Online carbon deposit cleaning system for air inlet valve and combustion chamber of engine and control method

Abstract

The invention discloses an online carbon deposit cleaning system for an air inlet valve and a combustion chamber of an engine and a control method. The system comprises a cleaning agent tank, a cleaning agent charging pipeline and a control circuit, wherein the control circuit comprises a cleaning working procedure; a cleaning starting circuit is arranged in the control circuit; the cleaning agent tank is arranged on a frame in an automotive engine hood; one end of the cleaning agent charging pipeline is connected with the cleaning agent tank, and the other end of the cleaning agent charging pipeline is connected with a vacuum pipeline of the engine; the vacuum pipeline is communicated with the air inlet valve of the automotive engine; a control signal in the running state of the automotive engine is connected with the starting circuit in the control circuit. According to the system and the method, the carbon deposit of the air inlet valve and the combustion chamber of the engine is cleaned on line on the premise of no changes in the conventional basic design of an automobile; the control method is simple and practical; automatic closed loop control over the inflow of a cleaning agent and vacuum pressure is realized; a cleaning process is safe and reliable, and the environment friendliness of engine emissions is improved.

Description

technical field [0001] The invention relates to peripheral equipment of automobile engines, in particular to an on-line cleaning system and control method for carbon deposits in engine intake valves and combustion chambers. Background technique [0002] Due to oil quality problems, road traffic conditions and environment, and bad driving habits, after the car has traveled thousands of kilometers, carbon deposits and gums formed in the intake valve and combustion chamber of the engine fuel system, especially the GDI engine Carbon deposits in valves and combustion chambers are more serious. [0003] Carbon deposits and colloids in engine intake valves and combustion chambers are the main factors that lead to reduced engine performance, insufficient power, increased fuel consumption, and excessive emissions, which have always troubled automobile manufacturers and automobile users. [0004] There are two traditional ways to remove carbon deposits and gums in the intake valve an...

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Problems solved by technology

[0006] However, there is a huge contradiction between the fuel quality requirements of new engines and the current situation of oil products, resulting in more serious carbon deposits in the intake valves and combustion chambers of new engines, especially the carbon deposits in the intake valves limit the advanced performance of new engines The advantages of improving power, saving fuel, and reducing emissions cannot be achieved as expected

[0007] At the same time, since the GDI engine installs the fuel injector directly in the combustion chamber, the traditional method of adding cleaning agent to the fuel tank can no longer wash the carbon deposits on the intake valve. TURBO technology leads to high engine lubricating oil temperature and higher crankcase oil exhaust gas It is easy to form a drum-shaped carbon deposit on the intake valve stem, which seriously affects the intake effect, affects the air-fuel ratio, and even causes the top valve phenomenon to occur

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