Carbon deposit detergent for gasoline direct injection engine combustion chamber

Abstract

The invention discloses a carbon deposit detergent for a gasoline direct injection engine combustion chamber. The carbon deposit detergent is prepared from the following components in parts by weight:12 to 25 parts of 2-methyl-2,4-pentendiol, 15 to 25 parts of propanediol butyl ether, 12 to 25 parts of methylbenzene, 10 to 20 parts of xylene, 0.5 to 5 parts of preservative, 2 to 8 parts of N-methyl pyrrolidone, 4.5 to 12 parts of dispersing agent, 3 to 15 parts of organic alkali, 2 to 15 parts of polyether polyols, and 0.3 to 3 parts of lubricating agent. The carbon deposit detergent for thegasoline direct injection engine combustion chamber is good in cleaning effect, high in cleaning efficiency, harmless to a ternary catalytic converter, and capable of effectively cleaning the carbon deposit in the combustion chamber, optimizing the air inlet amount, improving the utilization efficiency of the fuel oil and improving the current situation of difficulty in cold starting.

Description

technical field [0001] The invention belongs to the technical field of automobile carbon deposit cleaning, and in particular relates to a carbon deposit cleaning agent used in a combustion chamber of a direct injection engine in a gasoline cylinder. Background technique [0002] A gasoline direct injection engine (GDI, Gasoline Direct Injection engine) or a gasoline direct injection engine (T-GDI) equipped with a turbocharger directly injects gasoline into the combustion chamber without passing through the intake port. In the daily use of the vehicle, although the design is very sophisticated, due to the differences in the quality of oil products in various gas stations in various regions of China, and other external factors such as forced ventilation of the engine crankcase, exhaust gas recirculation and other systems, the combustion chamber of the direct injection engine cannot Avoid carbon deposits. Carbon deposits in the fuel injector will lead to poor atomization effec...

AI Technical Summary

Problems solved by technology

Polyetheramine (PEA) can also clean carbon deposits, but the cost is higher

However, the current commercially available solvent-based cleaning agents have a certain swelling effect on the rubber and plastic parts of the pipeline, which will affect the sealing performance and service life of the oil circuit; the cost of commercially available cleaning agents is relatively high; the cleaning effect is not good, and the cleaning efficiency is low; In particular, existing commercially available cleaning agents are harmful to the three-way catalyst (such as attaching or covering the three-way catalyst, or deactivating the three-way catalyst), which affects the ser

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