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1. 发明专利

JP2002054529A FUEL PUMP 审中-公开
公开(公告)号：JP2002054529A
公开(公告)日：2002-02-20
申请号：JP2001207613
申请日：2001-07-09
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAKAHASHI YUKIO , MACHIMURA HIDENORI , HOSHI KIICHI
IPC分类号： F02M37/06 , F02M59/04 , F02M59/44 , F04B1/16
摘要： PROBLEM TO BE SOLVED: To provide a small fuel pump having high reliability and small pressure fluctuation by lubricating a driving part with a lubricating fluid. SOLUTION: A mechanism part for converting rotational motion to rock motion comprises a shaft 1 for transmitting external driving force, a swash plate 1a rotated by the shaft 1 and a rocking plate 7 for converting the rotational motion of the awash plate 1a to the rock motion. The rock motion of the rocking plate 7 causes a plurality of pistons 13 to reciprocate. A crank chamber 30 housing the swash plate 1a, the rocking plate 7 and the pistons 13 is divided into a fuel chamber 36 and a mechanism chamber 34 by bellows 40. Bearings 3, 4 for transmitting the driving force between the shaft 1 and the swash plate 1a of the mechanism part and bearings 5, 6 for transmitting the driving force between the swash plate 1a and the rocking plate 7 are disposed within the mechanism chamber 34 and lubricated with the oil. The plurality of pistons 13 are disposed within the fuel chamber 36 and each sucks and discharges the fuel.

2. 发明专利

JPH1082353A FUEL PUMP 失效
公开(公告)号：JPH1082353A
公开(公告)日：1998-03-31
申请号：JP23803996
申请日：1996-09-09
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAKAHASHI YUKIO , MACHIMURA HIDENORI , HOSHI KIICHI
IPC分类号： F02M59/08 , F02M59/04 , F02M59/44 , F04B1/12 , F04B1/14 , F04B9/02 , F04B27/10 , F04B53/10 , F04B53/18
摘要： PROBLEM TO BE SOLVED: To provide a fuel pump high in relaibility, small in pressure fluctuation and small in size by lubricating a driving part by using a fluid with lubricity. SOLUTION: It is constituted of a shaft 1 to transmit driving force from outside as a mechanism part to convert rotary motion to oscillating motion, a cam plate 15 to be rotated by the shaft land an oscillating plate 7 to convert rotary motion of the cam plate 1a to oscillating motion. A plural number of pistons 13 are reciprocated by oscillating motion of the oscillating plate 7. The cam plate 1a, the oscillating plate 7 and a crank chamber 30 to store the pistons 13 are separated into a fuel chamber 36 and a mechanism chamber 34 by a bellows 40. A bearing part is oil lubricated by arranging bearing parts 3, 4 to transmit driving force between the shaft 1 and the cam plate 1a in the mechanism part and bearing parts 5, 6 to transmit driving force between the cam plate 1a and the oscillating plate 7 in the inside of the mechanism part 34. Fuel is sucked and discharged by the respective pistons by arranging a plural number of the pistons 13 in the inside of the fuel chamber 36.

