WO2004011795A1 - Sistema de control de la temperatura del aire de admisión en motores diesel de combustión interna - Google Patents
Sistema de control de la temperatura del aire de admisión en motores diesel de combustión interna Download PDFInfo
- Publication number
- WO2004011795A1 WO2004011795A1 PCT/ES2002/000369 ES0200369W WO2004011795A1 WO 2004011795 A1 WO2004011795 A1 WO 2004011795A1 ES 0200369 W ES0200369 W ES 0200369W WO 2004011795 A1 WO2004011795 A1 WO 2004011795A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- intake air
- resistance
- internal combustion
- intake
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/13—Combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0414—Air temperature
-
- 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
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
-
- 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
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
- F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
-
- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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 an intake air temperature control system in internal combustion diesel engines, based on the provision of a heating and control module that is located at the entrance of the corresponding engine intake.
- Module that fundamentally includes a resistance formed by two sections of different metal alloys, welded by one of its ends, to form a thermocouple, which in combination with a control circuit, not only allows energy to be supplied to the flow of air that passes through it, but also know its operating temperature.
- the object of the invention is to provide a system that, applied to each of the intake inputs of an internal combustion diesel engine, in addition to allowing automatic control and / or regulation of the intake air temperature, also acts as an expense sensor. mass, that is, as a flow sensor in each of said intake inputs.
- these heating resistors do not give any information on the temperature at which they work, which results in the impossibility of carrying out a closed loop regulation, which leads to not being able to work at elevated temperatures (500-1,200 ° C ), since at these temperatures a failure in the control may result in the destruction of the resistance.
- thermocouple To implement the regulation function with the heaters described in the patents referred to above, they can be welded to a standard thermocouple, although this assembly, in addition to the associated cost and industrialization problems, has functionality problems since if the thermocouple that is welded is made with small section wires, it will be very weak and the weld will break easily due to the expansion and contraction of the resistance when heated and cooled successively, as well as the motor vibrations, since there is no to forget that the element is placed at the entrance of the intake pipes, in the cylinder head and very close to the cylinders.
- thermocouple built with relatively large section wires, but in this way the heat flows from the measuring point through the thermocouple wire and the measure is false.
- the fact of welding a thermocouple to the resistance and that there is a piece of wire in the path of the air flow creates a singularity on the surface of the resistance, at the point of measurement, that makes the measured temperature in any case wrong.
- the system that has been recommended has been conceived to solve the problem described above, and more specifically to be able to control the intake air temperature of automotive diesel engines, which means that it is possible to dynamically control the amount of heat supplied to the flow of air entering each engine cylinder.
- the system of the invention is based on using a heating resistance formed by two sections, each with metallurgical properties such that the union between them forms a thermocouple which, in combination with a control circuit, allows to control and measure the temperature of the intake air to the extent that the temperature of said intake air is constant and independent of the ambient temperature.
- the two heating resistance sections consist of different metal alloys welded together, so that the joint should preferably be located in the center of the section that it flows through the flow, so that the module that forms the resistance with the control circuit is arranged at the entrance of the intake.
- thermocouples work, that is to say in the Seebeck effect that says: "if two different metal wires are joined forming a closed circuit and their joints are placed at different temperatures, a weak current will appear in the circuit that can be measured. " If the circuit is opened, what will be measured is the electromotive force generated by the temperature difference between the joints, not forgetting that what is observed is a thermoelectric phenomenon, that is, the one who generates the electromotive force is the cable and not the union, since this only serves to close the circuit.
- thermocouple because it is formed by the union of two metals and at its ends a voltage can be measured that will be a function of the temperature at which the union is, so that the fundamental characteristic of the thermocouple is that the materials that form the joint, both for its metallurgical properties and for its physical dimensions and mechanical properties, allow the thermocouple to be used alternatively as a resistance to heating or as thermocouple itself.
- control circuit As for the control circuit that is also part of the system, it is connected between the output terminals of the resistor, so that at the output not connected to ground of such resistance a voltage signal is obtained, which is previously conditioned by An amplifier is the temperature signal of the resistance. All this so that when there is no power activation signal the resistance behaves like a thermocouple.
- the control circuit When there is a power activation signal, the control circuit supplies energy pulses to the resistance and after each pulse supplied compares this temperature signal with a previously set reference temperature signal, so that while the resistance temperature is higher than the reference, the control circuit does nothing and when the resistance temperature is lower than the reference temperature a new pulse of energy will be supplied to the resistance in order to raise its temperature and on average keep it at temperature of reference to be set. That is, when the power activation signal is activated, the control circuit will automatically do what is necessary to maintain the temperature of the resistance at the reference temperature at which the resistance is desired to work.
