WO2011101891A1 - 内燃機関の排気装置 - Google Patents
内燃機関の排気装置 Download PDFInfo
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- WO2011101891A1 WO2011101891A1 PCT/JP2010/000978 JP2010000978W WO2011101891A1 WO 2011101891 A1 WO2011101891 A1 WO 2011101891A1 JP 2010000978 W JP2010000978 W JP 2010000978W WO 2011101891 A1 WO2011101891 A1 WO 2011101891A1
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- exhaust
- passage
- egr
- temperature
- internal combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2053—By-passing catalytic reactors, e.g. to prevent overheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/101—Three-way catalysts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
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- 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
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
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- 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
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
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- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
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- 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
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
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- 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
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
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- 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
Definitions
- the present invention relates to an exhaust temperature raising device that is provided in an exhaust passage of an internal combustion engine to raise the temperature of exhaust gas, and an exhaust device that has a recirculation device that circulates exhaust gas.
- EGR exhaust Gas Recirculation
- NOx nitrogen oxide
- an EGR passage that connects an exhaust passage and an intake passage on the downstream side of the exhaust purification catalyst is provided.
- This engine is provided with a bypass passage that connects a point upstream of the exhaust purification catalyst in the exhaust passage and the EGR passage.
- exhaust gas having a relatively high temperature is obtained from the bypass passage, so that the combustion property of the engine is improved.
- the engine also includes a burner for heating the filter to burn and remove particulates adhering to the filter carrying the catalyst.
- the engine disclosed in Patent Document 2 is provided with an EGR cooler that cools exhaust gas in the EGR passage.
- the cooling water introduced into the EGR cooler is heated when the engine water temperature is low, condensation of moisture in the EGR cooler can be suppressed.
- the object of the present invention is to promote the removal of condensed water in the EGR passage.
- An exhaust temperature raising device that is provided in an exhaust passage of the internal combustion engine and raises the temperature of the exhaust gas
- An exhaust purification catalyst provided in the exhaust passage downstream of the exhaust temperature raising device
- An EGR passage connecting the exhaust passage downstream of the exhaust purification catalyst and the intake passage of the internal combustion engine
- a bypass passage connecting the EGR passage with a point downstream of the exhaust temperature raising device in the exhaust passage and upstream of the exhaust purification catalyst
- a bypass valve for opening and closing the bypass passage
- An exhaust system for an internal combustion engine comprising a controller for controlling the bypass valve, The controller controls to open the bypass valve when the temperature of the EGR passage is lower than a predetermined reference value, and the exhaust gas heated by the exhaust temperature raising device passes through the EGR passage.
- An exhaust device for an internal combustion engine to be supplied to an intake passage.
- the bypass passage is downstream of the exhaust gas temperature raising device and upstream of the exhaust purification catalyst and the EGR passage is connected, the exhaust gas heated by the exhaust gas temperature raising device is It can be supplied to the intake passage through the EGR passage, and a sufficient amount of heat can be obtained by the exhaust gas temperature raising device.
- the controller controls to open the bypass valve when the temperature of the EGR passage is lower than a predetermined reference value. Therefore, when the engine water temperature is high and the temperature difference from the EGR passage is large (for example, in the cold region) Even in the winter season), condensation of moisture in the EGR passage can be suitably suppressed.
- the EGR passage has an EGR cooler for cooling the exhaust gas, and the bypass passage is connected to the EGR passage on the intake side of the EGR cooler.
- the heat from the exhaust temperature raising device via the bypass passage can be applied to a portion of the EGR passage closer to the intake side than the EGR cooler without passing through the EGR cooler. This makes it possible to quickly raise the temperature of the portion.
- the EGR passage includes an EGR valve that opens and closes the EGR passage closer to the intake side than the connection point of the bypass passage, and the controller controls the EGR valve to close.
- the exhaust gas that has passed through the bypass passage is supplied to the exhaust side of the EGR passage.
- the EGR cooler can be suitably heated using an EGR valve when necessary. Further, it is considered that the temperature on the intake side of the EGR cooler is delayed in normal use of the EGR passage. In this aspect, the temperature on the intake side can be suitably increased.
- the controller controls the EGR valve to raise the temperature of the intake side of the EGR passage after the temperature of the EGR cooler is raised.
- the EGR valve when necessary, is used to preferentially raise the temperature of the EGR cooler that is highly likely to condense moisture, and then the temperature on the intake side of the EGR passage is raised. Can be suitably suppressed.
- the EGR passage has an EGR cooler that cools the exhaust gas, and the bypass passage is connected to the EGR passage at a point on the exhaust side of the EGR cooler.
- heat from the exhaust temperature raising device acts on the EGR cooler via the bypass passage when necessary, so that condensation of moisture in the EGR passage including the EGR cooler can be suitably suppressed.
