KR101702116B1 - system for monitoring combustion chamber of engine with multiple cylinder - Google Patents

system for monitoring combustion chamber of engine with multiple cylinder Download PDF

Info

Publication number
KR101702116B1
KR101702116B1 KR1020150070624A KR20150070624A KR101702116B1 KR 101702116 B1 KR101702116 B1 KR 101702116B1 KR 1020150070624 A KR1020150070624 A KR 1020150070624A KR 20150070624 A KR20150070624 A KR 20150070624A KR 101702116 B1 KR101702116 B1 KR 101702116B1
Authority
KR
South Korea
Prior art keywords
combustion chamber
amplifier
cylinder
module
unit
Prior art date
Application number
KR1020150070624A
Other languages
Korean (ko)
Other versions
KR20160137748A (en
Inventor
성 훈 김
김창훈
Original Assignee
김성훈
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김성훈 filed Critical 김성훈
Priority to KR1020150070624A priority Critical patent/KR101702116B1/en
Publication of KR20160137748A publication Critical patent/KR20160137748A/en
Application granted granted Critical
Publication of KR101702116B1 publication Critical patent/KR101702116B1/en

Links

Images

Classifications

    • 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
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • 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
    • F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
    • 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
    • F02B77/085—Safety, indicating, or supervising devices with sensors measuring combustion processes, e.g. knocking, pressure, ionization, combustion flame
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The present invention provides an integrated multi-cylinder engine combustion chamber monitoring system. In the integrated multicylinder engine combustion chamber monitoring system according to the present invention, the transfer of the status information of each combustion chamber of the multi-cylinder engine is performed by serial communication such as CAN communication to simplify the wiring line. Therefore, the inductance and the conductive noise In particular, monitoring of the pressure state information in the combustion chamber of the compression ignition type engine and the pressure state information in the combustion chamber of the marine engine can be performed, And have technical features that can be effectively applied to monitoring.
The integrated multi-cylinder engine combustion chamber monitoring system according to the present invention includes a plurality of detection sensors 11 installed in a plurality of cylinders 2 constituting a multi-cylinder engine 1 and detecting state information of a combustion chamber in the cylinder 2 A combustion chamber state detection module (10) comprising: An amplifier module (20) comprising a plurality of amplifier units (21) connected to each detection sensor (11) and amplifying the combustion chamber state information; A serial connection line 30 for serially connecting a plurality of amplifier units 21 in series; And is connected to the amplifier module 20 via the series connection line 30 and receives the combustion chamber status information of each cylinder 2 in real time through the serial connection line 30. The combustion chamber status information, And an integrated monitoring module (40) for allowing the combustion chamber state of each cylinder (2) to be monitored in real time by the combustion chamber state analysis unit (421) for calculating the parameters for the combustion chamber.

Description

An integrated multi-cylinder engine combustion chamber monitoring system comprising:

The present invention relates to an integrated multi-cylinder engine combustion chamber monitoring system, and more particularly to a multi-cylinder engine combustion chamber monitoring system in which the transmission of status information for each combustion chamber of a multi-cylinder engine is performed by serial communication such as CAN communication, In particular, it is desirable to monitor the pressure state information in the combustion chamber of the compression ignition type engine or to monitor the pressure state information of the combustion chamber of the marine engine in order to improve the durability of the apparatus and system reliability, And more particularly, to an integrated multi-cylinder engine combustion chamber monitoring system that can be effectively applied to monitoring of internal pressure state information.

The development of the engine monitoring system is a very important issue related to the regulation of exhaust emission in each country. Accordingly, Korean Patent Registration No. 10-0345132 entitled "Engine Monitoring Method" and Published Unexamined Patent Application No. 10-2004-0025552 entitled "Multi-cylinder engine control device and control method" have been developed.

Meanwhile, in the conventional engine monitoring system, sensor information sensed from a plurality of sensors has been subjected to a complicated wiring operation of collecting and connecting sensor information to a central server using a complicated cable. When the internal state information of the combustion chamber of the multi-cylinder engine is monitored, a plurality of detection sensors connected to the cylinders are connected in parallel to the monitoring device so that the internal state information of the combustion chamber of each detection sensor is transmitted to the monitoring device. The wiring is increased and the inductance and the conductive noise are increased, so that the device durability is lowered and the system reliability is lowered.

delete

delete

Korean Registered Patent Publication No. 10-0345132 entitled "Engine Monitoring Method" Korean Patent Laid-Open Publication No. 10-2004-0025552 entitled "Control Device and Control Method of Multi-cylinder Engine"

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a multi-cylinder engine in which the amplifier units connected to the detection sensors installed in the respective cylinders of the multicylinder engine are serially connected in series by a serial communication line, The integrated wiring module is simplified and the wiring line is simplified. As a result, the durability and system reliability of the inductance and the conductive noise are reduced, the system implementation cost is reduced, the ease of installation and maintenance is improved, It is an object of the present invention to provide a new type of integrated multi-cylinder engine combustion chamber monitoring system.