- a first method would consist of the following operational phases:
- a second method to estimate the flow is based solely on the plate temperature measurement, assuming some hypotheses according to the equation where Q is the flow to be known, p is the density of the gas, V c the volume of the cylinder and t the time during which the cylinder is filling. V c and t are data that we know and know that p depends on the temperature of the gas that is a function of the temperature of the resistance, and that is the data we measure.
- a third method for estimating the flow is based on providing energy continuously in order to keep the plate temperature constant, so that the instantaneous measure of the energy needed to maintain that temperature would give the flow the same way as a flow meter hot yarn
- all methods are based on the use of the intrinsic thermocouple heating resistance, in accordance with the aforementioned characteristics.
- Figure 1 shows a view of the scheme corresponding to the heating resistance mounted on the conduit that channels the intake flow, and whose resistance is formed by two sections joined at a point that corresponds to the center of the channeling of that flow. of admission. These two sections of resistance are made of different metal alloys.
- Figure 2. Shows the scheme corresponding to the paths for the intake and exhaust gases established in an engine, in which the system of the invention is included in correspondence with the intake inlet.
- Figure 3. Shows the scheme corresponding to the practical application of the system of the invention, - specifically the automatic control of the plate temperature.
- the system of the invention intended to heat the intake air in internal combustion diesel engines, is based on using a constant resistivity electrical resistance over the entire operating temperature range, being the resistance formed by two sections (1) and (l 1 ) joined together through one of its ends, whose union is referenced with (2) in Figure 1.
- Those two sections (1) and (l 1 ) of the electrical resistance are of different alloy materials.
- the resistance as a whole due to the aforementioned characteristics, forms a thermocouple that, in addition to allowing energy to be supplied to the air flow, allows its operating temperature to be known.
- Figure 2 shows the scheme of an internal combustion engine, where a cylinder is visible
- the system thus constituted allows it to be used as an automatic intake air temperature regulator, as a thermocouple type temperature sensor and as a mass expenditure sensor.
- Figure 3 shows the operation scheme, being able to observe the two functions for which said system can be used, as well as the Vp output that indicates the voltage at the terminal (8) of the resistance section (1) that is not set to ground, the signal of that output Vp being previously conditioned by an amplifier (9), signal to be used for the flowmeter function.
- the system When there is no power activation signal (10), the system will indicate the plate temperature, measured in terminals (8-8 ') of the resistance formed by sections (1) and (l 1 ), and whose signal is previously conditioned by an amplifier (12).
- the control circuit supplies energy pulses to the resistance and after each pulse supplied compares this temperature signal with a previously set reference temperature signal, so that as long as the resistance temperature is greater than that of reference, the control circuit does nothing and when the temperature of the resistance is lower than the reference temperature a new pulse of energy will be supplied to the resistance in order to raise its temperature and on average keep it at the temperature of reference to be set. That is, when the power activation signal (10) is activated the control circuit will automatically do what is necessary to maintain the temperature of the resistance at the reference temperature at which the resistance is desired to work.
- a third function that derives from the other two, is the flowmeter, usually using platinum, also known as hot wire, based on its operation in putting two platinum wires in the air flow, so that one of them measures the temperature of the gas and the other, the hot wire, measures the flow, which can be done because the resistivity of the platinum varies with the temperature.
- Said operating principle consists in measuring the amount of power that it is necessary to contribute to the hot wire and that this yields to the air flow by conduction and by convection, to keep the temperature difference between the two wires, hot and cold, constant wire.
- a first method of estimating the flow is based on the following operational phases:
- the plate temperature is measured, which indirectly informs us of the temperature of the air flow at that moment. - Wait until the plate temperature is stabilize, measuring that time. Temperature measurement again, which will inform the ambient temperature of the flow. - The difference in temperatures and the time it has taken to reach it, gives all the necessary information to calculate the flow rate.
- a second method to estimate the flow is based solely on the measurement of plate temperature and on assuming some hypotheses:
- Vc the volume of the cylinder
- t the time during which the cylinder is filling.
- a third method of estimating the flow rate may be applicable in engines where work is carried out at a constant intake temperature, in which case the system would provide energy continuously in order to keep the plate temperature constant.
