Abstract: An exhaust gas purification device for an internal combustion engine, provided in an exhaust passage of the internal combustion engine, includes: a filter-shape carrier adapted to trap particulate matter in exhaust gas; and an oxidation catalyst supported on the filter-shape carrier and comprising: a particulate oxygen storage material; and an oxygen ion conductive material supported around the oxygen storage material in surface contact therewith.

Abstract: An exhaust system for a motor vehicle includes a housing having an inflow funnel defined by an expanding cross sectional area. Received in the housing is an exhaust-gas treatment device which includes a tubular guide element arranged in the inflow funnel and having a curvature with an outer side formed with at least one embossment. The embossment causes a deflection of the exhaust-gas flow and thereby increases a contact time of the exhaust-gas flow with an insert of the exhaust-gas treatment device.

Abstract: A component of an exhaust system for a combustion engine, particularly of a motor vehicle, which at least in part regions includes a self-supporting jacket. The jacket includes a porous, open-pore or closed-pore cellularly constructed foam. The foam is of a self-supporting design. By using such a foam the insulation of the component can be improved.

Abstract: An exhaust assembly includes a water trap blocking upstream water flow at a plurality of angular positions enabling universal application and flexibility of orientation.

Abstract: A control system may include an adsorber bypass evaluation module, an adsorber bypass control module and an engine operation control module. The adsorber bypass evaluation module may evaluate a bypass closing criterion of a hydrocarbon adsorber bypass passage in an engine exhaust gas treatment device after an engine key-on condition. The adsorber bypass control module may be in communication with the adsorber bypass evaluation module and may close the hydrocarbon adsorber bypass passage after the key-on condition when the bypass closing criterion meets a predetermined condition. The engine operation control module may be in communication with the adsorber bypass control module and may start the engine after the closing.

Abstract: An exhaust system for a vehicle having a cab (53) and an internal combustion engine (1) located in an engine compartment (51). The system includes an exhaust gas treatment unit (9) located outside the engine compartment and having an inlet (9a) which receives exhaust gases from the engine and an outlet (9e) which passes treated gases into a final portion (E) of the exhaust system. The treatment unit (9) is arranged to extend generally vertically with the outlet (9e) generally vertically above the inlet (9a) and adjacent a corner post (52) of the cab of the vehicle to reduce impact on the visibility from the cab. A cage (C) surrounds the exhaust gas treatment unit (9) and has a support means (12) for attachment to a chassis of the vehicle and an outlet (15e) which the outlet (9e) of the treatment unit is connected.

Abstract: An exhaust manifold A includes, in its collecting part structure, a plurality of branch pipes 2 to 5 that are connected with a flange head 1, a collecting part 6 that collects and contains exhaust-gas downstream side end portions 2a to 5a of the branch pipes 2 to 5, a partition plate 10 that is arranged in a state where its exhaust-gas downstream side end portion 10a projects in the interior of the collecting part 6, and a sensor attachment boss part 9 that is fixed by weld line X on a part of an outer circumferential portion of the collecting part 6 in a state where it faxes an insertion hole 6f formed in the collecting part 6.

Abstract: An exhaust gas capture system for capturing the exhaust gas emitted by auxiliary engines, auxiliary boilers, and other sources on an Ocean Going Vessel (OGV) while at berth or at anchor so that these gases may be carried to an emissions treatment system for removal of air pollutants and or greenhouse gases. The exhaust gas capture system includes a manifold and a family of parallel-flow flexible ducts for connecting directly to individual OGV exhaust pipes. The exhaust gas capture system further includes apparatus for connecting the parallel-flow flexible ducts to the OGV exhaust pipes.

Abstract: Nitrogen oxide storage materials and methods of manufacturing nitrogen oxide storage materials are disclosed. The nitrogen oxide storage materials can be used to manufacture catalytic trap disposed in an exhaust passage of an internal combustion engine which is operated periodically between lean and stoichiometric or rich conditions, for abatement of NOx in an exhaust gas stream which is generated by the engine. In one embodiment, the nitrogen oxide storage material comprises alkaline earth material supported on ceria particles having a crystallite size of between about 10 and 20 nm and the alkaline earth oxide having a crystallite size of between about 20-40 nm.

