CONNECTOR

• Main Authors: KANEGAE RYOSUKE, SHIBATA RYUJI, KAWAI REIYA, ODAKA YOSHINORI, TAKIMOTO ISHI
• Format: Patent
• Language: English; Japanese
• Published: 17.09.2020
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

To provide a connector that can reduce pulsation in a low-pressure pipe with a simple structure and prolong a service life of a mold, in a fuel supply system capable of supplying high-pressure fuel.SOLUTION: A valve body 60 constituting a connector 15 comprises: a valve seat contact surface 61a that axially separates from an annular valve seat 33c1 by pressure of low-pressure fuel to form a forward flow passage P when high-pressure fuel does not flow backward, and can contact the annular valve seat 33c1 when the high-pressure fuel flows backward; and a tapered through hole 61b that is formed radially inward with respect to the valve seat contact surface 61a, forms an orifice flow passage with a smaller cross-sectional area than the forward flow passage P, and allows the backflow of the high-pressure fuel when the high-pressure fuel flows backward.SELECTED DRAWING: Figure 2 【課題】高圧燃料を供給可能な燃料供給系において、簡易な構造により低圧配管における脈動を低減することができると共に、金型の長寿命化を図ることができるコネクタを提供する。【解決手段】コネクタ１５を構成する弁体６０は、高圧燃料が逆流しない場合には低圧燃料の圧力によって環状弁座３３ｃ１から軸方向に離間して順方向流路Ｐを形成し、高圧燃料が逆流する場合には環状弁座３３ｃ１に当接可能な弁座当接面６１ａと、弁座当接面６１ａよりも径方向内方に形成され、順方向流路Ｐよりも流路断面積が小さなオリフィス流路を形成し、高圧燃料が逆流する場合に高圧燃料の逆流を許容するテーパ状貫通孔６１ｂとを備える。【選択図】図２