Method for warming after-treatment burner system

A burner and combustion energy technology, which is applied to the electronic control, exhaust treatment, charging system, etc. of the exhaust gas treatment device, can solve the problems of inactivation, etc., achieve low cost, reduce power consumption, and avoid excessive energization Effect

Inactive Publication Date: 2013-05-08
HINO MOTORS LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in a vehicle with a low exhaust temperature for a long period of time, such as a bus in an urban area that travels on congested roads, it is difficult to raise the temperature of the oxidation catalyst in the front stage to a catalyst that can exert sufficient catalytic activity. Bed temperature, the oxidation reaction of the added fuel in the oxidation catalyst is not activated, so there is a problem that the particulate filter cannot be efficiently regenerated in a short time

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  • Method for warming after-treatment burner system
  • Method for warming after-treatment burner system
  • Method for warming after-treatment burner system

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Embodiment Construction

[0032] Below, refer to the attached Figure one The embodiments of the present invention will be described.

[0033] Figure 1 ~ Figure 5 Is a diagram showing the basic structure of an aftertreatment burner system to which the present invention is applied, figure 1 The reference numeral 1 in the figure represents a diesel engine equipped with a turbocharger 2, and the intake air 4 guided from the air cleaner 3 is sent to the compression of the turbocharger 2 through the intake pipe 5 The engine 2a sends the intake air 4 pressurized by the compressor 2a to an intercooler (intercooler) 6 for cooling, and then guides the intake air 4 from the intercooler 6 to an intake manifold (manifold) 7, and distributes Give each cylinder 8 of diesel engine 1 (in figure 1 Exemplified in the case of 6 cylinders in series), in addition, the exhaust gas 9 discharged from each cylinder 8 of the diesel engine 1 is sent to the turbine 2b of the turbocharger 2 via the exhaust manifold 10, and is driven...

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Abstract

A method for warming an after-treatment burner system configured in a manner such that a burner (14) is provided upstream from a particulate filter (12) (exhaust purifying material) installed in an exhaust pipe (11) and combustion by the burner (14) heats the particulate filter (12), wherein under a condition when the ambient temperature of the burner drops to or below a prescribed temperature, an electric current is transmitted, in a state of fuel supply stoppage, to an electromagnetic valve-type injector (15) for injecting fuel into the burner (14), and the transmission of the electric current to an electromagnetic coil inside the injector (15) produces Joule heat and warms the system.

Description

Technical field [0001] The invention relates to a preheating method for a post-treatment burner system. Background technique [0002] Conventionally, in diesel engines, a particulate filter (particulate filter) is installed in the middle of the exhaust pipe through which the exhaust gas flows, and the particulates (Particulate Matter) contained in the exhaust gas are processed by the particulate filter. However, under the operating state of a normal diesel engine, there is little chance of obtaining an exhaust gas temperature at which the particulates self-ignite. Therefore, the entire particulate filter is loaded with an oxidation catalyst containing Pt, Pd, etc. as active species. [0003] That is, if such a particulate filter carrying an oxidation catalyst is used, the oxidation reaction of the captured particulates is promoted, the ignition temperature is lowered, and the particulates can be burned and removed even at a lower exhaust gas temperature than before. [0004] However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20F01N3/025F01N9/00F02D41/20
CPCF01N3/027F01N2240/14F01N3/2033F02M2700/077Y02T10/26F01N3/025F01N3/0253Y02T10/12
Inventor 津曲一郎
Owner HINO MOTORS LTD
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