EP1601863B1 - Exhaust system - Google Patents
Exhaust system Download PDFInfo
- Publication number
- EP1601863B1 EP1601863B1 EP04715949A EP04715949A EP1601863B1 EP 1601863 B1 EP1601863 B1 EP 1601863B1 EP 04715949 A EP04715949 A EP 04715949A EP 04715949 A EP04715949 A EP 04715949A EP 1601863 B1 EP1601863 B1 EP 1601863B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust
- engine
- pipe
- exhaust system
- routes
- 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 - Lifetime
Links
- 239000007789 gas Substances 0.000 claims abstract description 133
- 238000013022 venting Methods 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims description 53
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 30
- 239000000446 fuel Substances 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 11
- 230000001172 regenerating effect Effects 0.000 claims description 10
- 230000009977 dual effect Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 4
- 241000549194 Euonymus europaeus Species 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012041 precatalyst Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0093—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are of the same type
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- 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
-
- 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
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
Definitions
- the invention relates to an exhaust system for use with an engine system and, in particular, relates to an exhaust system for a dual fuel engine system.
- EU regulations require engine emissions to meet particular standards in terms of the types and quantities of gases emitted. Engine emissions depend on may factors including the type and amount of fuel injected into the engine for combustion, and post combustion gas treatment.
- European patent application No. EP 0 808 999 discloses an exhaust control valve that is connected to an exhaust manifold of an internal combustion engine of an automobile. In the exhaust control valve, either of two valve discs is opened, and an exhaust gas flows in one of the exhaust pipes. A first catalytic converter is provided on one of the exhaust pipes, and a second catalytic converter is provided to a collecting pipe to which the two exhaust pipes emerge. A temperature sensor detects temperature of the second catalytic converter to operator control circuit.
- an actuator is operated by the control circuit via a solenoid valve and a negative pressure tank to open one of the valve discs to flow the exhaust gas into the exhaust pipe having the first catalytic converter to purify hazardous substance in the low temperature exhaust gas.
- an exhaust system for an engine system comprising a pipe system having at least one input port for receiving exhaust gases from the engine system and at least one output port for venting exhaust gases from the exhaust system
- the pipe system includes at least two exhaust routes for flow of gases from the one or more input ports to the one or more output ports
- a diverter valve operable in response to a control input to control the flow of exhaust gases through the pipe system through one or more of the exhaust routes
- the diverter valve comprising at least two butterfly valve members, each butterfly valve member controlling the flow of exhaust gases via one of said exhaust routes, each member having an input face and an output face, characterised in that at least one input face comprises one or more blades for disrupting the flow of exhaust gases emitted from the engine system, and in that the diverter valve comprises walls associated with each butterfly member, the walls associated with at least one of the butterfly members being convex whereby, in use, a venturi effect is produced.
- input face and output face used to describe the butterfly valve members, refer to the orientation of the faces of the butterfly valve member when that member is in the closed position.
- input face which face has been described as the input face
- output face which face has been described as an output face.
- a diverter valve provides an effective arrangement for enabling the efficiency and effectiveness of a particular exhaust gas management system to be assessed. This is because the diverter valve enables the flow of exhaust gases from an engine to be directed along one of at least two exhaust routes. It is therefore possible to compare the efficiency and effectiveness of at least two exhaust arrangements using the same engine. This enables a more accurate and consistent comparison of the two arrangements to be made. For example, it is possible to compare an exhaust arrangement including a catalyst treatment system with an exhaust arrangement excluding a catalyst, or to directly compare the efficiency of different catalysts.
- the provision of the diverter valve in the pipe system also enables effective measurements to be made by diverting the exhaust gases to a sensor chamber without affecting the flow of exhaust gases through the exhaust system.
- the one or more blades create disruption in the flow of exhaust gases, and thus disrupt laminar exhaust gas flow. Further, the disruption of laminar flow allows the exhaust gases to expand which results in a more even distribution of exhaust gases.
- the one or more blades may cause either turbulence in the exhaust gases, or may induce a swirling motion in the exhaust gases.
- a turbulent flow is generally regarded as being fluid flow in which the particle motion of the fluid at any point varies rapidly in magnitude and direction. This results in irregular eddy motion.
- a swirling motion is one in which the particle motion is substantially helical, and will have either a clockwise or counter-clockwise sense.
- the diverter valve causes a more even distribution of exhaust gases over the exposed face of the catalyst.
- the convex walls form a venturi, and in combination with the one or more blades further improves the even distribution of exhaust gases across the face of a catalyst positioned in one of the exhaust routes, thereby improving the efficiency of the catalytic conversion.
- At least one output face comprises output disrupting means for creating turbulence in exhaust gases.
- an engine system including an engine, and an exhaust system comprising a pipe system having at least one input port for receiving exhaust gases from the engine system and at least one output port for venting exhaust gases from the exhaust system wherein the pipe system includes at least two exhaust routes for flow of gases from the one or more input ports to the one or more output ports, and further includes a diverter valve operable in response to a control input to control the flow of exhaust gases through the pipe system through one or more of the exhaust routes, the diverter valve comprising at least two butterfly valve members, each butterfly valve member controlling the flow of exhaust gases via one of said exhaust routes, each member having an input face and an output face, characterised in that at least one input face comprises one or more blades for disrupting the flow of exhaust gases emitted from the engine system, and in that the diverter valve comprises walls associated with each butterfly member, the walls associated with at least one of the butterfly members being convex whereby, in use, a venturi effect is produced.
- FIG. 1 An exhaust system 10 according to an embodiment of the invention is shown in Figure 1 .
- the exhaust system 10 includes a pipe system 12 connected to the exhaust of an engine 14.
- the pipe system 12 includes two input ports 15,16 for receiving exhaust gases from the engine 14.
- the pipe system also includes an output port 18 for venting exhaust gases from the exhaust system 10.
- One of the input ports 15 of the pipe system 12 is defined by one end of a catalyst treatment system 20.
- the catalyst treatment system 20 includes a pre-catalyst 22 and a main catalyst 24 connected in series.
- the catalyst treatment system 20 defines a first exhaust route A through the pipe system 12 for exhaust gases from the engine 14, and is connected at its other end to an input pipe 26 of a diverter valve 28.
- the other of the input ports 16 of the pipe system 12 is defined by one end of a bypass pipe 30.
- the bypass pipe 30 defines a second exhaust route B through the pipe system 12 for exhaust gases from the engine 14, and is connected at its other end to a second input pipe 32 of the diverter valve 28.
- the two input pipes 26,32 of the diverter valve 28 merge into a single output pipe 34.
- Each of the input pipes 26,32 includes a butterfly valve member 36 defined by a circular disc 38 ( Figures 4a and 4b ) pivotally mounted within the respective pipe 26,32 such that it is movable between an open position O P and a closed position O C .
- Each of the circular discs 38 corresponds in diameter to the internal diameter of the respective pipe 26,32 such that when the butterfly valve member 36 is moved to its closed position O c , it blocks the flow of gas through the pipe.