In particular, it is an object of the present invention to provide a new type of integrated multi-cylinder engine combustion chamber monitoring system which can be effectively applied to monitoring the pressure state information in a combustion chamber of a compression ignition type engine or monitoring the pressure state information in a combustion chamber of a marine engine.

The present invention can easily and easily replace the amplifier unit of a specific cylinder in which a problem occurs by allowing the amplifier unit to be detachably mounted independently for each cylinder, thereby facilitating system maintenance and reducing maintenance cost It is an object of the present invention to provide a new type of integrated multi-cylinder engine combustion chamber monitoring system.

It is another object of the present invention to provide a new integrated multi-cylinder engine combustion chamber monitoring system capable of self-diagnosing the unbalance of an amplifier unit, thereby ensuring and maintaining system stability and reliability.

According to an aspect of the present invention, there is provided a multi-cylinder engine including a plurality of cylinders, each cylinder being configured to detect a state of the combustion chamber in the cylinder, A combustion chamber condition detecting module (10) including a sensor (11); An amplifier module (20) comprising a plurality of amplifier units (21) connected to each detection sensor (11) and amplifying the combustion chamber state information; A serial connection line 30 for serially connecting a plurality of amplifier units 21 in series; And is connected to the amplifier module 20 via the series connection line 30 and receives the combustion chamber status information of each cylinder 2 in real time through the serial connection line 30. The combustion chamber status information, And an integrated monitoring module (40) for allowing the combustion chamber status of each cylinder (2) to be monitored in real time by a combustion chamber status analysis unit (421) for calculating the parameters for the combustion chamber .

In the integrated multicylinder engine combustion chamber monitoring system according to the present invention, the series connection line 30 is connected to a serial communication line (not shown) for allowing signal transmission to be performed by the serial communication from the starting point amplifier unit 21 to the terminating point amplifier unit 21. [ (31); And a power supply line 32 for supplying power to the plurality of amplifier units 21 connected in series.

In the integrated multi-cylinder engine combustion chamber monitoring system according to the present invention, the amplifier unit 21 includes an amplifier 211 connected to the detection sensor 11 to amplify the combustion chamber state information analog signal; An A / D converter 212 connected to the amplifier 211 to convert the combustion chamber state information analog signal into a digital signal; And a cartridge type casing 213 in which an amplifier 211 and an A / D converter 212 are incorporated and detachably mounted at a set point.

In the integrated multi-cylinder engine combustion chamber monitoring system according to the present invention, the integrated monitoring module 40 generates an amplifier checking reference signal and transmits the reference signal to each amplifier unit 21 through the series connection line 30, An amplifier unit unbalance checking unit 422 for checking whether the return signal from the amplifier unit 21 exceeds the set error range value and checking the unbalance of the amplifier unit 21; And an alarm signal management unit 423 for generating an alarm signal upon detection of a return signal exceeding the error range value and outputting it to the outside.

In the integrated multi-cylinder engine combustion chamber monitoring system according to the present invention, the integrated monitoring module 40 is connected to the termination point amplifier unit 21 through the series connection line 30, and sequentially from the respective amplifier units 21, A data acquisition module 41 for receiving the integrated combustion chamber status information integration signal transmitted to the connection line 30 in real time; A main analysis module 42 connected to the data collection module 41 to receive the combustion chamber status information of each cylinder 2 and having a combustion chamber status analysis unit 421 to monitor the combustion chamber status of each cylinder 2 in real time, As shown in FIG.

In the integrated multi-cylinder engine combustion chamber monitoring system according to the present invention, the multi-cylinder engine 1 is a compression ignition type engine, and the combustion chamber state analysis unit 421 of the integrated monitoring module 40 calculates the maximum cylinder pressure, The crank angle, the compression pressure and the indicated mean effective pressure at the crank angle, the maximum pressure increasing rate and the maximum pressure increasing rate of the respective cylinders 2 are calculated as parameters for monitoring the combustion chamber condition, Can be monitored.

