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1. 发明专利

JPH07167078A EQUIPMENT FOR SUPPLYING INTERNAL COMBUSTION ENGINE FOR AUTOMOBILE WITH FUEL FROM STORAGE TANK 失效
公开(公告)号：JPH07167078A
公开(公告)日：1995-07-04
申请号：JP25519994
申请日：1994-10-20
申请人： BOSCH GMBH ROBERT
发明人： UBUE RISUKOFU , YOTSUHEN TENITSUSEN
IPC分类号： F02M37/08 , F02M37/04 , F02M37/20 , F04D5/00
摘要： PURPOSE: To avoid a short circuit of flow between a pressure opening and a pressure relief hole to guarantee reliable release of pressure and venting in the range of each vane wheel by disposing a pressure relief opening in the end wall of a pump chamber within the range of a web pressure between the ends of a feed passage. CONSTITUTION: A feed pump for feeding fuel from a storage tank to an internal combustion engine has a disc-shaped vane wheel 13 driven for rotation and a generally ring-shaped feed passage 27 having a channeled cross section is formed in a chamber end wall 25, both ends of the passage 27 being separated from each other by a web 31. In this case, a pressure releasing opening 39 serving as a pressure relief hole is provided in the range of a sealing surface formed within the height o the web 31 between the end face of the vane wheel 13 and the chamber end wall 25. The minimum intervals of the pressure relief hole 39 from a suction opening 29 and a pressure opening 21 provided in the chamber end wall 25 are set to be equal to or greater than the maximum interval (c) between the vanes 35 of the vane wheel 13 at the height position of the outlet port of the pressure relief hole 39.

2. 发明专利

JPH0849683A CARRYING UNIT CARRYING FUEL FROM STORAGE TANK OF INTERNAL COMBUSTION ENGINE FOR AUTOMOBILE 失效
公开(公告)号：JPH0849683A
公开(公告)日：1996-02-20
申请号：JP19996895
申请日：1995-08-04
申请人： BOSCH GMBH ROBERT
发明人： YURUGEN TORAIBAA , PEETAA SHIEERUHASU , MIHIYAERU KIYUUN , MATEIASU RORUBUAAGE , BUERUNAA SHIYUMITSUTO , INGO RIHITAA , UBUE RISUKOFU , ARUBERUTO GERUHARUTO , PEETAA ZOKORU
IPC分类号： F02M37/04 , F04D5/00
摘要： PROBLEM TO BE SOLVED: To avoid that mutually axially facing transporting passage ends are simultaneously and impactingly controlled for opening or closing, and to prevent generation of large noise caused by resulting strong pressure pulsation. SOLUTION: Mutually axially facing ends in relation to a pump chamber, of a first transporting passage 31 and a second transporting passage 33, are arranged mutually displaced in the rotation direction of an impeller 9.

3. 发明专利

JPH0771392A CIRCUMFERENTIAL FLOW TYPE PUMP 失效
公开(公告)号：JPH0771392A
公开(公告)日：1995-03-14
申请号：JP18353494
申请日：1994-08-04
申请人： BOSCH GMBH ROBERT
发明人： UBUE RISUKOFU
IPC分类号： F02M37/08 , F02M37/04 , F04D5/00
摘要： PURPOSE: To suppress occurrence of a voltex flow in an overflowing range for improvement in pumping efficiency by forming a front supply passage in a wall member with a suction opening, and spilling fuel from a rear supply passage with a reduced cross section into the front supply passage. CONSTITUTION: When an impeller 14 rotates, fuel flows from a storage tank only into a rear supply passage 40 formed in a wall member 24 through a suction opening 42. An inflow range 46 formed within a range in the peripheral direction of the suction opening 42 is formed so as to move into the rear supply passage 40. The outer inflow range 46 in the radial direction is limited by the wall extending almost in parallel with a rotational axis of the impeller 14 against the rear supply passage 40. Therefore, the formation of voltex flow generating fuel reverse flow toward the opening suction 42 is inhibited by the inflow range 46 or the overflowing range, thus it is possible to make fuel flow from the suction opening 42 smoothly into the rear supply passage 40.

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