WO2006057153A1 - 建設機械のエンジン保護装置及び保護方法 - Google Patents
建設機械のエンジン保護装置及び保護方法 Download PDFInfo
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- WO2006057153A1 WO2006057153A1 PCT/JP2005/020388 JP2005020388W WO2006057153A1 WO 2006057153 A1 WO2006057153 A1 WO 2006057153A1 JP 2005020388 W JP2005020388 W JP 2005020388W WO 2006057153 A1 WO2006057153 A1 WO 2006057153A1
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- Prior art keywords
- engine
- cylinder
- construction machine
- exhaust temperature
- average value
- Prior art date
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- 238000010276 construction Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 25
- 230000005856 abnormality Effects 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 10
- 230000002123 temporal effect Effects 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 8
- 238000002347 injection Methods 0.000 description 18
- 239000007924 injection Substances 0.000 description 18
- 239000000446 fuel Substances 0.000 description 13
- 238000012806 monitoring device Methods 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/24—Safety devices, e.g. for preventing overload
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/008—Controlling each cylinder individually
-
- 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
Definitions
- the present invention relates to a construction machine such as a hydraulic excavator provided with a multi-cylinder engine, and more particularly to an engine protection apparatus and a protection method for a construction machine for diagnosing a tendency of exhaust temperature of each cylinder of an engine. .
- construction machines such as hydraulic excavators operate a front working machine or a rotating body that also has a force such as a boom, an arm, and a packet by a hydraulic actuator such as a hydraulic cylinder or a hydraulic motor, and these hydraulic actuators
- the pump operates by being supplied with hydraulic oil discharged from a hydraulic pump driven by the engine.
- the engine is equipped with a fuel injection device that sprays fuel into the combustion chamber (cylinder) and a governor mechanism that controls the fuel injection device.
- the engine output is controlled by controlling the fuel injection amount and the injection timing. I'm going to do it.
- the exhaust temperature is detected by a temperature sensor provided in an exhaust manifold or the like, and the number of times the first set temperature that causes thermal fatigue is exceeded by the exhaust temperature force exhaust manifold, The time when the temperature exceeds the second set temperature, which causes the destruction due to oxygen in the exhaust hold higher than the set temperature of 1, is counted, and the number of times the first set temperature is exceeded the specified number of times.
- a method that either outputs a warning or reduces the fuel injection amount or changes the injection timing when the time when the second set temperature is exceeded exceeds a predetermined set time. for example, see Patent Document 1).
- the increase in the exhaust gas temperature is suppressed by either reducing the fuel injection amount or changing the injection timing.
- Patent Document 1 Japanese Patent Laid-Open No. 8-319874 Disclosure of the invention
- an engine mounted on a large hydraulic excavator is a multi-cylinder engine with around 12 cylinders.
- the engine cylinders work in a way that makes up for some. Therefore, as the number of cylinders in the engine increases, the output drop of the entire engine when only one cylinder breaks down almost becomes delayed, and the other engine cylinders become overloaded and become fatal. May cause a malfunction.
- An object of the present invention is to provide an engine protection device for a construction machine capable of diagnosing a tendency of exhaust temperature unique to each cylinder of an engine corresponding to the engine speed and detecting an abnormality in each cylinder of the engine in advance. And providing a protection method.
- the present invention provides a rotational speed detection means for detecting the rotational speed of an engine mounted on a construction machine, and a plurality of exhaust temperatures for detecting the exhaust temperature of each cylinder of the engine.
- the engine speed is detected by the engine speed detecting means, and the exhaust temperature of each cylinder of the engine is detected by the plurality of cylinder temperature detecting means.
- the storage means stores the engine speed and the exhaust temperature of each cylinder in a temporal relationship.
- the control means outputs and displays the display signal calculated based on the storage data of the storage means.
- the control means extracts the exhaust temperature of each cylinder at a predetermined engine speed from the stored data, and this extracted data force averages the exhaust temperature of each cylinder. At least one of the value and the standard deviation is calculated every predetermined time, and trend data representing the change over time of at least one of the average value and the standard deviation of the exhaust temperature of each cylinder is generated and stored. Trend data processing means for outputting a display signal for displaying data to the outside of the construction machine is provided.
