A work vehicle according is provided with an engine, a variable displacement hydraulic pump, a hydraulic motor, a traveling apparatus, an exhaust treatment device, a reductant supply route, a controller, and an operation member. The variable displacement hydraulic pump is configured to discharge…
An engine system includes: an exhaust path through which an exhaust gas of an engine passes; an urea injection valve that injects urea into the exhaust path; a catalyst that is provided in the exhaust path on a downstream of the urea injection valve, and that selectively reduces NOx by using…
A post-processing system apparatus and a control method according to the present disclosure include: an exhaust pipe which has one end that is connected with an engine so as to allow exhaust gas to flow thereinto, and the other end that is opened to discharge the exhaust gas; a DOC which primarily…
[OBJECT] To provide an exhaust gas emission purifying device in a more compact size, and to prevent a decrease in catalytic performance due to the adsorption of intermediates such as ammonium sulfate even if the fuel contains a large quantity of sulfur compounds. [MEANS] An exhaust gas emission…
An exhaust gas purification device includes an oxidation catalyst for oxidizing and purifying particulate matter contained in exhaust gas from an internal combustion engine, wherein the oxidation catalyst is provided with a support constituted by at least one metal salt selected from a group…
Provided is a marine vessel denitration system capable of supplying electric power to an ammonia producing device that produces ammonia for use in denitration, while keeping energy consumption low. The system includes an ammonia producing device (2) supplied with electric power from a marine vessel…
With the invention, electrical energy required when producing ammonia for use as a reducing agent in denitration is supplied with low energy consumption. Provided are an ammonia producing device (2) that includes a hydrogen producing unit (81) for producing hydrogen from water and a nitrogen…
An exhaust purification system of an internal combustion engine is provided with an exhaust purification catalyst where NO x which is contained in exhaust gas and modified hydrocarbons react. The exhaust purification catalyst carries precious metal catalysts and is formed with a basic exhaust gas…
An exhaust gas denitration system is provided to prevent clogging of a urea water injection nozzle and an exhaust tube and avoid poisoning of an exhaust gas denitration catalyst. The exhaust gas denitration system includes: an exhaust gas turbocharger (5) driven by exhaust gas from a marine diesel…
Exhaust gas is subjected to an exhaust gas purification device having an exhaust gas purification unit, and exhaust gas is desulfurized at predetermined times using an oxidation catalyst. A specified amount of carbon monoxide is added to the exhaust stream containing nitrogen oxide discharged from…
An internal combustion engine in an engine exhaust passage of which a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. If the hydrocarbon feed valve (15) feeds hydrocarbons by a period of within 5 seconds, a reducing intermediate is produced inside the exhaust…
A fuel tank (12) is constructed such that a front flange portion (14A1) of a top surface plate (14A) of a second plate (14) extends furthermore to an outside in relation to a front surface plate (13B) of a first plate (13). As a result, a front surplus space portion (15A) projected in the upper and…
Inside an engine exhaust passage, in order from the upstream side, a hydrocarbon feed valve (16), oxidation catalyst (13), and exhaust purification catalyst (14) are arranged. A first NO X purification method which lowers the air-fuel ratio of the exhaust gas flowing into the exhaust purification…
It is an object of the present invention of this application to provide an engine device in which a DPF 1 is disposed, with high rigidity, in an engine 70 as one constituent part of the engine 70, the need of countermeasures against exhaust gas for each of devices of a vehicle is eliminated, and…
The present invention provides a process and a device for regeneration of a nitrogen oxides storage catalyst arranged in the exhaust system of a diesel engine. The process comprises a first and a second regeneration strategy wherein the first regeneration strategy is applied when the exhaust gas…
An NOx catalyst 17 for selectively reducing NOx in exhaust gas by adsorbing ammonia is provided at an exhaust system of an engine 1, ammonia or urea water is supplied to the NOx catalyst by reducing agent supplying means 29, a consumption amount of ammonia adsorbed to the NOx catalyst is derived by…
Carbon-containing suspended particulates in exhaust gas from an internal combustion engine (10) are collected by a heat-resistant filter (100), and are burned on the filter. It is determined whether there is a need to increase the temperature of the heat-resistant filter (100). If it is necessary…
An emission control system for an internal combustion engine (1) is provided with a catalyst (4) disposed in an exhaust passage (3) of the internal combustion engine (1) for purifying an exhaust gas that enters the catalyst (4); engine operating state detecting means (15) for detecting an engine…