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1. 发明专利

JP2002242792A FUEL FEEDING DEVICE 失效
公开(公告)号：JP2002242792A
公开(公告)日：2002-08-28
申请号：JP2001038512
申请日：2001-02-15
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： INAGAKI HIDETO , SAITO AKINORI , TAKEDA KEISO
IPC分类号： F02M55/02 , F02N19/00 , F02N17/08
摘要： PROBLEM TO BE SOLVED: To provide a fuel feeding device capable of reducing the discharge amount of a unburnt fuel, discharged right after starting of an engine without ensuring a time required for the starting of the engine for a long time. SOLUTION: A low pressure fuel pump 17 is situated on the upstream side of fuel piping 16 for feeding fuel in a fuel tank 15 to an injector 12, disposed on an engine side. A high pressure fuel pump 18 capable of being driven by the engine is situated on the side situated downstream from the low pressure fuel pump 17. A delivery pipe 19 is situated on the side positioned downstream from the high pressure fuel pump 18, and a pressure increasing device 30 capable of increasing the pressure of the delivery pipe 19 right before the starting of the engine is situated in the delivery pipe 19. This constitution enables the injection of the fuel at a high pressure from a first cycle available during the starting of the engine.

2. 发明专利

JPH1090124A APPARATUS FOR MEASURING SPRAY PATTERN 失效
公开(公告)号：JPH1090124A
公开(公告)日：1998-04-10
申请号：JP26796396
申请日：1996-09-17
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： SAITO AKINORI , TSUKADA ATSUSHI , TAKEDA KEISO , OGAWA MINORU
IPC分类号： G01M15/04 , F02M65/00 , G01M15/00
摘要： PROBLEM TO BE SOLVED: To highly accurately and quickly measure a spray pattern by operating and editing a pressure distribution by a spray momentum based on an output signal of a pressure detection means and positional relation data set by a positioning means and, outputting the momentum in a one-dimensional or two-dimensional direction. SOLUTION: An operating means 41 operates and edits a pressure distribution by a momentum of a spray 85 within a plane approximately parallel to the spray 85 on the basis of an output signal of a pressure sensor 21 and positional relation data set by a positioning means 31. The positioning means 31 can freely change a positional relationship of the pressure sensor 21 and a fuel spray valve 81 in X, Y, Z three directions. The pressure sensor 21 is moved in two directions on an X, Y, Z coordinate separated by a predetermined distance approximately at right angles to a direction of the spray 85, thereby to measure the pressure distribution within the plane. A fuel 80 is supplied from a fuel tank 82 to the fuel spray valve 81, and the fuel spray valve 81 is driven by driving circuits 811, 812.

3. 发明专利

JPH09264232A DEPOSIT REDUCING METHOD OF FUEL INJECTION VALVE AND DEPOSIT REDUCING TYPE FUEL INJECTION VALVE 失效
公开(公告)号：JPH09264232A
公开(公告)日：1997-10-07
申请号：JP9938596
申请日：1996-03-27
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP , DENSO CORP , NIPPON SOKEN
发明人： SAITO AKINORI , KINOSHITA MASAO , MATSUSHITA SOICHI , NIWA YUTAKA , SHIBATA HITOSHI
IPC分类号： F02M51/06 , F02B75/12 , F02M53/04 , F02M61/18
摘要： PROBLEM TO BE SOLVED: To suppress the cumulus of deposits by reducing the temperature of the injection port of a fuel injection valve lower than the specified distillation temperature of fuel, and make a deposit precursor flow out and from the injection port by ejection flow of fuel, and eliminating the deposit precursor, while holding the deposit precursor in fuel in a liquid phase condition. SOLUTION: In a deposit reducing type fuel injection valve 1, the temperature of the injection port 3 of a fuel injection valve 1 is reduced lower than a temperature which distillates from fuel for 90%, and a cooling water passage 5 is arranged on the top end part of the fuel injection valve 1 so as to cool the top end part of the fuel injection valve 1 positively. A deposit precursor included in fuel is dispersed and held in a liquid phase condition, it is prevented adhesion between the inner surface of the injection port 3 and the precursor from applying thereon so as to suppress the cumulus of deposits on the inner surface of the injection port 3, and also the precursor dispersed in fuel flows out from the injection port 3 together with in distillation fuel having fluid performance when fuel is injected.