- the trend data processing means represents a change with time (change per predetermined time) of at least one of an average value and a standard deviation of the exhaust temperature of each cylinder at a predetermined engine speed.
- the trend data is generated and stored in the storage means, and the trend data is transmitted and displayed, for example, to an office or the like that manages the operating state of the construction machine via information communication such as satellite communication.
- the administrator in the office obtains the normal state of at least one of the average value and standard deviation of the exhaust temperature specific to each cylinder of the engine at a predetermined engine speed, and the average exhaust temperature specific to each engine cylinder. It is possible to diagnose the tendency of at least one of the value and the standard deviation and detect abnormalities in each engine cylinder in advance.
- the display device provided in the cab of the construction machine and the stored data within a predetermined time in accordance with a command from the operator are stored.
- the control means including a snapshot processing means for generating and storing the extracted snapshot and outputting a reproduction display signal for reproducing and displaying the transition of the snapshot to the display device in accordance with a command of an operator.
- the snapshot processing unit when the operation unit is operated with the intention of creating an operator-powered snapshot, stores the stored data within a predetermined time according to the command. A snapshot is extracted and stored (extracted from engine speed and exhaust temperature of each cylinder). Further, when the operator periodically repeats the above operation, the snapshot processing means stores a plurality of snapshots in the storage means. When the operator operates the operation means with the intention of reproducing and displaying the snapshot, the snapshot processing means outputs the reproduction display signal of the snapshot selected according to the command to the display device in the cab. Then, it is reproduced and displayed on the display device.
- the operator in the cab can compare the exhaust temperature of each cylinder of the engine according to the engine speed by looking at the transitions (continuous variation) of the multiple snapshots. Therefore, the operator can compare and diagnose the exhaust temperature specific to each cylinder of the engine corresponding to the engine speed with the previous state, and can detect an abnormality in each cylinder of the engine in advance.
- First abnormality determination means for determining whether a deviation from an average value and a standard deviation of the exhaust temperature of all the cylinders is larger than a predetermined threshold value, and outputting an abnormal signal when the deviation is larger than the predetermined threshold value.
- the engine protection device for a construction machine is provided at predetermined time intervals. It is determined whether a deviation between the calculated average value and standard deviation of the exhaust temperature of each cylinder and the average value and standard deviation of the exhaust temperature of all cylinders is greater than a predetermined threshold value. When the value is larger than a predetermined threshold value, second abnormality determination means for determining the type of abnormality and outputting an abnormality signal is further provided.
- the present invention provides an engine protection method for a construction machine equipped with a multi-cylinder engine, wherein the engine speed detected by the speed detection means and a plurality of cylinder temperature detection means The exhaust temperature of each cylinder detected in step (b) is stored with a temporal relationship, and a display signal calculated based on the stored data is output to the display means.
- the stored data force also extracts the exhaust temperature of each cylinder at a predetermined engine speed, and this extracted data force average value and standard deviation of the exhaust temperature of each cylinder. At least one of them is calculated every predetermined time, and the exhaust temperature of each cylinder is calculated. Trend data representing a change with time of at least one of the average value and the standard deviation is generated and stored, and a display signal for displaying the trend data is output to the outside of the construction machine.
- a snapshot obtained by extracting the stored data within a predetermined time is generated and stored in accordance with an instruction from the operator, and an instruction from the operator
- a reproduction display signal for reproducing and displaying the transition of the snapshot is output to a display device provided in the cab of the construction machine.
- FIG. 1 is a side view showing the entire structure of a large hydraulic excavator as an example of a construction machine to which an engine protection device for a construction machine according to the present invention is applied.
- FIG. 2 is a circuit diagram showing an embodiment of an engine protection device for a construction machine according to the present invention together with a configuration of a main part of a controller network.
- FIG. 3 is a circuit diagram illustrating another embodiment of the engine protection device for a construction machine according to the present invention, together with a configuration of a main part of a controller network.
- FIG. 4 is a flowchart showing the contents of control processing in an engine monitor device constituting another embodiment of the engine protection device for a construction machine according to the present invention.
- FIG. 5 is a flowchart showing the contents of control processing in an engine monitor device that constitutes a modification of the engine protection device for a construction machine according to the present invention.
