| 摘要 |
PURPOSE:To attain better head exchange efficiency by gradually enlarging the cross sectional area of a fuel passage. CONSTITUTION:Cooling water passage 4 shall be so formed as easy for diameter linear fabrication with a relatively large diameter and fuel inlet 2 is formed in a passage with a smaller diameter and adjacent to the cooling water passage 4. The liquid fuel which comes in through the small-diameter fuel inlet 2 circulates through zigzagging fuel passage 3 and flows out through carburetor outlet 21. The cross sectional area in the fuel passage 3 gradually increases as the fuel goes through the passage. In the latter haft of the fuel passage, heat conduction fins 20 are formed and heat transfer surface area increased. Thus the fuel passage 3 is gradually enlarged, while the diameter of fuel inlet 2 is reduced to locate it and close to the cooling water passage 4. Therefore LPG is heated effetively. |