Abstract: An exhaust gas treatment apparatus for a working machine is provided to reliably prevent a specific process that raises the exhaust temperature of an exhaust gas treatment section from being carried out during switching operation of a directional control valve.

Abstract: A device for the purification of exhaust gases in an exhaust gas system of an internal combustion engine includes at least one exhaust gas purification component through which exhaust gas can flow. The exhaust gas purification component is disposed in an outer pipe formed of titanium or a titanium alloy and, in particular, all structural components of the device are formed of titanium or a titanium alloy. A motor vehicle having the device is also provided.

Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.

Abstract: An exhaust gas purifying apparatus for an internal combustion engine includes a collector, a differential pressure sensing device, a differential pressure based estimating device, a partition wall exposure sensing device, and a second regenerating device. The collector captures exhaust particles in exhaust gas. The differential pressure sensing device senses a differential pressure across the collector. The differential pressure based estimating device estimates an accumulation amount of the exhaust particles based on the differential pressure. The partition wall exposure sensing device senses a partition wall exposure state. The second regenerating device forcibly completely combusts the exhaust particles captured in the collector when the partition wall exposure sensing device senses the partition wall exposure state.

Abstract: Provided is a control device for an internal combustion engine that can execute a sulfur purge in a favorable manner under all conditions without complicating the control action or the engine structure. The process comprises detecting a temperature of the NOx catalytic converter, detecting an exhaust air fuel ratio in the catalytic converter, computing a target exhaust air fuel ratio according to a detected temperature of the NOx catalytic converter, and controlling a fuel injection valve so as to make an actual exhaust fuel ratio agree with the target exhaust air fuel ratio. If the temperature of the NOx catalytic converter is not high enough to enable a sulfur purge, a temperature increase control is executed to increase the temperature of the NOx catalytic converter by suitably changing various engine parameters.

Abstract: An object of the present invention is to provide an engine having an exhaust gas treatment apparatus attached thereto, wherein an exhaust pipe 13 can be prevented from being damaged by a vibration of the engine body 1. To achieve the object, in the engine having the exhaust gas treatment apparatus attached thereto in which an exhaust gas treatment apparatus 4 is supported by an engine body 1 and the engine body 1 and the exhaust gas treatment apparatus 4 communicate with each other through an exhaust pipe 13, the casing of the exhaust gas treatment apparatus consists of a plurality of casing units 5, 6, and 7 separable from each other, connection flanges 8, 9, 10, and 11 are disposed in respective end portions of the casing units 5, 6, and 7, the casing units 5, 6, and 7 are coupled together by a connection of the connection flanges 8, 9, 10, and 11, and the exhaust gas treatment apparatus 4 is supported by the engine body 1 through the connection flanges 8, 9, 10, and 11.

Abstract: A reductant decomposition reactor for use in exhaust systems is provided that includes a middle tube portion formed with a reductant injector mount, an inlet tube, an outlet tube and a mixer. The inlet tube is formed at a first end of the middle tube portion and the outlet tube is formed at a second end of the middle tube portion and both are configured to create a sealed connection to different portions of the exhaust system. The mixer fits between the middle tube portion and the outlet tube and is configured to decompose the reductant in an exhaust stream. The injector mount comprises a tube like section that connects at a first end to the middle tube portion and at a second end to an injector port of the injector mount, and is configured to reduce recirculation flow patterns in the reactor, create a high velocity flow at an inner surface of the injector mount and thereby reduce the formation of reductant deposits.

Abstract: An engaging groove (47) with which a gasket (42) is engaged is provided in each of a front side projecting portion (44) and a rear side projecting portion (46) formed in a filter accommodating cylinder (37) to be positioned on an outer peripheral surface (44A, 46A) of each projecting portion (44, 46). Therefore, when the gasket (42) latches on each of the projecting portion (44; 46) to be fitted thereon from an outside, the gasket (42) can be engaged with the engaging groove (47) provided in each of the projecting portions (44, 46). In consequence, at the time of mounting and removing the filter accommodating cylinder (37), the falling-off of the gasket (42) can be prevented, and, for example, an inspection operation, a cleaning operation and the like of an accommodated particulate matter removing filter (41) can be easily performed.