- Data recording device storage means, control means, trend data processing means
- FIG. 1 is a side view showing the entire structure of a large hydraulic excavator as an example of a construction machine to which the present invention is applied.
- 1 is a large hydraulic excavator
- 2 is an endless track crawler (crawler) that is a traveling means
- 3 is a traveling body having the crawler belt 2 on both the left and right sides
- 4 is a traveling body.
- 3 is a swivel body that can be swiveled above
- 5 is a driver's cab that is provided on the left side of the front part of the swivel body 4
- 6 is an articulated front that is provided at the center of the front part of the swivel body 4 so as to be able to move up and down.
- It is a work machine (excavation work device).
- the left and right crawler belts 2 are operated by rotational drive of left and right traveling hydraulic motors (not shown), and the revolving structure 4 is driven by rotation of a turning hydraulic motor (not shown).
- [0027] 7 is a boom provided on the revolving body 4 so as to be rotatable in the vertical direction
- 8 is an arm provided at the tip of the boom 7 so as to be rotatable
- 9 is provided at the tip of the arm 8 so as to be rotatable.
- the front work machine 6 includes the boom 7, the arm 8, and the packet 9.
- the boom 7, the arm 8, and the packet 9 are operated by a boom hydraulic cylinder 10, an arm hydraulic cylinder 11, and a packet hydraulic cylinder 12, respectively.
- FIG. 2 is a circuit diagram illustrating an embodiment of the engine protection device for a construction machine according to the present invention together with the configuration of the main part of the controller network.
- 13 is a controller network for collecting various types of operation information of the hydraulic excavator 1, and 14 is for detecting the number of rotations of, for example, a 16-cylinder diesel engine (not shown).
- a rotational speed sensor 15 is a so-called electronic governor type fuel injection device, and 16 is an engine control device that receives a detection signal from the rotational speed sensor 14 etc. and controls the fuel injection device 15 to control the engine rotational speed. is there.
- Reference numeral 17 denotes an engine monitor device that is connected to the engine control device 16 via the serial communication 18 and receives detection signals from various sensors that detect state quantities related to the engine.
- Reference numeral 19 denotes an exhaust temperature sensor provided in the exhaust manifold (not shown) of the engine, and 20a to 20p denote, for example, 16 cylinder temperature sensors (in FIG. 2) provided on the exhaust side of the engine cylinder (not shown). For convenience, only three of 20a, 20b, and 20c are shown), and detection signals from the exhaust temperature sensor 19 and the cylinder temperature sensors 20a to 20p are input to the engine monitor device 17.
- 21 is a hydraulic actuator (more specifically, the left and right traveling hydraulic motors, the turning hydraulic motor, the boom hydraulic cylinder 10, the arm hydraulic cylinder 11, and the packet hydraulic cylinder 12) Etc.) is provided with an operation lever 21a, and an operation lever device that generates an operation signal corresponding to the operation (displacement direction and displacement) of this operation lever 21a (only one representative is shown in FIG. 2). ), 22 receives an operation signal from the operation lever device 21, and outputs a drive signal (control signal) generated by performing predetermined arithmetic processing on the operation signal to an electromagnetic proportional pressure reducing valve (not shown). Electric lever control unit.
- [0032] 23 is provided in the cab 5 and displays various operating information (state quantities related to the engine system, operating system, hydraulic system, etc., described later) of the excavator 1 and alarm information to the operator (operator).
- the display device 24 is a display control device that performs control related to the display of the display device 23.
- Reference numeral 25 denotes a keypad which is connected to the display control device 24 and allows various data settings, screen switching, and the like by an operator's input operation.
- 26 is connected to the engine monitoring device 17 via the first network 27A, and is connected to the display control device 24, the electric lever control device 22 and the like (for example, driven by the engine and connected to the hydraulic actuator unit 1) via the second network 27B.
- This is a data recording device connected to a hydraulic control device related to the hydraulic control of a hydraulic pump that supplies pressure oil to the compressor.
- the display control device 24 and the data recording device 26 include an engine control device 16 and an engine monitoring device 17 and the state quantities relating to the engine system of the hydraulic excavator 1, and the state quantities relating to the operation system from the electric lever control device 22.
