433 results about "Catalytic converter" patented technology

The invention relates to the technical field of automobile energy supply, in particular to a solid hydrogen storage-fuel cell integrated power assembly system based on dual-mode hydrogen supply, which comprises a hydrogen supply path identification module, a hydrogen storage unit state monitoring module, a linkage path switching module, a fuel cell load matching module and a safe hydrogen discharge regulation and control module. According to the method, the hydrogen supply pressure difference value is obtained by dynamically comparing the pressure of the cavity of the hydrogen storage tank with the pressure of the hydrogen inlet of the fuel cell, the current hydrogen supply path state can be accurately recognized in the early stage, rapid judgment of the hydrogen supply mode and accurate control of path switching are achieved, whether the risk of hydrogen supply interruption exists or not can be effectively screened, and the reliability of hydrogen supply is improved. The switching reliability of a hydrogen supply channel is improved through cross comparison of key state signals of a main channel and a standby channel, and instant response and energy consumption optimization of hydrogen discharge safety regulation and control are guaranteed through a linkage feedback mechanism between the hydrogen concentration change rate in unit time and catalytic converter control power.

The invention relates to the technical field of vehicles, and discloses a misfire diagnosis method, device and equipment for an engine of a range extender and a storage medium, and the method comprises the steps that under the catalytic converter heating working condition, if the numerical value of a current original misfire risk signal is located outside a preset numerical value interval, the torque of a generator of the range extender is adjusted, acquiring a fire risk signal after the torque is adjusted; and determining whether the engine is on fire or not according to the continuous condition of the fire risk signals with the numerical values larger than the preset signal threshold value in the preset period. Under the heating working condition of the catalyst, if the monitored value of the real-time original misfire risk signal is located outside the preset value interval, the torque of the generator of the range extender is adjusted to adjust the subsequent misfire risk signal, so that the characteristics of the misfire risk signal are enhanced, the influence of other interference signals is weakened in a disguised manner, and the safety of the engine is improved. According to the adjusted misfire risk signal, misfire diagnosis can be carried out more accurately, and the accuracy of misfire diagnosis is improved.

Method for calculating NH3 and NOx concentrations downstream from an SCR system of an internal combustion engine (E) of a vehicle by means of a statistical module, the method comprising the following steps: using temperature measurements acquired upstream (T1) and downstream (T2) of the Selective Reduction Catalyst (SCR) as first input variables and NOx mass flow measurements acquired upstream (N1) and downstream (N2) of the SCR as second input variables; calculating an NH3 concentration downstream from the SCR catalytic converter as a function of the first and second inputs.

An exhaust control system for a vehicle includes a temperature sensor located downstream of the exhaust combustor and upstream of the SCR catalytic converter in the exhaust system. The temperature sensor is configured to generate a measurement signal indicating the temperature of the exhaust gas flowing through the exhaust system at the outlet of a DPF located downstream of the exhaust combustor. An exhaust control module is configured to: activate the exhaust combustor to heat the exhaust gas; monitor the temperature of the exhaust gas based on the measurement signal; subsequently activate the exhaust combustor and then deactivate it based on an upper threshold temperature of the exhaust gas; and subsequently deactivate the exhaust combustor and then activate it based on a lower threshold temperature of the exhaust gas. The lower threshold temperature is lower than the upper threshold temperature.

Provided herein are methods and systems for treating a sulfur dioxide-containing gaseous stream. The method includes combusting a tail gas in an excess of oxygen gas to yield a thermal oxidizer effluent containing sulfur dioxide and oxygen. The thermal oxidizer effluent is introduced to an oxidative catalytic converter to convert sulfur dioxide to sulfur trioxide, thereby forming an oxidized gas stream. The oxidized gas stream is routed to a quench tower and contacted with a dilute aqueous acid quench stream to yield sulfurous acid, hydrated sulfur dioxide, or both. The sulfurous acid or hydrated sulfur dioxide is oxidized with the excess of oxygen from the thermal oxidizer effluent to yield sulfuric acid.