3. 发明专利

JP2009203987A High pressure fuel supply pump for internal combustion engine 有权
标题翻译：用于内燃机的高压燃油泵
公开(公告)号：JP2009203987A
公开(公告)日：2009-09-10
申请号：JP2009141789
申请日：2009-06-15
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： YAMADA HIROYUKI , TAWARA SHIGENORI , SAITO JUNJI , TAKAHASHI YUKIO , ABE MASAMI
IPC分类号： F02M59/34 , F02M51/00 , F02M59/26 , F02M59/36 , F02M59/46 , F02M63/02 , F04B15/08 , F04B49/24
CPC分类号： F02M59/442 , F02M59/367 , F02M63/0017 , F02M63/0035 , F02M63/0225 , F04B1/0421 , F04B15/08 , F04B49/243 , F04B53/166
摘要： PROBLEM TO BE SOLVED: To provide a delivery capacity control mechanism of a high pressure fuel supply pump to be improved. SOLUTION: An inlet valve opened and closed automatically by pressure in a pressurizing chamber is provided in a fuel absorption passage, this inlet valve is opened by pressing it by a plunger of an electromagnetic plunger mechanism, pulling-in operation timing of the plunger is controlled in accordance with an operation condition of the internal combustion engine, and opening time of the inlet valve in a compression stroke of the pump is controlled to change flow rate of delivery of high pressure fuel. An intake opening opened and closed by the inlet valve was formed in a section abutted on a holder in an electromagnetic driving mechanism. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种要改进的高压燃料供应泵的输送能力控制机构。解决方案：在燃料吸收通路中设置有通过加压室内的压力而自动打开和关闭的入口阀，该进气阀通过电磁柱塞机构的柱塞冲压而打开，根据内燃机的运转状态控制活塞，控制泵的压缩行程中的入口阀的打开时间，以改变高压燃料的输送流量。在与电磁驱动机构中的保持件抵接的部分形成有由入口阀打开和关闭的进气口。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2007146861A High pressure fuel supply pump of internal combustion engine 有权
标题翻译：内燃机高压燃油泵
公开(公告)号：JP2007146861A
公开(公告)日：2007-06-14
申请号：JP2007061188
申请日：2007-03-12
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： YAMADA HIROYUKI , TAWARA SHIGENORI , SAITO JUNJI , TAKAHASHI YUKIO , ABE MASAMI
IPC分类号： F02M59/44 , F02M59/36 , F02M59/46 , F02M63/02 , F04B15/08 , F04B49/24
CPC分类号： F02M59/442 , F02M59/367 , F02M63/0017 , F02M63/0035 , F02M63/0225 , F04B1/0421 , F04B15/08 , F04B49/243 , F04B53/166
摘要： PROBLEM TO BE SOLVED: To improve a delivery capacity control mechanism of a high pressure fuel supply pump. SOLUTION: An inlet valve opened and closed automatically by pressure in a pressurizing chamber is provided in a fuel absorption passage, this inlet valve is opened by pressing it by a plunger of an electromagnetic plunger mechanism, pulling-in operation timing of the plunger is controlled in accordance with an operation condition of the internal combustion engine, and opening time of the inlet valve in a compression stroke of the pump is controlled to change flow rate of delivery of high pressure fuel. An intake opening opened and closed by the inlet valve is formed in a section abutted on a holder in an electromagnetic driving mechanism. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提高高压燃料供给泵的输送能力控制机构。解决方案：在燃料吸收通路中设置有通过加压室内的压力而自动打开和关闭的入口阀，该入口阀通过电磁柱塞机构的柱塞冲压而打开，根据内燃机的运转状态控制活塞，控制泵的压缩行程中的入口阀的打开时间，以改变高压燃料的输送流量。由入口阀打开和关闭的进气口形成在与电磁驱动机构中的保持件相接的部分中。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2001050174A FUEL SUPPLY PUMP 失效
公开(公告)号：JP2001050174A
公开(公告)日：2001-02-23
申请号：JP21957799
申请日：1999-08-03
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAKAO KUNIHIKO , HEIKO KENJI , NOGAMI TADAHIKO , YAMADA HIROYUKI , TAKAHASHI YUKIO , SAITO JUNJI , ABE MASAMI
IPC分类号： F02M47/00 , F02M55/02 , F02M59/46 , F04B53/10 , F16K15/04
摘要： PROBLEM TO BE SOLVED: To provide a fuel supply pump capable of stabilizing a position of a value element in constitution of a check valve as a discharge valve and a suction valve and improving performance of the pump by speedily and certainly seating the valve element on a seating part and low in cost. SOLUTION: It is possible to improve a sealing property at a tapered part as it is possible to stably seat a valve element 26a on a valve seat 26b as well as to hold the valve element 26a at a stable position in a passage by forming a restricting means or the tapered part on a valve element holding member 26c to hold the valve element 26a. Additionally, it is possible to constitute a suction valve or a discharge valve in simple constitution.

