Method for cleaning three-way catalyst without demounting three-way catalyst

A three-way catalytic converter and cleaning fluid technology, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve problems such as poor cleaning effect, achieve good cleaning effect, easy cleaning, and reduced fuel consumption
CN103758640AInactive Publication Date: 2014-04-30陈凤鸣
6 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
陈凤鸣
Publication Date
2014-04-30
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention provides a method for cleaning a three-way catalyst without demounting the three-way catalyst. The method includes the steps that water is input from an oxygen sensor to conduct spray-wash on the three-way catalyst; cleaning liquid is input from an air inlet of the oxygen sensor to conduct spray-wash on the three-way catalyst washed with water, wherein the cleaning liquid comprises 3wt%-8wt% of tartaric acid, 5wt%-10wt% of citric acid, 8wt%-18wt% of glacial acetic acid, 3wt%-6wt% of malic acid, 10wt%-50wt% of scale and corrosion inhibitor, 0.06wt%-0.20wt% of EDTA and 15wt%-50wt% of deionized water; water is input from the air inlet of the oxygen sensor to conduct secondary water wash on the three-way catalyst which is washed with the cleaning liquid. By the utilization of the cleaning liquid and the combination of water and the cleaning liquid input from the air inlet of the oxygen sensor, the three-way catalyst can be cleaned, and the cleaning effect is good.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the cleaning field of three-way catalytic converters, in particular to a disassembly-free cleaning method for three-way catalytic converters. Background technique

[0002] The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It converts harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through redox.

[0003] Because fuel contains harmful substances such as sulfur and phosphorus, chemical complexes will be formed inside the three-way catalytic converter after combustion, and the engine is often in an incomplete combustion state, and carbonates with calcium and magnesium ions will be formed in the three-way catalytic converter. These reasons are likely to cause three-way catalytic converter poisoning failure, blockage and other failures. After the three-way catalytic converter is blocked...

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