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Diesel engine DPF system rapid aging test method and system, medium and application

A rapid aging and DPF technology, which is used in internal combustion engine testing, mechanical component testing, and machine/structural component testing. and filtration efficiency, shortening the development and evaluation cycle, and expanding the scope of application

Active Publication Date: 2021-06-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] Through the above analysis, the problems and defects of the existing technology are: the selection of test conditions of the existing aging test method is quite different, the method is complicated, and the standard and effective evaluation of DPF cannot be carried out; at the same time, the existing aging test method takes a long time , Manpower and material resources consumption is large
[0005] The difficulty in solving the above problems and defects is as follows: since different engine manufacturers directly select DPF devices from different parts manufacturers, the rapid aging method of DPF is complicated, and the method principle is not uniform, and it is impossible to effectively and uniformly evaluate all DPF devices

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  • Diesel engine DPF system rapid aging test method and system, medium and application

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Embodiment 1

[0072] 1. DPF rapid aging theory

[0073] Catalytic DPF (Catalytic DPF, CDPF) is a kind of DPF that uses catalytic regeneration as its regeneration principle. At present, CDPF technology has become the main device for diesel engine to control exhaust particles. Based on the device characteristics of CDPF, its thermal aging speed can be accelerated by increasing its working temperature. However, due to the large differences in the use scenarios and technologies of various CDPFs, the rapid aging methods are complicated, and the test conditions vary greatly, so there is a lack of CDPF aging test methods that can be evaluated uniformly. Starting from this point of view, the present invention studies the regeneration and aging mechanism of DPF, and finds a rapid aging method that is universally applicable to all CDPFs, which can complete the aging of CDPF conveniently and efficiently, and provides a basis for the research and development and evaluation of diesel vehicle emission s...

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Abstract

The invention belongs to the technical field of diesel engine aftertreatment device aging test and discloses a diesel engine DPF system rapid aging test method and system, a medium and application. The method comprises steps that temperature-time characteristics corresponding to all temperature intervals in the actual aging process of the diesel engine DPF system are converted into multipoint temperature-time characteristics of rapid aging circulation according to the Arrhenius formula; the actual aging information of the diesel vehicle is collected, multi-point rapid aging temperature and corresponding time are calculated based on the collected information and the type of the diesel engine, and an equivalent rapid aging cycle is established; various different DPF parts to be aged are selected, and the selected DPF parts to be aged are preprocessed; a rack rapid aging test is carried out based on the established equivalent rapid aging cycle; after rapid aging, performance evaluation is carried out on each DPF piece. According to the method, the expected aging effect can be quickly and conveniently achieved, and a lot of time, manpower and material resources are saved; The method is closer to the actual aging state of the DPF, and the equivalent effect is good.

Description

technical field [0001] The invention belongs to the technical field of aging testing of diesel engine post-processing devices, and in particular relates to a rapid aging testing method, system, medium and application of a diesel engine DPF system. Background technique [0002] At present, the durability of a particulate filter (DPF) is an important evaluation index and an important factor related to vehicle performance and emissions. The aging test is to test the catalytic conversion efficiency of the catalyst after a certain time or mileage aging test to test the durability of the catalyst. The aging test of diesel particulate filter for vehicles requires the device to undergo more than thousands of hours of bench aging tests on the engine bench, or the entire vehicle fleet to conduct at least nearly 200,000 kilometers of road aging tests, which requires huge manpower and material resources and financial resources. [0003] However, the existing rapid aging methods have l...

Claims

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Application Information

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IPC IPC(8): G01N25/00G01N31/10G01M13/00G01M15/04F01N3/021F01N11/00
CPCF01N3/021F01N11/00G01M13/00G01M15/04G01N25/00G01N31/10Y02T10/40
Inventor 李家琛葛蕴珊郝利君谭建伟王欣
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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