6. 发明专利

JPH10122152A SWINGING TYPE BELLOWS PUMP 失效
公开(公告)号：JPH10122152A
公开(公告)日：1998-05-12
申请号：JP27584096
申请日：1996-10-18
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAMURA TAKESHI , HOSHI KIICHI , TAKAHASHI YUKIO , TERAKADO KAZUYOSHI , KOJIMA KAZUO
IPC分类号： F04B9/02 , F04B43/08
摘要： PROBLEM TO BE SOLVED: To make a lubricating fluid and a forcibly sending fluid hard to leak from a joining part between a swinging plate and bellows, and shorten the total length by housing the swinging plate inside a cup-shaped member having a flange, and providing a swinging mechanism part where the swinging plate and the cup-shaped member are mechanically joined together by holding sealing property. SOLUTION: A cup-shaped member 15d having a flange having a through hole concentric with the axial center of bellows 15c, is joined to a left end part of the bellows 15c by a flange part 15e so that its cup part is arranged inside the bellows 15c, and a bellows ring 15a having a flange part to be locked on a step difference part 14 of a pump casing 11, is joined to the other end of the bellows 15c. A swinging plate 15b is joined to the left side of the cup- shaped member 15d having a flange, and a swinging mechanism part 15 is constituted. Therefore, the swinging plate can be housed inside the bellows through the cup-shaped member having a flange, and the total length of the swinging mechanism part can be shortened, and a size reduction in a pump main body can be attained.

7. 发明专利

JPH09250447A FLUID SUPPLY PUMP AND FUEL SUPPLY PUMP 失效
公开(公告)号：JPH09250447A
公开(公告)日：1997-09-22
申请号：JP5869196
申请日：1996-03-15
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： MACHIMURA HIDENORI , HOSHI KIICHI , KANAMARU NAONOBU , TAKAHASHI YUKIO
IPC分类号： F02M59/06 , F02M59/44 , F04B1/24
摘要： PROBLEM TO BE SOLVED: To reduce slide resistance and improve seizure resistance by providing a pintle valve on the opposite inclined shaft side of a cylinder and providing a balance groove parallel to a pintle valve groove on the periphery of the pintle valve in a fluid supply pump provided with a swash plate and reciprocating plural pintles. SOLUTION: In a swash plate type fuel supply pump for supplying low- viscosity fuel for direct fuel injection in an engine cylinder, an inlet port 16 of a rear cover 14 communicates with a crank chamber 20 in a housing 12 and communicates with a pintle valve 22 coaxial with the rotary shaft of the cylinder. The pintle valve 22 has a first intake pressure groove 24, a communicating path 22a to this intake pressure groove 24, a first delivery pressure groove 30, and a communicating path 60 from this delivery pressure groove 30 to the delivery port. This pintle valve 22 is also provided with a balance groove consisting of a second intake pressure groove 32 to communicate with the intake pressure groove 24 and the delivery pressure groove 30, and a second delivery pressure groove 34, thereby the radial force from each groove due to the intake and delivery pressures is balanced and the generation of the radial force to the cylinder is restricted.

8. 发明专利

JPH10339231A FUEL PUMP 失效
公开(公告)号：JPH10339231A
公开(公告)日：1998-12-22
申请号：JP14940997
申请日：1997-06-06
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAKAHASHI YUKIO , MACHIMURA HIDENORI , SAITO JUNJI , HASHIDA MINORU , ONOSE TORU , HOSHI KIICHI
IPC分类号： F02M37/06 , F01B3/02 , F02D41/02 , F02M59/08 , F02M69/00
摘要： PROBLEM TO BE SOLVED: To surely demonstrate the damper effect by incorporating a pressure regulator to energize a pressure relief valve in a closing direction by a spring one end of which is supported on a position-adjustable fixing base in a swash type fuel pump to uniquely determine the opening of a valve hole. SOLUTION: In a fuel pump of a cylinder fuel injection device of an engine, a plunger in a cylinder is reciprocated as a swash to be rotated is rotated, and the fuel is sucked and discharged into a pressure chamber. In a pressure regulator incorporated in the fuel pump, a fixing base 51 having a communication hole 52 whose advancing/retracting position is regulated by a screw mechanism is screwed in a cylinder 50. A pressure relief valve 54 to open/close a valve hole 53 to communicate the cylinder 50 with a pressure chamber is energized in the closing direction through a holder 55 by the energizing force of a spring 56 one end of which is supported by the fixing base 51, and the pressure relief valve 54 is opened/closed as the swash is oscillated, to discharge the fuel into the pressure chamber.

