Pressure sustaining system for lpg bombe

Abstract

A pressure sustaining system for an LPG bombe may include the LPG bombe, in which an LPG fuel may be injected and which may be equipped with a ventilation tunnel for emitting the air inside the LPG bombe, and a check valve unit, installed at an opening of the ventilation tunnel, with a fixed conversion pressure so as to keep an air pressure inside the LPG bombe above a predetermined value.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2011-0120506 filed on Nov. 17, 2011, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to a pressure maintaining system for an LPG gas tank, and more particularly, to such a pressure maintaining system for an LPG gas tank that maintains the pressure of the LPG fuel even at a low temperature to improve vehicle cooling. Ability to start. Background technique [0004] In general, LPG (Liquefied Petroleum Gas) fuel has a high octane number, excellent heat resistance, and is inexpensive, so it is commonly used in various commercial vehicles including automobiles. This LPG fuel is a gaseous substance that is liquefied at room temperature by applying a fixed amount of pressure and pumped into a gas tank to be used. [0005] Generally, an LPG gas tank is formed using ...

AI Technical Summary

Problems solved by technology

For example, in summer when the temperature is 20-30°C (butane 100%), the pressure in the fuel tank is about 3bar, and the gauge pressure at the injector is 8-10bar, but at a temperature of -25°C to In winter at 0°C (butane 100%), the pressure in the fuel tank reaches 0bar, while the gauge pressure at the injector is 5bar, which means that the fuel pressure is reduced and the starting ability of the engine is significantly reduced

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