- the means for solving the problems in the present invention can be used in combination as much as possible.
- FIG. 1 is a conceptual diagram of a first embodiment of the present invention.
- FIG. 2 is a flowchart showing the low-pressure EGR passage heating process in the first embodiment.
- FIG. 3 is a conceptual diagram of the second embodiment of the present invention.
- FIG. 4 is a flowchart showing a low pressure EGR passage heating process in the second embodiment.
- FIG. 5 is a conceptual diagram showing the main part of a modification of the first embodiment.
- FIG. 6 is a conceptual diagram showing the main part of a second modification of the first embodiment.
- FIG. 1 shows a first embodiment of the present invention.
- the engine body 1 is a compression ignition internal combustion engine (diesel engine) using light oil as fuel, but may be another type of internal combustion engine.
- the engine body 1 has a combustion chamber 2 in each of the four cylinders. Each combustion chamber 2 is provided with an electronically controlled fuel injection valve 3 for injecting fuel.
- An intake manifold 4 and an exhaust manifold 5 are connected to the combustion chamber 2.
- the intake manifold 4 is connected to the outlet of the compressor 7 a of the exhaust turbocharger 7 via the intake pipe 6.
- An inlet of the compressor 7 a is connected to an air cleaner 9 via an air flow meter 8.
- a throttle valve 10 driven by a step motor is disposed in the intake pipe 6.
- An intercooler 11 for cooling the intake air flowing through the intake pipe 6 is disposed around the intake pipe 6.
- Engine cooling water is guided into the intercooler 11 and the intake air is cooled by the engine cooling water.
- the exhaust manifold 5 is connected to the inlet of the exhaust turbine 7 b of the exhaust turbocharger 7.
- the outlet of the exhaust turbine 7 b is connected to the exhaust purification catalyst 13 via the exhaust pipe 12.
- a small oxidation catalyst 14 is arranged in the engine exhaust passage upstream of the exhaust purification catalyst 13, that is, in the exhaust pipe 12.
- the small oxidation catalyst 14 has a smaller volume than the exhaust purification catalyst 13 and a part of the exhaust gas flowing into the exhaust purification catalyst 13 circulates.
- the exhaust purification catalyst 13 is composed of, for example, an oxidation catalyst, a three-way catalyst, or a NOx catalyst.
- the small oxidation catalyst 14 is composed of an oxidation catalyst, and as the catalyst material, for example, Pt / CeO 2 , Mn / CeO 2 , Fe / CeO 2 , Ni / CeO 2 , Cu / CeO 2 or the like can be used. Cordierite or metal is used for the base material of the catalysts 13 and 14.
- a fuel supply valve 15 for supplying fuel to the small oxidation catalyst 14 is arranged with its injection port facing the exhaust pipe 12.
- the fuel in the fuel tank 44 is supplied to the fuel supply valve 15 via the fuel pump 43.
- a pipe line, a control valve, and a compressor for supplying combustion air from the outside into the exhaust pipe 12 may be provided.
- a glow plug 16 is provided in the exhaust pipe 12 on the downstream side of the fuel supply valve 15.
- the glow plug 16 is arranged so that the fuel added from the fuel supply valve 15 contacts the tip of the glow plug 16.
- the glow plug 16 is connected to a DC power source and a booster circuit (both not shown) for supplying power to the glow plug 16.
- a ceramic heater may be used instead of the glow plug.
- a collision plate for colliding the fuel injected from the fuel supply valve 15 may be disposed in the exhaust pipe 12.
- the small oxidation catalyst 14, the fuel supply valve 15, and the glow plug 16 constitute an exhaust temperature raising device 40, which is controlled by an ECU 50 described later.
- the exhaust manifold 5 and the intake manifold 4 are connected to each other via a high-pressure EGR passage 18.
- An electronically controlled EGR control valve 19 is disposed in the high pressure EGR passage 18.
- a high pressure EGR cooler 20 for cooling the EGR gas flowing in the high pressure EGR passage 18 is disposed.
- the engine cooling water is guided into the high-pressure EGR cooler 20, and the EGR gas is cooled by the engine cooling water.
- the exhaust pipe 12 and the intake pipe 6 are connected via a low pressure EGR passage 30.
- the low pressure EGR passage 30 connects the exhaust pipe 12 on the downstream side of the exhaust turbocharger 7 and the exhaust purification catalyst 13 and the intake pipe 6 on the upstream side of the exhaust turbocharger 7.
- a bypass passage 31 is provided so as to connect the exhaust pipe 12 and the low pressure EGR passage 30.
- the bypass passage 31 connects the low-pressure EGR passage 30 to a point in the exhaust pipe 12 downstream of the exhaust temperature raising device 40 and upstream of the exhaust purification catalyst 13. Therefore, the heat of the exhaust gas temperature raising device 40 can raise the temperature of the exhaust gas supplied into the bypass passage 31.