An oven appliance includes a housing defining a discharge vent, a cooking chamber positioned within the housing, an exhaust duct providing fluid communication between the cooking chamber and the discharge vent, an air handler operably coupled with the exhaust duct for urging a flow of heated air from the cooking chamber, through the exhaust duct, and out of the discharge vent, and a catalytic converter assembly. The catalytic converter assembly includes a catalytic element positioned within the exhaust duct for lowering volatile organic compounds from the flow of heated air and a catalyst heater positioned upstream of the catalytic element for selectively heating the flow of heated air.

The invention discloses a sintering machine flue gas purification treatment process which comprises a heating assembly, a catalyst connected to an outlet of the heating assembly and a heat recovery assembly connected to an outlet of the catalyst, and further comprises an amine spraying assembly installed on one side of the heat recovery assembly, and a waste gas inlet of the amine spraying assembly is connected with a waste gas outlet of the heat recovery assembly; the amine spraying assembly comprises a shell, an amine storage tank is placed on one side of the shell, a pressurizing structure is installed on the outer wall, close to the amine storage tank, of the shell, and a liquid suction opening of the pressurizing structure is connected with the amine storage tank; the denitration assembly is mounted on one side of the amine spraying assembly, and a waste gas inlet of the denitration assembly is communicated with a waste gas outlet of the amine spraying assembly. Carbon monoxide in flue gas generated by sintering can be effectively catalytically oxidized into carbon dioxide through the catalytic converter, meanwhile, a large amount of heat energy can be generated, by-product steam can be generated through the additionally-arranged steam furnace and can be directly utilized, and high economic benefits are achieved.

The invention relates to the technical field of three-way catalytic detection, and discloses three-way catalytic converter cold and hot impact resistance detection equipment which comprises a workbench and a CCD camera. An engine exhaust simulation system and a waste gas recovery system which are connected with a three-way catalytic converter are installed on the workbench; and the cold air cooling system is used for rapidly cooling the three-way catalyst. The exhaust gas recovery device is provided with an exhaust gas recovery structure composed of the mounting cover, the force storage piston, the air exhaust piston and the like, residual exhaust gas in the three-way catalyst can be comprehensively purged and recovered under the driving of the driving motor after detection is finished, environmental pollution caused by direct exhaust gas emission is effectively avoided, the environmental protection requirement is strictly met, and meanwhile, the detection efficiency is improved. And the structural design of the equipment is extremely synergetic, a guide block on the rotating disc is matched with an ejector block to push a force storage piston, an air exhaust piston and a push rod to be linked in order, so that the operations of inflating, exhausting, waste gas recycling and jacking part taking are carried out continuously, the energy consumption of the equipment is reduced, and the high efficiency of operation is improved.

The invention discloses a welding tool for production of catalytic converter matched parts, and relates to the technical field of catalytic converter welding, the welding tool comprises a power distribution cabinet, a catalytic converter shell and a pipeline, and the upper end of the power distribution cabinet is fixedly connected with a machining table; and the welding mechanism comprises an annular frame fixedly connected to the upper end of the machining table through a support, an annular T-shaped groove is formed in the upper end of the annular frame, a plurality of T-shaped rods are slidably connected to the inner wall of the annular T-shaped groove, a gear ring is jointly and fixedly connected to the upper ends of the T-shaped rods, and a fixing seat is fixedly connected to the inner wall of the gear ring. When pipelines with different pipe diameters are welded, the system can automatically compensate diameter changes, so that the distance between a laser welding head and the surface of a workpiece, namely the defocusing amount, is kept constant, the link that manual repeated adjustment is needed due to workpiece specification changes is eliminated, the production efficiency is greatly improved, the stability of welding process parameters is guaranteed, and the production cost is reduced. And the consistency and the reliability of the welding seam quality are guaranteed from the source.

