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11. 发明专利

JPS6143258A Variable venturi type carburetor 失效
标题翻译： VENTURI VENTURI型碳刷机
公开(公告)号：JPS6143258A
公开(公告)日：1986-03-01
申请号：JP16419584
申请日：1984-08-07
申请人： Aisan Ind Co Ltd , Toyota Motor Corp
发明人： MOGI KAZUHISA , KATO TAKASHI , TANAKA HIROSHI , YOKOO MASASHI , SENDA MASANORI , NAKANISHI ISAO , SAKURAI KOJI
IPC分类号： F02M19/03 , F02M7/06 , F02M7/17 , F02M7/23 , F02M7/24
CPC分类号： F02M7/24 , F02M7/17
摘要： PURPOSE:To improve the response performance of fuel control in acceleration and deceleration by allowing an air bleed passage to communicate to an atmospheric chamber in the piston operation part of a variable venturi type carburetor. CONSTITUTION:A needle valve 4 is fixed at the lower edge of a suction piston 3 installed onto the upstream side of a throttle valve 6. The piston 3 is operated by introducing a negative pressure into a negative-pressure chamber 15 from a suction hole 18 formed at the lower edge surface of the piston 3. The atmospheric chamber 16 on the other side of the negative-pressure chamber 15 communicates to a suction passage 2 on the upstream side of the piston 3 through a passage 19. The atmospheric chamber 16 further communiates to an air bleed hole 27 through a valve 40 and a passage 43. When a valve 38 is opened according to a variety of inputs and the valve 40 is opened and the piston 3 moves leftward immediately in acceleration, a negative pressure is temporarily generated in the atmospheric chamber 16, and the air bleed supplied from the hole 27 is reduced, and dense mixed gas is supplied. In deceleration when the piston 3 immediately moves rightward, a high pressure is temporarily generated in the atmospheric chamber 16, and a large amount of air is supplied from the opening 27, and lean mixed gas is supplied.
摘要翻译：目的：通过允许排气通道与可变文丘里型化油器的活塞操作部分的大气室连通，提高加速和减速时燃油控制的响应性能。构成：针阀4固定在安装在节流阀6的上游侧的吸入活塞3的下端。活塞3通过从吸入孔18向负压室15内施加负压而动作形成在活塞3的下边缘表面。负压室15的另一侧的大气室16通过通道19与活塞3的上游侧的吸入通道2连通。大气室16进一步通过阀40和通道43连接到排气孔27.当阀38根据各种输入打开并且阀40打开并且活塞3在加速中立即向左移动时，暂时产生负压在大气室16中，从孔27供给的排气减少，并且供给致密的混合气体。当活塞3立即向右移动时，在大气室16中暂时产生高压，从开口27供给大量的空气，供给贫混合气体。

12. 发明专利

JPS6143256A Variable venturi type carburetor 失效
标题翻译： VENTURI VENTURI型碳刷机
公开(公告)号：JPS6143256A
公开(公告)日：1986-03-01
申请号：JP16481784
申请日：1984-08-08
申请人： Aisan Ind Co Ltd , Toyota Motor Corp
发明人： KATO TAKASHI , TANAKA HIROSHI , MOGI KAZUHISA , YOKOO MASASHI , TAMURA YOSHIO , OOTA YOZO , HIROZAWA HIDENORI , KOBAYASHI MASAHIRO
IPC分类号： F02M3/12 , F02M7/16 , F02M7/17
CPC分类号： F02M7/17 , F02M3/12
摘要： PURPOSE:To prevent the variation of engine revolution by forming a fuel passage which is branched from the upstream of the metering jet of a variable venturi type carburetor and opened to a suction passage on the upstream side of a throttle valve, and forming said opened port part into a spread form free of horizontal surface. CONSTITUTION:A needle valve 4 at the edge part of a slidable piston 14 installed onto the upstream side of a throttle valve 6 supplies the fuel corresponding to the gap between a metering jet 21 into a suction passage 5 from a nozzle 23. A fuel passage 24 branched from the upstream side of the jet 21 supplies the idle low-speed fuel into the suction passage 5 between the throttle valve 6 and a piston 14 from an opened port 25b through a vertical passage 25a. Said opened port 25b is spread towards the suction passage and formed into bugle form, and since a horizontal plane does not exist, the fuel accumulation at the opened port 25b is prevented.
摘要翻译：目的：通过形成从可变文丘里型化油器的计量喷嘴的上游分支并在节流阀的上游侧通向吸入通道的燃料通道来防止发动机转速的变化，并且形成所述开口部分成为无水平面的展开形式。构成：安装在节气门6的上游侧的可滑动活塞14的边缘部分处的针阀4将与计量喷射21之间的间隙对应的燃料从喷嘴23供给到吸入通道5中。燃料通道从喷射器21的上游侧分支的24从通过竖直通道25a从打开的端口25b将怠速低速燃料供给到节流阀6和活塞14之间的吸入通道5中。所述打开的端口25b朝向抽吸通道扩展并形成为手环形式，并且由于不存在水平面，因此防止了打开端口25b处的燃料积聚。

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