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Diagnostic method and device for particulate matter discharging for novel external automotive diesel engine

A diagnosis method and a technology of a diagnosis device, which are applied in the direction of a diagnosis device of an exhaust treatment device, an electric control of an exhaust treatment device, and exhaust treatment, etc., which can solve problems such as low precision, large flow rate, and small measurement range, and avoid The effect of harsh environment, large measurement range and simple structure

Inactive Publication Date: 2016-02-03
MILITARY TRANSPORTATION UNIV PLA
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Problems solved by technology

However, the actual environment of the exhaust pipe of a diesel engine is high temperature, high flow rate, small particle size (mostly about 20-30 nanometers), almost turbulent flow, and particle movement is very complicated
Therefore, the measurement range is small and the accuracy is low

Method used

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  • Diagnostic method and device for particulate matter discharging for novel external automotive diesel engine
  • Diagnostic method and device for particulate matter discharging for novel external automotive diesel engine

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] It should be noted that the "connection" mentioned in this application and the words used to express "connection", such as "connected", "connected", etc., can refer to the direct connection between a certain component and another component, It can also mean that a certain component is connected to another component through other components.

[0021] Such as figure 1 , figure 2 As shown, in the embodiment of the present invention, a novel external vehicle diesel engine particle emission diagnostic device is provided, including a control unit (DCU) 13 and a sensor unit connected to the DCU, the sensor unit is used for collecting current values, and its It includes an ionizati...

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Abstract

The invention discloses a diagnostic method and device for particulate matter discharging for a novel external automotive diesel engine. The device comprises a control unit (DCU) and a sensor unit connected with the DCU. The sensor unit is used for collecting current values and comprises an ionization electrode and a signal electrode. The ionization electrode is partly wrapped with a high-temperature-resistant insulating ceramic tube. The high-temperature-resistant insulating ceramic tube is partly wrapped with insulating seal gum and is partly wrapped with a common insulating ceramic tube. An ionization area is formed by the common ceramic tube, the ionization electrode and a grounding shielding shell. The ionization area is communicated with a sampling channel through an inlet of the ionization area and is communicated with the atmosphere through a hole communicated with the atmosphere, and the sampling channel is communicated with an exhaust pipe through an exhaust sampling opening. According to the diagnostic method and device for particulate matter discharging for the novel external automotive diesel engine, the influences of the severe environment in the exhaust pipe of the diesel engine are avoided, the structure is simple, precision is high, the measuring range is large, and particulate discharging can be effectively diagnosed and measured.

Description

technical field [0001] The invention relates to the technical field of diesel engine tail gas particulate matter emission pollution control, in particular to a novel external vehicle diesel engine particulate matter emission diagnosis method and device. Background technique [0002] Diesel engine has been widely used because of its excellent power and fuel economy, but the problem of exhaust pollution caused by it is becoming more and more serious. There are two main pollutants emitted by diesel engines: nitrogen oxides (NOX) and particulate matter (PM). Particulate matter emitted by diesel engines is the main contributor to particulate matter pollutants in the atmosphere. It not only causes air pollution, but also causes harm to human health due to a large amount of inhalable carcinogens. To this end, countries have formulated strict emission regulations to limit the emission of particulate matter. [0003] At present, there are two ways to reduce particulate matter emis...

Claims

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Application Information

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IPC IPC(8): F01N11/00
CPCY02T10/40
Inventor 庞海龙资新运邓成林姚广涛徐正飞俞妍张卫锋张英锋王宏涛俞渭明
Owner MILITARY TRANSPORTATION UNIV PLA
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