Deterioration diagnostic device for an exhaust gas control catalyst, wherein the deterioration diagnostic device is configured to diagnose deterioration of the exhaust gas control catalyst which is provided in an exhaust port of an internal combustion engine and is configured to store oxygen, and wherein the deterioration diagnostic device comprises: a downstream air-fuel ratio sensor (43) configured to detect an air-fuel ratio of an exhaust gas that has flowed out of the exhaust control catalyst; and a control device (31) configured to control an air-fuel ratio of an exhaust gas flowing into the exhaust control catalyst and to diagnose deterioration of the exhaust control catalyst based on an output from the downstream air-fuel ratio sensor (43), wherein the control device (31) is configured in a deterioration diagnostic process to diagnose deterioration of the exhaust control catalyst to alternately and repeatedly perform a rich process and a lean process, wherein the rich process is a process in which the air-fuel ratio of the exhaust gas flowing into the exhaust control catalyst is controlled to a rich air-fuel ratio that is richer than a stoichiometric air-fuel ratio, and wherein the lean process is a process in which the air-fuel ratio of the exhaust gas flowing into the exhaust control catalyst is controlled to a lean air-fuel ratio that is leaner than the stoichiometric air-fuel ratio. to switch from the rich process to the lean process when the amount of oxygen released by the exhaust gas control catalyst since the start of the rich process equals the first amount of oxygen, and to switch from the lean process to the rich process when the amount of oxygen stored in the exhaust gas control catalyst since the start of the lean process equals the second amount of oxygen, which is lower than the first amount of oxygen, and to determine that the exhaust gas control catalyst has deteriorated when the lean process is carried out and a frequency at which an output air-fuel ratio of the downstream air-fuel ratio sensor (43) is equal to the lean air-fuel ratio is equal to or greater than a predetermined frequency.

This invention relates to the field of engine exhaust gas recirculation (EGR) technology, and discloses a heating and vaporization device and method for engine EGR condensate. The device includes a compressor with an inlet and an outlet on its outer side. An intercooler is fixedly connected to the outlet end away from the compressor. A pipe assembly is located in the middle of the intercooler, and an engine cylinder, a turbine, and a three-way catalytic converter are connected in series via the pipe assembly. An exhaust port is located on the outer side of the three-way catalytic converter. This invention heats the liquid water that precipitates and flows into the intercooler, causing it to undergo a complete phase change and convert into water vapor. The water vapor then enters the engine cylinder along with the gas mixture, blocking the path of liquid water intruding into the engine cylinder, avoiding the risk of misfire caused by liquid water, and improving the mechanical stability of engine operation.

To make three of generation of negative pressure for a brake booster, ignition timing retard for warming up a catalyst, and securing of torque for maintaining idle operation coexist to the maximum.SOLUTION: An engine required torque to be generated for maintaining an idle operation is calculated (S1), a net target air amount required for the engine required torque is calculated when an ignition timing is MBT (S2), a required ignition timing retard amount required for warming up a three way catalytic converter is determined (S3), a retard target air amount required for realizing the engine required torque under an ignition timing according to the required ignition timing retard amount is calculated (S4, S5), and an upper limit differential pressure securing target air amount required for securing a negative pressure is calculated (S6). The retard target air amount and the differential pressure securing target air amount are compared with each other (S7), and when the retard target air amount is equal to or less than the differential pressure securing target air amount, the throttle valve is controlled according to the retard target air amount, and the ignition timing retard according to the required ignition timing retard amount is performed (S8 to 10).SELECTED DRAWING: Figure 2

