Integrated device and control method for lng vaporization, venting, recovery, utilization and air supply and pressurization

Abstract

The present invention proposes an integrated device for LNG vaporization, venting, recovery, utilization and air supply and pressurization, comprising: a heat exchanger (20), a one-way valve (12), a solenoid valve (13), an HC sensor (14), a dual-purpose Air tank (15), pressure sensor (16), vent valve (17), low pressure filter (18), voltage regulator (19), low pressure solenoid valve (21), electronically controlled pressure regulator (22), The one-way valve (26) and the electromagnetic valve (31), the invention solves the problem of boosting delay of the exhaust gas turbocharger and avoids the surge of the compressor. Make full use of the energy of the turbocharger of the engine, add an air booster device on this basis, and significantly improve the hysteresis of the supercharger, thereby significantly improving the power of the vehicle.

Description

technical field [0001] The invention belongs to the field of gaseous fuel low-temperature liquefaction storage vent recovery and engine pressurization, and in particular relates to an integrated device for LNG vaporization vent recovery and gas replenishment to reduce pressurization delay. Background technique [0002] In recent years, smog has occurred frequently in many places in my country, and the control of smog has become a difficult problem for the country. Studies have shown that PM2.5 particles in the air of major cities in my country mainly come from diesel vehicles. Natural gas burns cleanly and has low soot emissions. Studies have shown that replacing diesel with natural gas as vehicle fuel is one of the important measures to control urban smog. In addition, natural gas is a low-carbon energy source, the main component is methane, and the CO released by combustion 2 It is more than 20% less than diesel, and NOx is reduced by 39%, which is more in line with the ...

AI Technical Summary

Problems solved by technology

However, due to the delay of the exhaust gas turbocharger boosting, the engine output power is insufficient and the acceleration performance of the vehicle is poor due to the small exhaust flow of the engine in the early stage and the unsatisfactory transient response under acceleration and climbing conditions.

In order to reduce the boosting delay, many technical methods have been proposed in the industry, such as two-stage boosting, variable section boosting and other boosting technologies, but it is difficult to completely solve the delay problem.

There is also a way to eliminate the delay of supercharging by using air supplementation and supercharging, but the function of the air supplementation device is single. Due to the limited available space of the vehicle, the space utilization rate of this method is small, such as the scheme proposed by CN201420529738

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