- Etc. (for example, state quantities relating to the hydraulic system from the hydraulic control device) are continuously input (for example, every 1 second), and the state quantity data are stored in a temporal relationship.
- the data recording device 26 extracts the stored state quantity data force and the exhaust temperature of each cylinder at a predetermined engine speed (for example, rated speed).
- This extracted data force calculates the average value and standard deviation of the exhaust temperature of each cylinder every predetermined time (for example, every 30 minutes), and changes the average value and standard deviation of the exhaust temperature of each cylinder over time (for example, 30 Trend data representing the change every minute) is generated and stored.
- the generated trend data is downloaded from the data recording device 26 to the portable terminal 29 via the serial communication 28 and transferred, or transmitted via the satellite communication terminal (not shown), for example, the operation of the excavator 1 It is output to the PC terminal 30 installed in the office that manages the condition.
- the display control device 24 based on the command signal from the keypad 25 operated by the operator, from the stored state quantity data for a predetermined time (for example, a maximum of 30). A snapshot in which the engine speed and the exhaust temperature of each cylinder at the time specified by the operator (in minutes) is extracted and generated is stored. The display control device 24 outputs a playback display signal for playing back and displaying the transition of the snapshot (for example, change per second) in response to a command signal from the keypad 23 operated by the operator. It becomes.
- the rotational speed sensor 14 constitutes rotational speed detection means for detecting the rotational speed of the engine mounted on the construction machine described in the claims
- the cylinder temperature sensors 20a to 20p are patents.
- a plurality of cylinder temperature detecting means for detecting the exhaust temperature of each cylinder of the engine described in the claims is configured.
- the data recording device 26 constitutes a storage means for storing the detected engine speed and the exhaust temperature of each cylinder with a temporal relationship, and displays a display signal calculated based on the stored data. It also constitutes a control means to output, and further, the stored data power predetermined engine
- the exhaust temperature of each cylinder at the number of revolutions is extracted, and at least one of the average value and the standard deviation of the exhaust temperature of each cylinder is calculated from the extracted data every predetermined time, and the average value and the exhaust temperature of each cylinder are calculated.
- Trend data processing means for generating and storing trend data representing a change with time of at least one of the standard deviations and outputting a display signal for displaying the trend data to the outside of the construction machine is also configured.
- the display control device 24 constitutes storage means for storing the detected engine speed and the exhaust temperature of each cylinder with a temporal relationship, and outputs a display signal calculated based on the stored data. It also constitutes a control means, and also generates and stores a snapshot that is extracted from the stored data within a predetermined time according to the command from the operator, and replays the transition of the snapshot according to the command from the operator It also constitutes a snapshot processing means for outputting a reproduction display signal to be displayed to a display device.
- the engine speed becomes, for example, the rated speed, and the exhaust temperature of each cylinder of the engine rises.
- the rotational speed sensor 14 detects the rotational speed of the engine
- the cylinder temperature sensors 20a to 20p detect the exhaust temperature of each cylinder of the engine, and these detection signals are input to the data recording device 26 and the display control device 24. And memorized.
- the data recording device 26 calculates, for example, the average value and standard deviation of the exhaust temperature of each cylinder at the rated speed of the engine stored, for example, every 30 minutes, and calculates the exhaust temperature of each cylinder. Generate and store trend data representing changes in average and standard deviation every 30 minutes. The generated trend data is transmitted to the office that manages the operating state of the construction machine via the portable terminal 29 and the like, and is displayed on the PC terminal 30 in the office.
- the manager in the office can obtain a normal state of the exhaust temperature unique to each cylinder at the rated engine speed (for example, a state in which the accumulated operating time of the hydraulic excavator 1 is short).
- a normal state of the exhaust temperature unique to each cylinder at the rated engine speed for example, a state in which the accumulated operating time of the hydraulic excavator 1 is short.
- the change in exhaust gas temperature data of each cylinder at the rated engine speed every 30 minutes is displayed on the PC terminal 30, so it is possible to easily diagnose the trend of the exhaust gas temperature unique to each engine cylinder, Detect abnormalities in each cylinder in advance It can be done.
