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Variable Combination and Multi-Channel Sampling Method of Engine Postprocessor

A post-processor and engine technology, applied in engine components, combustion engines, machines/engines, etc., can solve the problems of timeliness effects, inability to realize real-time switching of emission equipment, and inability to meet variable post-processor combinations, etc. Time-sensitive impact and safety protection effect

Active Publication Date: 2017-12-19
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the engine operating conditions are different, the emissions are also different. Under different operating conditions, different after-treatment combinations may be required to achieve the maximum purification efficiency. A combination of post-processor B and post-processor C is required, but most of the current post-processing is a single and fixed combination, which cannot meet the requirements of variable post-processor combinations
[0004] However, emission equipment generally has only one sampling channel. When single-channel sampling performs post-processing effects on emissions, it cannot realize real-time switching between emission equipment detection and post-processing, and will also be affected by timeliness.

Method used

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  • Variable Combination and Multi-Channel Sampling Method of Engine Postprocessor
  • Variable Combination and Multi-Channel Sampling Method of Engine Postprocessor
  • Variable Combination and Multi-Channel Sampling Method of Engine Postprocessor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] by figure 2 , image 3 As an example,

[0048] Engine post-processor variable combination and multi-channel sampling device, including: a three-way exhaust pipeline connected to the engine exhaust pipe through the first four-way 11, the three-way exhaust pipeline is in parallel relationship, through the second The four-way contraction is one way; the high-temperature-resistant first butterfly valve 51, the second butterfly valve 52, and the third butterfly valve 53 are respectively installed on the three-way exhaust pipeline, and the diesel oxidation catalytic converter DOC61 and the selective catalytic reduction SCR63 are respectively installed on two of them. , the other way is the exhaust pipe 62; the gas sampling holes located at both ends of the post-processor; the first three-way ball valve 81, the second three-way ball valve 82, the third three-way ball valve 83, and the three The ball valve is connected in parallel, and then connected in series with the detec...

Embodiment 2

[0055] by Figure 4 , Figure 5 As an example.

[0056] Engine post-processor variable combination and multi-channel sampling device, including: a three-way exhaust pipeline connected to the engine exhaust pipe through the first four-way 11, the three-way exhaust pipeline is in parallel relationship, through the second The four-way is shrunk into one way; the first butterfly valve 51, the second butterfly valve 52 and the third butterfly valve 53 with high temperature resistance are respectively installed on the three-way exhaust pipeline, and the diesel oxidation catalytic converter DOC, the particulate oxidation catalytic converter POC, and the three-way exhaust pipeline are installed respectively. Selective catalytic reduction SCR; gas sampling holes located at both ends of the post-processor; the first three-way ball valve 81, the fourth three-way ball valve 84, and the third three-way ball valve 83 connected to the front and rear sampling holes of each processor, and the...

Embodiment 3

[0060] by Figure 6 , Figure 7 As an example.

[0061]Engine post-processor variable combination and multi-channel sampling device, including: a three-way exhaust pipeline connected to the engine exhaust pipe through the first four-way 11, the three-way exhaust pipeline is in parallel relationship, through the second The four-way is shrunk into one way; the first butterfly valve 51, the second butterfly valve 52 and the third butterfly valve 53 with high temperature resistance are respectively installed on the three-way exhaust pipeline, and the diesel oxidation catalytic converter DOC, the particulate oxidation catalytic converter POC, and the three-way exhaust pipeline are installed respectively. Selective catalytic reduction SCR; an afterprocessor connected in series with the three-way exhaust pipeline, which is a diesel particulate filter DPF; gas sampling holes located at both ends of the afterprocessor; connecting the front and rear sampling holes of each processor Th...

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Abstract

The invention relates to variable combination and multi-channel sampling method and a variable combination and multi-channel sampling device of an engine postprocessor, and aims at realizing switching of different postprocessors. The variable combination and multi-channel sampling device of the engine postprocessor comprises N paths of exhaust pipelines, the engine postprocessor and gas sampling holes, wherein the N paths of exhaust pipelines are communicated with an engine exhaust pipe, and are in a parallel relationship; butterfly valves are respectively arranged on the N paths of exhaust pipelines; N is an integer greater than or equal to 2; the engine postprocessor is arranged on at least one path of the N paths of exhaust pipelines; the gas sampling holes are formed in two ends of the engine postprocessor. The variable combination and multi-channel sampling method and the variable combination and multi-channel sampling device have the beneficial effects that real-time switching of the engine postprocessor can be realized; the work of changing the postprocessor in the experiment process is removed; the safety of an experimenter is protected; the timeliness effect is removed.

Description

Technical field: [0001] The invention relates to an engine post-processor, and further relates to a variable combination and multi-channel sampling method and device for the engine post-processor. Background technique: [0002] In the face of increasingly stringent emission regulations, diesel engines need to adopt simple after-treatment devices such as diesel oxidation catalytic converter DOC, particulate oxidation catalytic converter POC, diesel particulate filter DPF, etc. to meet the requirements of emission regulations. The purification efficiency of different post-treatments on gas, smoke and particulate emissions is an important part of the engine bench study, but the repeatability of the engine emissions in different time periods under the same working condition is poor, so that the emission detection equipment detects the same emission in different time periods. The credibility of the numerical values ​​of the working conditions is relatively poor, that is, the time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/28F01N3/035F01N9/00
CPCY02T10/12Y02T10/40
Inventor 姚春德王斌吴涛阳王全刚窦站成危红媛
Owner TIANJIN UNIV