ES2263367B1 - ELECTRONIC CONTROL UNIT FOR CONTROLLING THE OPERATION OF A TRANSFORMED DIESEL ENGINE FOR LIQUID NATURAL GAS. - Google Patents
ELECTRONIC CONTROL UNIT FOR CONTROLLING THE OPERATION OF A TRANSFORMED DIESEL ENGINE FOR LIQUID NATURAL GAS. Download PDFInfo
- Publication number
- ES2263367B1 ES2263367B1 ES200500105A ES200500105A ES2263367B1 ES 2263367 B1 ES2263367 B1 ES 2263367B1 ES 200500105 A ES200500105 A ES 200500105A ES 200500105 A ES200500105 A ES 200500105A ES 2263367 B1 ES2263367 B1 ES 2263367B1
- Authority
- ES
- Spain
- Prior art keywords
- control unit
- unit according
- ignition
- transformed
- natural gas
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 claims 1
- 230000009466 transformation Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 2
- 235000013570 smoothie Nutrition 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000012937 correction Methods 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Centralita electrónica para el control del funcionamiento de un motor diesel transformado para gas natural licuado. La centralita está conectada a sensores que le proporcionan información, emitiendo señales de accionamiento, e interpretando las señales del pedal del acelerador y las del tacógrafo. Característicamente la centralita está conectada mediante una línea CAN a módulos correspondientes al encendido, a la mariposa de regulación, a los sensores que proporcionan datos, y a la seguridad del motor, cuyos módulos también están conectados entre sí mediante la línea CAN. La indicada centralita puede estar comunicada con un ordenador donde se introducirán los parámetros, obteniendo sus valores instantáneos, y donde se almacenarán los datos anteriores.Electronic control unit for the control of the operation of a transformed diesel engine for liquefied natural gas. The control unit is connected to sensors that provide information, emitting drive signals, and interpreting the accelerator pedal and tachograph signals. Characteristically, the control unit is connected via a CAN line to modules corresponding to the ignition, to the throttle, to the sensors that provide data, and to the safety of the motor, whose modules are also connected to each other through the CAN line. The indicated control unit can be communicated with a computer where the parameters will be entered, obtaining their instantaneous values, and where the previous data will be stored.
Description
Centralita electrónica para el control del funcionamiento de un motor diesel transformado para gas natural licuado.Electronic control unit for the control of operation of a diesel engine transformed for natural gas smoothie.
Centralita electrónica para el control del funcionamiento de un motor diesel transformado para gas natural licuado.Electronic control unit for the control of operation of a diesel engine transformed for natural gas smoothie.
Son conocidos algunos sistemas para la
transformación de motores diesel en motores que funcionan con gas
natural licuado, en los cuales para el suministro del gas se
utilizan dos válvulas, una principal y una para el ralentí, y para
el control del encendido se utiliza un encoder de 60 pulsos por
vuel-
ta.Some systems are known for the transformation of diesel engines into engines that run on liquefied natural gas, in which two valves, one main and one for idling, are used for gas supply, and an encoder is used for ignition control. 60 pulses per revolution
ta.
La propia solicitante de la presente invención llevó a cabo unos perfeccionamientos en dichos medios de transformación que fueron objeto de la patente de invención nº 200401095, siendo característico de dichos perfeccionamientos el hecho de que el control del funcionamiento del motor se consigue mediante una centralita electrónica autoadaptativa a la que se conecta un conjunto de elementos electromecánicos interconectados, tales como sensores que le proporcionan información, emitiendo señales de accionamiento e interpretando las señales del pedal del acelerador y las del tacógrafo.The applicant of the present invention itself carried out some improvements in these means of transformation that were the subject of the invention patent no. 200401095, being characteristic of such improvements the fact that control of engine operation is achieved by means of a self-adaptive electronic switchboard to which connect a set of interconnected electromechanical elements, such as sensors that provide information, emitting drive signals and interpreting the pedal signals of the Accelerator and tachograph.
Es objeto de esta invención el desarrollo y
realización de una centralita electrónica para el control del
funcionamiento de un motor diesel transformado para gas natural
licuado, aplicable principalmente a los medios de transformación
objeto de la indicada patente nº 200401095, consiguiendo una
simplificación de la estructura general de dichos medios y
desarrollando una arquitectura del sistema electrónico de control
altamente eficaz y realizado de forma modular, estando todos los
módulos conectados entre sí mediante una línea CAN,
correspondiendo dichos módulos al encendido, a la mariposa de
regulación, a los sensores que proporcionan datos, y a la seguridad
del
motor.The object of this invention is the development and realization of an electronic control unit for the control of the operation of a transformed diesel engine for liquefied natural gas, mainly applicable to the transformation means object of the aforementioned patent No. 200401095, achieving a simplification of the general structure of said means and developing a highly efficient electronic control system architecture and implemented in a modular way, all modules being connected to each other by a CAN line, said modules corresponding to the ignition, the throttle, the sensors that provide data , and the safety of
engine.
