A molecular membrane vehicle nitrogen and oxygen separation device and separation method

Abstract

The invention discloses a molecular film type automotive nitrogen and oxygen separation device which comprises a turbocharger, a nitrogen and oxygen separator, a gas inlet valve, a gas outlet valve, a negative pressure pump and an electric control throttling valve. The turbocharger is driven by a turbine in an automobile turbocharger, so that the air is compressed to be conveyed to two paths of the nitrogen and oxygen separation device, the nitrogen and oxygen separation device can separate oxygen from the air, the air with high oxygen content is output, and the air is supplied to an engine for use through the gas outlet valve. The two paths of the nitrogen and oxygen separation device work alternately, when the temperature of the two paths of the nitrogen and oxygen separation device is too high to influence oxygen production efficiency, a main air inlet pipeline is opened to provide air normally by controlling the opening degree of the electric control throttling valve, and thus the phenomena of gas circuit plugging and engine stalling are avoided. According to the automotive nitrogen and oxygen separation device, the two branch paths work alternately, high concentration oxygen can be supplied to the engine continuously so that fuel can burn and act, and the burning utilization rate of the fuel is improved.

Description

technical field [0001] The invention relates to the field of nitrogen and oxygen separation, in particular to a molecular membrane type vehicle nitrogen and oxygen separation device and a separation method. Background technique [0002] With the development of the economy, energy shortage and environmental pollution have become worldwide problems. How to further improve the efficiency of internal combustion engines, save fuel, and reduce emissions has become one of the important directions for the development of internal combustion engine technology; with the development of automobile technology, internal combustion engine technologies, such as turbochargers High compression ratio, anti-shock fuel, multi-point direct injection, stratified combustion, lean combustion, intake and exhaust adjustment, high-energy ignition and other aspects of technology have been developed very maturely, and the thermal efficiency of internal combustion engines is already facing the bottleneck of...

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Problems solved by technology

[0005] In order to solve the technical problem in the prior art that the oxygen content at the inlet end decreases after working for a period of time, the separation efficiency is reduced, the present invention designs and develops a molecular membrane nitrogen and oxygen separation device for vehicles, and provides two sets of Nitrogen and oxygen separation devices, they can work alternately, so that the nitrogen and oxygen separators in the non-working state can perform exhaust gas removal operations to improve separation efficiency, and provide a bypass and bypass flow control method. The air supply through the bypass ensures the normal operation of the engine during operation

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