CN113029580A - Engine cylinder pressure data real-time acquisition and combustion characteristic parameter parallel computing system - Google Patents
Engine cylinder pressure data real-time acquisition and combustion characteristic parameter parallel computing system Download PDFInfo
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Abstract
The invention discloses a system for collecting cylinder pressure data of an engine in real time and calculating combustion characteristic parameters in parallel, which is applied to the technical field of online sampling of the in-cylinder pressure of the engine and real-time parallel calculation of combustion state parameters, and comprises the following steps: a pulse signal processing module; the camshaft phase sensor is connected with the first input end of the pulse signal processing module; the encoder is connected with the second input end of the pulse signal processing module; the first input end of the cylinder pressure signal sampling module is connected with the output end of the pulse signal processing module; the cylinder pressure sensor group is connected with the second input end of the cylinder pressure signal sampling module; the at least two combustion parameter calculation modules are connected with the output end of the cylinder pressure signal sampling module; and the processor module is connected with the output end of the combustion parameter calculation module. The invention adopts the low-cost piezoresistive cylinder pressure sensor and the multi-microprocessor parallel computing architecture scheme, and has the advantages of simple composition, low cost, high computing speed and good real-time performance.
Description
Technical Field
The invention relates to the technical field of on-line sampling of in-cylinder pressure of an engine and real-time parallel calculation of combustion state parameters, in particular to a system for acquiring in-cylinder pressure data of the engine in real time and calculating combustion characteristic parameters in parallel.
Background
The variation curve of the pressure in the engine cylinder along with the crank angle can reflect the combustion quality in the engine cylinder, and the closed-loop control of the combustion process of the engine can be realized by measuring the cylinder pressure in real time and calculating the combustion state parameters (CA10, CA50, CA90, IMEP and the like), thereby being beneficial to improving the fuel economy, reducing the emission, improving the fuel adaptability of the engine and simplifying the calibration work and the fault diagnosis algorithm. Has great advantages in engine control.
The existing engine control is mainly based on a lookup table type control method of calibration MAP, the calibration workload is large, and after the running state of the engine deviates from the calibration state, the calibration MAP cannot be changed along with the calibration MAP, and the engine control has no self-adaptability, so that the optimal control parameters cannot be provided for the engine. The method for measuring the cylinder pressure on line, calculating the combustion state parameters in real time and adjusting the engine control parameters in real time according to the combustion state parameters can realize closed-loop control of the combustion process in the engine cylinder, and has better adaptivity compared with a control mode based on MAP. The reasons for restricting the application of the cylinder pressure on-line measurement and the combustion state parameter real-time calculation system mainly comprise the cost of a cylinder pressure sensor and the real-time calculation capacity of microprocessing.
Therefore, it is an urgent problem to provide an architecture solution that employs a low-cost piezoresistive cylinder pressure sensor and a low-cost multi-microprocessor parallel computation.
Disclosure of Invention
In view of the above, the invention provides a system for acquiring the engine cylinder pressure data in real time and calculating the combustion characteristic parameters in parallel, and the system has the technical effects of good adaptability, low cost and high calculation speed.
In order to achieve the purpose, the invention adopts the following technical scheme:
the engine cylinder pressure data real-time acquisition and combustion characteristic parameter parallel computing system comprises:
the pulse signal processing module is used for generating a cylinder pressure sampling synchronous signal;
the camshaft phase sensor is connected with the first input end of the pulse signal processing module and used for acquiring the phase of the camshaft;
the encoder is connected with the second input end of the pulse signal processing module and used for setting the number of cylinder pressure sampling points;
the first input end of the cylinder pressure signal sampling module is connected with the output end of the pulse signal processing module and is used for sampling cylinder pressure signals of all cylinders;
the cylinder pressure sensor group is connected with the second input end of the cylinder pressure signal sampling module and used for collecting cylinder pressure signals of all cylinders;
the at least two combustion parameter calculation modules are connected with the output end of the cylinder pressure signal sampling module; the device is used for calculating the combustion state parameters in real time in parallel;
and the processor module is connected with the output end of the combustion parameter calculation module and is used for verifying the combustion parameters.
Preferably, the cylinder pressure sensor group is a piezoresistive cylinder pressure sensor group.
Preferably, the set of piezoresistive cylinder pressure sensors comprises at least one piezoresistive cylinder pressure sensor.
Preferably, the piezoresistive cylinder pressure sensors are respectively mounted on the cylinder heads.
Preferably, the camshaft phase sensor is mounted on a 6n +1 tooth signal panel, and n is a positive integer.
Preferably, the 6n + 1-tooth signal panel can be a 6+ 1-tooth signal panel.
Preferably, the combustion parameter calculation module and the processor module are in data transmission in an SPI communication mode.