- the butterfly valve members 36 are pivotally mounted on a common spindle 40 at an angle of 90° to each other. This ensures that when one of the valve members 36 is in its open position O P , the other of the valve members 36 is in its closed position O c , thereby ensuring that one of the valve members 36 is always open. Failure of the engine system, through blockage of the flow of exhaust gases through the exhaust system 10, is thereby prevented.
- the spindle 40 is rotatably mounted in the body 42 of the diverter valve 28 defined by the input and output pipes 26,32,34, and is connected to a solenoid 44 mounted on the body 42 (see Figures 4c and 4d ) to control rotation of the spindle 40 in the body 42.
- the solenoid 44 is preferably controlled by a switch (not shown) such as, for example, an electronic switch.
- the switch may be operated directly, or it may include a receiver (not shown) to receive signals from a transmitter and permit control of the switch, and therefore the solenoid 44, from a remote location.
- the exhaust route A,B taken by exhaust gases from the engine 14, through the pipe system 12, is determined by the relative orientation of the butterfly valve members 36 in the diverter valve 28. For example, when the butterfly valve member 36 in the first input pipe 26 is in its open position O P , exhaust gases from the engine 14 pass through the catalyst treatment system 20. Similarly, when the butterfly valve member 36 in the second input pipe 32 is in its open position O P , exhaust gases from the engine 14 pass through the bypass pipe 30.
- the output pipe 34 of the diverter valve 28 is connected to an input pipe 45 of a continuously regenerating trap 46, which in turn is connected to an exhaust outlet pipe 48 defining the output port 18 of the pipe system 12.
- the continuously regenerating trap 46 separates non-compliant emission particulates from exhaust gases passing therethrough.
- An exhaust gas sensor 50a,50b is preferably provided in the bypass pipe 30 and in the catalyst treatment system 20, downstream of the main catalyst 24, to identify and measure the quantities of one or more gases in the exhaust gases.
- the type of sensor 50a,50b installed in the bypass pipe 30 and the catalyst treatment system 20 is determined by the fuel used in the engine 14 connected to the exhaust system 10.
- the sensor 50a,50b is preferably a methane sensor to determine the quantity of methane contained in the exhaust gases.
- a sensor 50a,50b in each of the exhaust routes A,B provides means for analyzing exhaust gases passing through each of the routes, and thereby permits comparative measurements to be made. It therefore enables the efficiency and effectiveness of the catalyst treatment system 20 to be compared with that of a simple bypass pipe 30 having no catalyst.
- diverter valve 28 will permit comparison of the two routes under different engine loading conditions simply by operating the solenoid 44 to vary the exhaust route A,B through the pipe system 12 which is taken by exhaust gases emitted by the engine 14.
- the exhaust gas outlet pipe 48 preferably includes an exhaust gas sensor 52.
- the particular type of sensor 52 installed in the exhaust gas outlet pipe 48 is determined by the fuel used in the engine 14 connected to the exhaust system 10.
- the sensor 52 is preferably a methane sensor to determine the quantity of methane contained in the exhaust gases.
- the sensors 50a,50b,52 provided in the exhaust system 10 may include transmitters which permit the sensors 50a,50b,52 to transmit measurements to a central control unit (not shown).
- the control unit may then use the measurements to control the diverter valve 28 and/or control the fuel injection in the engine 14.
- the diverter valve 28 may be reversed and positioned between the engine 14 and the exhaust routes A,B.
- the exhaust of engine 14 is connected to pipe 34 of the diverter valve 28
- the catalyst treatment system 20 is connected to pipe 26
- the bypass pipe 30 is connected to pipe 32.
- Both the catalyst treatment system 20 and the bypass pipe 30 are connected at their other ends to the input pipe 45 of the continuous regenerating trap 46. Again the relative positions of the butterfly valve members 36 in the diverter valve 28 determine which exhaust route A,B is taken by exhaust gases emitted by the engine 14.
- FIG. 2 An exhaust system 60 according to another embodiment of the invention is shown in Figure 2 .
- the same reference numerals are used to identify parts similar to those described with reference to Figure 1 .
- the exhaust system 60 includes a pipe system 12 connected to the exhaust of an engine 14.
- the pipe system 12 includes a single input port 115 for receiving exhaust gases from the engine 14.
- the pipe system 12 also includes an output port 18 for venting exhaust gases from the exhaust system 60.
- the input port 115 of the pipe system 12 is defined by an input pipe 34 of the diverter valve 28.
- the input pipe 34 of the diverter valve 28 splits to form two output pipes 26,32.
- One of the output pipes 26 is connected to one end of a catalyst treatment system 120 including a pre-catalyst 122 and a main catalyst 124 connected in series.
- the catalyst treatment system 120 defines a first exhaust route A through the pipe system 12 for exhaust gases from the engine 14, and is connected at its other end to an input pipe 45 of a continuous regenerating trap 46.
- the other output pipe 32 is connected to one end of another catalyst treatment system 220 including a pre-catalyst 222 and a main catalyst 224 connected in series.
- the second catalyst treatment system 220 defines a second exhaust route B through the pipe system 12 for exhaust gases from the engine 14, and is connected at its other end to the input pipe 45 of the continuous regenerating trap 46.
- the continuous regenerating trap 46 is connected to an exhaust outlet pipe 48 defining the output port 18 of the exhaust system 60.
- each of output pipes 26,32 of the diverter valve 28 includes a butterfly valve member 36 movable between an open position O P and a closed position O c ( Figures 4a and 4b ).
- the exhaust route A,B taken by exhaust gases from the engine 14, through the pipe system 12, is determined by the relative orientation of the butterfly valve members 36 in the diverter valve 28. For example, when the butterfly valve member 36 in the first output pipe 26 is in its open position O P , exhaust gases from the engine 14 pass through the first catalyst treatment system 120. Similarly, when the butterfly valve member 36 in the second output pipe 32 is in its open position O P , exhaust gases from the engine 14 pass through the second catalyst treatment system 220.
- An exhaust gas sensor 150 is preferably provided downstream of the main catalysts 124,224 to identify and measure the quantities of one or more gases in the exhaust gases.
- the sensor 150 may include a single sensor located in the input pipe 45 of the continuous regenerating trap 46. Alternatively, the sensor 150 may include a separate sensor in each of the first and second catalyst treatment systems 120,220.
- the type of sensor 150 is determined by the fuel used in the engine 14 connected to the exhaust system 60.
- the sensor 150 is preferably a methane sensor to determine the quantity of methane contained in the exhaust gases.
- a sensor 150 provides means for analyzing exhaust gases passing through each of the routes A,B, and thereby permits comparative measurements to be made. It therefore enables the efficiency and effectiveness of the first catalyst treatment system 120 to be compared with that of the second catalyst treatment system 220.
- diverter valve 28 will make it possible to increase the lifetime of the exhaust system 60 by enabling the provision of two catalyst treatment systems 120, 220 which can be switched between.
- the butterfly valve member controlling the flow of exhaust gases through the route in which that catalyst treatment system is located may be closed, thus diverting all exhaust gases through the other of the two exhaust routes to ensure that all gases are treated by the other catalyst treatment system.