Abstract: An exhaust component arrangement is provided for an off-road vehicle having an engine, a cab, a transmission connected to the engine, and a fuel tank adjacent the transmission. A portion of the fuel tank is positioned below a portion of the cab. The exhaust component arrangement includes a particulate filter unit, a NOx reduction unit, and an oxidation catalyst unit, all connected in series. The fuel tank has a recess formed in an upper surface thereof. A lower portion of one of the units is received in the recess. Preferably, a lower portion of the NOx reduction unit is received in the recess.

Abstract: An exhaust gas treatment device (1) for an exhaust system of an internal combustion engine has a housing (2), which has a jacket (4) and at least one bottom (7) on the end side. A simplified variant arises if at least one such bottom (7) is designed as a spherical or spherical segment-shaped hood. The hood (8) has a connection opening (9), and a connecting branch (10, 11) is attached to the hood (8) in the area of the connection opening (9).

Abstract: A mixing apparatus mountable within a generally cylindrical passage defined by an exhaust gas conduit of an exhaust gas after-treatment system is provided. The passage includes an outer region and an inner region operable to convey an exhaust stream and a liquid stream, such as a urea stream. The mixing apparatus includes a retainer ring operable to retain the mixing apparatus within the passage. A first plurality of fins extends from the retainer ring and is operable to impart a rotational velocity component in a first direction to the exhaust stream and urea stream in the outer region of the passage. A second plurality of fins extends from the retainer ring and is operable to impart a rotational velocity component in a second direction, opposite the first direction, to the exhaust stream and urea stream in the inner region of the passage.

Abstract: An exhaust processing device includes a main body tube portion and a closing tube portion. The main body tube portion includes an opening in an axial end thereof, houses a main body exhaust path in an inside thereof, which allows an exhaust gas to pass therethrough. The closing tube portion includes a plate portion and a tubular portion. The plate portion covers the opening of the axial end of the main body tube portion. The tubular portion radially outwardly protrudes from an outer peripheral surface of the main body tube portion, and is integrated with the plate portion. The tubular portion houses an exhaust path in an inside thereof, which communicates with the main body exhaust path. The tubular portion of the closing tube portion includes a first split half portion integrally molded with the plate portion, and a second split half portion joined to the first split half portion.

Abstract: To provide an exhaust pipe structure in which the length of the exhaust pipe can be elongated while the total dimension is restricted. Provided is an exhaust pipe structure which includes an upstream-side exhaust pipe connected to exhaust ports of an engine. An exhaust chamber is provided which has an exhaust-gas inlet and an exhaust-gas outlet, and in which the upstream-side exhaust pipe is connected to the exhaust-gas inlet. In addition, the exhaust pipe structure includes a downstream-side exhaust pipe which is connected to the exhaust-gas outlet and which extends in such a direction as to move away from the exhaust ports. In the exhaust pipe structure, the exhaust-gas inlet is formed at a position farther away from the exhaust ports than the exhaust-gas outlet is positioned.

Abstract: An environment-conservative fuel economizer includes a hollow tubular member and at least one ring member. The tubular member has an internal surface forming a reduced neck section. The ring member is mounted to an end of the tubular member. The ring member forms a plurality of cut-off slits, which defines a plurality of deformable leaves. The neck section of the tubular member forms a flow-accelerating passage, which increases speed of air flow passing therethrough to induce secondary combustion. The leaves are allowed to selectively expand/contract to effect complete combustion and reduce pollution. The fuel economizer is installed between an automobile air filter and engine air-intake tube to use the suction force induce by air intake of cylinder to draw in air so that the mixture density of air and atomized fuel is intensified to effect complete combustion of fuel and enhance instantaneously engine torque and reduce fuel consumption.

Abstract: An apparatus for treating an exhaust gas stream and having removable module(s) is disclosed. The apparatus comprises a housing, providing fixed boundaries at least between an inlet and an outlet and at least two sections arranged within said housing, the housing defining an interior exhaust passage that extends sequentially through said sections, wherein one or more treatments are to be performed upon a gas flowing through said sections. At least one of said sections is removable from within the fixed boundaries of the housing in a direction essentially perpendicular to said flow direction.

