Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tail gas disposal system and hydrocarbon conversion efficiency calculating method and fault diagnosing method thereof

A technology for exhaust gas treatment and conversion efficiency, which is applied in the diagnosis device of exhaust gas treatment device, exhaust gas treatment, and electronic control of exhaust gas treatment device, etc. It can solve low efficiency, low-carbon hydrogen conversion efficiency, and inaccurate hydrocarbon measurement. jetting etc.

Active Publication Date: 2019-12-31
NANJING KEYI ENVIRONMENTAL PROTECTION SCI & TECH
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Low hydrocarbon conversion efficiencies can be caused by "real" inefficiencies caused by problems in the heat generating unit and DPF (e.g. plugged DOC, sulfur poisoning, catalyst particle buildup in the DOC or DPF, etc.), or by problems with hydrocarbon metering injection "Show" inefficiencies (e.g. inaccurate hydrocarbon metering injection)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tail gas disposal system and hydrocarbon conversion efficiency calculating method and fault diagnosing method thereof
  • Tail gas disposal system and hydrocarbon conversion efficiency calculating method and fault diagnosing method thereof
  • Tail gas disposal system and hydrocarbon conversion efficiency calculating method and fault diagnosing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0067] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0068] Such as figure 1 As shown, an exhaust gas treatment system of the present invention includes an internal combustion engine 100 and a catalytic conversion device 160 located at the exhaust outlet of the exhaust manifold 101 of the internal combustion engine. An external hydrocarbon injection device, a first temperature sensor 163 , a first differential pressure sensor 164 , a second temperature sensor 167 , a third temperature sensor 169 , a second differential pressure sensor 168 and a controller 150 . Exhaust gas channel 166 , conical constriction 165 , DOC 161 and DPF 162 are arranged along the direction of exhaust gas outlet. Exhaust gas generated in internal combustion engine 100 enters exhaust gas channel 166 through exhaust manifold 101 , and the controller is ECU. The external hydrocarbon injection device is arranged on the exha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a tail gas disposal system and a DPF temperature control system and a control method thereof. The tail gas disposal system comprises a catalyst conversion device which comprises a tail gas channel, a cone-shaped neck, a DOC and DPF. An external hydrocarbon injection device is connected to the tail gas channel, a first temperature sensor is arranged on the upstream side of the DOC, a first differential pressure sensor is arranged on the upstream side of the DOC, a second temperature sensor and a third temperature sensor are separately arranged on the upstream and downstream sides of the DPF, and a second differential pressure sensor for measuring the outlet pressure of the DPF and the pressure difference of the DPF is arranged on the DPF. A controller is electricallyconnected to an internal combustion engine, the first temperature sensor, the second temperature sensor, the third temperature sensor, the first differential pressure sensor and the second differential pressure sensor separately. Whether the tail gas disposal system has faults or not can be judged accurately and the fault type can be judged accurately according to the hydrocarbon conversion efficiency of the DOC and the DPF for maintenance, so that the maintenance judging time is shortened.

Description

technical field [0001] The invention relates to a tail gas treatment system, in particular to a tail gas treatment system and a method for calculating the conversion efficiency of hydrocarbons and a fault diagnosis method thereof. Background technique [0002] Exhaust gas discharged from the engine has been identified as the main cause of air pollution, and an exhaust gas treatment system can be used to remove air pollutants in the exhaust gas in the prior art. In exhaust treatment systems, diesel particulate filters (DPF) are commonly used to capture particulate matter (PM), which may include unburned hydrocarbon particles (soot) and small amounts of other particles such as metal oxide particles (ash) . Particulate matter accumulates in the DPF and requires a regeneration process to remove accumulated soot before the accumulation causes excessive back pressure in the engine. [0003] Usually during regeneration, a heat generating device is used to raise the temperature of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01N13/00F01N3/025F01N9/00F01N11/00
CPCF01N3/0253F01N9/002F01N11/00F01N13/008F01N13/009Y02T10/40
Inventor 齐宝华
Owner NANJING KEYI ENVIRONMENTAL PROTECTION SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com