Diesel engine exhaust emission purifying system

A diesel engine and exhaust gas emission technology, which is applied to engine components, machines/engines, exhaust devices, etc., can solve problems such as high hazards and increased particulate matter

Inactive Publication Date: 2008-05-14
YANTAI HUALONG BUSINESS MACHINE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After adopting modern diesel engine technology, especially diesel high-pressure injection technology, although the total mass of particulate m

Method used

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  • Diesel engine exhaust emission purifying system
  • Diesel engine exhaust emission purifying system
  • Diesel engine exhaust emission purifying system

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] like figure 1 Shown: the diesel vehicle exhaust emission purification device of the present invention includes the following parts: the diesel vehicle particle filter DPF (20) is a wall-flow filter body, which can be made of materials such as cordierite or silicon carbide. The filtration efficiency of particulate matter exceeds 95%. The exhaust gas discharged from the diesel engine enters the purification device from the air inlet (21), is filtered by the diesel vehicle particle filter DPF (20), and is discharged from the outlet (22). The pressure sensor (16) installed in the engine exhaust port (21) will continuously transmit the exhaust back pressure signal to the electronic control unit ECU (23). To a certain extent, when the signal sent by the pressure sensor (16) to the electronic control unit ECU (23) is higher than the set value, the electroni...

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Abstract

The invention discloses a purification system of vent gas of diesel engine. The purification system of vent gas of diesel engine essentially consists of a wall-flow diesel particle filter (DPF) and a heating regeneration device used for regeneration of the wall-flow diesel particle filter (DPF). The heating regeneration device consists of an electronic control unit (ECU), a combustion chamber and an ignition system. The ignition system comprises a spark plug, a high voltage wire and an ignition coil, a combustion air generating device and relevant pipes, ejector components and pipes, an oil nozzle, relevant temperature and pressure sensor and other gas paths, a valve of oil circuit and an automatic protection device. Compared with the prior art, the invention is characterized by reliable regeneration, efficient purification and no restriction of the way vehicle driving, etc.

Description

Technical field: [0001] The invention relates to a diesel engine exhaust gas purification system, in particular to a diesel engine exhaust gas emission purification system with a special automatic regeneration function. Background technique: [0002] Because of its good power, low fuel consumption and good reliability, diesel engines have been more and more widely used in modern society where energy is increasingly tight. Compared with gasoline engines, the emissions of harmful gases HC and CO produced by diesel engines are quite low. Generally, it is only a few tenths of the gasoline engine, and the NOx emission is in the same order of magnitude as the gasoline engine, but the particulate emission of the diesel engine is about 30 to 70 times that of the gasoline engine. Therefore, particulate emission is one of the important factors restricting the development of diesel engines. After adopting modern diesel engine technology, especially diesel high-pressure injection tech...

Claims

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Application Information

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IPC IPC(8): F01N3/025
Inventor 齐芳
Owner YANTAI HUALONG BUSINESS MACHINE
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