- the display control device 24 uses the state quantity data stored in response to the command signal from the keypad 25 for a predetermined time ( Generates and stores a snapshot that extracts the engine speed and exhaust temperature of each cylinder for a maximum of 30 minutes. Further, the display control device 24 creates and stores a plurality of snapshots by repeating the instruction to create the operator-powered snapshot. Then, when the operator operates the keypad 25 with the intention of reproducing and displaying the snapshot, the display control device 24 displays the reproduction display signal of the snapshot selected according to the command signal from the keypad 25. The data is output to the display device 23 in the cab 5 and reproduced and displayed on the display device 23.
- the operator in the cab 5 can compare by looking at the transitions (changes per second) of a plurality of snapshots, and the operator can perform exhaustion specific to each cylinder corresponding to the engine speed.
- the air temperature can be compared and diagnosed with the previous state, and abnormalities in each cylinder of the engine can be detected in advance.
- the manager or the operator obtains the normal state of the exhaust temperature specific to each cylinder of the engine corresponding to the engine speed, and diagnoses the tendency of the exhaust temperature specific to each engine cylinder. Therefore, abnormalities in each engine cylinder can be detected in advance.
- the present embodiment is an embodiment further comprising means for determining an abnormality in each cylinder of the engine.
- FIG. 3 is a circuit diagram showing the engine protection device for a construction machine according to the present embodiment, together with the main configuration of the controller network.
- the same reference numerals are given to the same parts as those in the above embodiment, and the description will be omitted as appropriate.
- 31a to 31p are provided in the cab 5 to notify abnormality corresponding to each engine cylinder.
- 16 abnormality notification lamps for the engine monitor device 17 ′ are described later with respect to the engine rotational speed from the rotational speed sensor 14 and the exhaust temperature of each cylinder of the engine from the cylinder temperature sensors 20a to 20p. Executes the predetermined arithmetic processing and generates the control signal Signals (abnormal signals) are output to the abnormality notification lamps 31a to 31p, respectively.
- FIG. 4 is a flowchart showing the control processing contents of the engine monitor device 17 ′ in the present embodiment.
- step 100 whether or not the engine is being driven is determined based on, for example, the engine speed detected by the speed sensor 14. If it is determined that the engine is not running, the determination in step 100 is not satisfied, and this determination is repeated. On the other hand, if it is determined that the engine is running, the determination in step 100 is satisfied, and the routine proceeds to step 110.
- step 110 for example, the engine drive time is calculated based on the detection signal of the rotation speed sensor 14, and this drive time is a predetermined time (specifically, the time until the engine that has started driving is stabilized, for example, 1 hour). Judgment whether it is longer or not.
- step 110 If the engine drive time is shorter than the predetermined time, the determination in step 110 is not satisfied, and the routine returns to step 100 and repeats the same procedure as described above. On the other hand, if the engine drive time is longer than the predetermined time, the determination at step 110 is satisfied, and the routine proceeds to step 120.
- step 120 the exhaust temperature of each cylinder at, for example, the engine rated speed is extracted from the detection signals from the rotational speed sensor 14 and the cylinder exhaust temperature sensors 20a to 20p, and the process proceeds to step 130 for a predetermined time.
- the average value t to t of the exhaust temperature of each cylinder at every time is calculated. After that, go to Step 140, where all the air passes every predetermined time a-1 a _ 16
- t t I is a predetermined threshold t
- step 170 If I t — t I> t, step 170
- the engine monitoring device 17 extracts the exhaust temperature of each cylinder, for example, at the engine rated speed, etc., by the same control procedure as described above with reference to FIG. 4, and each predetermined time (for example, every 30 minutes) Calculate the standard deviation of the exhaust temperature of the cylinder and the standard deviation of the exhaust temperature of all cylinders, and for each cylinder, the deviation between the standard deviation of the exhaust temperature of each cylinder and the standard deviation of the exhaust temperature of all cylinders is a predetermined threshold value. If the deviation is larger than a predetermined threshold value, the control signal to the abnormality notification lamp (any one of 3 la to 31p) corresponding to each cylinder is turned ON, and the corresponding abnormality notification lamp Is going to light up.