- the bypass passage 31 is provided with a bypass valve 34 that opens and closes the bypass passage 31.
- a low pressure EGR cooler 32 for cooling the exhaust gas is disposed around the low pressure EGR passage 30, a low pressure EGR cooler 32 for cooling the exhaust gas is disposed.
- the bypass passage 31 is connected to the low pressure EGR passage 30 on the intake side of the low pressure EGR cooler 32.
- the low-pressure EGR passage 30 is provided with a low-pressure EGR valve 33 for opening and closing the low-pressure EGR passage 30 in the normal low-pressure EGR control, closer to the intake side than the connection point with the bypass passage 31.
- a catalyst inlet valve 35 for opening and closing the exhaust pipe 12 is provided on the upstream side of the exhaust purification catalyst 13 and downstream of the connection point of the bypass passage 31.
- An exhaust throttle valve 36 for opening and closing the exhaust pipe 12 is provided downstream of the exhaust purification catalyst 13 and downstream of the connection point with the low pressure EGR passage 30.
- the low-pressure EGR passage 30 is further provided with an FOD (Foreign Object Damage) trapper 37 made of a metal mesh for capturing foreign matter.
- a low pressure EGR temperature sensor 38 for detecting the temperature in the low pressure EGR passage 30 is installed in the low pressure EGR passage 30 on the intake side of the connection point with the bypass passage 31.
- the low pressure EGR cooler 32 is provided with a cooler temperature sensor 39 for detecting the internal temperature.
- the temperature sensors 38 and 39 have a thermistor whose resistance value changes depending on the temperature, and can detect a change in the exhaust temperature based on a change in the resistance value of the thermistor.
- Each fuel injection valve 3 is connected to a common rail 42 via a fuel supply pipe 41, and this common rail 42 is connected to a fuel tank 44 via an electronically controlled fuel pump 43 with variable discharge amount.
- the fuel stored in the fuel tank 44 is supplied into the common rail 42 by the fuel pump 43, and the fuel supplied into the common rail 42 is supplied to the fuel injection valve 3 through each fuel supply pipe 41.
- An electronic control unit (ECU) 50 which is a controller, is composed of a well-known digital computer, and is connected to each other by a bidirectional bus, a ROM (read only memory), a RAM (random access memory), a CPU (microprocessor), an input port. And an output port.
- ECU electronice control unit
- the output signals of the temperature sensors 38 and 39 are input to the input port of the ECU 50 via corresponding AD converters.
- a load sensor 52 that generates an output voltage proportional to the amount of depression of the accelerator pedal 51 is connected to the accelerator pedal 51, and the output voltage of the load sensor 52 is input to the input port via a corresponding AD converter.
- a crank angle sensor 53 that generates an output pulse every time the crankshaft of the engine body 1 rotates, for example, 15 ° is connected to the input port.
- an intake air temperature sensor 54 installed in the vicinity of the throttle valve 10 is connected to the input port.
- the output port of the ECU 50 is used for driving the throttle valve 10, the high pressure EGR control valve 19, the low pressure EGR control valve 33, the bypass valve 34, the catalyst inlet valve 35, and the exhaust throttle valve 36 via corresponding drive circuits. Connected to each step motor. The output port is also connected to the fuel injection valve 3 and the fuel pump 43 via corresponding drive circuits. The operation of these actuators is controlled by the ECU 50.
- Various programs and reference values / initial values are stored in the ROM of the ECU 50. Such reference values and initial values include temperature reference values Tmin1 and Tmin2 used for processing to be described later.
- the ECU 50 calculates the fuel supply instruction amount based on parameters indicating the vehicle state including the air flow meter 8, the load sensor 52, and the crank angle sensor 53, particularly the engine operation state, and the fuel injection valve for a time corresponding to the instruction amount.
- a control signal is output to open 3 and 15. In accordance with this control signal, an amount of fuel corresponding to the fuel supply instruction amount is supplied from the fuel injection valves 3 and 15.
- the ECU 50 selectively switches the EGR passage for supplying EGR gas according to the engine operating state determined by, for example, the engine load factor KL and the engine speed Ne.
- the engine load factor KL is the ratio of the engine load to the total load. That is, when the engine load factor KL is lower than a predetermined first set load factor KL1, EGR gas is supplied only through the high-pressure EGR passage 18. In this way, good responsiveness can be ensured, and the amount of EGR gas supplied to the engine can be precisely controlled.
- the engine load factor KL is higher than the first set load factor KL1 and lower than the predetermined second set load factor KL2
- EGR gas is supplied only through the low pressure EGR passage 30. . This makes it possible to reliably supply EGR gas to the engine even when the engine load factor KL is high. Further, when the engine load factor KL is higher than the second set load factor KL2, the supply of EGR gas is prohibited.
