摘要:
An exhaust gas treatment system for an internal combustion engine (1) reduces the amount of NOx in exhaust gas flowing through an exhaust passage (6) of the engine (1). The system has a plasma generator (12) including two electrodes (13, 14) spaced away from each other in the exhaust passage (6), a high-frequency power supply (16) connected to one of the electrodes (13), and a NOx absorber (15) provided between the electrodes (13, 14).
摘要:
An exhaust gas treatment system for an internal combustion engine includes an exhaust pipe (6) and an energy applying device (12). Exhaust gas discharged from the internal combustion engine flows into the exhaust pipe (6). The energy applying device (12) applies energy to the exhaust gas flowing through the exhaust pipe. The energy applied to the exhaust gas is greater than the energy for decomposing nitrogen monoxide (NO) and less than the energy for decomposing nitrogen (N 2 ).
摘要:
An exhaust gas purifying system includes an exhaust passage (2), an oxidation catalyst (3), a selective catalytic reduction catalyst (5), a urea water supply device (7), a first heating mechanism (8) and a controller (10). The exhaust gas discharged from an internal combustion engine (1) flows through the exhaust passage (2). The oxidation catalyst (3) for oxidizing nitrogen monoxide contained in the exhaust gas to nitrogen dioxide is disposed in the exhaust passage (2). The selective catalytic reduction catalyst (5) is disposed downstream of the oxidation catalyst (3). The urea water supply device (7) supplies urea water into the exhaust passage (2) at the upstream of the selective catalytic reduction catalyst (5). The first heating mechanism (8) heats the oxidation catalyst (3). The controller (10) controls the first heating mechanism (8) to adjust the temperature of the oxidation catalyst (3) such that molar ratio between nitrogen monoxide and nitrogen dioxide in the exhaust gas flowing into the selective catalytic reduction catalyst (5) become one to one.
摘要:
A method is provided for separating gas including diamagnetic materials and paramagnetic materials containing nitrogen oxides and oxygen into diamagnetic materials, nitrogen oxides, and oxygen. The method includes steps of providing a magnetic device (11) along a gas passage (6), and providing a plurality of flow passages (9a-9f). Each flow passage (9a-9f) has one end that is separately connected to the gas passage (6). The flow passages (9a-9f) extend in a direction that a force due to a magnetic field of the magnetic device (11) is applied to the paramagnetic materials in the gas. The method further includes a step of allowing the gas to flow into the flow passages (9a-9f) so that nitrogen oxides and oxygen in the gas enter into a corresponding flow passage (9a-9f) among the plurality of the flow passages.
摘要:
An exhaust gas purification apparatus includes a catalyst carrier which has a body and a catalyst supported on the body, and an electrically conducting device for conducting an electric current to the body. A part of the body is at least made of a conductive nonmetal.