- the abnormality notification lamp any one of 3 la to 31p
- the engine monitor device 17 ′ has, for example, a deviation between the average value and standard deviation of the exhaust temperature of each cylinder of the engine and the average value and standard deviation of the exhaust temperature of all cylinders larger than a predetermined threshold value. It is also possible to determine whether! /, And both of these deviations are large! If the deviations are both large, the control signal to the abnormality notification lamp corresponding to each cylinder may be turned on to turn on the corresponding abnormality notification lamp.
- the engine monitoring device 17 uses at least one of the average value and the standard deviation of the exhaust temperature of each cylinder calculated every predetermined time described in the claims, and the exhaust temperature of all the cylinders.
- the first abnormality determination means is configured to determine whether the deviation from the average value and the standard deviation is greater than a predetermined threshold value, and to output an abnormal signal when the deviation is larger than the predetermined threshold value.
- the engine monitor device 17 compares and diagnoses the exhaust temperature unique to each cylinder corresponding to the engine speed, and responds when an abnormality in the engine cylinder is detected. Since the abnormality notification lamp is turned on, the operator can detect the abnormality of each cylinder of the engine in advance.
- the engine monitoring device diagnoses the exhaust temperature of each cylinder according to the engine load state. Then, the type of abnormality may be determined. Such a modification will be described with reference to FIG.
- FIG. 5 is a flowchart showing the control processing contents of the engine monitoring device 17 "(not shown) according to this modification.
- the same reference numerals are given to the same parts as in the above embodiment. The description will be omitted as appropriate.
- step 110 when the engine drive time is longer than the predetermined time, the determination of step 110 is satisfied through step 100, and the routine proceeds to step 200.
- step 200 average values t to t of the exhaust temperatures of the respective cylinders for a predetermined time (for example, 30 seconds) are calculated. After that, go to Step 210 and a-1 a _ 16 at the same predetermined time
- the average value t of the exhaust temperatures of all cylinders is calculated (from the exhaust temperature sensor 19).
- step 240 in order to determine whether or not a predetermined load is applied to the engine, the operation lever 21a and the like are operated by a detection signal from the electric lever control device 22 via a signal line (not shown) or the like. Judge whether the force is good. If the control lever 21a or the like is operated (in other words, a predetermined load is applied to the engine), the determination in step 240 is satisfied, and the routine proceeds to step 250.
- t t I is a predetermined first threshold t
- step 250 determinations are satisfied and go to step 260.
- the fuel injection amount increase alarm is a notification that, for example, the tip of the fuel injection nozzle is missing and normal injection cannot be performed and the injection amount has increased. It becomes.
- step 280 it is determined whether the engine speed is low idle. If the engine speed is low idle, the determination at step 280 is satisfied and the routine goes to step 290.
- a—1 a — all av all t Determine whether I is greater than a predetermined third threshold t (where t ⁇ t).
- step 310 If I t — t I> t, the decision in step 310 is satisfied and the above steps a ⁇ all av 1 ref ⁇ C
- step 310 I t — t I ⁇ t
- the engine monitoring device 17 "performs the same control procedure as in FIG. 5 described above, for example, standard deviation of exhaust temperature of each cylinder every predetermined time (for example, 30 seconds), standard deviation of exhaust temperature of all cylinders. Further, for each cylinder, it is determined whether the deviation between the standard deviation of the exhaust temperature of each cylinder and the standard deviation of the exhaust temperature of all cylinders is greater than a predetermined threshold corresponding to the engine load, and the deviation Is larger than a predetermined threshold value, an abnormality alarm lamp corresponding to each cylinder (a control signal to any force of 3 la to 31p is turned on to light or blink the corresponding abnormality alarm lamp.
- the engine monitor device 17 ′′ has, for example, a deviation between the average value and standard deviation of the exhaust temperature of each cylinder of the engine and the average value and standard deviation of the exhaust temperature of all cylinders to the engine load. From the corresponding predetermined threshold If both of the deviations are large! If the control signal to the abnormality notification lamp corresponding to each cylinder is turned ON, the corresponding abnormality notification lamp is turned on or blinked. A little.