- the ECU 50 controls the exhaust temperature raising device 40 to supply and ignite fuel, thereby raising the temperature of the small oxidation catalyst 14. Part or all of the supplied fuel is ignited by the glow plug 16, thereby raising the temperature of the exhaust gas.
- the ECU 50 supplies fuel to the exhaust purification catalyst 13 by injecting more fuel than necessary for the small-sized oxidation catalyst 14 as necessary, whereby the accumulated particulate matter (PM) is accumulated.
- the oxidation and combustion and the exhaust purification catalyst 13 are NOx occlusion reduction catalysts, it is also possible to perform NOx reduction processing and SOx poisoning recovery processing on the exhaust purification catalyst 13.
- the ECU 50 further executes the following low-pressure EGR passage heating process in parallel with the above-described controls. This low pressure EGR passage heating process will be described below with reference to FIG.
- the processing routine of FIG. 2 is repeatedly executed every predetermined time on condition that an ignition switch (not shown) is turned on and the engine body 1 is operating.
- the ECU 50 first reads the values of the EGR intake side temperature T1 detected by the low pressure EGR temperature sensor 38 and the low pressure EGR cooler temperature T2 detected by the cooler temperature sensor 39 (S10).
- the ECU 50 determines whether or not the read EGR intake side temperature T1 is lower than the reference value Tmin1 (S20). If affirmative, that is, if the EGR intake side temperature T1 is lower than the reference value Tmin1, the ECU 50 controls the step motors that drive these valves to open the bypass valve 34 and close the catalyst inlet valve 35. Output is performed (S30).
- the ECU 50 determines whether or not the previously read low-pressure EGR cooler temperature T2 is lower than the reference value Tmin2 (S40).
- the reference value Tmin2 is a value lower than the reference value Tmin1, but may be a value higher than the reference value Tmin1 or a value equal to the reference value Tmin1.
- affirmative determination is made in steps S20 and S40.
- step S40 If the determination in step S40 is affirmative, that is, if the low-pressure EGR cooler temperature T2 is lower than the reference value Tmin2, the ECU 50 closes the low-pressure EGR valve 33 and opens the exhaust throttle valve 36. A control output is performed on (S50). As a result, as shown by the arrow F2 in FIG. 1, the exhaust gas heated by the exhaust temperature raising device 40 skips the exhaust purification catalyst 13, and bypasses the bypass passage 31, the low pressure EGR cooler 32, and the exhaust throttle valve 36. Flowing through.
- step S40 that is, if the low pressure EGR cooler temperature T2 is higher than or equal to the reference value Tmin2, the ECU 50 opens these low pressure EGR valves 33 and closes the exhaust throttle valves 36. Control output is performed for each step motor to be driven (S70). As a result, the exhaust gas heated by the exhaust gas temperature raising device 40 flows through the bypass passage 31 and the low pressure EGR valve 33 without passing through the low pressure EGR cooler 32 as indicated by an arrow F3 in FIG.
- step S20 that is, if the temperature T1 is equal to or greater than the reference value Tmin1, the ECU 50 closes the bypass valve 34, opens the catalyst inlet valve 35, and opens the exhaust throttle valve 36.
- a control output is performed for each step motor that drives the valve (S60).
- the bypass passage 31 connects the point on the downstream side of the exhaust temperature raising device 40 and the upstream side of the exhaust purification catalyst 13 to the low pressure EGR passage 30.
- the exhaust gas heated by the temperature device 40 can be supplied to the intake passage through the low pressure EGR passage 30, and a sufficient amount of heat can be obtained by the exhaust temperature raising device 40.
- Tmin1 a predetermined reference value
- the ECU 50 controls the bypass valve 34 to open (S30), so that the engine water temperature is high and the low pressure EGR passage 30 Even when the temperature difference is large (for example, in the severe winter season in a cold region), condensation of moisture in the low-pressure EGR passage 30 can be suitably suppressed.
- the low pressure EGR passage 30 has the low pressure EGR cooler 32, and the bypass passage 31 is connected to the low pressure EGR passage 30 on the intake side of the low pressure EGR cooler 32.
- the heat from the exhaust temperature raising device 40 via the bypass passage 31 acts on the portion of the low pressure EGR passage 30 on the intake side of the low pressure EGR cooler 32 without passing through the low pressure EGR cooler 32 ( S ⁇ b> 70), the temperature on the intake side can be quickly raised without loss due to the low pressure EGR cooler 32.
- the low pressure EGR passage 30 includes an EGR valve 33 that opens and closes the low pressure EGR passage 30 on the intake side of the connection point of the bypass passage 31, and the ECU 50 controls the EGR valve 33 to close.