Cada módulo procesa e interpreta la información de sus sensores y/o actuadores y lanza información codificada digital a la línea CAN para que sea usada por otros módulos.Each module processes and interprets the information of its sensors and / or actuators and launches encrypted information digital to the CAN line to be used by other modules.
Estas y otras características se desprenderán mejor de la descripción detallada que sigue, para facilitar la cual se acompaña de dos láminas de dibujos en las que se ha representado un caso práctico de realización que se cita solamente a título de ejemplo no limitativo del alcance de la presente invención.These and other features will come off better than the detailed description that follows, to facilitate which It is accompanied by two sheets of drawings in which it has been represented a case study that is cited only by way of non-limiting example of the scope of the present invention.
En los dibujos:In the drawings:
La figura 1 corresponde al esquema de la estructura general de los medios de transformación, yFigure 1 corresponds to the scheme of the general structure of the means of transformation, and
la figura 2 corresponde al esquema modular por bloques de la arquitectura del sistema electrónico de control.Figure 2 corresponds to the modular scheme by Architecture blocks of the electronic control system.
La estructura general de los medios de transformación de un motor diesel a gas natural licuado, según figura 1, comprende un compresor (1) en la entrada de aire (A) y una turbina (2) en la línea de los gases de escape (E), seguida de una sonda \lambda (3) y de una sonda de temperatura (4). En el bloque del motor (M) se incorpora un sensor de detonación (5), un sensor (6) de velocidad de rotación del motor y de posición referencial (encoder) con referencia posicional (7) del motor, y un sensor (8) de temperatura del agua de refrigeración del motor.The general structure of the means of transformation of a diesel engine to liquefied natural gas, according to Figure 1, comprises a compressor (1) in the air inlet (A) and a turbine (2) in the exhaust line (E), followed by a λ probe (3) and a temperature probe (4). At engine block (M) a knock sensor (5) is incorporated, a sensor (6) motor rotation speed and position reference (encoder) with positional reference (7) of the motor, and a engine cooling water temperature sensor (8).
El aire a la salida del compresor (1) pasa por un intercooler (9) y luego recibe el gas (G) a través de una válvula proporcional (10).The air at the outlet of the compressor (1) passes through an intercooler (9) and then receives the gas (G) through a proportional valve (10).
La mezcla aire-gas llega a la válvula de mariposa motorizada (11) de carga del motor y pasa luego por un sensor (12) de presión de la admisión y por un sensor (13) de temperatura antes de llegar al motor (M), el cual presenta un sensor (14) de la temperatura del aceite.The air-gas mixture reaches the motorized butterfly valve (11) of engine load and then passes by an intake pressure sensor (12) and by a sensor (13) of temperature before reaching the motor (M), which has a oil temperature sensor (14).
El esquema modular por bloques del sistema electrónico del control, según figura 2, comprende el módulo-centralita (15) instalado en la cabina del vehículo con las siguientes funciones: contiene el programa principal de gestión del motor; interpreta la posición del pedal (P) del acelerador y por tanto las necesidades de potencia del conductor del vehículo; e interpreta la señal del tacógrafo (T) acorde con la velocidad del vehículo (ésta no debe ser superior a la máxima legalmente autorizada según el vehículo).The modular block scheme of the system electronic control, according to figure 2, comprises the switchboard module (15) installed in the cab of the vehicle with the following functions: contains the program main engine management; interpret pedal position (P) of the accelerator and therefore the power needs of the vehicle driver; and interprets the signal from the tachograph (T) according to the speed of the vehicle (it must not exceed the maximum legally authorized according to the vehicle).
Esta centralita (15) puede comunicarse con un ordenador (O) al objeto de: introducir actualizaciones del programa principal en lo referente a los parámetros; leer datos del funcionamiento del sistema obteniendo los valores instantáneos de todos los parámetros; y almacenar los datos anteriores.This switchboard (15) can communicate with a computer (O) in order to: introduce program updates principal in relation to the parameters; read data from system operation obtaining the instantaneous values of all parameters; and store the previous data.
El módulo (16) corresponde al encendido y tiene las siguientes funciones: control (17) para la generación de la chispa en las bujías según el orden de encendido establecido en los seis cilindros; control de la válvula proporcional (10) de aportación de gas; control (18) (opcional) de las secuencias de los inyectores para la aportación de gas. Este módulo (16) se nutre de la información procedente del encoder (6, 7) accionado por el propio motor y que suministra señal frecuencial de velocidad y de posición del pistón del primer cilindro.The module (16) corresponds to the ignition and has The following functions: control (17) for the generation of the spark in the spark plugs in the order of ignition established in the six cylinders; proportional valve control (10) of gas supply; control (18) (optional) of the sequences of the injectors for the contribution of gas. This module (16) is nurtured of the information from the encoder (6, 7) operated by the own motor and that supplies frequency signal of speed and of piston position of the first cylinder.
