Double-driving parallel sequential supercharging compressor

Abstract

The invention discloses a double-driving parallel sequential supercharging compressor which comprises a compressor casing and a compressor impeller installed in the compressor casing. A compressor flow path is arranged in the compressor casing, and a compressor air inlet and a compressor air outlet which both communicate with the compressor flow path are arranged on the compressor casing. The compressor impeller is provided with an impeller air inlet flow path which communicates with the compressor air inlet and the compressor flow path. The double-driving parallel sequential supercharging compressor of the invention can effectively improve the compressor surge when the compressor is under a low speed condition, and effectively expand intake air flow when the compressor is under a middle or high speed condition and improve engine performance. The compressor casing and the compressor impeller of the double-driving parallel sequential supercharging compressor of the invention has good structural inheritance, and engineering is easy to be realized rapidly.

Description

technical field [0001] The invention relates to a booster compressor, in particular to a dual-drive parallel sequential booster compressor with a double-channel compressor casing and a single compressor impeller, which belongs to the field of internal combustion engine booster. Background technique [0002] The turbocharger uses the energy of the exhaust gas discharged from the engine to drive the turbine to rotate, thereby driving the impeller of the compressor coaxial with the turbine to rotate at a high speed. The compressor pushes the compressed air into the engine cylinder, increasing the air volume of the engine. Driven by the flow rate, the combustion is more complete, thereby increasing the power of the engine, reducing fuel consumption, and reducing harmful emissions and noise. [0003] In recent years, with the substantial increase in engine power per liter, the technical indicators of turbocharging also need to be continuously improved, which requires a turbocharg...

AI Technical Summary

Problems solved by technology

However, at present, traditional turbochargers basically use a single-impeller single-channel compressor, which is prone to turbocharger surge phenomenon in the low-speed operating range of the engine, and turbocharger flow blockage is prone to occur in the high-speed operating range of the engine, and Cannot effectively meet the higher pressure ratio, flow range and efficiency level that the turbocharger needs to achieve

Therefore, many engine applications are forced to adopt a two-stage turbocharger system. In terms of performance, the two-stage turbocharger system has many advantages, but compared with the traditional single-impeller turbocharger, the two-stage turbocharger The pressure system is bulky and complex in layout, and the design and production technology is difficult and the manufacturing cost is high. This two-stage turbocharging system is only suitable for high-end engines, and it is difficult to promote it.

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