- the exhaust gas outlet pipe 48 preferably includes an exhaust gas sensor 152.
- the particular type of sensor 152 installed in the exhaust gas outlet pipe 48 is determined by the fuel used in the engine 14 connected to the exhaust system 60.
- the sensor 152 is preferably a methane sensor to determine the quantity of methane contained in the exhaust gases.
- the sensors 150,152 provided in the exhaust system 10 may include transmitters which permit the sensors 150,152 to transmit measurements to a central control unit 62.
- the control unit 62 may then use the measurements to control the diverter valve 28 and/or control the fuel injection in the engine 14.
- the control unit 62 is preferably linked to a remote control computer 64 so that performance of the exhaust system 60 may be monitored from a remote location.
- information from engine sensors may be passed to a diesel control module 66 and information from gas sensors may be passed to a gas control module 68.
- the diesel and gas control modules 66,68 may communicate with each other and control the diesel and gas injectors on the basis of the combined information.
- the exhaust system may comprise a single control module for controlling both the diesel and the gas injector.
- Information from the diesel and gas control modules 66,68 may also be passed to a cab display module 70 within the vehicle together with information acquired from other components in the vehicle. This enables the vehicle operator to monitor the performance of the engine.
- This vehicle and/or engine information may also be passed to the control unit 62 to assist it in controlling the diverter valve 28. It may also, in turn, be passed to the remote control computer 64.
- FIG. 3 An exhaust system 80 according to a yet further embodiment of the invention is shown in Figure 3 . Again the same reference numerals are used to identify similar components.
- the exhaust system 80 includes a pipe system 12 connected to the exhaust of an engine 14.
- the pipe system 12 includes a single input port 115 for receiving exhaust gases from the engine 14.
- the pipe system 12 also includes an output port 18 for venting exhaust gases from the exhaust system 80.
- the input port 115 of the pipe system 12 is defined by one end of a catalyst treatment system 320 including a pre-catalyst 322 and a main catalyst 324 connected in series.
- the catalyst treatment system 320 is connected at its other end to an input pipe 34 of the diverter valve 28.
- the input pipe 34 of the diverter valve 28 splits to form two output pipes 26,32.
- One of the output pipes 26 is connected to an input pipe 82 of a chamber 84.
- Input pipe 82 and chamber 84 define a first exhaust route A through the pipe system 12 for exhaust gases from the engine 14.
- the chamber 84 includes an open valve (not shown) which allows the controlled release of exhaust gases directed to the chamber 84, and thereby defines an output port 18a of the exhaust system 80.
- the chamber 84 also includes a methane sensor 86.
- the other output pipe 32 is connected to an exhaust outlet pipe 88.
- the exhaust outlet pipe 88 defines a second exhaust route B through the pipe system 12 for exhaust gases from the engine 14, and defines an output port 18b of the exhaust system 80.
- each of output pipes 26,32 of the diverter valve 28 includes a butterfly valve member 36 movable between an open position O P and a closed position O c ( Figures 4a and 4b ).
- the exhaust route A,B taken by exhaust gases from the engine 14, through the pipe system 12, is determined by the relative orientation of the butterfly valve members 36 in the diverter valve 28. For example, when the butterfly valve member 36 in the first output pipe 26 is in its open position O P , exhaust gases from the engine 14 are passed via input pipe 82 into chamber 84. Similarly, when the butterfly valve member 36 in the second output pipe 32 is in its open position O P , exhaust gases from the engine 14 are passed to the exhaust outlet pipe 88.
- the arrangement of the chamber 84 forms a "dwell chamber" which allows the exhaust gases to be held in the vicinity of the methane sensor 86 when the butterfly valve member 36 in the first output pipe 26 is in its open position O P , before the exhaust gases are released from the chamber 84. This allows the sensor 86 to sample more effectively.
- the provision of the diverter valve 28 in the exhaust system 80 shown in Figure 3 enables the efficiency and effectiveness of the catalyst treatment system 320 to be tested by directing the exhaust gases into chamber 84, when required.
- the methane sensor 86 preferably includes a transmitter which allows the methane sensor 88 to transmit measurements to a central control unit 62.
- the control unit 62 may then pass this information on to a remote control computer 64.
- control unit 62 may receive information from the diesel and gas control units 66,68 which in turn it may pass on to the remote control computer 64.
- the control unit 62 preferably includes a transmitter to control the diverter valve 28, thereby permitting remote control and monitoring of the environment within the exhaust system.
- the diverter valve 28 may be controlled, either electrically or remotely, to control the flow of exhaust gases through the pipe system 12 in the event that one of the exhaust routes A,B becomes blocked or malfunctional.
- the diverter valve 28 may also include a failsafe arrangement which is operable to control the flow of exhaust gases through the pipe system 12 in the event of a power failure in the diverter valve 28.
- the butterfly valve members 36 may be movable to ensure that the exhaust gases pass along a predetermined one of the exhaust routes A,B by way of default.
- the butterfly valve members 36 may be movable to ensure that in the event that one of the exhaust routes A,B is blocked, for example, in a power failure situation, the exhaust gases pass along the other of the exhaust routes A,B.
- FIGS 4a-4d show a particular arrangement for diverter valve, as described with reference to Figures 1-3 . It will be appreciated that other forms of valve can also be used.
- the exhaust system of the invention provides an exhaust system in which different flow rates can be controlled, thus enabling comparative measurements to be obtained for different systems and for the efficiency of exhaust systems to be monitored without adversely affecting the flow of exhaust gases through the system.
- the diverter valve 28 comprises a butterfly valve of the type described hereinabove with reference to Figures 1 to 3 and Figures 4a to 4d .
- the two butterfly members 36 forming the diverter valve 28 each comprise blades 50 formed on both the input face 21, and the output face 23 of each butterfly valve member 36.
- One of the butterfly members 36 controls the flow of exhaust gases in a first exhaust route A
- the second butterfly member controls the flow of exhaust gases in a second exhaust route B.
- the blades 50 cause disruption in the flow of exhaust gases in each of the exhaust routes A, B.
- exhaust route A this results in a substantially complete mixing of exhaust gases which allows a fully representative sample to be collected and tested by a gas sensor 86.
- exhaust route B the disruption to flow caused by the blades 50 in the diverter valve member 36 results in a more even distribution of gases across the face 58 of catalyst 60 forming part of the catalyst system 54.
- the walls 62 of the diverter valve 28 in exhaust route A are convex. This produces a venturi effect which enhances swirl caused by the diverter valve 28, further increasing the evenness of distribution across the face 58 of catalyst 60.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Valve Device For Special Equipments (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
- The invention relates to an exhaust system for use with an engine system and, in particular, relates to an exhaust system for a dual fuel engine system.
- EU regulations require engine emissions to meet particular standards in terms of the types and quantities of gases emitted. Engine emissions depend on may factors including the type and amount of fuel injected into the engine for combustion, and post combustion gas treatment.