The invention relates to a method for judging whether SCR (Selective Catalytic Reduction) aftertreatment of a road diesel vehicle is normal or not. When the working condition of the diesel engine is dynamically changed, the change rule of the O2 and CO2 concentration at the SCR inlet and the NOX concentration along with time has similarity; after exhaust gas enters a normally-working SCR catalytic box, NOX is reduced and changes, O2 and CO2 are not changed, and the similarity of the change rule of the NOX concentration of an SCR outlet and the O2 and CO2 concentrations along with time is damaged. According to the method, whether the SCR works normally or not is comprehensively judged according to the concentration EO2 (t) of O2 and CO2 at an SCR aftertreatment outlet and the correlation coefficient of the ECO2 (t) and the NOX concentration ENOx (t). The dynamic working condition comprises the steps of idling of the diesel vehicle, rapid acceleration, maintaining of the maximum rotating speed and idling returning; measuring the concentration of O2 and CO2 and the concentration of NOX at a post-treatment outlet of the SCR, calculating a correlation coefficient, and comprehensively comparing and judging the working state of the SCR. According to the method, the problems that whether the SCR works normally or not is difficult to judge and misjudgment is easy due to the fact that NOX data at the SCR aftertreatment inlet of the diesel engine are difficult to obtain are solved.

This disclosure relates to an engine assembly and a vehicle, belonging to the field of vehicle technology. The engine assembly includes a cylinder head, a cylinder block, and a three-way catalytic converter. The cylinder block and cylinder head are connected. The outer wall of the cylinder block has a drive shaft support. The three-way catalytic converter includes a first housing, a second housing, and a catalytic element. The first housing has a tubular structure and includes a straight pipe section and a curved pipe section that are connected to each other. The straight pipe section is connected to the cylinder head. The second housing is located above the drive shaft support. The second housing has a tubular structure and is connected to the curved pipe section. The catalytic element is located within the tubular structure of the second housing and is connected to the second housing. The curved pipe section allows the entire three-way catalytic converter to be located above the drive shaft support. This eliminates the need to consider the second housing's clearance from the drive shaft support and the drive shaft, allowing the three-way catalytic converter to remain close to the engine sidewall, thereby reducing wasted interior space in the vehicle.

The utility model discloses an efficient controllable fuel oil catalytic converter structure for a fuel oil system, which relates to the technical field of fuel oil catalytic converters and comprises an oil inlet pipe, one side of the oil inlet pipe is fixedly connected with an oil outlet pipe, one side of the oil outlet pipe is fixedly connected with a fixing frame, and the upper surface of the oil inlet pipe is communicated with a catalytic body. The arc surface of the catalytic body is communicated with a reactor, the lower surface of the reactor is communicated with an oil outlet pipe, the upper surface of an oil inlet pipe is fixedly connected with a connecting plate, a driving rod penetrates through the upper surface of the connecting plate in a threaded mode, and the lower end of the driving rod is rotationally connected with an inclined block; an inserting plate is fixedly connected to the position, relative to the lower portion of the connecting plate, of one side of the oil inlet pipe, and according to the efficient controllable fuel oil catalytic converter structure for the fuel oil system, the effect of improving the catalytic fuel oil quality of a controllable fuel oil catalytic converter of the fuel oil system is achieved; the problems that small particles in fuel enter a structure fine catalytic body, blockage is caused, uniform catalysis is difficult, and the fuel catalytic quality is reduced are solved.

The invention discloses a supported catalyst based on carrier modification and a preparation method and application thereof, and relates to the technical field of supported catalysts, the supported catalyst comprises an inert ceramic material and catalyst powder coating the inert ceramic material, and the catalyst powder comprises a modified carrier and an active component supported on the modified carrier; the modified carrier comprises a carrier material and a modifier, the carrier is one or more of pure aluminum oxide or an aluminum-based composite material, and the modifier is a mixture of an M source and a P source; the modified carrier is prepared by carrying out surface modification on a carrier through a mixture formed by an M source and a P source, and the modified carrier is an M3 (PO4) delta carrier or an M3 (PO4) delta carrier; the active component includes noble metal particles dispersed in a modified carrier material. The catalyst can be directly applied to three-way catalysis of a motor vehicle, and the catalyst prepared by adopting the method disclosed by the invention can be used for effectively improving the ignition performance and the durability by taking a natural gas vehicle equivalence ratio combustion reaction as an application case.