El módulo (19) corresponde a la válvula de mariposa (11) con la función de control de dicha válvula motorizada y de carga de la mezcla al motor. También se puede controlar una válvula de mariposa motorizada secundaria (20) (opcional) para el control de la presión de soplado del turbo compresor.The module (19) corresponds to the valve throttle (11) with the control function of said motorized valve and loading the mixture into the engine. You can also control a secondary motorized butterfly valve (20) (optional) for the control of the blowing pressure of the turbo compressor.
El módulo (21) corresponde a los sensores de los que se adquieren los datos y tiene las siguientes funciones: recoger información de la mayoría de sensores analógicos y digitales del motor (3, 12, 13 y 8) y acondicionar dichas señales y procesarlas.The module (21) corresponds to the sensors of the The data is acquired and has the following functions: collect information from most analog sensors and engine digital (3, 12, 13 and 8) and condition these signals and process them
El módulo (22) corresponde a la seguridad del motor y tiene las siguientes funciones: interpretar y procesar la información procedente del sensor piezoeléctrico (5), del sensor (4), y del sensor (14). Con ello se pueden efectuar correcciones a nivel del avance de encendido, y de presión máxima del colector de admisión para proteger el motor contra un exceso de carga térmica y mecánica.The module (22) corresponds to the safety of the engine and has the following functions: interpret and process the information from the piezoelectric sensor (5), from the sensor (4), and of the sensor (14). With this, corrections can be made to ignition advance level, and maximum manifold pressure intake to protect the engine against excessive thermal load and mechanics.
La invención, dentro de su esencialidad, puede ser llevada a la práctica en otras formas de realización que difieran solo en detalle de la indicada únicamente a título de ejemplo, a las cuales alcanzará igualmente la protección que se recaba. Podrá, pues, realizarse esta centralita electrónica para el control del funcionamiento de un motor diesel transformado para gas natural licuado, con los componentes y accesorios más adecuados, pudiendo los elementos componentes ser sustituidos por otros técnicamente equivalentes, por quedar todo ello comprendido dentro del espíritu de las reivindicaciones.The invention, within its essentiality, can be put into practice in other embodiments that differ only in detail from that indicated solely by way of example, which will also achieve the protection that collect. It will be possible, then, to make this electronic switchboard to the control of the operation of a transformed diesel engine for liquefied natural gas, with the most components and accessories suitable, being able to replace the component elements with other technically equivalent, for all that is understood within the spirit of the claims.
Claims (7)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200500105A ES2263367B1 (en) | 2005-01-20 | 2005-01-20 | ELECTRONIC CONTROL UNIT FOR CONTROLLING THE OPERATION OF A TRANSFORMED DIESEL ENGINE FOR LIQUID NATURAL GAS. |
EP05747263A EP1744044A1 (en) | 2004-05-07 | 2005-05-05 | Improvements to means for transforming a diesel engine into a liquefied natural gas engine |
PCT/ES2005/000241 WO2005108762A1 (en) | 2004-05-07 | 2005-05-05 | Improvements to means for transforming a diesel engine into a liquefied natural gas engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200500105A ES2263367B1 (en) | 2005-01-20 | 2005-01-20 | ELECTRONIC CONTROL UNIT FOR CONTROLLING THE OPERATION OF A TRANSFORMED DIESEL ENGINE FOR LIQUID NATURAL GAS. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2263367A1 ES2263367A1 (en) | 2006-12-01 |
ES2263367B1 true ES2263367B1 (en) | 2007-10-01 |
Family
ID=37810140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES200500105A Expired - Fee Related ES2263367B1 (en) | 2004-05-07 | 2005-01-20 | ELECTRONIC CONTROL UNIT FOR CONTROLLING THE OPERATION OF A TRANSFORMED DIESEL ENGINE FOR LIQUID NATURAL GAS. |
Country Status (1)
Country | Link |
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ES (1) | ES2263367B1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2865661B2 (en) * | 1987-02-18 | 1999-03-08 | 株式会社日立製作所 | Engine state discrimination type adaptive controller |
FR2697585B1 (en) * | 1992-10-29 | 1995-01-06 | Solex | Motor control system with motorized throttle body. |
IT1308379B1 (en) * | 1999-02-19 | 2001-12-17 | Magneti Marelli Spa | METHOD OF SELF-ADAPTATION OF TITLE CONTROL IN AN INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE. |
GB0208004D0 (en) * | 2002-04-08 | 2002-05-15 | Diesel Autogas Systems Ltd | Multi-point / sequential diesel LPG system |
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2005
- 2005-01-20 ES ES200500105A patent/ES2263367B1/en not_active Expired - Fee Related
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ES2263367A1 (en) | 2006-12-01 |
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