Preferably, the method further comprises the following steps: and the CAN communication module is connected with the output end of the processor module and is used for outputting the combustion state parameter result of the processor module to a receiving terminal.
According to the technical scheme, compared with the prior art, the invention provides a system for acquiring the cylinder pressure data of the engine in real time and calculating the combustion characteristic parameters in parallel, which comprises the following steps: the invention adopts the low-cost piezoresistive cylinder pressure sensor and the multi-microprocessor parallel computing architecture scheme, and has the advantages of simple composition, low cost, high computing speed and good real-time performance.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram of a system for real-time data acquisition and combustion characteristic parameter parallel computation of engine cylinder pressure according to the present invention;
FIG. 2 is a flow chart of a method for acquiring cylinder pressure data of an engine in real time and calculating combustion characteristic parameters in parallel;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the present embodiment discloses a system for acquiring engine cylinder pressure data in real time and calculating combustion characteristic parameters in parallel, including:
the pulse signal processing module is used for generating a cylinder pressure sampling synchronous signal;
the camshaft phase sensor is connected with the first input end of the pulse signal processing module and used for acquiring the phase of the camshaft;
the encoder is connected with the second input end of the pulse signal processing module and used for setting the number of cylinder pressure sampling points;
the first input end of the cylinder pressure signal sampling module is connected with the output end of the pulse signal processing module and is used for sampling cylinder pressure signals of all cylinders;
the cylinder pressure sensor group is connected with the second input end of the cylinder pressure signal sampling module and used for collecting cylinder pressure signals of all cylinders;
the at least two combustion parameter calculation modules are connected with the output end of the cylinder pressure signal sampling module; for calculation;
and the processor module is connected with the output end of the combustion parameter calculation module and is used for verifying the combustion parameters.
In one embodiment, the cylinder pressure sensor group is a piezoresistive cylinder pressure sensor group.
In a particular embodiment, the set of piezoresistive cylinder pressure sensors comprises at least one piezoresistive cylinder pressure sensor.
In one embodiment, piezoresistive cylinder pressure sensors are mounted on each cylinder head.
In one embodiment, the camshaft phase sensor is mounted on a 6n +1 tooth signal disc, n being a positive integer.
In one embodiment, the 6n +1 signal pad may be a 6+1 tooth signal pad.
In one embodiment, the module between the combustion parameter calculation module and the processor module adopts an SPI communication mode for data transmission.
In another embodiment, the CAN communication module is connected with the output end of the processor module and used for outputting the combustion state parameter result of the processor module to a receiving terminal.
Referring to fig. 2, a flow of a method for acquiring the cylinder pressure data of the engine in real time and calculating the combustion characteristic parameters in parallel is disclosed:
1) a piezoresistive cylinder pressure sensor is arranged on each cylinder head; a camshaft phase sensor group is arranged on the 6+1 tooth signal panel;
2) the pulse signal processing module receives signals of a camshaft phase sensor group and an encoder, generates synchronous output signals related to the motion phases of cylinders of the engine, and controls the cylinder pressure signal sampling module to sample;
3) the cylinder pressure signal sampling module is driven by a synchronous trigger signal of the pulse signal processing module to sample cylinder pressures of all cylinders to obtain a two-dimensional data queue between the cylinder pressure signal and a crank angle;
4) the combustion parameter calculation module shares the cylinder pressure data sampling and combustion state parameter calculation work of two cylinders at intervals to obtain a combustion state calculation result, and the calculation result is sent to the processor module in an internal SPI communication mode;
5) the processor module checks the combustion parameter calculation result, sends the checked calculation result to an engine control unit (EUC) through a CAN communication module, and executes related control by an ECU; the checking is to check the rationality of the calculation result, that is, to set a parameter result range, determine whether the parameter calculation result falls within the parameter result range, and if not, replace the parameter result with a pre-calibrated value.
In the method, the cylinder pressure signal sampling module receives the synchronous signal of the pulse signal processing module to obtain the relation data between the cylinder pressure signal and the corresponding crank angle (the number of cylinder pressure sampling points can be adjusted according to the specification of the encoder). The sampling of cylinder pressure and the calculation of combustion state parameters adopt a parallel framework, each combustion state parameter calculation module is only connected with two cylinder pressure sensors with the largest interval in the work doing sequence, after the sampling of the cylinder pressure of one cylinder which does work early is completed, the current combustion parameter calculation module starts to calculate relevant combustion parameters, and other combustion modules continue to perform the sampling of the cylinder pressure. The calculation which needs longer time is separated from the cylinder pressure sampling, so that the real-time requirement of the calculation is ensured, the performance requirement on a microprocessor chip is reduced, and the cost of the system is favorably reduced.