The present invention provides a catalytic converter capable of effectively utilizing the amount of noble metal used in a catalyst and improving the effect of reducing emissions. A catalytic converter (1) is provided with an electrically heated catalyst (2) disposed on the upstream side in the flow direction of exhaust gas, and a non-electrically heated catalyst (3) disposed on the downstream side with respect to the electrically heated catalyst (2). The electrically heated catalyst (2) has, as a catalyst coating layer, only an Rh catalyst coating layer (22) formed on the upstream-side substrate (21). The non-electrically heated catalyst (3) has, as catalyst coating layers, a second Pd catalyst coating layer (322) and an Rh catalyst coating layer (33) that are formed over the entire length of the downstream base material (31), and first and third Pd catalyst coating layers (321, 323) that are disposed in a range of 35% or less from the upstream end surface (31a) of the non-electrically heated catalyst (3) in the flow direction of the exhaust gas. The content of the Pd catalyst in the second Pd catalyst coating layer 322 is less than the content of the Pd catalyst in the first and third Pd catalyst coating layers 321, 323.

The embodiment of the invention provides a catalyst temperature rise protection method and device, a vehicle and a storage medium, and the method comprises the steps that when the opening degree of an accelerator pedal is 0% and the center temperature of a catalyst is larger than a first temperature threshold value, the ignition angle of an engine is controlled to be kept at a preset ignition angle; and when the center temperature of the catalytic converter is smaller than a second temperature threshold value, the engine is controlled to stop injecting fuel oil. When a driver loosens an accelerator and the center temperature of a catalytic converter is high, fuel cut-off of the engine is delayed, the ignition angle is properly increased, combustion occurs in the engine as much as possible, and the combustion tendency after combustion is reduced. Meanwhile, oxygen in exhausted gas is consumed, and oxidation heat release of hydrocarbon at high temperature is prevented. At the moment, the exhaust temperature is low, the center temperature of the catalytic converter can be reduced, and fuel injection is stopped after the center temperature of the catalytic converter is reduced. And the fuel economy is ensured while the high-temperature damage to the catalytic converter is reduced.

This invention provides a catalytic converter that can stably improve the purification rate of a three-way catalytic converter. [Solution] The catalytic converter 2 comprises a three-way catalytic converter 5 for purifying engine exhaust gas, a baffle plate 6 having a plurality of holes through which exhaust gas passes, and a case 3 that houses the three-way catalytic converter 5 and the baffle plate 6. The case 3 has an inlet 31 for introducing exhaust gas discharged from the engine, an expanding 32 for expanding the flow path cross-sectional area of ​​the exhaust gas that has entered from the inlet 31, a housing 33 for housing the three-way catalytic converter 5, a contracting 34 for reducing the flow path cross-sectional area of ​​the exhaust gas that has passed through the three-way catalytic converter 5, and an outlet 35 for releasing the exhaust gas that has passed through the contracting 34. The outlet 35 has a mounting portion 351 to which an oxygen sensor 4 for detecting the oxygen concentration contained in the exhaust gas flowing through the outlet 35 is attached. The baffle plate 6 is provided inside the case 3 between the three-way catalytic converter 5 and the mounting portion 351.