In the integrated multi-cylinder engine combustion chamber monitoring system according to the present invention, the combustion chamber state analysis unit 421 of the integrated monitoring module 40 calculates the P-θ diagram, the PV diagram, and the PD diagram, Can be monitored in real time.

According to the integrated multi-cylinder engine combustion chamber monitoring system of the present invention, the simplification of the wiring line for monitoring improves the device durability and system reliability as the inductance and the conductive noise are reduced, the system implementation cost is reduced, It is possible to improve the performance, increase the expandability, and the like.

Further, according to the integrated multi-cylinder engine combustion chamber monitoring system of the present invention, it is possible to easily and easily replace the amplifier unit of a specific cylinder in which trouble has occurred through the independent mounting of the amplifier unit by each cylinder, , And the maintenance cost is also reduced. According to the integrated multi-cylinder engine combustion chamber monitoring system of the present invention, the unbalance of the amplifier unit can be self-diagnosed, and system stability and reliability can be ensured and maintained.

In particular, the present invention can be effectively applied to monitoring the pressure state information in the combustion chamber of a compression ignition type engine or monitoring the pressure state information in the combustion chamber of a marine engine.

1 is a basic block diagram of an integrated multi-cylinder engine combustion chamber monitoring system according to the present invention;
2 is a detailed block diagram of an integrated multi-cylinder engine combustion chamber monitoring system according to an embodiment of the present invention;
FIG. 3 is a block diagram illustrating an integrated monitoring module and its detailed configuration and operation according to an embodiment of the present invention; FIG.
FIG. 4 is a diagram illustrating a screen in which state information for each combustion chamber in the integrated multi-cylinder engine combustion chamber monitoring system according to the embodiment of the present invention is displayed as numerical values; FIG.
FIG. 5 is an exemplary view showing a screen in which a specific combustion chamber interior P-θ diagram in an integrated multi-cylinder engine combustion chamber monitoring system according to an embodiment of the present invention is displayed; FIG.
FIG. 6 is an exemplary view showing a screen in which a specific combustion chamber internal PV diagram in an integrated multi-cylinder engine combustion chamber monitoring system according to an embodiment of the present invention is displayed; FIG.
FIG. 7 is an exemplary view showing a screen in which state information for each combustion chamber in the integrated multi-cylinder engine combustion chamber monitoring system according to an embodiment of the present invention is displayed as a bar graph; FIG.
8 is an exemplary view illustrating a screen in which a critical curve is displayed through an integrated multi-cylinder engine combustion chamber monitoring system according to an embodiment of the present invention;
FIG. 9 is an exemplary view showing a setting screen of the integrated monitoring module according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings 1 to 9. On the other hand, in the drawings and the detailed description, there is a description of a configuration and an operation which can be easily recognized by those skilled in the art from a general engine monitoring system, a pressure detection sensor, a compression ignition type engine, an amplifier, an A / D converter, a serial communication, The cities and references are brief or omitted. In the drawings and specification, there are shown in the drawings and will not be described in detail, and only the technical features related to the present invention are shown or described only briefly. Respectively.

1, the integrated multi-cylinder engine combustion chamber monitoring system 100 according to an embodiment of the present invention includes a combustion chamber state detection module 10, an amplifier module 20, a series connection line 30, an integrated monitoring module 40, .

The combustion chamber state detection module 10 is a module including a plurality of detection sensors 11 which are respectively installed in a plurality of cylinders 2 constituting a multi-cylinder engine 1 and detect the state information of the combustion chamber in the cylinder 2 . Here, when the multi-cylinder engine 1 is a compression ignition type engine, the pressure sensor 11a may be used as the detection sensor 11 to monitor the pressure state in the combustion chamber. Various kinds of measurement sensors such as flow sensors other than the pressure detection sensor 11a may be added to the combustion chamber state detection module 10 of the integrated multi-cylinder engine combustion chamber monitoring system 100 according to the embodiment of the present invention So that the scalability is increased.

The amplifier module 20 is a module composed of a plurality of amplifier units 21 connected to each of the detection sensors 11 to amplify the combustion chamber status information. The amplifier unit 21 may include an amplifier 211, an A / D converter 212, and a cartridge-type casing 213 as shown in FIG.

The amplifier 211 is connected to the detection sensor 11 to amplify the combustion chamber state information analog signal and the A / D converter 212 is connected to the amplifier 211 to convert the digital signal into the combustion chamber state information analog signal . The cartridge type casing 213 has an amplifier 211 and an A / D converter 212 built therein and is detachably mounted at a set point. By the cartridge type casing 213, (2), so that it can be easily and easily replaced when necessary.

