| 摘要 |
PURPOSE:To prevent an air-fuel mixture from getting overthickned as tar gathers in a primary chamber and thereby primary pressure goes up, by making up a fuel passage, ranging from the primary chamber to a secondary chamber of an LPG vaporizer for an internal-combustion engine, from a lower part of the primary chamber. CONSTITUTION:In case of a vaporizer for liquefied petroleum gas, liquid phase fuel fed out of an LPG cylinder flows in a preheating chamber 12 from an inlet part 10 via a filter 11 and then enters a primary chamber 16 from a clearance between a primary valve 14 and a valve seat 15. At this time, the LPG is decompressed into vaporization but impurities remain unvaporized and mistly spouted out as a liquid left intact. Each of passages 27-30 is being formed so as to cause a flow of gas from the primary chamber 16 to a secondary chamber 22 to be led into the secondary chamber 22 from a bottom part of the primary chamber 16. With this constitution, misty tar is not gathered in the primary chamber 16, glowing into the secondary chamber, thus a rise in primary pressure is in no case incurred. |
