发明名称 |
Carburetor with air and throttle valve for two-cycle engine |
摘要 |
A carburetor for providing a fuel and air mixture and a scavenging air supply to a two stroke internal combustion engine has a throttle valve received in a fuel and air mixing passage and connected to a throttle drive for controlling engine operation and an air valve received in an air passage and selectively operably connected to the throttle valve by a lost motion coupling. Preferably, the throttle valve and the air valve are barrel-type valves each comprising an opening formed through a shaft extending transversely through and rotatable within an associated bore of the carburetor body. The lost motion coupling may comprise a pair of selectively meshed gears consisting of a first partial gear connected to a shaft of the throttle valve for co-rotation with the throttle valve shaft, and a second partial gear connected to a shaft of the air valve for co-rotation with the air valve shaft and having a gap between two adjacent teeth so that the first partial gear does not mesh with the second partial gear until the throttle valve has rotated to a predetermined angle or position from an idle position. A gear ratio of the gear pair is set in such a manner that the throttle valve and the air valve are simultaneously operable at a fully opened position to permit substantially unrestricted fluid flow through their respective passages in the carburetor body. <IMAGE> |
申请公布号 |
EP1041267(A3) |
申请公布日期 |
2001.03.21 |
申请号 |
EP20000106707 |
申请日期 |
2000.03.29 |
申请人 |
WALBRO JAPAN, INC. |
发明人 |
TERUHIKO, TOBINAI;SHIN-ICHI, OHGANE |
分类号 |
F02B33/04;F02B25/16;F02B25/20;F02B25/22;F02M11/10;F02M19/00;F02M23/03 |
主分类号 |
F02B33/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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