- the engine monitoring device 17 "uses at least one of the average value and the standard deviation of the exhaust temperature of each cylinder and the average value of the exhaust temperature of all the cylinders calculated every predetermined time described in the claims. And determining whether or not the deviation from the standard deviation is greater than a predetermined threshold. If the deviation is greater than the predetermined threshold, the type of abnormality is determined, and second abnormality determination means for outputting an abnormality signal is configured.
- the exhaust temperature of each cylinder is diagnosed according to the engine load state, and an abnormality such as an increase in fuel injection amount or a decrease in valve opening pressure is determined and notified. Abnormalities in each cylinder of the engine can be easily seen. As a result, as in the other embodiments described above, an abnormality in each cylinder of the engine can be detected in advance.
- the abnormality notification lamps 31a to 31p have been described by taking as an example a configuration in which they are turned on by a control signal from the engine monitor device 17 'or 17 ". 4 or 5 is performed by the data recording device 24, and the abnormality notification lamps 31a to 31p are turned on by a control signal from the data recording device 24.
- the same effect as described above can be obtained, and instead of the abnormality notification lamps 31a to 31p, for example, a liquid crystal or the like can be used. It is possible to provide a structured display device for character display, Morse display, etc.!
- the force described with reference to the hydraulic excavator as an example of the construction machine is not limited to this, and the present invention can be applied to other construction machines such as a crawler crane and a wheel loader. In this case, the same effect can be obtained.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05800436A EP1818529B1 (en) | 2004-11-25 | 2005-11-07 | Device and method for protecting engine of construction machine |
AU2005308302A AU2005308302B2 (en) | 2004-11-25 | 2005-11-07 | Device and method for protecting engine of construction machine |
US10/590,218 US7433777B2 (en) | 2004-11-25 | 2005-11-07 | Engine protection system and method for construction machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-339842 | 2004-11-25 | ||
JP2004339842A JP4315346B2 (ja) | 2003-12-26 | 2004-11-25 | 建設機械のエンジン診断装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006057153A1 true WO2006057153A1 (ja) | 2006-06-01 |
Family
ID=36497893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/020388 WO2006057153A1 (ja) | 2004-11-25 | 2005-11-07 | 建設機械のエンジン保護装置及び保護方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7433777B2 (ja) |
EP (1) | EP1818529B1 (ja) |
KR (1) | KR101065513B1 (ja) |
AU (1) | AU2005308302B2 (ja) |
WO (1) | WO2006057153A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7647156B2 (en) * | 2007-12-14 | 2010-01-12 | General Electric Company | Method and system for using exhaust temperature anomalies to detect fugitive fueling of a reciprocating internal combustion engine |
DE102008032741B3 (de) * | 2008-07-11 | 2010-02-18 | Continental Automotive Gmbh | Verfahren und Diagnosegerät zum Erkennen einer Fehlfunktion an einer Einspritzanlage |
JP6209024B2 (ja) | 2013-08-28 | 2017-10-04 | ヤンマー株式会社 | 遠隔サーバ |
CN110284970B (zh) * | 2019-06-29 | 2020-08-21 | 潍柴动力股份有限公司 | 一种异常检测方法及装置 |
WO2021085608A1 (ja) * | 2019-10-31 | 2021-05-06 | 住友建機株式会社 | ショベル管理システム、ショベル用携帯端末、およびショベル用携帯端末に用いられるプログラム |
CN111720228A (zh) * | 2020-06-30 | 2020-09-29 | 广西玉柴机器股份有限公司 | 一种发动机各缸排温监控修正方法及系统 |
US11881093B2 (en) | 2020-08-20 | 2024-01-23 | Denso International America, Inc. | Systems and methods for identifying smoking in vehicles |
