An engine exhaust gas dust-removal system and method. The engine exhaust gas dust-removal system comprises an exhaust gas dust-removal system inlet, an exhaust gas dust-removal system outlet, and an exhaust gas electric field device. The engine exhaust gas dust-removal system has a better dust-removal effect, and can effectively remove particulate matters in engine exhaust gas.

An engine exhaust gas dust-removal system and method. The engine exhaust gas dust-removal system comprises an exhaust gas dust-removal system inlet, an exhaust gas dust-removal system outlet, and an exhaust gas electric field device. The engine exhaust gas dust-removal system has a better dust-removal effect, and can effectively remove particulate matters in engine exhaust gas.

An exhaust gas ozone purification method, specifically comprising: enabling a mixing reaction between an ozone stream and an exhaust gas stream, and removing nitric acid from mixed reaction products between the ozone stream and the exhaust gas stream by using an electrocoagulation device. The electrocoagulation device comprises: a first electrode (301) electrifying water spray of nitric acid; and a second electrode (302) applying an attraction force to the electrified water spray. The method can realize the purification of exhaust gas.

A system and method for removing dust from exhaust gas of an engine. The system for removing dust from exhaust gas of an engine comprises an exhaust gas dust-removing system inlet, an exhaust gas dust-removing system outlet and an exhaust gas electric field apparatus (1021). The system for removing dust from exhaust gas of an engine has the advantageous effect of dust removal and can effectively remove particulates in exhaust gas of an engine.

A system and method for removing dust from exhaust gas of an engine. The system for removing dust from exhaust gas of an engine comprises an exhaust gas dust-removing system inlet, an exhaust gas dust-removing system outlet and an exhaust gas electric field apparatus (1021). The system for removing dust from exhaust gas of an engine has the advantageous effect of dust removal and can effectively remove particulates in exhaust gas of an engine.

A system for removing dust from exhaust gas of an engine, comprising an exhaust gas electric field apparatus and an oxygen replenishment apparatus. The exhaust gas electric field apparatus comprises an exhaust gas electric field apparatus inlet, an exhaust gas electric field apparatus outlet, an exhaust gas dust-removing electric field cathode and an exhaust gas dust-removing electric field anode. The exhaust gas dust-removing electric field cathode and the exhaust gas dust-removing electric field anode are used to generate an ionizing electric field for removing dust from exhaust gas. The oxygen replenishment apparatus is used to add an oxygen-containing gas to the exhaust gas before applying an ionizing electric field for dust removal thereto. The system for removing dust from exhaust gas of an engine has the advantageous effect of dust removal and can effectively remove particulates in exhaust gas of an engine.

A system for removing dust from exhaust gas of an engine, comprising an exhaust gas electric field apparatus and an oxygen replenishment apparatus. The exhaust gas electric field apparatus comprises an exhaust gas electric field apparatus inlet, an exhaust gas electric field apparatus outlet, an exhaust gas dust-removing electric field cathode and an exhaust gas dust-removing electric field anode. The exhaust gas dust-removing electric field cathode and the exhaust gas dust-removing electric field anode are used to generate an ionizing electric field for removing dust from exhaust gas. The oxygen replenishment apparatus is used to add an oxygen-containing gas to the exhaust gas before applying an ionizing electric field for dust removal thereto. The system for removing dust from exhaust gas of an engine has the advantageous effect of dust removal and can effectively remove particulates in exhaust gas of an engine.

A disclosed system for reducing particulate matter in an exhaust gas includes: a first conductor provided in the form of a tubular body through which a gas stream flows, and to which a ground power supply is connected; a second conductor disposed within the first conductor and having an emitter which comes into contact with the gas stream and generates non-thermal plasma (NTP); and an insulator for electrically separating the second conductor from the first conductor, in which a predetermined level of direct current voltage is continuously applied to the second conductor.

A disclosed system for reducing particulate matter in an exhaust gas includes: a first conductor provided in the form of a tubular body through which a gas stream flows, and to which a ground power supply is connected; a second conductor disposed within the first conductor and having an emitter which comes into contact with the gas stream and generates non-thermal plasma (NTP); and an insulator for electrically separating the second conductor from the first conductor, in which a predetermined level of direct current voltage is continuously applied to the second conductor.

The invention relates to an air cleaner for a vehicle which can be installed on the rear of the vehicle, which includes a suction pipe provided with a slit having a length corresponding to a width of the vehicle, an air pump connected to inside of the suction pipe by a guide pipe, and a filter means connected to the air pump. The air cleaner is operated in a way of sucking exhaust gas and fine dust generated from an exhaust line of the vehicle together with fine dust and dust particles generated around tires of the vehicle during driving of the vehicle, removing them, and then discharging purified air to the atmosphere. The air cleaner can effectively remove the fine dust and various-shaped dust particles directly and indirectly generated from the vehicle, and remarkably reduce generation of fine dust by considerably suppressing diffusion of fine dust into atmosphere.