Solving the heat release rate based on the data between the cylinder pressure and the crank angle, wherein the solved mathematical model is an energy conservation equation:
wherein Q isBHeat given off for combustion, QWFor the heat to be transferred through the cylinder peripheral wall,
the engine crankshaft angle is shown, V is the cylinder volume, m is the system mass, u is the system specific heat energy, and P is the cylinder internal pressure.
On the premise of ensuring the engineering application precision, the heat transfer loss is ignored, and the solution equation is as follows:
wherein, CvT is the instantaneous temperature in the cylinder.
Solving equation (2) by using the Runge Kutta method, and using dQB/QBAnd (3) obtaining an instantaneous combustion heat release rate, and further calculating combustion state parameters CA10, CA50 and CA90 (a crank angle/CA ATDC corresponding to 10% of accumulated heat release of CA 10; a crank angle/CA ATDC corresponding to 50% of accumulated heat release of CA 50; and a crank angle/CA ATDC corresponding to 90% of accumulated heat release of CA 90). The mean indicated pressure IMEP value can be obtained by equation (3),
wherein, gamma is the crank link ratio.
Ignition advance angle correction strategy: under any operation condition, the IMEP value is used as a feedback value of the actual torque of the engine, the feedback value is compared with the target torque sent by the engine ECU, and the ignition advance angle is adjusted by taking 1 degree as an adjustment step according to the comparison result. If the actual torque fed back by IMEP is less than the target torque, the spark advance angle is advanced and knock is prevented with the pressure rise rate constrained until the actual torque is substantially equal to the target torque. If the actual torque fed back by IMEP is greater than the target torque, the adjustment process is reversed.
EGR rate (mass of exhaust gas entering the intake pipe to total mass of gas entering the cylinders) adjustment strategy: under any operating condition, CA50 is taken as a main feedback parameter of combustion phase, and whether the combustion phase of the current cycle is in a high-efficiency region or not is determined by combining parameters such as CA10, CA90 and the like (generally, CA50 is ideally between 10 and 15 degrees after top dead center). If CA50 is before 10 degrees after top dead center, a correction parameter is sent to the ECU that increases the EGR rate, the magnitude of which is proportional to how far CA50 deviates from the efficient zone. If CA50 lags top dead center by 15 degrees, a correction parameter is sent to the ECU that reduces the EGR rate.
And the rationality of the ignition advance angle and EGR rate correction parameters is tested. The combustion parameter calculation module inputs the correction parameters of the ignition advance angle and the EGR rate into the main microprocessor module through SPI communication, the correction parameters of the ignition advance angle and the EGR rate are respectively added with the current ignition angle and the EGR rate of the engine, and the confirmed result is in a calibration MAP (data table) under the current working condition of the engine (constrained by dynamic property and emission).
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention in a progressive manner. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. Engine cylinder pressure data real-time acquisition and combustion characteristic parameter parallel computing system, its characterized in that includes:
the pulse signal processing module is used for generating a cylinder pressure sampling synchronous signal;
the camshaft phase sensor is connected with the first input end of the pulse signal processing module and used for acquiring the phase of the camshaft;
the encoder is connected with the second input end of the pulse signal processing module and used for setting the number of cylinder pressure sampling points;
the first input end of the cylinder pressure signal sampling module is connected with the output end of the pulse signal processing module and is used for sampling cylinder pressure signals of all cylinders;
the cylinder pressure sensor group is connected with the second input end of the cylinder pressure signal sampling module and used for collecting cylinder pressure signals of all cylinders;
the at least two combustion parameter calculation modules are connected with the output end of the cylinder pressure signal sampling module; the device is used for calculating the combustion state parameters in real time in parallel;
and the processor module is connected with the output end of the combustion parameter calculation module and is used for verifying the combustion parameters.
2. The system for real-time collection of engine cylinder pressure data and parallel calculation of combustion characteristic parameters according to claim 1,
the cylinder pressure sensor group is a piezoresistive cylinder pressure sensor group.
3. The system for real-time collection of engine cylinder pressure data and calculation of combustion characteristic parameters according to claim 2,
the piezoresistive cylinder pressure sensor group comprises at least one piezoresistive cylinder pressure sensor.
4. The system for real-time collection of engine cylinder pressure data and parallel calculation of combustion characteristic parameters according to claim 3,
and the piezoresistive cylinder pressure sensors are respectively arranged on the cylinder heads of the cylinders.
5. The system for real-time collection of engine cylinder pressure data and parallel calculation of combustion characteristic parameters according to claim 1,
the camshaft phase sensor is arranged on a 6n +1 tooth signal panel, and n is a positive integer.
6. The system for real-time collection of engine cylinder pressure data and parallel calculation of combustion characteristic parameters according to claim 1,
and the combustion parameter calculation module and the processor module adopt an SPI communication mode for data transmission.