Abstract: A vehicle exhaust system includes a catalytic converter connected to an exhaust pipe. An exhaust filter is connected to the exhaust pipe downstream from the catalytic converter. The exhaust filter is a charcoal filter that filters particulates from the air flow in the exhaust pipe. The exhaust filter is threadingly engaged with the exhaust pipe and is disposable.

Abstract: Temperature control devices have become common to cool the exhaust stream from a diesel particulate filter before release into the environment. To further cool the filtered exhaust stream, a temperature control device has plates that are approximately parallel and in a spaced apart relationship. A vent is located between the plates. The plates have apertures. A shield is also used.

Abstract: An exhaust mounting system includes an exhaust component having a pair of ridges along an outer perimeter. A mounting band is disposed around the outer perimeter of the exhaust component between the ridges. An isolation pad is disposed between the exhaust component and the mounting bracket for absorbing vibration energy between the mounting band and the exhaust component.

Abstract: The present concepts relate to turbocharger exhaust arrangements. One example involves a system that includes an internal combustion engine configured with a turbocharger. The system also includes an exhaust arrangement comprising a post-turbocharger (PT) exhaust pipe connected to the turbocharger and positioned proximate to the internal combustion engine, the PT exhaust pipe extending away from the turbocharger along the internal combustion engine. The PT exhaust pipe includes a first portion extending above at least one part of a set of header exhaust pipes connecting the internal combustion engine with the turbocharger. The PT exhaust pipe also includes one or more additional connected and contiguous portions extending below at least one other part of the set of header exhaust pipes.

Abstract: An exhaust system for an internal combustion engine, having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and having a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, each exhaust tract comprising an exhaust gas purification device, a first silencer arranged on the outlet side of the respective exhaust gas purification device, and a second silencer arranged on the outlet side of the respective first silencer. Each exhaust tract includes a bypass line, it being possible for exhaust gas to be diverted via each bypass line, starting from the respective first silencer, bypassing the second silencers, and the bypass lines and hence the first silencers of both exhaust tracts being connected to one another by a mixing line.

Abstract: An exhaust cooling system of an amphibious vehicle operable in land and marine modes comprises an exhaust system to be cooled, at least one air-liquid heat exchanger, and coolant liquid in thermal communication with the exhaust system to be cooled and the air-liquid heat exchanger(s) and heated by the exhaust system. When the amphibious vehicle is operated, the coolant liquid is cooled by the air-liquid heat exchanger(s). Optionally, at least one liquid-liquid heat exchanger may be provided and the coolant liquid cooled by the liquid-liquid heat exchanger(s). The vehicle may plane, and have retractable road wheels. The air-liquid heat exchanger(s) may be mounted at the front or rear of the vehicle, or elsewhere.

Abstract: An exhaust gas treatment device has a housing and a hollow body through which exhaust gas flows and which is accommodated in the housing. The hollow body consists at least partly of a gas permeable substrate. The hollow body is connected at least one end to a wall member arranged in the housing and formed to be flexible in the axial direction.

Abstract: At least one embodiment of the invention relates to supplying ships in a harbor with external energy in order to prevent the formation of soot and CO2. For this purpose it is already known to supply ships with power from the wharfage. One problem in such a power supply provided from the wharf is that differences in the harbor's water level must be balanced for the power supply of a ship in the harbor. Furthermore, the operational readiness of such a power supply on land may be adversely affected, such as in the case of high water. At least one embodiment of the invention proposes a buoyant harbor power supply, e.g. the components of the harbor power supply are disposed on or in a buoyant device, particularly a barge.

Abstract: An hydraulic excavator is provided with an exhaust gas treatment apparatus in an exhaust pipe for effecting the purification treatment of exhaust gas including capturing the particulate matter in the exhaust gas. A space provided for mounting and removing a filter accommodating cylinder (31) is formed between the upstream cylinder (22) and the downstream cylinder (27). In particular, upwardly inclined connecting surfaces (23E and 28E) are provided on flange portions of upstream and downstream cylinders (22 and 27), respectively, and downwardly inclined connecting surfaces (32F and 32G) are provided on upstream side flange portions of filter accommodating cylinder (31). In consequence, a substantially V-shaped insertion space (S) which is gradually enlarged from a lower side to an upper side can be formed between the upstream cylinder (22) and the downstream cylinder (27).