US11636870B2 (en) | 2020-08-20 | 2023-04-25 | Denso International America, Inc. | Smoking cessation systems and methods |
US11828210B2 (en) | 2020-08-20 | 2023-11-28 | Denso International America, Inc. | Diagnostic systems and methods of vehicles using olfaction |
US11932080B2 (en) | 2020-08-20 | 2024-03-19 | Denso International America, Inc. | Diagnostic and recirculation control systems and methods |
US11813926B2 (en) | 2020-08-20 | 2023-11-14 | Denso International America, Inc. | Binding agent and olfaction sensor |
US11760169B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Particulate control systems and methods for olfaction sensors |
US11760170B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Olfaction sensor preservation systems and methods |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0328044A (ja) * | 1989-06-26 | 1991-02-06 | Zexel Corp | 監視装置 |
JPH05321809A (ja) * | 1992-05-21 | 1993-12-07 | Yanmar Diesel Engine Co Ltd | 希薄燃焼ガス機関の監視装置 |
JPH0874653A (ja) * | 1994-09-06 | 1996-03-19 | Daihatsu Diesel Mfg Co Ltd | ディーゼル機関の監視装置 |
JP2004076624A (ja) * | 2002-08-13 | 2004-03-11 | Isuzu Motors Ltd | 燃料噴射制御装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012906A (en) * | 1972-06-26 | 1977-03-22 | Nippon Soken, Inc. | Overheat preventing system for exhaust gas purifier of vehicles |
US4114442A (en) * | 1976-09-03 | 1978-09-19 | Avicon Development Group | Temperature monitoring system |
US4122720A (en) * | 1977-04-07 | 1978-10-31 | Alnor Instrument Company | Diesel engine exhaust temperature monitor |
US4821216A (en) * | 1987-04-10 | 1989-04-11 | Howell Instruments, Inc. | Multifunction meter for use in an aircraft |
US5123397A (en) * | 1988-07-29 | 1992-06-23 | North American Philips Corporation | Vehicle management computer |
DE3914264C1 (ja) * | 1989-04-29 | 1990-09-13 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
AT393324B (de) * | 1989-12-22 | 1991-09-25 | Avl Verbrennungskraft Messtech | Verfahren und einrichtung zur diagnose von brennkraftmaschinen |
JP3743683B2 (ja) * | 1995-05-24 | 2006-02-08 | 株式会社小松製作所 | 内燃機関の保護方法 |
JP3767875B2 (ja) * | 1997-11-13 | 2006-04-19 | 株式会社小松製作所 | エンジンの異常検出装置および異常検出方法 |
KR20040029304A (ko) * | 2001-08-29 | 2004-04-06 | 니이가타 겐도키 가부시키가이샤 | 엔진, 엔진의 배기온도 제어장치 및 제어방법 |
JP4094380B2 (ja) * | 2001-08-29 | 2008-06-04 | 新潟原動機株式会社 | エンジン、エンジンの排気温度制御装置及び制御方法、コンピュータをエンジンの排気温度制御手段として機能させるためのプログラム |
US7039518B2 (en) * | 2003-04-16 | 2006-05-02 | Avidyne Corporation | Computer method and apparatus for aircraft mixture leaning |
-
2005
- 2005-11-07 EP EP05800436A patent/EP1818529B1/en not_active Expired - Fee Related
- 2005-11-07 WO PCT/JP2005/020388 patent/WO2006057153A1/ja active Application Filing
- 2005-11-07 KR KR1020067014870A patent/KR101065513B1/ko not_active IP Right Cessation
- 2005-11-07 US US10/590,218 patent/US7433777B2/en active Active
- 2005-11-07 AU AU2005308302A patent/AU2005308302B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0328044A (ja) * | 1989-06-26 | 1991-02-06 | Zexel Corp | 監視装置 |
JPH05321809A (ja) * | 1992-05-21 | 1993-12-07 | Yanmar Diesel Engine Co Ltd | 希薄燃焼ガス機関の監視装置 |
JPH0874653A (ja) * | 1994-09-06 | 1996-03-19 | Daihatsu Diesel Mfg Co Ltd | ディーゼル機関の監視装置 |
JP2004076624A (ja) * | 2002-08-13 | 2004-03-11 | Isuzu Motors Ltd | 燃料噴射制御装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1818529A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1818529A4 (en) | 2011-04-13 |
EP1818529B1 (en) | 2013-02-27 |
US20070171035A1 (en) | 2007-07-26 |
KR101065513B1 (ko) | 2011-09-19 |
AU2005308302B2 (en) | 2009-04-23 |
AU2005308302A1 (en) | 2006-06-01 |
KR20070090072A (ko) | 2007-09-05 |
US7433777B2 (en) | 2008-10-07 |
EP1818529A1 (en) | 2007-08-15 |
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