and stored in the driving controller when the engine is used for the first time.
If T n -T 0 ≥ΔT 1 The method comprises the steps of carrying out a first treatment on the surface of the S130 is performed; if DeltaT 2 ≤T n -T 0 ＜ΔT 1 The method comprises the steps of carrying out a first treatment on the surface of the S140 is performed; if T n -T 0 ＜ΔT 2 The method comprises the steps of carrying out a first treatment on the surface of the S150 is performed.
Wherein DeltaT 1 For the upper threshold value that the chain can use, when T n -T 0 ≥ΔT 1 When the chain is not used, the chain needs to be replaced, and the delta T is not used 2 Upper threshold value for chain maintenance, when T n -T 0 ≥ΔT 2 When the chain is used, the chain can be used, but the chain needs to be overhauled; when T is n -T 0 ＜ΔT 2 When the chain is used, the chain can be normally used.
S130, sending out a first prompt. The first prompt is for reminding the driver to replace the chain.
And S140, sending out a second prompt. The second prompt is used for reminding a driver to overhaul the chain.
S150: a third prompt is issued. The third prompt is used for reminding the driver that the chain can be normally used.
The working state of the engine at this time can be judged by comparing the real-time valve timing of the engine with the valve timing when the engine is first used. When T is n -T 0 ≥ΔT 1 And the real-time valve timing of the engine can influence the dynamic property of the engine, and a driver can be reminded of timely replacing the timing chain through a first prompt. When DeltaT 2 ≤T n -T 0 ＜ΔT 1 The real-time distribution phase of the engine can ensure that the engine continues to operate, but the power performance is reduced compared with that of the engine in normal operation, and the second prompt can prompt a driver to overhaul in time. When T is n -T 0 ＜ΔT 2 The real-time distribution phase position of the engine can ensure the normal operation of the engine, and the third prompt can prompt a driver that the distribution phase position of the engine is normal.
Wherein, first suggestion includes first colour light, and the second suggestion includes second colour light, and the colour of first colour light and second colour light is different. For example, the first color light may be red, the second color light may be yellow, and further, the third color light may be green. And the driver is correspondingly reminded through color distinction. In particular, the lamp may be mounted on an instrument panel. In other embodiments, the first prompt, the second prompt and the third prompt may be text prompts, and the text may be displayed on a liquid crystal screen of the console.
Wherein DeltaT 1 And DeltaT 2 May be a parameter stored in advance in the driving controller, when Δt 1 And DeltaT 2 When the parameter is a parameter stored in the driving controller in advance, the delta T is calculated 1 And DeltaT 2 May be empirical data obtained through a number of preliminary experiments.
ΔT 1 And DeltaT 2 Can also be determined according to the working condition of the vehicle, when delta T 1 And DeltaT 2 When determining according to the working condition of the vehicleThe method is characterized by comprising the following steps:
1) And collecting working condition information of the engine after the engine is started for the first time, wherein the working condition information of the engine is a large load working condition and a non-large load working condition.
The working condition information of the engine is acquired by acquiring the output torque and the accelerator opening of the engine, when the output torque of the engine is larger than the set torque and the accelerator opening is larger than the set opening, the engine is confirmed to be in a large load working condition, and when the output torque of the engine is not larger than the set torque or the accelerator opening is not larger than the set opening, the engine is confirmed to be in a non-large load working condition.
2) Counting the duty ratio of the engine under a large load working condition, wherein the duty ratio of the large load working condition is equal to the quotient of the time of the engine under the large load working condition and the total running time of the engine;
3) Inquiring the valve timing difference delta T from a relation diagram of the large load working condition duty ratio and the first valve timing difference based on the large load working condition duty ratio 1 . Querying a valve timing difference delta T from a relation diagram of the duty ratio of the heavy load working condition and the second valve timing difference 2 . The relation diagram of the load working condition duty ratio and the first valve timing difference value and the relation diagram of the large load working condition duty ratio and the second valve timing difference value can be obtained through a large number of tests in the earlier stage.