- S50 the exhaust gas that has passed through the bypass passage 31 is supplied to the exhaust side of the low-pressure EGR passage 30.
- the temperature of the low pressure EGR cooler 32 can be suitably raised using the EGR valve 33.
- the temperature on the intake side in the low-pressure EGR cooler 32 is delayed from the region on the exhaust side. In this aspect, the region on the intake side is preferable. The temperature can be increased.
- the EGR 50 controls the EGR valve 33 and the low-pressure EGR cooler 32 is heated, so that the EGR 50 is higher than the intake side of the low-pressure EGR passage 30 (ie, the connection point with the bypass passage 31).
- the temperature of the region near the intake pipe 6 is increased.
- the EGR valve 33 is used to preferentially raise the temperature of the low-pressure EGR cooler 32 that is highly likely to condense moisture, and thereafter the temperature of the intake side of the low-pressure EGR passage 30 is raised, so that condensed water is generated. Can be suitably suppressed.
- the bypass passage 31 is connected to the low pressure EGR passage 30 at a point on the exhaust side of the low pressure EGR cooler 62.
- the configuration of the low pressure EGR cooler 62 is the same as that of the low pressure EGR cooler 32 in the first embodiment described above.
- the temperature in the low pressure EGR passage 30 is detected only by the cooler temperature sensor 39, and the low pressure EGR temperature sensor 38 is not installed.
- the reference value stored in the ROM of the ECU 50 includes a temperature reference value Tmin3 used for processing to be described later. Since the remaining mechanical configuration of the second embodiment is the same as that of the first embodiment, the same reference numerals are given and detailed description thereof is omitted.
- the low pressure EGR passage heating process executed by the ECU 50 in the second embodiment will be described with reference to FIG.
- the processing routine of FIG. 4 is repeatedly executed every predetermined time on condition that an ignition switch (not shown) is turned on and the engine body 1 is operating.
- the ECU 50 reads the value of the low pressure EGR cooler temperature T3 detected by the cooler temperature sensor 39 (S110). Next, the ECU 50 determines whether or not the read low pressure EGR cooler temperature T3 is lower than the reference value Tmin3 (S120). In a severe winter season in a cold region, for example, during cold start when the outside air temperature and the temperature T3 are ⁇ 10 ° C. or lower, affirmative determination is made in step S120.
- step S120 If the determination in step S120 is affirmative, that is, if the low pressure EGR cooler temperature T3 is lower than the reference value Tmin3, the ECU 50 opens the bypass valve 34, closes the catalyst inlet valve 35, closes the exhaust throttle valve 36, and closes the low pressure EGR valve 33. Is output to each step motor that drives these valves (S130). As a result, the exhaust gas heated by the exhaust gas temperature raising device 40 flows through the bypass passage 31 and the low pressure EGR cooler 62 as indicated by an arrow F3 in FIG.
- step S130 When the process of step S130 is repeated, the temperature of each part of the low-pressure EGR passage 30 is increased, and the temperature T3 rises and the result is negative in step S120. If NO in step S120, that is, if the low pressure EGR cooler temperature T3 is higher than or equal to the reference value Tmin3, the ECU 50 closes the bypass valve 34, opens the catalyst inlet valve 35, and opens the exhaust throttle valve 36. As described above, control output is performed for each step motor that drives these valves (S140).
- the ECU 50 determines whether a predetermined low-pressure EGR valve open condition is satisfied (S150).
- the low-pressure EGR valve open condition is, for example, as described above, that the engine load factor KL is higher than the first set load factor KL1 and lower than the predetermined second set load factor KL2. If the determination is affirmative, that is, the low-pressure EGR valve open condition is satisfied, the low-pressure EGR valve 33 is opened (S160). As a result, the exhaust gas heated by the exhaust gas temperature raising device 40 flows through the low pressure EGR passage 30 including the low pressure EGR cooler 62 without passing through the bypass passage 31.
- step S50 that is, if the low pressure EGR valve open condition is not satisfied, the low pressure EGR valve 33 is closed (S170). As a result, the exhaust gas heated by the exhaust gas temperature raising device 40 flows through the exhaust purification catalyst 13 without passing through the bypass passage 31 and the low pressure EGR passage 30.
- the bypass passage 31 is connected to the low pressure EGR passage 30 at a point on the exhaust side of the low pressure EGR cooler 62.
- the heat from the exhaust temperature raising device 40 acts on the low pressure EGR cooler 62 via the bypass passage 31, so that the low pressure EGR cooler 62 is included. Further, the condensation of moisture in the low pressure EGR passage 30 can be suitably suppressed.
- FIG. 5 shows a modification of the first embodiment.
- a single switching valve (direction control valve) 64 is used as shown in FIG.