9. 发明专利

JPH09107650A AC GENERATOR FOR CAR 失效
公开(公告)号：JPH09107650A
公开(公告)日：1997-04-22
申请号：JP26385295
申请日：1995-10-12
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： OGURI TAKASHI , FUKAYA YOSHINORI , TAKAHASHI YUKIO
IPC分类号： H02K5/04 , H02K5/15 , H02K15/14 , H02K19/22
摘要： PROBLEM TO BE SOLVED: To provide a fitting structure of a stator core by which machining of a fitting section of the stator core can be eliminated without decreasing an assembling accuracy. SOLUTION: In a fitting section of a stator core 12 of an AC generator for cars, an inner diameter of a faucet of an end frame is partially the same as the diameter of a faucet of the stator core 12 and partially larger than that by 0.5m or above in the radius. These parts of the faucet of the end frame which have different inner diameters are alternately positioned on the circumference and the stator core 12 is held axially by the parts of the faucet of the end frame which have a larger inner diameter and is held radially by the other parts of the faucet of the end frame which have a smaller inner diameter. The parts of the faucet of the end frame which have a smaller inner diameter are provided with steps of 0.5mm or above in the axis direction from the parts which have a larger inner diameter at the opposite side of the stator core to prevent the parts of the end frame of a smaller inner diameter from matching the stator core in the axis direction.

10. 发明专利

JP2013164079A High-pressure fuel supply pump for internal combustion engine 有权
标题翻译：用于内燃机的高压燃油泵
公开(公告)号：JP2013164079A
公开(公告)日：2013-08-22
申请号：JP2013110483
申请日：2013-05-27
申请人： Hitachi Automotive Systems Ltd , 日立オートモティブシステムズ株式会社 , Hitachi Car Eng Co Ltd , 株式会社日立カーエンジニアリング
发明人： YAMADA HIROYUKI , TAWARA SHIGENORI , SAITO JUNJI , TAKAHASHI YUKIO , ABE MASAMI
IPC分类号： F02M59/20 , F02M59/36 , F02M59/46 , F02M63/02 , F04B15/08 , F04B49/24
CPC分类号： F02M59/442 , F02M59/367 , F02M63/0017 , F02M63/0035 , F02M63/0225 , F04B1/0421 , F04B15/08 , F04B49/243 , F04B53/166
摘要： PROBLEM TO BE SOLVED: To improve a discharge capacity control mechanism of a high-pressure fuel supply pump.SOLUTION: A pump includes: a cylinder, a plunger which reciprocates within the cylinder to change a volume in the cylinder, a valve body provided at the downstream side of the through hole in order to open and close a through hole for connecting the interior of the cylinder with a low pressure fuel passage, a first spring for biasing the valve body in a valve closing direction, an engaging member installed at the side of the low pressure fuel passage to operate the valve body to an opening position against a force of the first spring, a second spring for imparting the engaging member resisting force to the force of the first spring, and an electromagnetic driving device for releasing the engaging member from a state of being engaged with the valve body against the force of the second spring.
摘要翻译：要解决的问题：提高高压燃料供给泵的排放容量控制机构。解决方案：泵包括：气缸，在气缸内往复运动以改变气缸中的体积的柱塞，设置在气缸内的阀体通孔的下游侧，用于打开和关闭用于将气缸内部连接到低压燃料通道的通孔，用于沿阀关闭方向偏压阀体的第一弹簧，安装在该阀体的接合构件低压燃料通道的一侧，以克服第一弹簧的力将阀体操作到打开位置，用于使接合构件抵抗第一弹簧的力的第二弹簧和用于释放第一弹簧的电磁驱动装置接合构件抵抗第二弹簧的力从与阀体接合的状态。

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