Thus, deltaT can be determined 1 And DeltaT 2 Specific values. It can be understood that the duty ratio of the heavy load condition can visually display the working state of the vehicle engine, and in order to ensure the driving safety, when the duty ratio of the heavy load condition is relatively large, the corresponding delta T is calculated 1 And DeltaT 2 Relatively small because the looseness of the timing chain is relatively large when the vehicle is operated under a heavy load condition for a long period of time if the DeltaT is maintained 1 And DeltaT 2 The value of (2) is constant, and when the vehicle works under the heavy load working condition for a long time, the probability of the failure of the timing chain is relatively high, so that the corresponding delta T is required to be set according to the heavy load working condition duty ratio of the vehicle engine 1 And DeltaT 2 。
The valve timing monitoring method provided by the embodiment obtains the real-time valve timing T of the engine n The method comprises the steps of carrying out a first treatment on the surface of the Comparing real-time valve timingT n And preset valve timing T 0 If T n -T 0 ≥ΔT 1 The method comprises the steps of carrying out a first treatment on the surface of the A first prompt is sent to remind the driver to replace the chain as soon as possible, if delta T 2 ≤T n -T 0 ＜ΔT 1 The second prompt is sent out to remind the driver to maintain the chain as soon as possible, and the valve timing monitoring method can realize automatic monitoring of the valve timing and give out warning, so that a user does not need to remember the maintenance period at any time, the adaptability is wider, the fault tolerance is higher, the engine can be guaranteed to be full in real time, and the power requirement of the user is met.
Example two
Fig. 2 is a block diagram of a valve timing monitoring device according to a second embodiment of the present invention, where the device may execute the valve timing monitoring method according to the foregoing embodiment, and specifically the device includes a real-time valve timing acquisition module 210, a comparison module 220, and a prompt module 230.
Wherein, the real-time valve timing acquisition module 210 is configured to acquire a real-time valve timing T of an engine n The method comprises the steps of carrying out a first treatment on the surface of the The comparison module 220 is used for comparing the real-time valve timing T n And preset valve timing T 0 The method comprises the steps of carrying out a first treatment on the surface of the The prompting module is used for prompting the user to be at T n -T 0 ≥ΔT 1 A first prompt is issued.
Optionally, the prompting module 230 is further configured to, at Δt 2 ≤T n -T 0 ＜ΔT 1 When the first prompt is sent out; at T n -T 0 ＜ΔT 2 And sending out a third prompt.
In the valve timing monitoring device provided in this embodiment, the real-time valve timing T of the engine is obtained by the real-time valve timing obtaining module 210 n The method comprises the steps of carrying out a first treatment on the surface of the Comparing the real-time valve timing T by the comparison module 220 n And preset valve timing T 0 The prompt module 230 is configured to, at T n -T 0 ≥ΔT 1 When a first prompt is sent to remind the driver to replace the chain as soon as possible, the prompt module 230 is also used for detecting the delta T 2 ≤T n -T 0 ＜ΔT 1 And when the chain is maintained, a second prompt is sent out to remind the driver of maintaining the chain as soon as possible. The gas distribution phase is monitoredThe measuring device can realize that the valve timing is monitored automatically and warning is sent out, so that a user does not need to remember the maintenance period at any time, the adaptability is wider, the fault tolerance is higher, the engine can be guaranteed to be full in real time, and the power requirement of the user is met.
Optionally, the real-time valve timing acquisition module 210 includes:
and the camshaft phase acquisition unit is used for acquiring the real-time phase of the camshaft of the engine.
And the crankshaft phase acquisition unit is used for acquiring the real-time phase of the crankshaft of the engine.
And the real-time gas distribution phase confirmation unit is used for inquiring a relational expression of the real-time gas distribution phase, the real-time phase of the camshaft and the real-time phase of the crankshaft based on the real-time phase of the camshaft and the real-time phase of the crankshaft to obtain the real-time gas distribution phase.
Example III
Fig. 3 is a structural diagram of a vehicle according to a third embodiment of the present invention, and fig. 4 is a schematic structural diagram of an engine 320 of the vehicle according to the third embodiment of the present invention. The vehicle includes a drive controller 310, an engine 320, a reminder 330, a crank phase sensor 340, and a camshaft phase sensor 350. Among other things, the drive controller 310, the engine 320, the reminder 330, the crank phase sensor 340, and the camshaft phase sensor 350 may be connected via a bus or other means.