Abstract: A CO2 control device and method for capturing CO2 from fluid flow, including: a flow-through apparatus and an CO2 absorbing filter treated with an alkaline material which is housed within the flow-through apparatus. The flow-through apparatus receives fluid flow and the CO2 from the fluid flow is absorbed by the CO2 absorbing filter. The absorbed CO2 is converted into CaCO3 which is combined with volcanic ash to form a useful cement material.

Abstract: A motor chain saw includes a housing with a housing wall, which has an opening for exhaust gases and a hood extending outside the housing through the opening, with a hood opening pointing to one side. Exhaust gases flowing from an interior of the housing in an exhaust jet (S) are guided to the outside through the opening. A fin is arranged on the opening and provides a silencer for exhaust gases directed towards a flow direction of the exhaust jet (S) escaping from the hood.

Abstract: An exhaust gas cleaning device (2) for an exhaust system (1) of an internal combustion engine with an exhaust gas cleaning element (7), which is arranged in a first tubular body (3), and with a second tubular body (4), to which the first tubular body (3) is detachably connected via a clamp connection (5). The clamp connection (5) includes a radially outwardly projecting first ring collar (8), formed at the first tubular body (3) and extending circumferentially in a closed form and a radially outwardly projecting second ring collar (9), formed at the second tubular body (4) and extending circumferentially in a closed form. A sealing ring (10) extends circumferentially in a closed form and is axially in contact with the first ring collar (8) and the second ring collar (9). A first ring body (11) is arranged on the outside at the first tubular body (3) and is axially in contact with the first ring collar on the side facing away from the sealing ring (10).

Abstract: An apparatus, system, and method are disclosed for determining a catalyst bed temperature. The method may include receiving a current fluid mass flow within an exhaust pipe and a total amount of unburned fuel available for catalytic combustion. The method may further include determining a plurality of fluid enthalpy values corresponding to various locations within the exhaust pipe. The method may continue with calculating an amount of fuel burned on an upstream catalyst based on the plurality of fluid enthalpy values, and determining an amount of fuel remaining that is available for combustion on a downstream catalyst. The method may determine a combustion efficiency of the downstream catalyst based on the temperature rise across the downstream catalyst, and an amount of heat generated within the downstream catalyst based on the combustion efficiency and the amount of fuel remaining that is available for combustion on the downstream catalyst.

Abstract: A housing for an exhaust gas purification component encloses an interior space in which at least one receptacle is formed by the housing at the outside. An exhaust system includes at least one first exhaust line section and the housing having the exhaust gas purification component. The first exhaust line section is in engagement with the receptacle, and the first exhaust line section and the receptacle are connected to one another in a materially integral manner. A motor vehicle having the exhaust system is also provided.

Abstract: An end cap for an exhaust treatment device is disclosed. The end cap has a cylindrical housing with an axial direction, a radial direction substantially orthogonal to the axial direction, a first open end, and a second closed end opposing the first open end in the axial direction. The end cap also has an integral port member extending from an annular surface of the cylindrical housing. The integral port member has a central axis aligned in the radial direction, and an exterior surface of the integral port member tangentially connects to an exterior surface of the cylindrical housing.

Abstract: A saddle-ride vehicle includes an engine with a front cylinder extended forward and diagonally upward from a crankcase. The engine is mounted between a front wheel and a rear wheel. A space gradually vertically extended forward is provided between a fuel tank arranged on the upside of the front cylinder and a front head cover provided to an upper part of the front cylinder. A radiator upstream water passage extended backward from an upper part of a radiator is provided in front of the front cylinder and is arranged in the space. The radiator upstream water passage is covered with a front overhead cover attached to the front cylinder. With this configuration, vehicle body components are not exposed, thereby protecting the vehicle body components. In addition, the appearance of the vehicle is efficiently enhanced.

Abstract: A system for providing heat to the dump body of a dump truck is disclosed. The disclosed system is suitable for use with truck equipped with a diesel particulate filter. When enabled, the system controls the exit path of exhaust gas such that it is routed to the dump body during normal operating conditions. In one embodiment, when the diesel particulate filter enters a regeneration cycle, high heat is produced. The system then routes the exhaust gas as to bypass the dump body to avoid heat damage from the higher temperature exhaust gas.

