Electricity-auxiliary two-stage supercharging system capable of reusing exhaust gas

A supercharging system and electric auxiliary technology, applied in the direction of machines/engines, internal combustion piston engines, mechanical equipment, etc., can solve the problems of turbocharging hysteresis and low utilization rate of exhaust gas, etc., achieve high temperature load reduction, easy implementation, and improved power and emission performance effects
CN102230418AActive Publication Date: 2011-11-02BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2011-11-02

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Abstract

The invention relates to an electricity-auxiliary two-stage supercharging system capable of reusing exhaust gas, belonging to the technical field of waste gas turbine supercharging. The electricity-auxiliary two-stage supercharging system specifically comprises the first-stage booster of an electricity-auxiliary turbine, the second-stage booster of a waste gas turbine, an electromagnetic three-way valve, an inlet and outlet pipeline system, a supercharging control circuit and an engine system. In the electricity-auxiliary two-stage supercharging system, the flexible control of opening and closing the three-way electromagnetic valve is used for further improving engine intake pressure by a second-stage supercharging system while solving the problem of waste gas turbine supercharging delaying, thereby realizing the high-pressure ratio of the engine supercharging, and improving the power and the emission performance of the engine under the whole working condition; the waste gas applying work in the second-stage booster of a waste gas turbine can be further utilized in the first-stage booster of an electricity-auxiliary turbine; and a storage battery is charged by power generation to fully utilize waste gas energy and effectively utilize fuel energy. Thus, the electricity-auxiliary two-stage supercharging system has an important energy-saving meaning.
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Description

technical field

[0001] The invention relates to an electric auxiliary two-stage supercharging system for waste gas reuse, which belongs to the technical field of waste gas turbocharging. Background technique

[0002] Since the advent of exhaust gas turbocharging technology, it has been greatly popularized due to its good effects in greatly increasing engine output power, improving fuel economy, improving exhaust pollution, and compensating for power loss in plateau environments. Some diesel engines and some gasoline engines use exhaust gas turbocharging technology.

[0003] However, after the turbocharged vehicle engine is used, there are many problems in the operating characteristics of the engine to be overcome, one of which is low-speed performance. When the supercharged engine is running at a low speed, due to the aerodynamic relationship between the supercharger and the engine, the position of the matching operation line deviates during acceleration and loading, and th...

Claims

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