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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

Active Publication Date: 2011-11-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of turbocharging hysteresis and low utilization rate of exhaust gas, and at the same time, overcome the problems existing in the current integral electric-assisted one-stage turbocharging scheme that the motor is affected by high temperature and high-speed centrifugal force and the existing two-stage supercharging system disadvantages, an electric-assisted two-stage booster system for exhaust gas reuse is proposed

Method used

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

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Embodiment Construction

[0035] In order to better illustrate the purpose and advantages of the present invention, further introduction will be made below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 As shown, the exhaust gas reuse electric auxiliary two-stage supercharging system of the present invention includes the following parts:

[0037] 1. Electrically assisted turbine primary supercharger A: including primary supercharger compressor volute 1, primary supercharger compressor impeller 2, primary supercharger turbine 26, and primary supercharger turbine box 27 , first-stage supercharger wastegate valve 24, one-stage supercharger rotor 28, one-stage supercharger intermediate 31, motor system M (motor rotor 29 and motor stator 30);

[0038] Wherein the first-stage supercharger compressor volute 1 and the first-stage supercharger compressor impeller 2 form the first-stage supercharger compressor end, and the first-stage supercharger turbine 26 and the fir...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/04
CPCY02T10/144Y02T10/12
Inventor 张虹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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