公开(公告)号：US08096790B2

公开(公告)日：2012-01-17

申请号：US12289708

申请日：2008-10-31

申请人： Masashi Sadatomi ,  Takatoshi Watanabe

发明人： Masashi Sadatomi ,  Takatoshi Watanabe

IPC分类号： F04B11/00

CPC分类号： F04C2/10 ,  F04C15/0049

摘要： The invention provides an oil pump resonator in which various vibrations caused by pulsations that change in response to changes in oil pressure on a discharge port side can be attenuated by a resonator that comprises only one chamber, whereby the volume occupied by the resonator can be minimized. An oil pump in an engine, for feeding oil from a suction port to a discharge port through rotation of a rotor fitted in a pump housing, includes: a discharge flow channel communicating with the discharge port; a resonator comprising an introduction channel formed in the discharge flow channel and a chamber communicating with the introduction channel; and a piston having a leading end face section that makes up an inner wall face of the chamber, and reciprocating in response to pulsation changes. The piston slides so as to reduce the volume of the chamber as the frequency distribution of the pulsations becomes higher.

摘要翻译： 本发明提供一种油泵谐振器，其中响应于排出口侧的油压变化而变化的脉动引起的各种振动可以由仅包括一个室的共振器衰减，由此谐振器占据的体积可以最小化 。 发动机中的油泵，用于通过旋转安装在泵壳体中的转子将油从吸入口输送到排出口，包括：与排出口连通的排出流路; 包括形成在所述排出流动通道中的引入通道和与所述引入通道连通的室的谐振器; 以及活塞，其具有构成所述室的内壁面的前端面部，并且响应于脉动变化而往复运动。 当脉动的频率分布变得更高时，活塞滑动以减小腔室的体积。

公开(公告)号：US20090129950A1

公开(公告)日：2009-05-21

申请号：US12289708

申请日：2008-10-31

申请人： Masashi Sadatomi ,  Takatoshi Watanabe

发明人： Masashi Sadatomi ,  Takatoshi Watanabe

IPC分类号： F04B39/00

CPC分类号： F04C2/10 ,  F04C15/0049

摘要： The invention provides an oil pump resonator in which various vibrations caused by pulsations that change in response to changes in oil pressure on a discharge port side can be attenuated by a resonator that comprises only one chamber, whereby the volume occupied by the resonator can be minimized. An oil pump in an engine, for feeding oil from a suction port to a discharge port through rotation of a rotor fitted in a pump housing, includes: a discharge flow channel communicating with the discharge port; a resonator comprising an introduction channel formed in the discharge flow channel and a chamber communicating with the introduction channel; and a piston having a leading end face section that makes up an inner wall face of the chamber, and reciprocating in response to pulsation changes. The piston slides so as to reduce the volume of the chamber as the frequency distribution of the pulsations becomes higher.

摘要翻译： 本发明提供一种油泵谐振器，其中响应于排出口侧的油压变化而变化的脉动引起的各种振动可以由仅包括一个室的共振器衰减，由此谐振器占据的体积可以最小化 。 发动机中的油泵，用于通过旋转安装在泵壳体中的转子将油从吸入口输送到排出口，包括：与排出口连通的排出流路; 包括形成在所述排出流动通道中的引入通道和与所述引入通道连通的室的谐振器; 以及活塞，其具有构成所述室的内壁面的前端面部，并且响应于脉动变化而往复运动。 当脉动的频率分布变得更高时，活塞滑动以减小腔室的体积。

公开(公告)号：US20090010791A1

公开(公告)日：2009-01-08

申请号：US12216483

申请日：2008-07-07

申请人： Kenichi Fujiki ,  Takatoshi Watanabe ,  Masashi Sadatomi

发明人： Kenichi Fujiki ,  Takatoshi Watanabe ,  Masashi Sadatomi

IPC分类号： F01C1/10

CPC分类号： F04C2/084 ,  F04C2/101 ,  F04C15/0049

摘要： An internal gear pump which has a crescent disposed between an outer rotor and an inner rotor having a trochoidal tooth profile, and which reduces vibrations caused by pulsations generated when the fluid is discharged. The internal gear pump has an outer rotor having internal teeth formed therein, an inner rotor disposed on the inner peripheral side of the outer rotor and having formed therein external teeth that mesh with the internal teeth, and a crescent disposed in a clearance between the outer rotor and the inner rotor. Pitch spacings of the external teeth of the inner rotor are formed as non-equal spacings, and pitch spacings of the internal teeth of the outer rotor correspond to the pitch spacings of the external teeth of the inner rotor.

摘要翻译： 一种内齿轮泵，其具有设置在外转子和具有摆动齿形的内转子之间的新月形，并且减少当流体排出时产生的脉动引起的振动。 内齿轮泵具有形成有内齿的外转子，内转子，其设置在外转子的内周侧，并且在其中形成有与内齿啮合的外齿，以及设置在外齿之间的间隙中的新月形 转子和内转子。 内转子的外齿的间距形成为不等间隔，外转子的内齿的间距对应于内转子的外齿的间距。