A system for reducing the release of hydrocarbons intermittently or continuously emitted from a hydrocarbon source into the atmosphere includes a hydrocarbon supply conduit configured to receive the emitted hydrocarbons from the hydrocarbon source. In addition, the system includes an air supply conduit configured to receive air from an air source. Further, the system includes an aspirator fluidly coupled to the air supply conduit and the hydrocarbon supply conduit. The aspirator is configured to (i) receive air from the air supply conduit, (ii) receive the emitted hydrocarbons from the hydrocarbon supply conduit, and (iii) mix the air with the emitted hydrocarbons to form an air-hydrocarbon mixed stream. Still further, the system includes a mixing tee fluidly coupled to the air supply conduit, the hydrogen supply conduit, and the aspirator. The mixing tee is configured to (i) receive the air-hydrocarbon mixed stream from the aspirator, (ii) receive supplemental air from the air supply conduit, and (iii) mix the supplemental air and the air-hydrocarbon mixed stream to form an air-entrained hydrocarbon stream. The system also includes an air-entrained hydrocarbon conduit fluidly coupled to the mixing tee. Moreover, the system includes a catalytic converter fluidly coupled to the air-entrained hydrocarbon conduit and configured to receive the air-entrained hydrocarbon stream, and wherein the catalytic converter includes a catalyst configured to catalytically combust and oxidize the emitted hydrocarbons in the air-entrained hydrocarbon stream.

This application relates to an aftertreatment temperature control method, system, and vehicle. The aftertreatment temperature control method includes: determining the ammonia storage capacity of the catalytic converter and the particulate matter capture mass of the particulate matter trap; determining the aftertreatment inlet temperature of the aftertreatment equipment; determining the aftertreatment target temperature based on the aftertreatment inlet temperature, the ammonia storage capacity, and the particulate matter capture mass; and adjusting the aftertreatment temperature of the engine aftertreatment equipment based on the aftertreatment inlet temperature and the aftertreatment target temperature. This application comprehensively considers the aftertreatment inlet temperature, the ammonia storage capacity of the catalytic converter, and the particulate matter capture mass of the particulate matter trap to adjust the aftertreatment temperature of the aftertreatment equipment, achieving multi-factor coordinated control of the aftertreatment temperature, which is beneficial to improving aftertreatment capacity and reducing nitrogen oxide and particulate matter emissions.

An engine data processor for an internal combustion engine is structured and arranged for: receiving a geometric characteristic of an exhaust unit through which the exhaust gas composition can be discharged, and determining from the geometric characteristic a smoke visibility limit value; receiving filter fill status information from an exhaust gas filter for filtering the exhaust gas composition; receiving a mean catalytic converter temperature of an exhaust gas catalytic converter for catalyzing the exhaust gas composition and determining a nitrogen dioxide conversion rate subject to the filter fill status information which has been received and the mean catalytic converter temperature; comparing the calculated nitrogen dioxide conversion rate with the smoke visibility limit value, and determining therefrom a control variable for the internal combustion engine so that the exhaust gas composition is invisible; and issuing the control variable.

A method comprising: generating NO2 in a catalyst (70) comprising a washcoat with zirconium, one or more base metal oxides and a palladium oxide, wherein an exhaust gas flow rate is between the lower and upper threshold flow rates; and facilitating regeneration of a particulate filter (72) located downstream of the catalyst (70) via NO2 when an exhaust gas temperature is greater than a threshold temperature; wherein the palladium oxide is contained in an upstream section (70A) of the catalyst (70) in relation to a direction of the exhaust gas flow; and the at least one base metal oxide is contained in a downstream section (70B) of the catalyst (70) in relation to the direction of the exhaust gas flow.

The invention relates to an internal combustion engine having a plurality of cylinders forming at least one cylinder group, an emission control device comprising a plurality of emission control elements having at least one catalytic converter element arranged in a jacket, the wall thickness of which is designed for an exhaust gas pressure of at most 10 bar, and an exhaust gas turbocharger, the exhaust control device includes an exhaust manifold, an exhaust feed pipe, and an exhaust discharge pipe, and exhaust gas may be guided such that exhaust gas emitted from the cylinder may be fed to the exhaust manifold. In a first switching state of the switching unit, exhaust gas emitted from the exhaust manifold can be guided into the exhaust gas feed pipe, in the direction of the emission control element, into the exhaust gas discharge pipe, in the direction of the exhaust gas turbocharger, and into the exhaust gas discharge pipe, in the direction of the exhaust gas turbocharger. In the second switching state, exhaust gas emanating from the exhaust manifold bypassing the emission control element is conducted directly in the direction of the exhaust gas turbocharger, and the tube comprises a plurality of tube sections in which compensators are arranged, which interact with the emission control element.