- In dual fuel engines where the delivery of diesel fuel and gas fuel is controlled by one or more engine computers, it is important to control the amount of methane contained in exhaust gases.
- In order to assess the efficiency and effectiveness of a proposed exhaust gas management system, or to assess the efficiency and effectiveness of an existing exhaust gas management system, it is necessary to make comparative measurements.
- European patent application No.
EP 0 808 999 discloses an exhaust control valve that is connected to an exhaust manifold of an internal combustion engine of an automobile. In the exhaust control valve, either of two valve discs is opened, and an exhaust gas flows in one of the exhaust pipes. A first catalytic converter is provided on one of the exhaust pipes, and a second catalytic converter is provided to a collecting pipe to which the two exhaust pipes emerge. A temperature sensor detects temperature of the second catalytic converter to operator control circuit. When the temperature sensor detects that the second catalytic converter is below 500°C, an actuator is operated by the control circuit via a solenoid valve and a negative pressure tank to open one of the valve discs to flow the exhaust gas into the exhaust pipe having the first catalytic converter to purify hazardous substance in the low temperature exhaust gas. - According to a first aspect of the invention there is provided an exhaust system for an engine system, the exhaust system comprising a pipe system having at least one input port for receiving exhaust gases from the engine system and at least one output port for venting exhaust gases from the exhaust system wherein the pipe system includes at least two exhaust routes for flow of gases from the one or more input ports to the one or more output ports, and further includes a diverter valve operable in response to a control input to control the flow of exhaust gases through the pipe system through one or more of the exhaust routes, the diverter valve comprising at least two butterfly valve members, each butterfly valve member controlling the flow of exhaust gases via one of said exhaust routes, each member having an input face and an output face, characterised in that at least one input face comprises one or more blades for disrupting the flow of exhaust gases emitted from the engine system, and in that the diverter valve comprises walls associated with each butterfly member, the walls associated with at least one of the butterfly members being convex whereby, in use, a venturi effect is produced.
- The terms "input face" and "output face" used to describe the butterfly valve members, refer to the orientation of the faces of the butterfly valve member when that member is in the closed position. When a butterfly valve member is in the closed position, it will have one face that is directed towards an input port, which face has been described as the input face, and a face that is directed towards an output port, which face has been described as an output face.
- It is to be understood, however, that when a butterfly valve member is in an open position, its faces will no longer be so orientated, and will instead take up a position approximately perpendicular to the position of the faces in the closed position.
- The provision of a diverter valve provides an effective arrangement for enabling the efficiency and effectiveness of a particular exhaust gas management system to be assessed. This is because the diverter valve enables the flow of exhaust gases from an engine to be directed along one of at least two exhaust routes. It is therefore possible to compare the efficiency and effectiveness of at least two exhaust arrangements using the same engine. This enables a more accurate and consistent comparison of the two arrangements to be made. For example, it is possible to compare an exhaust arrangement including a catalyst treatment system with an exhaust arrangement excluding a catalyst, or to directly compare the efficiency of different catalysts.
- The provision of the diverter valve in the pipe system also enables effective measurements to be made by diverting the exhaust gases to a sensor chamber without affecting the flow of exhaust gases through the exhaust system.
- The one or more blades create disruption in the flow of exhaust gases, and thus disrupt laminar exhaust gas flow. Further, the disruption of laminar flow allows the exhaust gases to expand which results in a more even distribution of exhaust gases.
- The one or more blades may cause either turbulence in the exhaust gases, or may induce a swirling motion in the exhaust gases.
- A turbulent flow is generally regarded as being fluid flow in which the particle motion of the fluid at any point varies rapidly in magnitude and direction. This results in irregular eddy motion. On the other hand, a swirling motion is one in which the particle motion is substantially helical, and will have either a clockwise or counter-clockwise sense.
- When the exhaust system further comprises a catalyst treatment system comprising a catalyst having an exposed face, in at least one of the exhaust routes, the diverter valve causes a more even distribution of exhaust gases over the exposed face of the catalyst.
- In known exhaust systems, it is known that high speed gases emitted from the engine tend to form a path through the centre of the core of a catalyst, and do not spread across the entire exposed face of the catalyst. This results in the outer perimeter of the catalyst receiving a disproportionately low flow of exhaust gases. This in turn leads to inefficiencies in the catalytic conversion of the exhaust gases.
- The convex walls form a venturi, and in combination with the one or more blades further improves the even distribution of exhaust gases across the face of a catalyst positioned in one of the exhaust routes, thereby improving the efficiency of the catalytic conversion.
- Advantageously, at least one output face comprises output disrupting means for creating turbulence in exhaust gases.
- Other advantageous features of the invention will become apparent from dependent Claims 2-24.
- According to a second aspect of the present invention, there is provided an engine system including an engine, and an exhaust system comprising a pipe system having at least one input port for receiving exhaust gases from the engine system and at least one output port for venting exhaust gases from the exhaust system wherein the pipe system includes at least two exhaust routes for flow of gases from the one or more input ports to the one or more output ports, and further includes a diverter valve operable in response to a control input to control the flow of exhaust gases through the pipe system through one or more of the exhaust routes, the diverter valve comprising at least two butterfly valve members, each butterfly valve member controlling the flow of exhaust gases via one of said exhaust routes, each member having an input face and an output face, characterised in that at least one input face comprises one or more blades for disrupting the flow of exhaust gases emitted from the engine system, and in that the diverter valve comprises walls associated with each butterfly member, the walls associated with at least one of the butterfly members being convex whereby, in use, a venturi effect is produced.