As shown in fig. 4, the engine 320 includes a crankshaft, a crankshaft sprocket 6 and a crankshaft signal plate 8 provided to the crankshaft, a camshaft 1 provided to be spaced apart from the crankshaft, a camshaft sprocket 9 and a camshaft signal plate 2 provided to the camshaft 1, an intermediate sprocket 4 provided between the crankshaft 7 and the camshaft 1, and a first chain 5 and a second chain 3, the intermediate sprocket 4 including a first gear and a second gear coaxially and fixedly connected, the first chain 5 connecting the first gear and the crankshaft sprocket 6, the second chain 3 connecting the second gear and the camshaft sprocket 9; a crank phase sensor 340 for monitoring the position of the crank signal disc 8, i.e. the crank real-time phase, and transmitting it to the driving controller 310; the camshaft phase sensor 350 is used for monitoring the position of the camshaft signal panel 2, namely, the real-time phase of the camshaft, and sending the real-time phase to the driving controller 310; a memory for storing one or more programs; the one or more programs, when executed by the vehicle controller 310, cause the vehicle controller 310 to control the vehicle to implement the valve timing monitoring method as in the embodiments described above. The prompting device 330 may be one or more of a dashboard, a buzzer, and a tri-color lamp.
The memory is used as a computer readable storage medium for storing a software program, a computer executable program and modules, such as program instructions/modules corresponding to the valve timing monitoring method in the embodiment of the invention. The driving controller 310 executes various functional applications and data processing of the vehicle by running software programs, instructions and modules stored in the memory, that is, implements the valve timing monitoring method of the above embodiment.
The memory mainly comprises a memory program area and a memory data area, wherein the memory program area can store an operating system and at least one application program required by functions; the storage data area may store data created according to the use of the terminal, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory may further include memory remotely located with respect to the ride control 310, which may be connected to the vehicle via a network. Examples of such networks include, but are not limited to, the internet, local area networks, mobile communication networks, and combinations thereof.
The vehicle provided in the fourth embodiment of the present invention belongs to the same inventive concept as the valve timing monitoring method provided in the foregoing embodiment, and technical details not described in detail in this embodiment may be referred to the foregoing embodiment, and this embodiment has the same beneficial effects of executing the valve timing monitoring method.
Example IV
The fourth embodiment of the present invention further provides a storage medium, on which a computer program is stored, which when executed by a driving controller, implements the valve timing monitoring method according to the above embodiment of the present invention.
Of course, the storage medium containing the computer executable instructions provided by the embodiment of the invention is not limited to the operations in the valve timing monitoring method, but can also execute the related operations in the valve timing monitoring method provided by the embodiment of the invention, and has corresponding functions and beneficial effects.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for causing a computer device (which may be a robot, a personal computer, a server, or a network device, etc.) to execute the valve timing monitoring method according to the embodiments of the present invention.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A valve timing monitoring method, comprising:
acquiring real-time valve timing T of engine n ；
Comparing the real-time air distribution phase T n And preset valve timing T 0 Wherein, the valve timing T is preset 0 The valve timing of the engine is the valve timing of the engine when the engine is used for the first time;
if T n -T 0 ≥ΔT 1 ；
A first prompt is sent out for reminding the driver of changing the chain, delta T 1 An upper threshold value usable for a chain;
ΔT 1 can be determined according to the working condition of the vehicle, when delta T 1 When determining according to the working condition of the vehicle, the method specifically comprises the following steps:
1) Collecting working condition information of the engine after the engine is started for the first time, wherein the working condition information of the engine is a large load working condition and a non-large load working condition;
acquiring working condition information of the engine comprises acquiring output torque and accelerator opening of the engine, when the output torque of the engine is larger than the set torque and the accelerator opening is larger than the set opening, confirming that the engine is in a large load working condition, and when the output torque of the engine is not larger than the set torque or the accelerator opening is not larger than the set opening, confirming that the engine is in a non-large load working condition;
2) Counting the duty ratio of the engine under a large load working condition, wherein the duty ratio of the large load working condition is equal to the quotient of the time of the engine under the large load working condition and the total running time of the engine;
3) Inquiring the valve timing difference delta T from a relation diagram of the large load working condition duty ratio and the first valve timing difference based on the large load working condition duty ratio 1 。
2. A valve timing monitoring method according to claim 1, wherein if Δt 2 ≤T n -T 0 ＜ΔT 1 The method comprises the steps of carrying out a first treatment on the surface of the A second prompt is sent out, and the second prompt is used for reminding a driver to overhaul the chain, delta T 2 An upper threshold for the chain to be serviced.
