Pressure sustaining system for lpg bombe

A technology of air pressure and gas tank, which is applied in the direction of charging system, power plant, and the arrangement combined with the fuel supply of internal combustion engine, etc., which can solve the problems such as the decline of engine starting ability, and achieve the effect of smooth injection

Active Publication Date: 2013-05-29
HYUNDAI MOTOR CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Pressure sustaining system for lpg bombe
  • Pressure sustaining system for lpg bombe
  • Pressure sustaining system for lpg bombe

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Embodiment approach

[0044] According to an exemplary embodiment of the present invention, when a small amount of air is left in the LPG gas tank 110, if the air pressure in the gas tank is less than the external atmospheric pressure measured with a pressure gauge, the check valve 130 is shown in Figure 2(a) Closed as shown and the air in the tank will not leak.

[0045] On the other hand, if the air pressure inside the LPG tank 110 is greater than the external atmospheric pressure measured with a pressure gauge, the check valve 130 is opened as shown in FIG. 2(b) and the air 150 inside the tank is injected.

[0046] As explained above, in an exemplary embodiment of the present invention, whether the check valve 130 is opened or closed is determined by comparing the air pressure inside the air tank with the atmospheric pressure outside the air tank. Therefore, this properly controls the evaporation pressure of the LPG fuel in the gas tank, and thus provides a fuel tank with LPG fuel. Therefore, t...

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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 ...

Claims

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Application Information

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IPC IPC(8): F02M21/00
CPCF02M21/0221Y02T10/32F02M21/00Y02T10/30Y10T137/7837B60K15/07F02M21/02F02M37/00
Inventor 宋柱泰
Owner HYUNDAI MOTOR CO LTD
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