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公开(公告)号：US09074593B2
公开(公告)日：2015-07-07
申请号：US13767255
申请日：2013-02-14
Applicant: DENSO CORPORATION
Inventor： Masayuki Kobayashi , Eiji Ito , Yoshitomo Oguma , Yuusuke Andou
CPC classification number: F04B53/001 , F02M59/02 , F04B7/0015 , F04B11/0008 , F04B43/02 , F16L55/0338 , F16L55/04
Abstract: A high-pressure pump has an elastic member arranged in a damper chamber between a first diaphragm and a second diaphragm. The elastic member is always in contact with both diaphragms while the high-pressure pump is operated. When the diaphragms are further vibrated due to a resonance under a situation where a frequency of the pressure pulsation of low-pressure fuel is in agreement with the characteristic frequency of the diaphragms, the elastic member restricts the deformation of the diaphragms. Therefore, the resonance of the first diaphragm and the second diaphragm can be restricted.
Abstract translation: 高压泵具有在第一隔膜和第二隔膜之间的阻尼室中布置的弹性构件。 当高压泵运转时，弹性部件总是与两个膜片接触。 当在低压燃料的压力脉动的频率与隔膜的特征频率一致的情况下由于共振而使隔膜进一步振动时，弹性构件限制隔膜的变形。 因此，可以限制第一膜片和第二膜片的共振。
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公开(公告)号：US20130230417A1
公开(公告)日：2013-09-05
申请号：US13767255
申请日：2013-02-14
Applicant: DENSO CORPORATION
Inventor： Masayuki KOBAYASHI , Eiji Ito , Yoshitomo Oguma , Yuusuke Andou
IPC: F04B43/02
CPC classification number: F04B53/001 , F02M59/02 , F04B7/0015 , F04B11/0008 , F04B43/02 , F16L55/0338 , F16L55/04
Abstract: A high-pressure pump has an elastic member arranged in a damper chamber between a first diaphragm and a second diaphragm. The elastic member is always in contact with both diaphragms while the high-pressure pump is operated. When the diaphragms are further vibrated due to a resonance under a situation where a frequency of the pressure pulsation of low-pressure fuel is in agreement with the characteristic frequency of the diaphragms, the elastic member restricts the deformation of the diaphragms. Therefore, the resonance of the first diaphragm and the second diaphragm can be restricted.
Abstract translation: 高压泵具有在第一隔膜和第二隔膜之间的阻尼室中布置的弹性构件。 当高压泵运转时，弹性部件总是与两个膜片接触。 当在低压燃料的压力脉动的频率与隔膜的特征频率一致的情况下由于共振而使隔膜进一步振动时，弹性构件限制隔膜的变形。 因此，可以限制第一膜片和第二膜片的共振。
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公开(公告)号：US09970435B2
公开(公告)日：2018-05-15
申请号：US14729082
申请日：2015-06-03
Applicant: DENSO CORPORATION
Inventor： Masayuki Kobayashi , Eiji Ito , Yoshitomo Oguma , Yuusuke Andou
CPC classification number: F04B53/001 , F02M59/02 , F04B7/0015 , F04B11/0008 , F04B43/02 , F16L55/0338 , F16L55/04
Abstract: A high-pressure pump has an elastic member arranged in a damper chamber between a first diaphragm and a second diaphragm. The elastic member is always in contact with both diaphragms while the high-pressure pump is operated. When the diaphragms are further vibrated due to a resonance under a situation where a frequency of the pressure pulsation of low-pressure fuel is in agreement with the characteristic frequency of the diaphragms, the elastic member restricts the deformation of the diaphragms. Therefore, the resonance of the first diaphragm and the second diaphragm can be restricted.
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