- Embodiments of the invention will now be described, by way of nonlimiting examples, with reference to the accompanying drawings in which:
-
Figure 1 is a schematic illustration of an exhaust system according to an embodiment of the invention; -
Figure 2 is a schematic illustration of an exhaust system according to another embodiment of the invention; -
Figure 3 is a schematic illustration of an exhaust system according to a yet further embodiment of the invention; -
Figures 4a-4d show a diverter valve of the exhaust systems ofFigures 1-3 ; and -
Figures 5 ,6a and 6b illustrate a diverter valve forming part of the invention. - An
exhaust system 10 according to an embodiment of the invention is shown inFigure 1 . - The
exhaust system 10 includes apipe system 12 connected to the exhaust of anengine 14. Thepipe system 12 includes twoinput ports engine 14. - The pipe system also includes an
output port 18 for venting exhaust gases from theexhaust system 10. - One of the
input ports 15 of thepipe system 12 is defined by one end of acatalyst treatment system 20. Thecatalyst treatment system 20 includes a pre-catalyst 22 and amain catalyst 24 connected in series. Thecatalyst treatment system 20 defines a first exhaust route A through thepipe system 12 for exhaust gases from theengine 14, and is connected at its other end to aninput pipe 26 of adiverter valve 28. - The other of the
input ports 16 of thepipe system 12 is defined by one end of abypass pipe 30. Thebypass pipe 30 defines a second exhaust route B through thepipe system 12 for exhaust gases from theengine 14, and is connected at its other end to asecond input pipe 32 of thediverter valve 28. - The two
input pipes diverter valve 28 merge into asingle output pipe 34. - Each of the
input pipes butterfly valve member 36 defined by a circular disc 38 (Figures 4a and 4b ) pivotally mounted within therespective pipe circular discs 38 corresponds in diameter to the internal diameter of therespective pipe butterfly valve member 36 is moved to its closed position Oc, it blocks the flow of gas through the pipe. - The
butterfly valve members 36 are pivotally mounted on acommon spindle 40 at an angle of 90° to each other. This ensures that when one of thevalve members 36 is in its open position OP, the other of thevalve members 36 is in its closed position Oc, thereby ensuring that one of thevalve members 36 is always open. Failure of the engine system, through blockage of the flow of exhaust gases through theexhaust system 10, is thereby prevented. - The
spindle 40 is rotatably mounted in thebody 42 of thediverter valve 28 defined by the input andoutput pipes solenoid 44 mounted on the body 42 (seeFigures 4c and 4d ) to control rotation of thespindle 40 in thebody 42. - The
solenoid 44 is preferably controlled by a switch (not shown) such as, for example, an electronic switch. The switch may be operated directly, or it may include a receiver (not shown) to receive signals from a transmitter and permit control of the switch, and therefore thesolenoid 44, from a remote location. - The exhaust route A,B taken by exhaust gases from the
engine 14, through thepipe system 12, is determined by the relative orientation of thebutterfly valve members 36 in thediverter valve 28. For example, when thebutterfly valve member 36 in thefirst input pipe 26 is in its open position OP, exhaust gases from theengine 14 pass through thecatalyst treatment system 20. Similarly, when thebutterfly valve member 36 in thesecond input pipe 32 is in its open position OP, exhaust gases from theengine 14 pass through thebypass pipe 30. - The
output pipe 34 of thediverter valve 28 is connected to aninput pipe 45 of a continuously regeneratingtrap 46, which in turn is connected to anexhaust outlet pipe 48 defining theoutput port 18 of thepipe system 12. - The continuously regenerating
trap 46 separates non-compliant emission particulates from exhaust gases passing therethrough. - An
exhaust gas sensor bypass pipe 30 and in thecatalyst treatment system 20, downstream of themain catalyst 24, to identify and measure the quantities of one or more gases in the exhaust gases. - The type of
sensor bypass pipe 30 and thecatalyst treatment system 20 is determined by the fuel used in theengine 14 connected to theexhaust system 10. For example, in a dual fuel engine using gas and diesel, thesensor - The provision of a
sensor catalyst treatment system 20 to be compared with that of asimple bypass pipe 30 having no catalyst. - It is envisaged that the
diverter valve 28 will permit comparison of the two routes under different engine loading conditions simply by operating thesolenoid 44 to vary the exhaust route A,B through thepipe system 12 which is taken by exhaust gases emitted by theengine 14. - The exhaust
gas outlet pipe 48 preferably includes anexhaust gas sensor 52. - This allows the content of exhaust gases emitted into the atmosphere from the
outlet pipe 48 to be monitored. - As with the
sensor bypass pipe 30 and thecatalyst treatment system 20, the particular type ofsensor 52 installed in the exhaustgas outlet pipe 48 is determined by the fuel used in theengine 14 connected to theexhaust system 10. For example, in a dual fuel engine using gas and diesel, thesensor 52 is preferably a methane sensor to determine the quantity of methane contained in the exhaust gases. - The
sensors exhaust system 10 may include transmitters which permit thesensors diverter valve 28 and/or control the fuel injection in theengine 14. - In other embodiments, the
diverter valve 28 may be reversed and positioned between theengine 14 and the exhaust routes A,B. In such embodiments, the exhaust ofengine 14 is connected topipe 34 of thediverter valve 28, thecatalyst treatment system 20 is connected topipe 26 and thebypass pipe 30 is connected topipe 32. Both thecatalyst treatment system 20 and thebypass pipe 30 are connected at their other ends to theinput pipe 45 of thecontinuous regenerating trap 46. Again the relative positions of thebutterfly valve members 36 in thediverter valve 28 determine which exhaust route A,B is taken by exhaust gases emitted by theengine 14. - An
exhaust system 60 according to another embodiment of the invention is shown inFigure 2 . The same reference numerals are used to identify parts similar to those described with reference toFigure 1 . - As in the embodiment described with reference to
Figure 1 , theexhaust system 60 includes apipe system 12 connected to the exhaust of anengine 14. In this embodiment, however, thepipe system 12 includes asingle input port 115 for receiving exhaust gases from theengine 14. - The
pipe system 12 also includes anoutput port 18 for venting exhaust gases from theexhaust system 60. - The
input port 115 of thepipe system 12 is defined by aninput pipe 34 of thediverter valve 28. Theinput pipe 34 of thediverter valve 28 splits to form twooutput pipes - One of the
output pipes 26 is connected to one end of acatalyst treatment system 120 including a pre-catalyst 122 and amain catalyst 124 connected in series. Thecatalyst treatment system 120 defines a first exhaust route A through thepipe system 12 for exhaust gases from theengine 14, and is connected at its other end to aninput pipe 45 of acontinuous regenerating trap 46. - The
other output pipe 32 is connected to one end of anothercatalyst treatment system 220 including a pre-catalyst 222 and amain catalyst 224 connected in series. The secondcatalyst treatment system 220 defines a second exhaust route B through thepipe system 12 for exhaust gases from theengine 14, and is connected at its other end to theinput pipe 45 of thecontinuous regenerating trap 46. - The
continuous regenerating trap 46 is connected to anexhaust outlet pipe 48 defining theoutput port 18 of theexhaust system 60. - In a similar manner to the embodiment described with reference to
Figure 1 , each ofoutput pipes diverter valve 28 includes abutterfly valve member 36 movable between an open position OP and a closed position Oc (Figures 4a and 4b ). - The mounting and operation of the
butterfly valve members 36 in thediverter valve 28 of theexhaust system 60 is essentially identical to that described with reference to theexhaust system 10 shown inFigure 1 . - The exhaust route A,B taken by exhaust gases from the
engine 14, through thepipe system 12, is determined by the relative orientation of thebutterfly valve members 36 in thediverter valve 28. For example, when thebutterfly valve member 36 in thefirst output pipe 26 is in its open position OP, exhaust gases from theengine 14 pass through the firstcatalyst treatment system 120. Similarly, when thebutterfly valve member 36 in thesecond output pipe 32 is in its open position OP, exhaust gases from theengine 14 pass through the secondcatalyst treatment system 220. - An
exhaust gas sensor 150 is preferably provided downstream of the main catalysts 124,224 to identify and measure the quantities of one or more gases in the exhaust gases. Thesensor 150 may include a single sensor located in theinput pipe 45 of thecontinuous regenerating trap 46. Alternatively, thesensor 150 may include a separate sensor in each of the first and second catalyst treatment systems 120,220. - The type of
sensor 150 is determined by the fuel used in theengine 14 connected to theexhaust system 60. For example, in a dual fuel engine using gas and diesel, thesensor 150 is preferably a methane sensor to determine the quantity of methane contained in the exhaust gases. - The provision of a
sensor 150 provides means for analyzing exhaust gases passing through each of the routes A,B, and thereby permits comparative measurements to be made. It therefore enables the efficiency and effectiveness of the firstcatalyst treatment system 120 to be compared with that of the secondcatalyst treatment system 220. - It is also envisaged that the
diverter valve 28 will make it possible to increase the lifetime of theexhaust system 60 by enabling the provision of twocatalyst treatment systems - In particular, if one of the
catalyst treatment system - The exhaust
gas outlet pipe 48 preferably includes anexhaust gas sensor 152. - This allows the content of exhaust gases emitted into the atmosphere from the
outlet pipe 48 to be monitored. - As with the
sensor 150 installed in each of the first and second catalyst treatment systems 120,220, the particular type ofsensor 152 installed in the exhaustgas outlet pipe 48 is determined by the fuel used in theengine 14 connected to theexhaust system 60. For example, in a dual fuel engine using gas and diesel, thesensor 152 is preferably a methane sensor to determine the quantity of methane contained in the exhaust gases. - The sensors 150,152 provided in the
exhaust system 10 may include transmitters which permit the sensors 150,152 to transmit measurements to acentral control unit 62. Thecontrol unit 62 may then use the measurements to control thediverter valve 28 and/or control the fuel injection in theengine 14. - The
control unit 62 is preferably linked to aremote control computer 64 so that performance of theexhaust system 60 may be monitored from a remote location. - In arrangements where the
engine 14 is a dual fuel engine, information from engine sensors may be passed to adiesel control module 66 and information from gas sensors may be passed to agas control module 68. On the basis of this information, the diesel andgas control modules - In other embodiments, the exhaust system may comprise a single control module for controlling both the diesel and the gas injector.
