Engine

Abstract

The invention relates to an engine belonging to the technical field of power machinery. The engine is also provided with an air cylinder, a high pressure air storage tank, a high pressure exhaust valve and a high pressure inlet valve except for a power cylinder of a common internal combustion engine. A composite circulating mode of low compression ratio, high compression-rising ratio and high expansion ratio is adopted in the engine. The premixing combustion of a full working condition range of the internal combustion engine is realized by spraying a homogeneous mixture gas in a high pressureair compression ignition cylinder; and the engine adopts an exhaust gas recirculation technology and an air valve starting phase changeable technology. According to the engine load size and the pressure of the high pressure air storage tank, the air cylinder can be switched into an air power cylinder or a combustion power cylinder, the fuel spraying of the power cylinder is stopped, the power cylinder can be driven by using high pressure air and can also be used as the air cylinder to provide air with proper pressure for a turbosuperchager to drive in a mode of hybrid power. Air of the high pressure air storage tank is supplied by the air cylinder or directly charged by a filling station. The engine has higher economic, discharging and dynamic properties than the common internal combustion engine.

Description

technical field [0001] The invention relates to an air injection supercharging ignition engine, which belongs to the technical field of power machinery. Background technique [0002] As we all know, with the increasingly stringent requirements on economy and emission, people have applied a large number of electronic control technologies and post-processing technologies to internal combustion engines, which has greatly increased the cost of internal combustion engines, especially the fuel injection pressure of diesel engines higher than 200MPa , which greatly reduces the reliability of the oil supply system. On the other hand, take the low-cost in-cylinder purification route, develop a pre-mixed compression ignition system, and reduce nitrogen oxides (NO x ) and particulate (PM) harmful emissions, and keep the engine at a high efficiency. Since the control problem of the ignition phase has not been solved, it has only achieved good results in medium and low operating conditi...

AI Technical Summary

Problems solved by technology

[0002] As we all know, with the increasingly stringent requirements for economy and emissions, people apply a large number of electronic control technologies and post-processing technologies to internal combustion engines on the one hand, which greatly increases the cost of internal combustion engines, especially the fuel injection pressure of diesel engines higher than 200MPa. , so that the reliability of the oil supply system is greatly reduced

On the other hand, take the low-cost in-cylinder purification route, develop a premixed compression ignition system, and reduce nitrogen oxides (NO x ) and particulate (PM) harmful emissions, and keep the engine at a high efficiency. Since the ignition phase control problem has not

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