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    • 80. 发明专利
    • Variable-capacity turbocharger
    • 可变能力TURBOCHARGER
    • JP2013181396A
    • 2013-09-12
    • JP2012043683
    • 2012-02-29
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • YOKOYAMA TAKAOOSAKO TAKESHITOMITA ISAOJINNAI YASUAKITOJO MASAKINAGAE SATOMI
    • F02B37/24F01D1/14F01D5/04F01D9/02F01D17/16
    • F04D27/002F01D5/141F01D17/16F01D17/165F02B37/22F02B37/24F02C6/12F05D2220/40F05D2250/712F05D2250/713F05D2250/75Y02T10/144
    • PROBLEM TO BE SOLVED: To definitively and stably exert, in an opening direction, a moment for acting on a nozzle vane, increase safety when a variable-nozzle mechanism fails, and improve the control accuracy of a variable-nozzle mechanism in a variable-capacity turbocharger with the variable-nozzle mechanism.SOLUTION: A variable-capacity turbocharger with nozzle vanes 41a positioned at even intervals around the axis of rotation of a turbine wheel 7 so as to encircle the outer-circumferential side of the turbine wheel 7, and a variable-nozzle mechanism configured such that the blade angles of the nozzle vanes 41a are adjustable, the variable-capacity turbocharger being characterized in that the blade cross-section at a right-angle to the nozzle axis 41b of the nozzle vanes 41a has a concavely bending recess 53 formed in one or more sections on a rear-edge 51 side and on a pressure-surface 45 side in relation to the rotation center C, the front-edge 49 side in relation to the rotation center C forms a convex shape, and the surface shape on the pressure-surface 45 side substantially forms an S-shape with the position of the rotation center serving as the boundary thereof.
    • 要解决的问题:为了确定地和稳定地在打开方向上施加作用在喷嘴叶片上的力矩,当可变喷嘴机构失效时增加安全性,并且提高可变喷嘴机构的可变喷嘴机构的控制精度, 具有可变喷嘴机构的容量涡轮增压器。解决方案:具有喷嘴叶片41a的可变容量涡轮增压器,其围绕涡轮机叶轮7的旋转轴线以均匀的间隔定位,以包围涡轮机叶轮7的外周侧,以及 可变喷嘴机构构造成使得喷嘴叶片41a的叶片角度是可调节的,该可变容量涡轮增压器的特征在于与喷嘴叶片41a的喷嘴轴线41b成直角的叶片横截面具有 形成在后边缘51侧的一个或多个部分和相对于旋转中心C的压力表面45侧的凹形弯曲凹部53,相对于旋转轴的前边缘49侧 n C形成凸形,并且压力表面45侧的表面形状基本上形成具有作为其边界的旋转中心的位置的S形。