- the power supplied at each moment to maintain the temperature of the constant resistance would give the flow rate in the same way as a hot wire flow meter.
- This power is measured from the signal Vp (fig. 3 and fig. 4) since the resistance value is constant and Vp indicates the voltage supplied and the time during which it is supplied.
- This method is equivalent to the previous method by setting the density of the gas entering the cylinder.
- FIG 4 shows the connection of the intake air temperature control circuit, in accordance with the scheme shown in Figure 3, with the electronic engine control unit (13), where an interface is arranged (14), which can be analog or digital, of the V p and temperature signals at the resistance terminals.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Volume Flow (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES02751188T ES2286266T3 (es) | 2002-07-24 | 2002-07-24 | Sistema de control de la temperatura del aire de admision en motores diesel de combustion interna. |
AT02751188T ATE360753T1 (de) | 2002-07-24 | 2002-07-24 | System zur steuerung der einlasslufttemperatur in dieselverbrennungsmotoren |
PCT/ES2002/000369 WO2004011795A1 (es) | 2002-07-24 | 2002-07-24 | Sistema de control de la temperatura del aire de admisión en motores diesel de combustión interna |
DE60219831T DE60219831T2 (de) | 2002-07-24 | 2002-07-24 | System zur steuerung der einlasslufttemperatur in dieselverbrennungsmotoren |
AU2002368124A AU2002368124A1 (en) | 2002-07-24 | 2002-07-24 | System for controlling the intake air temperature in diesel internal combustion engines |
US10/522,040 US7278409B2 (en) | 2002-07-24 | 2002-07-24 | System for controlling the temperature of the intake air in internal combustion diesel engines |
EP02751188A EP1536129B1 (en) | 2002-07-24 | 2002-07-24 | System for controlling the intake air temperature in diesel internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2002/000369 WO2004011795A1 (es) | 2002-07-24 | 2002-07-24 | Sistema de control de la temperatura del aire de admisión en motores diesel de combustión interna |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004011795A1 true WO2004011795A1 (es) | 2004-02-05 |
Family
ID=30775932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2002/000369 WO2004011795A1 (es) | 2002-07-24 | 2002-07-24 | Sistema de control de la temperatura del aire de admisión en motores diesel de combustión interna |
Country Status (7)
Country | Link |
---|---|
US (1) | US7278409B2 (es) |
EP (1) | EP1536129B1 (es) |
AT (1) | ATE360753T1 (es) |
AU (1) | AU2002368124A1 (es) |
DE (1) | DE60219831T2 (es) |
ES (1) | ES2286266T3 (es) |
WO (1) | WO2004011795A1 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7934491B2 (en) | 2005-01-21 | 2011-05-03 | Nagares, S.A. | Heater module for the admission gases of an automobile engine with an overheating protection and/or closed-loop regulation |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060196484A1 (en) * | 2003-07-28 | 2006-09-07 | Gill Alan P | Capture and burn air heater |
EP1651911A4 (en) * | 2003-07-28 | 2010-09-01 | Phillips & Temro Ind Inc | CONTROL FOR INTAKE AIR HEATING DEVICE |
US7614388B2 (en) * | 2005-05-09 | 2009-11-10 | Phillips & Temro Industries Inc. | Flanged heating element with thermal expansion joint |
FR2887589B1 (fr) * | 2005-06-27 | 2007-09-14 | Renault Sas | Procede de controle d'un moteur a injection directe lors du demarrage a froid et moteur correspondant |
US8003922B2 (en) * | 2006-02-17 | 2011-08-23 | Phillips & Temro Industries Inc. | Solid state switch with over-temperature and over-current protection |
US8981264B2 (en) * | 2006-02-17 | 2015-03-17 | Phillips & Temro Industries Inc. | Solid state switch |
EP2525073B1 (de) * | 2011-05-16 | 2017-07-12 | Ford Global Technologies, LLC | Brennkraftmaschine mit Ansauglufterwärmung und Verfahren zum Betreiben einer derartigen Brennkraftmaschine |