- the downstream side of the exhaust temperature raising device 40 is connected to the exhaust purification catalyst 13 and the switching valve 64 rotates clockwise in the figure (arrow a direction)
- the downstream side of the exhaust temperature raising device 40 becomes the bypass passage 31.
- the opening of the bypass valve 34 and the closing of the catalyst inlet valve 35 and the closing of the bypass valve 34 and the opening of the catalyst inlet valve 35 in the first embodiment are realized by the single switching valve 64.
- the structure and control can be simplified.
- the switching valve 64 can also be applied to the second embodiment.
- FIG. 6 shows a second modification of the first embodiment.
- the angle ⁇ at which the bypass passage 31 intersects the low pressure EGR passage 30 is an acute angle.
- a flow (indicated by an arrow F4 in FIG. 6) from the bypass passage 31 toward the intake side of the low pressure EGR passage 30 is preferably formed, and thereby a flow (indicated by an arrow F5) toward the low pressure EGR cooler 32. Therefore, the exhaust throttle valve 36 (see FIG. 1) on the downstream side of the exhaust purification catalyst 13 can be omitted, and the structure and control can be simplified.
- the temperature reference values Tmin1, Tmin2, and Tmin3 are all fixed values set in advance. However, one or more of these values are dynamically set based on the state of the vehicle (for example, the engine water temperature). May be. Although each valve is in two states of open or closed, the opening degree may be changed between these two states in a multistage manner or continuously.
- the temperature of the low pressure EGR passage 30 is directly detected by the temperature sensors 38 and 39.
- the temperature of the low pressure EGR passage is, for example, a detection value of an intake air temperature sensor 54 provided in the vicinity of the throttle valve 10. You may estimate based.
- the present invention can also be applied to an engine that does not have a turbocharger.
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Abstract
Description
内燃機関の排気通路に設けられて排ガスを昇温する排気昇温装置と、
前記排気昇温装置よりも下流側の前記排気通路に設けられた排気浄化触媒と、
前記排気浄化触媒の下流側の前記排気通路と前記内燃機関の吸気通路とを接続するEGR通路と、
前記排気通路における前記排気昇温装置よりも下流側であって前記排気浄化触媒よりも上流側の点と前記EGR通路とを接続するバイパス通路と、
前記バイパス通路を開閉するバイパス弁と、
当該バイパス弁を制御するコントローラと、を備えた内燃機関の排気装置であって、
前記コントローラは、前記EGR通路の温度が予め定められた基準値よりも低い場合に、前記バイパス弁を開くように制御して、前記排気昇温装置により昇温された排ガスを前記EGR通路を通じて前記吸気通路に供給させる内燃機関の排気装置である。
本発明の好適な実施形態について、以下に詳細に説明する。図1は本発明の第1実施形態を示す。図1において、エンジン本体1は、軽油を燃料とする圧縮点火式内燃機関(ディーゼルエンジン)であるが、他の形式の内燃機関であってもよい。エンジン本体1は、4つの気筒のそれぞれに燃焼室2を有する。各燃焼室2には、燃料を噴射するための電子制御式の燃料噴射弁3が配置されている。燃焼室2には、吸気マニホールド4および排気マニホールド5が接続されている。吸気マニホールド4は、吸気管6を介して排気ターボチャージャ7のコンプレッサ7aの出口に連結されている。コンプレッサ7aの入口は、エアフローメータ8を介してエアクリーナ9に連結されている。
次に、本発明の第2実施形態について説明する。図3に示される第2実施形態では、バイパス通路31が、低圧EGRクーラ62よりも排気側の点において、低圧EGR通路30に接続している。低圧EGRクーラ62の構成は、上述した第1実施形態における低圧EGRクーラ32と同様である。低圧EGR通路30内の温度の検出はクーラ温度センサ39のみによって行われ、低圧EGR温度センサ38は設置されていない。ECU50のROMに格納されている基準値は、後述する処理に使用される温度の基準値Tmin3を含む。第2実施形態の残余の機械的構成は、上記第1実施形態と同様であるため、同一符号を付してその詳細の説明は省略する。