- Information from the diesel and
gas control modules cab display module 70 within the vehicle together with information acquired from other components in the vehicle. This enables the vehicle operator to monitor the performance of the engine. - This vehicle and/or engine information may also be passed to the
control unit 62 to assist it in controlling thediverter valve 28. It may also, in turn, be passed to theremote control computer 64. - An
exhaust system 80 according to a yet further embodiment of the invention is shown inFigure 3 . Again the same reference numerals are used to identify similar components. - In this embodiment, which is particularly advantageous for use with a
dual fuel engine 14, theexhaust system 80 includes apipe system 12 connected to the exhaust of anengine 14. As with the embodiment described with reference toFigure 2 , thepipe system 12 includes asingle input port 115 for receiving exhaust gases from theengine 14. - The
pipe system 12 also includes anoutput port 18 for venting exhaust gases from theexhaust system 80. - The
input port 115 of thepipe system 12 is defined by one end of acatalyst treatment system 320 including a pre-catalyst 322 and amain catalyst 324 connected in series. - The
catalyst treatment system 320 is connected at its other end to aninput pipe 34 of thediverter valve 28. Theinput pipe 34 of thediverter valve 28 splits to form twooutput pipes - One of the
output pipes 26 is connected to aninput pipe 82 of achamber 84.Input pipe 82 andchamber 84 define a first exhaust route A through thepipe system 12 for exhaust gases from theengine 14. Thechamber 84 includes an open valve (not shown) which allows the controlled release of exhaust gases directed to thechamber 84, and thereby defines anoutput port 18a of theexhaust system 80. Thechamber 84 also includes amethane sensor 86. - The
other output pipe 32 is connected to anexhaust outlet pipe 88. Theexhaust outlet pipe 88 defines a second exhaust route B through thepipe system 12 for exhaust gases from theengine 14, and defines anoutput port 18b of theexhaust system 80. - In a similar manner to the embodiments described with reference to
Figures 1 and2 , each ofoutput pipes diverter valve 28 includes abutterfly valve member 36 movable between an open position OP and a closed position Oc (Figures 4a and 4b ). - The mounting and operation of the
butterfly valve members 36 in thediverter valve 28 of theexhaust system 80 is essentially identical to that described with reference to theexhaust systems Figures 1 and2 . - The exhaust route A,B taken by exhaust gases from the
engine 14, through thepipe system 12, is determined by the relative orientation of thebutterfly valve members 36 in thediverter valve 28. For example, when thebutterfly valve member 36 in thefirst output pipe 26 is in its open position OP, exhaust gases from theengine 14 are passed viainput pipe 82 intochamber 84. Similarly, when thebutterfly valve member 36 in thesecond output pipe 32 is in its open position OP, exhaust gases from theengine 14 are passed to theexhaust outlet pipe 88. - The arrangement of the
chamber 84 forms a "dwell chamber" which allows the exhaust gases to be held in the vicinity of themethane sensor 86 when thebutterfly valve member 36 in thefirst output pipe 26 is in its open position OP, before the exhaust gases are released from thechamber 84. This allows thesensor 86 to sample more effectively. - The provision of the
diverter valve 28 in theexhaust system 80 shown inFigure 3 enables the efficiency and effectiveness of thecatalyst treatment system 320 to be tested by directing the exhaust gases intochamber 84, when required. - The
methane sensor 86 preferably includes a transmitter which allows themethane sensor 88 to transmit measurements to acentral control unit 62. - The
control unit 62 may then pass this information on to aremote control computer 64. - As with the embodiment described with reference to
Figure 2 , thecontrol unit 62 may receive information from the diesel andgas control units remote control computer 64. - The
control unit 62 preferably includes a transmitter to control thediverter valve 28, thereby permitting remote control and monitoring of the environment within the exhaust system. - In each of the embodiments described with reference to
Figures 1-3 , thediverter valve 28 may be controlled, either electrically or remotely, to control the flow of exhaust gases through thepipe system 12 in the event that one of the exhaust routes A,B becomes blocked or malfunctional. - In each of the embodiments described with reference to
Figures 1-3 , thediverter valve 28 may also include a failsafe arrangement which is operable to control the flow of exhaust gases through thepipe system 12 in the event of a power failure in thediverter valve 28. In such an arrangement, thebutterfly valve members 36 may be movable to ensure that the exhaust gases pass along a predetermined one of the exhaust routes A,B by way of default. Alternatively, or in addition, thebutterfly valve members 36 may be movable to ensure that in the event that one of the exhaust routes A,B is blocked, for example, in a power failure situation, the exhaust gases pass along the other of the exhaust routes A,B. -
Figures 4a-4d show a particular arrangement for diverter valve, as described with reference toFigures 1-3 . It will be appreciated that other forms of valve can also be used. - The exhaust system of the invention provides an exhaust system in which different flow rates can be controlled, thus enabling comparative measurements to be obtained for different systems and for the efficiency of exhaust systems to be monitored without adversely affecting the flow of exhaust gases through the system.