The series connection line 30 is a line for serially connecting a plurality of amplifier units 21 in series. Such a serial connection line 30 may include a serial communication line 31 and a power supply line 32 as shown in FIG.

The serial communication line 31 is a line for causing signal transmission to be performed by the serial communication from the starting point amplifier unit 21 to the end point amplifier unit 21 and is connected to each detection sensor 11 via the serial communication line 31. [ The combustion chamber state information is sequentially accumulated and transmitted to the integrated monitoring module 40 in the form of an integrated signal. The serial communication line 31 receives a reference signal for checking an amplifier generated from the integrated monitoring module 40 and sequentially transmits the reference signal to each of the amplifier units 21. As the serial communication line 31, a CAN communication line may be used, but the present invention is not limited thereto.

The power supply line 32 is a line for supplying power to a plurality of amplifier units 21 connected in series.

The integrated monitoring module 40 is connected to the amplifier module 20 through the serial connection line 30 and receives the combustion chamber status information of each cylinder 2 in real time through the serial connection line 30. [ The integrated monitoring module 40 may include a data collection module 41 and a main analysis module 42 as shown in FIG.

The data acquisition module 41 is connected to the termination point amplifier unit 21 through a series connection line 30 and is transferred from each amplifier unit 21 sequentially to the series connection line 30, And transmits the integrated signal to the main analysis module 42 in real time. The data acquisition module 41 includes a DAQ unit 411 that receives the combustion chamber status information integration signal, an output unit 413 that outputs information, a controller that controls the DAQ unit 411 and the output unit 413, (412).

The main analysis module 42 is connected to the data acquisition module 41 and receives the combustion chamber status information of each cylinder 2 and monitors the combustion chamber status of each cylinder 2 in real time. To this end, the main analysis module 42 may include a combustion chamber state analysis unit 421, an amplifier unit unbalance checking unit 422, and an alarm signal management unit 423.

The combustion chamber condition analyzing unit 421 is a unit that receives the combustion chamber condition information and calculates parameters for monitoring the combustion chamber condition to monitor the combustion chamber condition of each cylinder 2 in real time.

The amplifier unit unbalance checking unit 422 generates an amplifier checking reference signal and transmits it to each amplifier unit 21 through the serial connection line 30 and outputs the return signal from each amplifier unit 21 to the set error range And checks the unevenness rate of the amplifier unit 21. In this case, The reference signal for amplifier checking can be generated at a set period and transmitted to each amplifier unit 21. [ The alarm signal management unit 423 generates an alarm signal upon detection of a return signal exceeding the error range value and outputs the alarm signal to the outside.

The unbalance rate of the amplifier 211 or the A / D converter 212 can be periodically checked through the amplifier unit unbalance checking unit 422 and the alarm signal managing unit 423. [ So that the gain of the amplifier 211 and the unevenness of the A / D converter 212 can be corrected.

On the other hand, the combustion chamber state analyzing unit 421 may include a knocking determination algorithm to detect occurrence of knocking in the combustion chamber, and generate and output an alarm signal upon occurrence of knocking. This allows optimization of engine operation and increase in durability.

Here, the case of multi-cylinder engine 1 is a compression-ignition engine, combustion state analysis unit 421 of the integrated monitoring module 40 of each crank at the maximum cylinder pressure (P max), the maximum cylinder pressure (P max) ( θ pmax), the maximum pressure increase rate {(dp / dθ) max} , the maximum pressure increase rate crank angle, the compression pressure at the {(dp / dθ) max} (P com), indicated mean effective pressure (indicated mean effective pressure, P mi as parameters for monitoring the combustion chamber condition, so that the pressure state in the combustion chamber of each cylinder 2 is monitored in real time. The parameter for monitoring the combustion chamber condition may be displayed on the output device 413 as shown in Fig.

In addition, the combustion chamber condition analyzing unit 421 can calculate the P-θ diagram as shown in FIG. 5, the PV diagram as shown in FIG. 6, or the PD diagram, so that the combustion chamber state of each cylinder 2 can be monitored in real time. The combustion chamber condition analyzing unit 421 may generate and analyze a critical curve as shown in FIG. Meanwhile, the integrated monitoring module 40 can adjust various setting values through the setting screen as shown in FIG.