3. A valve timing monitoring method according to claim 2, wherein if T n -T 0 ＜ΔT 2 The method comprises the steps of carrying out a first treatment on the surface of the Then send out a third prompt, whatThe third prompt is used for reminding a driver that the chain can be normally used.
4. A valve timing monitoring method as set forth in claim 2 wherein said first cue comprises a first color light and said second cue comprises a second color light, the colors of the first and second color lights being different.
5. A valve timing monitoring method according to claim 1, wherein acquiring real-time valve timing of an engine comprises:
collecting real-time phase of a cam shaft and real-time phase of a crank shaft of an engine;
acquiring a relation between a real-time gas distribution phase and a real-time phase of the camshaft and a real-time phase of the crankshaft;
and inquiring the relation to obtain the real-time gas distribution phase based on the real-time phase of the camshaft and the real-time phase of the crankshaft.
6. A valve timing monitoring device for performing the valve timing monitoring method of any one of claims 1-5, comprising:
the real-time valve timing acquisition module is used for acquiring the real-time valve timing T of the engine n ；
A comparison module for comparing the real-time gas distribution phase T n And preset valve timing T 0 ；
Prompt module for at T n -T 0 ≥ΔT 1 A first prompt is issued.
7. A valve timing monitoring device as set forth in claim 6 wherein the real-time valve timing acquisition module comprises:
the camshaft phase acquisition unit is used for acquiring the real-time phase of the camshaft of the engine;
the crankshaft phase acquisition unit is used for acquiring the real-time phase of a crankshaft of the engine;
and the real-time gas distribution phase confirmation unit is used for inquiring a relational expression of the real-time gas distribution phase, the real-time phase of the camshaft and the real-time phase of the crankshaft based on the real-time phase of the camshaft and the real-time phase of the crankshaft to obtain the real-time gas distribution phase.
8. A valve timing monitoring device as set forth in claim 6 wherein said prompt module is further configured to provide a signal at Δt 2 ≤T n -T 0 ＜ΔT 1 When the first prompt is sent out; at T n -T 0 ＜ΔT 2 And sending out a third prompt.
9. A vehicle, characterized by comprising:
a driving controller;
the engine comprises a crankshaft, a crankshaft sprocket and a crankshaft signal panel, a camshaft sprocket and a camshaft signal panel, a middle sprocket, a first chain and a second chain, wherein the crankshaft sprocket and the crankshaft signal panel are arranged on the crankshaft, the camshaft is arranged at intervals with the crankshaft, the camshaft sprocket and the camshaft signal panel are arranged on the camshaft, the middle sprocket is arranged between the crankshaft and the camshaft, the middle sprocket comprises a first gear and a second gear which are coaxially and fixedly connected, the first chain is connected with the first gear and the crankshaft sprocket, and the second chain is connected with the second gear and the camshaft sprocket;
the crank phase sensor is used for detecting the position of the crank signal panel and sending the position of the crank signal panel to the driving controller;
the cam shaft phase sensor is used for detecting the position of the cam shaft signal panel and sending the position of the cam shaft signal panel to the driving controller;
the prompting device is connected with the driving controller and is used for sending out a prompt;
a memory for storing one or more programs;
when executed by the drive controller, causes the drive controller to control a vehicle to implement the valve timing monitoring method of any one of claims 1-5.
10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a drive controller, causes a vehicle to implement the valve timing monitoring method of any one of claims 1-5.
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| WO2015035859A1 (en) * | 2013-09-10 | 2015-03-19 | Xie Qingsheng | Regulator for independently and continuously variable valve timing and valve lift |
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