LNG LNG LNG fuel supply system of LNG vehicle

摘要

The present invention allows the LNG vehicle to maintain proper pressure, whether it is stationary or running, and to prevent the weathering phenomenon due to the difference in the specific gravity value of the constituent components of the LNG fuel in storing and using the LNG fuel in the storage tank And it is possible to solve the difficulty of driving the engine due to lack of fuel due to the low gas pressure due to lack of evaporation time of the liquid LNG during charging and to use the heat exchanger operating at room temperature without using any additional power even when stopped for a long time The present invention relates to a piping system for an LNG fuel supply system of an LNG vehicle capable of minimizing changes in components of a LNG liquid and a gas phase fuel. The construction of the LNG fuel piping system includes a LNG storage tank in parallel and a meteorological LNG fuel supply pipe and a liquid LNG fuel supply pipe And the gas-phase piping extending from the LNG storage tank through the exhaust valve is arranged at a position in front of the heat exchanger. Then combined with each other after the valve is supplied to the rear side of the heat exchanger is pressure increase through the heat exchanger while flowing toward the front side of the heat exchanger installation And if it exceeds the predetermined value, it is sent to the respective LNG storage tanks through the pressure increase control pipe.