- Referring now to
Figures 5 to 6b , a diverter valve suitable for use in an exhaust system according to the present invention is shown in more detail. Thediverter valve 28 comprises a butterfly valve of the type described hereinabove with reference toFigures 1 to 3 andFigures 4a to 4d . The twobutterfly members 36 forming thediverter valve 28 each compriseblades 50 formed on both the input face 21, and the output face 23 of eachbutterfly valve member 36. One of thebutterfly members 36 controls the flow of exhaust gases in a first exhaust route A, and the second butterfly member controls the flow of exhaust gases in a second exhaust route B. Theblades 50 cause disruption in the flow of exhaust gases in each of the exhaust routes A, B. In exhaust route A, this results in a substantially complete mixing of exhaust gases which allows a fully representative sample to be collected and tested by agas sensor 86. In exhaust route B, the disruption to flow caused by theblades 50 in thediverter valve member 36 results in a more even distribution of gases across theface 58 ofcatalyst 60 forming part of thecatalyst system 54. - The
walls 62 of thediverter valve 28 in exhaust route A are convex. This produces a venturi effect which enhances swirl caused by thediverter valve 28, further increasing the evenness of distribution across theface 58 ofcatalyst 60. - Although the illustrated embodiments include a regenerating trap, it is to be understood that in other embodiments of the invention there may be no regenerating trap present.
Claims (24)
- An exhaust system (10) for an engine system (14), the exhaust system (10) comprising a pipe system (12) having at least one input port (15:16) for receiving exhaust gases from the engine system (14) and at least one output port (18) for venting exhaust gases from the exhaust system (10) wherein the pipe system (12) includes at least two exhaust routes (A, B) for flow of gases from the one or more input ports (15:16) to the one or more output ports (18), and further includes a diverter valve (28) operable in response to a control input to control the flow of exhaust gases through the pipe system (12) through one or more of the exhaust routes (A, B), the diverter valve (28) comprising at least two butterfly valve members (36), each butterfly valve member (36) controlling the flow of exhaust gases via one of said exhaust routes (A, B), each member having an input face (21) and an output face (23), characterised in that at least one input face (21) comprises one or more blades (50) for disrupting the flow of exhaust gases emitted from the engine system (14), and in that the diverter valve (28) comprises walls associated with each butterfly member (36), the walls associated with at least one of the butterfly members (36) being convex whereby, in use, a venturi effect is produced.
- An exhaust system (10) according to Claim 1 wherein each input face (21) comprises one or more blades (50).
- An exhaust system (10) according to any one of the preceding claims wherein at least one output face (23) comprises one or more blades (50).
- An exhaust system (10) according to Claim 3 wherein each output face (23) comprises one or more blades (50).
- An exhaust system (10) according to any one of the preceding claims wherein at least one of said exhaust routes (A, B) includes a catalyst treatment system (20).
- An exhaust system according to Claim 5 wherein the or each said one of said exhaust routes (A, B) includes an exhaust gas sensor (50a, 50b) positioned downstream from the catalyst treatment system (20).
- An exhaust system (10) according to Claim 5 or Claim 6 wherein at least one other of said exhaust routes (A,B) is defined by a bypass pipe (30).
- An exhaust system (10) according to Claim 7 wherein the or each bypass pipe (30) includes an exhaust gas sensor (50a, 50b).
- An exhaust system (10) according to any one of the preceding claims wherein at least one other of said exhaust routes (A, B) includes a catalyst treatment system (20).
- An exhaust system (10) according to Claim 9 wherein the or each said one other of said exhaust routes (A, B) includes an exhaust gas sensor (50a, 50b) positioned downstream from the catalyst treatment system (20).
- An exhaust system (10) according to any of Claims 5 to 10 further including an exhaust outlet pipe (12) via which exhaust gases exit the exhaust system (10), said exhaust outlet pipe (12) including an exhaust gas sensor (50a, 50b).
- An exhaust system (10) according to Claim 11 wherein the exhaust outlet pipe (12) includes a continuously regenerating trap (46).
- An exhaust system (10) according to any one of Claims 6, 8, 10 and 11 wherein the or each exhaust gas sensor (50a, 50b) is a methane sensor (86).
- An exhaust system (10) according to Claim 1 wherein at least one (A) of said exhaust routes (A, B) includes a chamber (84) assembly having an open valve and a methane sensor, and the other (B) of said exhaust routes (A, B) is defined by an exhaust pipe (12).
- An exhaust system (10) according to Claim 14 wherein exhaust gases are directed to the diverter valve (28) via a catalyst treatment system (320), and the diverter valve (28) controls flow to either the chamber (84) assembly or the exhaust pipe (12).
- An exhaust system (10) according to any one of Claims 6, 8, 10, 11 and 14 wherein the or each exhaust gas sensor (50a, 50b) includes a transmitter to transmit data collected by the or each sensor (50a, 50b) to a data acquisition and control unit (62).
- An exhaust system (10) according to any one of the preceding claims wherein the diverter valve (28) includes at least one pair of butterfly valve members (36) mounted on a common spindle at 90° to each other such that when one butterfly valve member (36) is open the other is closed, and vice versa, the diverter valve (28) further including a solenoid (44) to operate the butterfly valve members (36).
- An exhaust system (10) according to Claim 17 wherein the solenoid (44) is operable by means of a switch.
- An exhaust system (10) according to Claim 17 wherein the switch includes a receiver permitting operation of the switch from a remote location.
- An exhaust system (10) according to Claim 16 and Claim 18 or Claim 19 wherein the data acquisition and control unit (62) controls operation of the solenoid (44) in response to measurements received from the or each exhaust gas sensor (50a, 50b).
- An exhaust system (10) according to any one of Claims 17 to 20 when dependent from Claim 8 wherein the diverter valve (28) includes a failsafe arrangement which is operable to direct exhaust gases through a catalyst treatment system (20) in the event of a power failure in the diverter valve (28).
- An exhaust system (10) according to Claim 21 wherein the failsafe arrangement includes a return spring.
- An engine system (14) including an engine and an exhaust system (10) according to any one of Claims 1-22.
