发明名称 |
Impeller, fuel pump having the impeller, and fuel supply unit having the fuel pump |
摘要 |
A fuel pump has substantially coaxial outer and inner pump chambers. An impeller has partition walls correspondingly to the inner pump chamber to define inner vane grooves. A rear surface is located at a rear side in a rotative direction of each inner vane groove. At least a radially inner side of the rear surface inclines rearward in the rotative direction from the radially inner side to a radially outer side. A first line connects a radially inner end of the rear surface with a radially outer end of the rear surface. A second line radially extends from the radially inner end of the rear surface. The first line and the second line therebetween define a backward tilt angle α2, which satisfies a relationship of 30°≦̸α2≦̸80°. |
申请公布号 |
US8123459(B2) |
申请公布日期 |
2012.02.28 |
申请号 |
US20080203275 |
申请日期 |
2008.09.03 |
申请人 |
TOMOMATSU KENICHI;HAZAMA TADASHI;IWANARI EIJI;NAKAZU YUUJI;SAKAI HIROMI;DENSO CORPORATION |
发明人 |
TOMOMATSU KENICHI;HAZAMA TADASHI;IWANARI EIJI;NAKAZU YUUJI;SAKAI HIROMI |
分类号 |
F01D1/12 |
主分类号 |
F01D1/12 |
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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