The integrated multicylinder engine combustion chamber monitoring system 100 according to the embodiment of the present invention configured as described above includes an amplifier unit 21 connected to the detection sensor 11 installed in each cylinder 2 of the multi- Since the combustion chamber state information is cumulatively transmitted to the integrated monitoring module 40 through the serial communication line 31, the wiring line is simplified and the inductance and the conductive noise are reduced Which improves device durability and system reliability, reduces system implementation cost, improves ease of installation and maintenance work, and increases scalability. In the integrated multi-cylinder engine combustion chamber monitoring system 100 according to the embodiment of the present invention, since the amplifier unit 21 is detachably and independently mounted for each cylinder 2, the amplifier unit of the specific cylinder 2 21) can be easily and easily replaced, thereby facilitating maintenance of the system and reducing maintenance costs. Also, the integrated multi-cylinder engine combustion chamber monitoring system 100 according to the embodiment of the present invention can self-diagnose the unbalance of the amplifier unit 21, thereby ensuring system stability and reliability.

The integrated multi-cylinder engine combustion chamber monitoring system 100 according to the embodiment of the present invention can be effectively applied to monitoring the pressure state information in the combustion chamber of the compression ignition type engine or to monitor the pressure state information in the combustion chamber of the ship engine.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that changes and modifications may be made.

1: Multi-cylinder engine 2: Cylinder
10: combustion chamber state detection module 11: detection sensor
11a: pressure detection sensor 20: amplifier module
21: amplifier unit 211: amplifier
212: A / D converter 213: cartridge type casing
30: serial connection line 31: serial communication line
32: Power supply line 40: Integrated monitoring module
41: Data Acquisition Module 411: DAQ Unit
412: Controller 413: Output device
42: main analysis module 421: combustion chamber condition analysis unit
422: Amplifier unit unbalance checking unit 423: Alarm signal managing unit
100: Integrated multi-cylinder engine combustion chamber monitoring system

Claims (7)

And a plurality of detection sensors (11) which are respectively installed in a plurality of cylinders (2) constituting a multi-cylinder engine (1) as a compression ignition type engine and detect the state information of the combustion chamber in the cylinder (2) Includes a combustion chamber state detection module (10) including a pressure detection sensor (11a) for monitoring a pressure state of a combustion chamber;
And a plurality of amplifier units 21 connected to each of the detection sensors 11 to amplify the combustion chamber state information. The amplifier unit 21 is connected to the detection sensor 11 and amplifies the combustion chamber state information analog signal 211), an A / D converter 212 connected to the amplifier 211 for converting a digital signal of the combustion chamber state information analog signal, an amplifier 211 and an A / D converter 212, An amplifier module 20 having a configuration including a cartridge type casing 213 to which the amplifier unit 21 is detachably attached and replaced by the cartridge type casing 213 independently of each cylinder 2, and;
A serial communication line (CAN communication line) which is composed of a CAN communication line for serially connecting a plurality of amplifier units 21 in series and in which signal transmission is performed by serial communication from the starting point amplifier unit 21 to the end point amplifier unit 21 31), and a power supply line (32) for supplying power to a plurality of amplifier units (21) connected in series;
And is connected to the amplifier module 20 via the series connection line 30 and receives the combustion chamber status information of each cylinder 2 in real time through the serial connection line 30. The combustion chamber status information, So that the state of the combustion chamber of each cylinder 2 is monitored in real time by the combustion chamber condition analysis unit 421 for calculating the parameters for each cylinder unit 2 and connected to the end point amplifier unit 21 via the series connection line 30, The data acquisition module 41 is connected to the data acquisition module 41 to receive the integrated combustion chamber state information integration signal in real time from the combustion chamber state information 21 of the respective cylinders 2 to the series connection line 30, And a main analysis module (42) that receives information and includes a combustion chamber status analysis unit (421) to monitor the combustion chamber status of each cylinder (2) in real time. Comprising: a monitoring module 40,
The data collection module (41) of the integrated monitoring module (40)
The integrated combustion state information integration signal transmitted from each of the amplifier units 21 to the series connection line 30 is input in real time to the main analysis module 42. The integrated analysis result signal is transmitted to the main analysis module 42, A unit 411; An output device (413) for outputting information; And a controller 412 for controlling the DAQ unit 411 and the output device 413,
The main analysis module (42) of the integrated monitoring module (40)
The crank angle at the maximum cylinder pressure, the crank angle at the maximum cylinder pressure, the maximum pressure increase rate, the crank angle at the maximum pressure increase rate, the compression pressure, and the indicated mean effective pressure as parameters for monitoring the combustion chamber condition, The PV diagram and the PD diagram are calculated so that the state of the combustion chamber of each cylinder 2 is monitored in real time and a knocking determination algorithm is provided so that the knocking occurrence of the combustion chamber A combustion chamber state analysis unit (421) capable of generating and outputting an alarm signal upon occurrence of knocking; A reference signal for amplifier checking is generated and transmitted to each amplifier unit 21 through the serial connection line 30 in order to determine whether the return signal from each amplifier unit 21 exceeds the set error range value An amplifier unit unbalance checking unit 422 which is generated at a set period and transmitted to each of the amplifier units 21; And an alarm signal management unit 423 for generating an alarm signal when a return signal exceeding the error range value is detected and outputting the alarm signal to the outside, so that the unevenness of the amplifier unit 21 can be periodically checked Integrated multi-cylinder engine combustion chamber monitoring system. delete delete delete delete delete delete
KR1020150070624A 2015-05-20 2015-05-20 system for monitoring combustion chamber of engine with multiple cylinder KR101702116B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150070624A KR101702116B1 (en) 2015-05-20 2015-05-20 system for monitoring combustion chamber of engine with multiple cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150070624A KR101702116B1 (en) 2015-05-20 2015-05-20 system for monitoring combustion chamber of engine with multiple cylinder

