Composition and method for detaching-free cleaning of inlet valve of direct-injection engine

A technology of cleaning composition and direct injection in the cylinder, which is applied in the field of cleaning and can solve the problems of bad influence of mechanical seal degree, time-consuming and labor-intensive, etc.

Inactive Publication Date: 2019-05-21
江苏云瀚股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the method of dismantling and washing is effective, it is time-consuming and labor-inte

Method used

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  • Composition and method for detaching-free cleaning of inlet valve of direct-injection engine
  • Composition and method for detaching-free cleaning of inlet valve of direct-injection engine

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Embodiment Construction

[0042] In order to facilitate those skilled in the art to understand the solution of the present invention, the solution of the present invention will be further described below in conjunction with specific examples. It should be understood that the embodiments of the present invention are explanations of the solution of the present invention, and are not intended to limit the protection scope of the present invention.

[0043] After the applicant conducted a laboratory analysis of the carbon deposits on the intake valve, we found that the carbon deposits on the intake valve contained more trace elements such as calcium, sulfur, phosphorus, zinc, and molybdenum. Most of these elements come from additives in engine oil, and gasoline contains less of them. Among them, the calcium element comes from the detergent, the sulfur element comes from the extreme pressure agent and anti-wear agent, the zinc element comes from the anti-wear agent and antioxidant, and the molybdenum element...

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Abstract

The invention belongs to the technical field of cleaning and discloses a composition and method for detaching-free cleaning of an inlet valve of a direct-injection engine. The composition includes a cleaning dispersant and a cleaning detergent. The cleaning dispersant includes, by mass, 3-50% of benzoyl polyisobutene amine, 3-25% of lanthanum 2-ethylhexanoate, 2-23% of cerium 2-ethylhexanoate and60-90% of a first carrier. The first carrier is a hydrocarbon solvent carrier having a distillation range of 60-90 DEG C. The cleaning detergent includes 6-30% of polyisobutene succinimide and 60-95%of a second carrier that is a hydrocarbon solvent having a distillation range of 60-90 DEG C. The composition can effectively remove carbon deposits attached to the inlet valve through a spraying manner under a condition that an air intake duct and the inlet valve are not detached.

Description

technical field [0001] The invention belongs to the field of cleaning technology, and in particular relates to a composition and method for cleaning an intake valve of an in-cylinder direct injection engine without dismantling. Background technique [0002] In recent years, turbocharging and in-cylinder direct injection technology have become an important technical development trend of ignition gasoline engines. Turbocharging has obvious advantages in terms of providing engine power density and increasing torque output. In this case, the engine power performance is significantly improved. In-cylinder direct injection technology has obvious advantages in improving fuel economy and meeting the entire emission standard. However, turbocharged direct injection engine intake valves are more prone to carbonaceous deposits during use. When the carbon adhesion on the back of the intake valve is serious, it will cause many problems. First, it will cause the engine idle speed to be ...

Claims

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Application Information

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IPC IPC(8): C11D7/26C11D7/24C11D7/32C11D7/60B08B3/08
Inventor 魏黎明程莎莎
Owner 江苏云瀚股份有限公司
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