7. The system for real-time acquisition of engine cylinder pressure data and parallel computation of combustion characteristic parameters according to any one of claims 1-6, further comprising:
and the CAN communication module is connected with the output end of the processor module and is used for outputting the combustion state parameter result of the processor module to a receiving terminal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114109816A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | System and method for monitoring post-pump pulsating pressure of micro-miniature electric fuel pump |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080082250A1 (en) * | 2006-09-29 | 2008-04-03 | Husted Harry L | Cylinder-pressure-based electronic engine controller and method |
| CN100414085C (en) * | 2002-09-09 | 2008-08-27 | 丰田自动车株式会社 | Control device of internal combustion engine |
| CN101813033A (en) * | 2009-02-23 | 2010-08-25 | 通用汽车环球科技运作公司 | Be used for controlling the method and apparatus of explosive motor burning phase modulation |
| CN102472196A (en) * | 2010-02-16 | 2012-05-23 | 丰田自动车株式会社 | In-cylinder pressure estimation device for internal combustion engine |
| CN102493885A (en) * | 2011-12-14 | 2012-06-13 | 中国人民解放军装甲兵工程学院 | Electronic control system for combustion closed-loop control of diesel engine |
| CN102678362A (en) * | 2012-05-16 | 2012-09-19 | 联合汽车电子有限公司 | System of phase-free sensor for identifying one cylinder compression TDC (Top Dead Center) of three-cylinder engine |
| CN106795828A (en) * | 2014-09-03 | 2017-05-31 | 大陆汽车有限公司 | Method and apparatus for improving the combustion process occurred in the cylinder of explosive motor |
| CN106840686A (en) * | 2017-01-20 | 2017-06-13 | 湖南大学 | The on-line measuring device and detection method of control parameter under a kind of engine variable working condition |
| CN112213110A (en) * | 2020-09-29 | 2021-01-12 | 上汽通用五菱汽车股份有限公司 | Method and system for measuring phase of driving cam of high-pressure oil pump of gasoline engine and storage medium |
-
2021
- 2021-03-09 CN CN202110254614.2A patent/CN113029580B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414085C (en) * | 2002-09-09 | 2008-08-27 | 丰田自动车株式会社 | Control device of internal combustion engine |
| US20080082250A1 (en) * | 2006-09-29 | 2008-04-03 | Husted Harry L | Cylinder-pressure-based electronic engine controller and method |
| CN101813033A (en) * | 2009-02-23 | 2010-08-25 | 通用汽车环球科技运作公司 | Be used for controlling the method and apparatus of explosive motor burning phase modulation |
| CN102472196A (en) * | 2010-02-16 | 2012-05-23 | 丰田自动车株式会社 | In-cylinder pressure estimation device for internal combustion engine |
| CN102493885A (en) * | 2011-12-14 | 2012-06-13 | 中国人民解放军装甲兵工程学院 | Electronic control system for combustion closed-loop control of diesel engine |
| CN102678362A (en) * | 2012-05-16 | 2012-09-19 | 联合汽车电子有限公司 | System of phase-free sensor for identifying one cylinder compression TDC (Top Dead Center) of three-cylinder engine |
| CN106795828A (en) * | 2014-09-03 | 2017-05-31 | 大陆汽车有限公司 | Method and apparatus for improving the combustion process occurred in the cylinder of explosive motor |
| CN106840686A (en) * | 2017-01-20 | 2017-06-13 | 湖南大学 | The on-line measuring device and detection method of control parameter under a kind of engine variable working condition |
| CN112213110A (en) * | 2020-09-29 | 2021-01-12 | 上汽通用五菱汽车股份有限公司 | Method and system for measuring phase of driving cam of high-pressure oil pump of gasoline engine and storage medium |
Non-Patent Citations (3)
| Title |
|---|
| ZHAO, WENSHENG: "Development of a skeletal mechanism for heavy-duty engines fuelled by diesel and natural gas", 《 APPLIED THERMAL ENGINEERING》, vol. 123, 31 December 2017 (2017-12-31), pages 1060 - 1071, XP085124864, DOI: 10.1016/j.applthermaleng.2017.05.175 * |
| 周能辉: ""汽油HCCI发动机闭环反馈控制的研究"", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》, no. 04, 15 April 2009 (2009-04-15), pages 21 - 93 * |
| 方成;高国景;杨福源;项旭昇;李进;: "柴油机控制用燃烧状态分析单元开发研究", 内燃机工程, no. 01, 15 February 2014 (2014-02-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109816A (en) * | 2021-11-05 | 2022-03-01 | 中国航发西安动力控制科技有限公司 | System and method for monitoring post-pump pulsating pressure of micro-miniature electric fuel pump |
| CN114109816B (en) * | 2021-11-05 | 2023-12-22 | 中国航发西安动力控制科技有限公司 | System and method for monitoring post-pump pulsation pressure of miniature electric fuel pump |
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