Abstract: A self-supporting mount for exhaust gas purification modules includes at least two retaining plates. The exhaust gas purification modules each have a cross sectional shape and at least one bead projecting beyond the main cross sectional shape and having a thickness. At least two of the exhaust gas purification modules pass at least partially through at least one of the retaining plates and are each fixed between the at least two retaining plates through the use of the bead. An exhaust system for a motor vehicle having at least one self-supporting mount, is also provided.

Abstract: An engine part has a construction which prevents the surface discoloration/deterioration associated with a high-temperature exhaust gas, irrespective of the type of Cr used in the formation of a chromium plating layer (hexavalent chromium or trivalent chromium). The engine part includes a metal substrate, a chromium plating layer covering at least a region of a surface of the metal substrate, the region being heated to a temperature of about 350° C. or more, and an intermediate plating layer provided between the metal substrate and the chromium plating layer. The chromium plating layer has a thickness of about 0.2 ?m or more in the region.

Abstract: The invention relates to a dilution and dispersion device for the exhaust and/or cooling gases of a vehicle's engine, that incorporates blades and a hub. The hub of said device incorporates means intended to reduce the loss in the gaseous flow rate generated by said gases. The flow rate loss reduction means are constituted by one or several openings in said hub or by a profiled element allowing said gases to be defected towards said blades. The blades are fastened to a ring.

Abstract: A vehicle, such as a motorcycle, includes an engine having first and second cylinder housings arranged in a V-shape such that a space is defined between the first and second cylinder housings. The first cylinder housing includes a first exhaust port and the second cylinder housing includes a second exhaust port. A first exhaust pipe is attached to the first exhaust port and is configured to facilitate passage of exhaust fluid from the first cylinder housing and toward a muffler. A second exhaust pipe is attached to the second exhaust port and is configured to facilitate passage of exhaust fluid from the second cylinder housing and toward the muffler. The second exhaust pipe extends through the space.

Abstract: A connecting structure of an exhaust system member and an insertion member includes a first divided part 44 and a second divided part 45 each formed like a semi-circular cylinder. The first and second divided parts 44 and 45 are coupled like a barrel so that projecting portions 45c are engaged with inner sides of bulge portions 44c, respectively, and end portions of the first and second divided parts 44 and 45 are contacted to form a circular cross section, the both edge portions of the first and second divided parts 44 and 45 being fixed with each other by welding X1 to form the exhaust system member (diffuser 43). After the insertion member (catalyst carrier case 41) is inserted in the end portion 43a of the diffuser 43a, the end portion and an outer circumferential surface of the catalyst carrier case 41 are fixed by welding X2 all along the outer circumferential surface.

Abstract: A housing of an exhaust gas treatment component is formed of a material having the following composition: iron: between 50 and 60 wt. %, nickel: between 16 and 24 wt. %, chromium: between 15 and 18 wt. %, aluminium: between 4 and 8 wt. %, and silicon: between 0.5 and 1.5 wt. %.

Abstract: Disclosed is an exhaust system for discharging combusted gases from the cylinder of a vehicle engine, which comprises an exhaust manifold with a plurality of exhaust gas runners, wherein the exhaust gas runners are spaced so as to avoid an exhaust gas interference.

Abstract: An energy recovery system for hybrid automobile. The energy recovery system generates electricity by utilizing the temperature difference between a high temperature thermal medium and a low temperature thermal medium. As the high temperature thermal medium, engine coolant for cooling an engine is used. As the low temperature thermal medium, pump refrigerant for cooling by a heat pump is used. The heat pump maintains the pump refrigerant at a low temperature by using heat from the engine coolant. Therefore, while electricity is reliably generated at a thermoelectric converter, energy is efficiently used for cooling the pump refrigerant.

Abstract: A catalytic combustion apparatus is equipped with a reactor for catalytically burning a gas to be treated containing a combustible organic compound, which further comprises a condensate forming means for condensing a part of a gas after reaction in the reactor, to form a condensate, and a pH measuring means for measuring a pH of the resultant condensate. It is preferred that the catalytic combustion apparatus still further comprise a temperature adjusting means for adjusting a temperature of at least a catalyst-packed portion of the reactor based on data measured by the pH measuring means.