Publications (2)

Publication Number Publication Date
KR20160137748A KR20160137748A (en) 2016-12-01
KR101702116B1 true KR101702116B1 (en) 2017-02-02

Family

ID=57577161

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150070624A KR101702116B1 (en) 2015-05-20 2015-05-20 system for monitoring combustion chamber of engine with multiple cylinder

Country Status (1)

Country Link
KR (1) KR101702116B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2586415B2 (en) * 1993-11-29 1997-02-26 株式会社デンソー Knock control device for internal combustion engine
JP3806235B2 (en) * 1997-09-22 2006-08-09 三菱重工業株式会社 Method for diagnosing joint structure of internal combustion engine
KR100345132B1 (en) 1999-12-30 2002-07-24 현대자동차주식회사 Method for monitoring an engine
JP4086602B2 (en) 2002-09-17 2008-05-14 株式会社日立製作所 Control device and control method for multi-cylinder engine

Also Published As

Publication number Publication date
KR20160137748A (en) 2016-12-01

Similar Documents

Publication Publication Date Title
US8250924B2 (en) Industrial process device utilizing piezoelectric transducer
US6741919B1 (en) Methods and apparatus for detecting impending sensor failure
US20170160243A1 (en) Device and System for Structural Health Monitoring
EP2149832A3 (en) Method and systems for monitoring gas turbine engine temperature
FI123044B (en) Method and arrangement for controlling ignition failure
US10109118B2 (en) Method for monitoring the operation of a sensor
CN107764336A (en) A kind of pumping station operation state real time on-line monitoring and fault diagnosis system and method
WO2007095585A3 (en) Systems and methods for real-time system monitoring and predictive analysis
WO2009155132A3 (en) Fuel system diagnostics by analyzing engine cylinder pressure signal and crankshaft speed signal
JP2009501857A (en) System and method for monitoring the condition of a work machine
US20180040175A1 (en) Hyper-redundant sensor nodes
GB2457923A (en) A condensate recovery system
WO2021048848A3 (en) System and method for crop monitoring and management
US8438906B2 (en) Apparatus and method for the detection of knocking combustion
KR101702116B1 (en) system for monitoring combustion chamber of engine with multiple cylinder
CN109374287B (en) Hydraulic retarder control valve detection system and method
CN106980309A (en) Facilities and equipment intelligent remote management system
KR101490471B1 (en) System and method for measuring and diagnosing signal
CN108444592A (en) Wireless vibration monitoring and fault diagnosis system
KR102180789B1 (en) Apparatus and method for monitoring engine condition
CN203549409U (en) Online safety early-warning device of medium- and low-pressure gas regulator
KR101554474B1 (en) Control system
KR20200074740A (en) System for remote diagnosing fault of oxygen concentration analyzer and method thereof
EP3179165B1 (en) Steam using facility management method, and steam using facility
CN103010263A (en) Carrier and image-based electric hydraulic switch machine working condition acquisition system

Legal Events

Date Code Title Description
AMND Amendment
AMND Amendment
X701 Decision to grant (after re-examination)
GRNT Written decision to grant