- An engine system (14) according to Claim 23 wherein the engine is a dual fuel engine.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200431788T SI1601863T1 (en) | 2003-02-28 | 2004-03-01 | Exhaust system |
PL04715949T PL1601863T3 (en) | 2003-02-28 | 2004-03-01 | Exhaust system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0304629.9A GB0304629D0 (en) | 2003-02-28 | 2003-02-28 | Exhaust system |
GB0304629 | 2003-02-28 | ||
PCT/GB2004/000821 WO2004076830A1 (en) | 2003-02-28 | 2004-03-01 | Exhaust system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1601863A1 EP1601863A1 (en) | 2005-12-07 |
EP1601863B1 true EP1601863B1 (en) | 2011-09-28 |
Family
ID=9953866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04715949A Expired - Lifetime EP1601863B1 (en) | 2003-02-28 | 2004-03-01 | Exhaust system |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1601863B1 (en) |
AT (1) | ATE526494T1 (en) |
DK (1) | DK1601863T3 (en) |
ES (1) | ES2392829T3 (en) |
GB (1) | GB0304629D0 (en) |
PL (1) | PL1601863T3 (en) |
PT (1) | PT1601863E (en) |
SI (1) | SI1601863T1 (en) |
WO (1) | WO2004076830A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11274582B2 (en) | 2016-12-22 | 2022-03-15 | Perkins Engines Company Limited | Flow hood assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7522994B2 (en) | 2005-12-20 | 2009-04-21 | Caterpillar Inc. | Exhaust control system implementing fuel quality detection |
GB2551160B (en) * | 2016-06-08 | 2020-03-25 | Jaguar Land Rover Ltd | Valve assembly |
FR3085716B1 (en) * | 2018-09-10 | 2021-05-07 | Renault Sas | DEVICE FOR DEPOLLUTION OF EXHAUST GASES FROM AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE AND PROCEDURE FOR CONTROLLING SUCH A DEVICE |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1212320A (en) * | 1957-10-10 | 1960-03-23 | Wheeler Valve Corp | Check valve for fluid transmission lines |
JPH01163246A (en) * | 1987-02-24 | 1989-06-27 | Meidensha Corp | Polymer composition with high dielectric constant |
DE4426028C1 (en) * | 1994-07-22 | 1995-11-30 | Gillet Heinrich Gmbh | Butterfly valve for I.C. engine exhaust line |
GB2294556B (en) * | 1994-10-25 | 1997-01-15 | Nissan Motor | Exhaust emission control system for internal combustion engine |
EP0808999A1 (en) * | 1996-05-20 | 1997-11-26 | Fuji Oozx Inc. | Purification control device for exhaust gas |
JP2000303828A (en) * | 1999-04-20 | 2000-10-31 | Toyota Motor Corp | Exhaust emission control device of hybrid car |
JP4006613B2 (en) * | 2000-04-19 | 2007-11-14 | 日産自動車株式会社 | Apparatus for measuring hydrogen content in exhaust gas and exhaust gas purification system |
JP2002188432A (en) * | 2000-12-19 | 2002-07-05 | Isuzu Motors Ltd | Exhaust gas purifying device for diesel engine |
-
2003
- 2003-02-28 GB GBGB0304629.9A patent/GB0304629D0/en not_active Ceased
-
2004
- 2004-03-01 SI SI200431788T patent/SI1601863T1/en unknown
- 2004-03-01 PT PT04715949T patent/PT1601863E/en unknown
- 2004-03-01 DK DK04715949.6T patent/DK1601863T3/en active
- 2004-03-01 WO PCT/GB2004/000821 patent/WO2004076830A1/en active Application Filing
- 2004-03-01 PL PL04715949T patent/PL1601863T3/en unknown
- 2004-03-01 AT AT04715949T patent/ATE526494T1/en active
- 2004-03-01 EP EP04715949A patent/EP1601863B1/en not_active Expired - Lifetime
- 2004-03-01 ES ES04715949T patent/ES2392829T3/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11274582B2 (en) | 2016-12-22 | 2022-03-15 | Perkins Engines Company Limited | Flow hood assembly |
Also Published As
Publication number | Publication date |
---|---|
ATE526494T1 (en) | 2011-10-15 |
EP1601863A1 (en) | 2005-12-07 |
WO2004076830A1 (en) | 2004-09-10 |
PT1601863E (en) | 2011-10-20 |
PL1601863T3 (en) | 2012-02-29 |
SI1601863T1 (en) | 2012-01-31 |
ES2392829T3 (en) | 2012-12-14 |
GB0304629D0 (en) | 2003-04-02 |
DK1601863T3 (en) | 2012-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7621128B2 (en) | Combined EGR valve and cooler by-pass | |
US5806308A (en) | Exhaust gas recirculation system for simultaneously reducing NOx and particulate matter | |
CN101010585B (en) | System for diagnosing reagent solution quality and emissions catalyst degradation | |
CN101657623B (en) | Combustion engine breathing systems, components thereof and methods of operating and controlling the same | |
CN101490399B (en) | Exhaust gas recirculation system of internal combustion engine | |
CN101903624B (en) | Apparatus and method for injection of a fluid for an exhaust gases treatment device | |
US9964013B2 (en) | Exhaust gas aftertreatment bypass system and methods | |
CN101943089A (en) | Exhaustgas module and method for controlling the amount of exhaust gas recirculation in theexhaust gas recirculation system | |
US20110203261A1 (en) | Snapper Valve for Hot End Systems with Burners | |
EP2216523A1 (en) | Low-temperature-actuated denitration device for diesel engine | |
CN103168159A (en) | Method and device for operating an internal combustion engine | |
CN105143627B (en) | Method, system, and apparatus for diagnosing an exhaust aftertreatment component | |
WO2018127401A1 (en) | Exhaust aftertreatment temperature control apparatus and method | |
EP3431731B1 (en) | Nox sensor protection for an internal combustion engine | |
CN102200075A (en) | Motor-driven vehicle with internal combustion engine and operation method thereof | |
US9032710B2 (en) | Diesel dosing system for active diesel particulate filter regeneration | |
CN109441597A (en) | Post-process protection system and post-processing guard method | |
EP1601863B1 (en) | Exhaust system | |
CN101512129A (en) | Low-idle exhaust gas recirculation system | |
EP1999348B1 (en) | Diesel exhaust dosing structure | |
US20200191067A1 (en) | Device for thc reducing of exhaust gas in cng-diesel dual fuel engine system | |
JP2020056405A (en) | Exhaust housing for internal combustion engine and method of guiding exhaust gas of internal combustion engine | |
US20230392534A1 (en) | Exhaust gas aftertreatment system | |
EP2004963B1 (en) | An exhaust gas plant for internal combustion engines | |
WO2021021378A1 (en) | Nox sensor protection system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20050922 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20080925 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: T. BADEN HARDSTAFF LIMITED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: KIRKER & CIE S.A. |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20111013 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602004034539 Country of ref document: DE Effective date: 20111124 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110928 |
|
REG | Reference to a national code |
Ref country code: PL Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20110402583 Country of ref document: GR Effective date: 20120117 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110928 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110928 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20110928 |
|
REG | Reference to a national code |
Ref country code: HU Ref legal event code: AG4A Ref document number: E012922 Country of ref document: HU |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20120629 |
|
BERE | Be: lapsed |
Owner name: T. BADEN HARDSTAFF LTD Effective date: 20120331 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20121001 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602004034539 Country of ref document: DE Effective date: 20120629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120331 Ref country code: CZ Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
REG | Reference to a national code |
Ref country code: SI Ref legal event code: KO00 Effective date: 20121023 |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: ML Ref document number: 20110402583 Country of ref document: GR Effective date: 20121008 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MM4A Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20121203 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2392829 Country of ref document: ES Kind code of ref document: T3 Effective date: 20121214 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20121130 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20120830 Year of fee payment: 9 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120402 Ref country code: HU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120302 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120331 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120331 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121008 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121203 Ref country code: SI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120302 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120331 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 526494 Country of ref document: AT Kind code of ref document: T Effective date: 20120301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111228 |
|
REG | Reference to a national code |
Ref country code: PL Ref legal event code: LAPE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20140311 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 Ref country code: TR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120301 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20140612 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20140226 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130302 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20140417 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602004034539 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150302 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151001 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150301 |