EP2525072B1 (de) * | 2011-05-16 | 2014-01-01 | Ford Global Technologies, LLC | Verfahren zur Erwärmung der Verbrennungsluft einer Brennkraftmaschine und Brennkraftmaschine zur Durchführung eines derartigen Verfahrens |
US20160153407A1 (en) * | 2013-07-03 | 2016-06-02 | Hidria Aet | Air intake heater system and methods |
US10221817B2 (en) * | 2016-05-26 | 2019-03-05 | Phillips & Temro Industries Inc. | Intake air heating system for a vehicle |
US10077745B2 (en) * | 2016-05-26 | 2018-09-18 | Phillips & Temro Industries Inc. | Intake air heating system for a vehicle |
US20190120183A1 (en) * | 2017-10-24 | 2019-04-25 | GM Global Technology Operations LLC | Heat source in cold vehicle conditions |
CN114675625A (zh) * | 2022-03-21 | 2022-06-28 | 潍柴动力股份有限公司 | 一种控制器控制方法及装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60116849A (ja) * | 1983-11-28 | 1985-06-24 | Toyota Motor Corp | 内燃機関の吸気加熱装置 |
EP1136695A1 (en) * | 2000-03-17 | 2001-09-26 | IVECO FIAT S.p.A. | Diagnostic system for an electric heater of an air-intake manifold of a diesel engine |
US20020000221A1 (en) * | 2000-05-26 | 2002-01-03 | Alois Kilb | Device for preheating air in a diesel engine intake line |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US3985112A (en) * | 1973-07-13 | 1976-10-12 | Jordan Wilmer C | Methods and apparatus for improving fuel vaporization in internal combustion engines |
US4345141A (en) * | 1979-11-15 | 1982-08-17 | Little William D | Electrical fuel preheater assembly |
US4375799A (en) * | 1980-04-16 | 1983-03-08 | Swanson Clifford S | Fuel vaporization system |
US4491118A (en) * | 1982-09-28 | 1985-01-01 | Wooldridge Bobby M | Fuel mixture method and apparatus employing an electrically heated screen |
JPS604815A (ja) * | 1983-06-23 | 1985-01-11 | Nippon Soken Inc | 流量測定装置 |
GB8824114D0 (en) * | 1988-10-14 | 1988-11-23 | Holden J | Vaporiser nozzle |
US5845485A (en) * | 1996-07-16 | 1998-12-08 | Lynntech, Inc. | Method and apparatus for injecting hydrogen into a catalytic converter |
US5988146A (en) | 1998-04-15 | 1999-11-23 | Phillips & Temro Industries Inc. | Modular air intake heater |
US6152117A (en) | 1998-10-07 | 2000-11-28 | Phillips & Temro Industries Inc. | Air intake heater with integrated power and ground connector |
US6040557A (en) | 1998-12-10 | 2000-03-21 | Phillips & Temro Industries Inc. | Drop-in air heater for an engine with heater support frame having prongs engaging heater holders |
-
2002
- 2002-07-24 DE DE60219831T patent/DE60219831T2/de not_active Expired - Lifetime
- 2002-07-24 US US10/522,040 patent/US7278409B2/en not_active Expired - Lifetime
- 2002-07-24 ES ES02751188T patent/ES2286266T3/es not_active Expired - Lifetime
- 2002-07-24 AT AT02751188T patent/ATE360753T1/de not_active IP Right Cessation
- 2002-07-24 EP EP02751188A patent/EP1536129B1/en not_active Expired - Lifetime
- 2002-07-24 WO PCT/ES2002/000369 patent/WO2004011795A1/es active IP Right Grant
- 2002-07-24 AU AU2002368124A patent/AU2002368124A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60116849A (ja) * | 1983-11-28 | 1985-06-24 | Toyota Motor Corp | 内燃機関の吸気加熱装置 |
EP1136695A1 (en) * | 2000-03-17 | 2001-09-26 | IVECO FIAT S.p.A. | Diagnostic system for an electric heater of an air-intake manifold of a diesel engine |
US20020000221A1 (en) * | 2000-05-26 | 2002-01-03 | Alois Kilb | Device for preheating air in a diesel engine intake line |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7934491B2 (en) | 2005-01-21 | 2011-05-03 | Nagares, S.A. | Heater module for the admission gases of an automobile engine with an overheating protection and/or closed-loop regulation |
Also Published As
Publication number | Publication date |
---|---|
US20050235970A1 (en) | 2005-10-27 |
ES2286266T3 (es) | 2007-12-01 |
EP1536129B1 (en) | 2007-04-25 |
AU2002368124A1 (en) | 2004-02-16 |
DE60219831D1 (de) | 2007-06-06 |
ATE360753T1 (de) | 2007-05-15 |
US7278409B2 (en) | 2007-10-09 |
DE60219831T2 (de) | 2008-01-24 |
EP1536129A1 (en) | 2005-06-01 |
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