図5は上記第1実施形態の変形例を示す。この変形例は、上記第1実施形態におけるバイパス弁34及び触媒入口弁35に代えて、図5に示されるように、単一の切換弁(方向制御弁)64を用いている。図示の状態では、排気昇温装置40の下流側が排気浄化触媒13に接続され、切替弁64が図中時計回り(矢印a方向)に回転すると、排気昇温装置40の下流側がバイパス通路31に接続される。切替弁64のシール性を促進するために、弁体の周囲にガスケット65を配置するのが好適である。この変形例によれば、上記第1実施形態におけるバイパス弁34のオープン及び触媒入口弁35のクローズ、並びにバイパス弁34のクローズ及び触媒入口弁35のオープンが、単一の切替弁64により実現され、構造及び制御を単純化することができる。なお、この切替弁64は上記第2実施形態に適用することも可能である。
図6は上記第1実施形態の第2の変形例を示す。この変形例は、図6に示されるように、バイパス通路31が低圧EGR通路30と交わる角度αを、鋭角としたものである。この構成によれば、バイパス通路31から低圧EGR通路30の吸気側に向かう流れ(図6において矢印F4で示される)が好適に形成され、これによって、低圧EGRクーラ32に向かう流れ(矢印F5で示される)が抑制されるため、排気浄化触媒13の下流側の排気絞り弁36(図1参照)を省略することができ、構造及び制御を単純化することができる。
5 排気マニホールド
6 吸気管
7 ターボチャージャ
12 排気管
13 排気浄化触媒
14 小型酸化触媒
18 高圧EGR通路
30 低圧EGR通路
31 バイパス通路
32 低圧EGRクーラ
40 排気昇温装置
50 ECU
Claims (5)
- 内燃機関の排気通路に設けられて排ガスを昇温する排気昇温装置と、
前記排気昇温装置よりも下流側の前記排気通路に設けられた排気浄化触媒と、
前記排気浄化触媒の下流側の前記排気通路と前記内燃機関の吸気通路とを接続するEGR通路と、
前記排気通路における前記排気昇温装置よりも下流側であって前記排気浄化触媒よりも上流側の点と前記EGR通路とを接続するバイパス通路と、
前記バイパス通路を開閉するバイパス弁と、
当該バイパス弁を制御するコントローラと、を備えた内燃機関の排気装置であって、
前記コントローラは、前記EGR通路の温度が予め定められた基準値よりも低い場合に、前記バイパス弁を開くように制御して、前記排気昇温装置により昇温された排ガスを前記EGR通路を通じて前記吸気通路に供給させる内燃機関の排気装置。 - 請求項1に記載の内燃機関の排気装置であって、
前記EGR通路は、排ガスを冷却するEGRクーラを有し、前記バイパス通路は、前記EGRクーラよりも吸気側において前記EGR通路に接続している内燃機関の排気装置。 - 請求項2に記載の内燃機関の排気装置であって、
前記EGR通路は、前記バイパス通路の接続点よりも吸気側に、当該EGR通路を開閉するEGR弁を備え、
前記コントローラは、前記EGR弁を閉じるように制御して、前記バイパス通路を経由した排ガスを、前記EGR通路の排気側に供給させる内燃機関の排気装置。 - 請求項3に記載の内燃機関の排気装置であって、
前記コントローラは、前記EGR弁を制御して、前記EGRクーラが昇温された後に、EGR通路の吸気側を昇温させる内燃機関の排気装置。 - 請求項1に記載の内燃機関の排気装置であって、
前記EGR通路は、排ガスを冷却するEGRクーラを有し、前記バイパス通路は、前記EGRクーラよりも排気側において前記EGR通路に接続している内燃機関の排気装置。
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PCT/JP2010/000978 WO2011101891A1 (ja) | 2010-02-17 | 2010-02-17 | 内燃機関の排気装置 |
EP10787254A EP2538064A1 (en) | 2010-02-17 | 2010-02-17 | Exhaust device of internal combustion engine |
CN201080001826XA CN102239324A (zh) | 2010-02-17 | 2010-02-17 | 内燃机的排气装置 |
US12/999,825 US20110225955A1 (en) | 2010-02-17 | 2010-02-17 | Exhaust apparatus for internal combustion engine |
JP2010543249A JP4953107B2 (ja) | 2010-02-17 | 2010-02-17 | 内燃機関の排気装置 |
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EP (1) | EP2538064A1 (ja) |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0847280A (ja) * | 1994-08-04 | 1996-02-16 | Fanuc Ltd | Acサーボモータの制御方法 |
JP2013144934A (ja) * | 2012-01-13 | 2013-07-25 | Toyota Motor Corp | 冷却システムの制御装置 |
JP5299572B2 (ja) * | 2010-07-07 | 2013-09-25 | トヨタ自動車株式会社 | 内燃機関 |
JP2014208986A (ja) * | 2013-04-16 | 2014-11-06 | 本田技研工業株式会社 | 内燃機関の排気還流制御装置 |
JP2014218954A (ja) * | 2013-05-09 | 2014-11-20 | 日野自動車株式会社 | Egrシステム |
JP2014218955A (ja) * | 2013-05-09 | 2014-11-20 | 日野自動車株式会社 | Egrシステム |
JP2015516543A (ja) * | 2012-05-15 | 2015-06-11 | ヴァレオ システム ドゥ コントロール モトゥール | 排ガス回路からのエネルギーの回収装置 |
JP2015519509A (ja) * | 2012-05-09 | 2015-07-09 | ヴァレオ システム ドゥ コントロール モトゥール | 排気ガス回路におけるエネルギー回収システム |
JP2016217287A (ja) * | 2015-05-22 | 2016-12-22 | カルソニックカンセイ株式会社 | エンジンの排気循環装置 |
US20180058285A1 (en) * | 2011-10-03 | 2018-03-01 | Volvo Technology Corporation | Internal combustion engine system and method for increasing the temperature in at least one part of the internal combustion engine system |
