System and method for measuring combustion characteristic of internal combustion engine based on infrared radiation

Abstract

The invention relates to a system and a method for measuring the combustion characteristic of an internal combustion engine based on infrared radiation. The system and the method are used for measuring the combustion and spraying characteristics of the internal combustion engine. The system comprises an infrared endoscope, an infrared optical fiber, an infrared filter, a thermal infrared imager, a data processor and an endoscope thermostat, wherein the infrared endoscope is arranged on a probe hole in a combustion chamber of the internal combustion engine; one end of the infrared optical fiber is connected with the infrared endoscope, and a fiber scope is arranged at the other end of the infrared optical fiber; the fiber scope and the thermal infrared imager are coaxially arranged; the infrared filter is arranged between the fiber scope and the thermal infrared imager; the infrared imager is connected with the data processor; the endoscope thermostat is connected with the infrared endoscope. Compared with the prior art, the system and the method have the advantages of adaptability under the condition of no light source, good detection effect, advanced method and the like.

Description

Technical field [0001] The invention relates to the field of internal combustion engines, in particular to a system and method for measuring the combustion characteristics of internal combustion engines based on infrared radiation. Background technique [0002] With the increasing energy crisis and environmental pollution problems, "energy saving and emission reduction" has become the theme of the times. However, in recent years, the proportion of automobile fuel consumption in my country's oil consumption has increased. According to data, 30% of China's imported crude oil is consumed by automobiles, and the proportion of crude oil consumed by automobiles will rise to 50% in the future. At the same time, its exhaust emissions also cause serious pollution to the atmospheric environment. The harmful gases in automobile exhaust emissions mainly include carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NO), particulate matter (PM), etc. Some data show that air pollution cau...

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Problems solved by technology

However, endoscopes based on visible light can only see the high-temperature stage of combustion. For low-temperature combustion methods such as HCCI and LTC, due to the low temperature, the combustion process hardly radiates visible light, which limits its measurement and diagnosis effects.

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