When a manifold catalytic converter, which is a catalyst above an exhaust passage, is warmed, a control unit is configured to control the energization of an electric heater of the manifold catalytic converter, and / or the driving of an internal combustion engine in accordance with a battery SOC of a battery. This makes it possible in a hybrid vehicle to warm the manifold catalytic converter using an amount of electric power consumed by motoring of an electric motor, and generally to shorten a time taken to drive the internal combustion engine for catalyst warming.

A novel engine general arrangement structure belongs to the technical field of engine general arrangement for engine production and is characterized in that a valve chamber housing assembly is connected to the upper right portion of an efficient supercharged engine body through bolts, and a supercharger air inlet pipe is arranged on the valve chamber housing assembly; the turbocharger assembly and the ternary and catalytic converter assembly are arranged on the exhaust side of the efficient supercharged engine body, the water pump and adapter assembly is arranged below the turbocharger assembly, the intake manifold assembly and the intercooler assembly are arranged on the upper half portion of the intake side of the efficient supercharged engine body, and the intercooler assembly is arranged above the intake manifold assembly. A throttle body is connected between the air inlet manifold assembly and the intercooler assembly, space is effectively saved for arrangement of a generator, the front end of the efficient supercharged engine body is provided with a supercharger air outlet pipeline, and the arrangement requirement of a compact type vertical cabin can be met.

An exhaust gas purification device for measuring air / fuel ratio accurately and for enhancing a purification performance without increasing a size of a catalyst. The exhaust gas purification device comprises: header pipes through which exhaust gas flows; a catalytic converter arranged downstream of the header pipes; a diffusion chamber arranged between the header pipe and the catalytic converter; and a receiving surface with which the exhaust gas flowing into the diffusion chamber collides. An orifice is formed in a downstream end plate of the diffusion chamber, and an air / fuel ratio sensor is arranged downstream of the orifice.

The utility model provides a natural gas Europe 7 catalytic converter and catalytic silencer post-processing assembly and a preceding-stage tight coupling catalytic converter. The natural gas Europe 7 catalytic converter and catalytic silencer post-processing assembly comprises a gas inlet flange connected with a supercharger, a gas inlet connecting pipe, a preceding-stage GOC unit packaging small assembly and a preceding-stage gas outlet flange connected with an exhaust pipe, meanwhile, the preceding-stage tight coupling catalytic converter is connected with the engine body through a connecting bracket; the post-stage linear catalytic silencer post-treatment assembly comprises a post-stage GOC small assembly, a post-stage particle trapping assembly, a post-stage mixer assembly and a post-stage selective catalytic reduction assembly which are connected in sequence, and the post-stage GOC small assembly is connected with an exhaust pipe; an electromagnetic nozzle is assembled on the rear-stage mixer assembly; and a front temperature sensor, a rear temperature sensor, a nitrogen-oxygen sensor and a differential pressure sensor are mounted on the rear-stage selective catalytic reduction assembly. The utility model provides a postprocessor assembly which can be used for efficiently treating tail gas at low cost and has the function of intercepting particulate matters in the tail gas.

To promote heat radiation of a cable for supplying electric power to an electric heating type catalyst device.SOLUTION: The vehicle includes the engine 20 located in the engine room 110, the EHC50 that defines the flow passage of the exhaust gas together with the exhaust gas pipe 40 in the engine room 110 and supports the catalytic converter on the catalytic converter support that generates heat by being energized, and the third EHC50 cable 82 that connects the power supply device 70 for supplying power to the EHC50 and the 2EHC, and at least a part of the third 2EHC cable 82 is located on the upward direction side with respect to the 28A of the upper end surface of the head cover 28 of the engine 20.SELECTED DRAWING: Figure 1