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US11698014B1 (en) | 2022-07-20 | 2023-07-11 | Garrett Transportation I Inc. | Flow estimation for secondary air system |
US11885250B1 (en) | 2023-05-10 | 2024-01-30 | GM Global Technology Operations LLC | Vehicle systems and methods for aftertreatment preheating |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005248777A (ja) * | 2004-03-03 | 2005-09-15 | Toyota Motor Corp | Egrシステム |
JP2010065601A (ja) * | 2008-09-10 | 2010-03-25 | Fuji Heavy Ind Ltd | ディーゼルエンジンの排気ガス再循環装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4089396B2 (ja) * | 2002-11-15 | 2008-05-28 | いすゞ自動車株式会社 | ターボチャージャーを備えた内燃機関のegrシステム |
US7681394B2 (en) * | 2005-03-25 | 2010-03-23 | The United States Of America, As Represented By The Administrator Of The U.S. Environmental Protection Agency | Control methods for low emission internal combustion system |
EP1963646B1 (en) * | 2005-12-20 | 2010-12-15 | BorgWarner, Inc. | Controlling exhaust gas recirculation in a turbocharged compression-ignition engine system |
US7418335B2 (en) * | 2006-05-31 | 2008-08-26 | Caterpillar Inc. | Method and system for estimating injector fuel temperature |
JP4285528B2 (ja) * | 2006-11-06 | 2009-06-24 | トヨタ自動車株式会社 | 内燃機関の排気再循環システム |
JP4878305B2 (ja) * | 2007-02-08 | 2012-02-15 | ヤンマー株式会社 | エンジン用egr装置 |
-
2010
- 2010-02-17 JP JP2010543249A patent/JP4953107B2/ja not_active Expired - Fee Related
- 2010-02-17 EP EP10787254A patent/EP2538064A1/en not_active Withdrawn
- 2010-02-17 WO PCT/JP2010/000978 patent/WO2011101891A1/ja active Application Filing
- 2010-02-17 US US12/999,825 patent/US20110225955A1/en not_active Abandoned
- 2010-02-17 CN CN201080001826XA patent/CN102239324A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005248777A (ja) * | 2004-03-03 | 2005-09-15 | Toyota Motor Corp | Egrシステム |
JP2010065601A (ja) * | 2008-09-10 | 2010-03-25 | Fuji Heavy Ind Ltd | ディーゼルエンジンの排気ガス再循環装置 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0847280A (ja) * | 1994-08-04 | 1996-02-16 | Fanuc Ltd | Acサーボモータの制御方法 |
JP5299572B2 (ja) * | 2010-07-07 | 2013-09-25 | トヨタ自動車株式会社 | 内燃機関 |
US20180058285A1 (en) * | 2011-10-03 | 2018-03-01 | Volvo Technology Corporation | Internal combustion engine system and method for increasing the temperature in at least one part of the internal combustion engine system |
JP2013144934A (ja) * | 2012-01-13 | 2013-07-25 | Toyota Motor Corp | 冷却システムの制御装置 |
JP2015519509A (ja) * | 2012-05-09 | 2015-07-09 | ヴァレオ システム ドゥ コントロール モトゥール | 排気ガス回路におけるエネルギー回収システム |
JP2015516543A (ja) * | 2012-05-15 | 2015-06-11 | ヴァレオ システム ドゥ コントロール モトゥール | 排ガス回路からのエネルギーの回収装置 |
JP2014208986A (ja) * | 2013-04-16 | 2014-11-06 | 本田技研工業株式会社 | 内燃機関の排気還流制御装置 |
JP2014218954A (ja) * | 2013-05-09 | 2014-11-20 | 日野自動車株式会社 | Egrシステム |
JP2014218955A (ja) * | 2013-05-09 | 2014-11-20 | 日野自動車株式会社 | Egrシステム |
JP2016217287A (ja) * | 2015-05-22 | 2016-12-22 | カルソニックカンセイ株式会社 | エンジンの排気循環装置 |
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JP4953107B2 (ja) | 2012-06-13 |
US20110225955A1 (en) | 2011-09-22 |
JPWO2011101891A1 (ja) | 2013-06-17 |
CN102239324A (zh) | 2011-11-09 |
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