4. 发明专利

JPH07167015A NOZZLE FOR ALCOHOL FUEL 失效
公开(公告)号：JPH07167015A
公开(公告)日：1995-07-04
申请号：JP34314993
申请日：1993-12-14
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： SAITO AKINORI , KINOSHITA MASAO , SATO YASUO
IPC分类号： F02M61/16
摘要： PURPOSE:To restrain a seat section and a needle valve section form being worn, and reduce lubricant consumption by feeding lubricant to the seat section via a lubricant feed passage just before the needle valve is closed, thereby forming an oil film, and then closing the needle valve. CONSTITUTION:The nozzle comprises a needle valve member 2 fitted in a nozzle main body 1 which has a seat section 11 and injection port 12 formed at its tip section, wherein the needle valve member abuts against the seat section 11 for controlling fuel injection out of the injection port 12. A fuel feed passage 3 for feeding fuel (alcohol) to the injection port 12 from a fuel pump 30, and a lubricant feed passage 4 for feeding lubricant to the seat section 11 from a lubricant feed pump 40 are formed. In this place, a lubricant feed system is provided with a check valve 50 which permits lubricant to be fed when lubricant pressure exceeds fuel pressure, and with a lubricant feed control means 5 interposingly provided with a throttle 51, so that lubricant is designed to be fed to the seat section 11 just before the needle valve is closed.

5. 发明专利

JP2003269297A FUEL INJECTION VALVE 审中-公开
公开(公告)号：JP2003269297A
公开(公告)日：2003-09-25
申请号：JP2002069547
申请日：2002-03-14
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： INAGAKI HIDETO , SAITO AKINORI , YASUDA AKIO
IPC分类号： F02M61/12 , F02M61/10 , F02M61/16
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection valve in which large valve travel is set without degrading reliability by improving a wear resistance of a supported portion of a valve member. SOLUTION: In a nozzle part 40 of the fuel injection valve, a needle 20 inserted in a needle body 14 is supported coaxially and axially movably with respect to the needle body 14 by bearing parts 42A and 42B each comprising a plurality of steel balls 44. When the needle 20 is lifted axially, a valve 22 separates from a valve seat 18 to open an injection nozzle 16, and when the needle 20 is lowered, the injection nozzle 16 is closed. Each steel ball 44 rolls with the lifting and lowering motion of the needle 20, so that the supported portions of the needle 20 experience no sliding wear to improve a wear resistance. The lift of the needle 20 is thus set large. COPYRIGHT: (C)2003,JPO

6. 发明专利

JPH11148446A FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11148446A
公开(公告)日：1999-06-02
申请号：JP31853797
申请日：1997-11-19
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： YAMAMOTO YASUHIRO , ISHIKAWA TOMOJI , SAITO AKINORI
IPC分类号： F02B75/12 , F02M61/18
摘要： PROBLEM TO BE SOLVED: To obtain a desired fuel flow even when an included angle of a nozzle hole is not formed corresponding to a prescribed included angle caused by the machining allowance or the like, by connecting a main well in the downstream from a sheet part of a valve element, to the nozzle hole through a fuel metering passage comprising an uniform passage section. SOLUTION: A nozzle hole 74 is extended in a state that it is inclined to a central axis of a fuel injection valve body 71 at a prescribed angel θ1, a height(H) of the nozzle hole 74 is almost uniform at every position, a width of the nozzle hole 74 is gradually narrowed toward the inside with a prescribed included angle, and a width(W) of an external opening of the nozzle hole 74 is larger than the height(H). A side face 74a in the height direction of the main well 72c side of the nozzle hole 74 and the fuel tank 72c are connected by a fuel metering passage 75 having an uniform passage section, whereby the desired fuel flow can be obtained even when the included angle of the nozzle hole 74 is not formed corresponding to a prescribed included angle caused by the machining allowance or the like.

7. 发明专利

JPH04318274A FUEL INJECTION VALVE 失效
公开(公告)号：JPH04318274A
公开(公告)日：1992-11-09
申请号：JP11092291
申请日：1991-04-15
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： SAITO AKINORI , KAWAMURA KIYOMI , SAWADA DAISAKU , HASHIMOTO EIJI
IPC分类号： F02M51/08
摘要： PURPOSE:To provide a fuel injection valve of good responsivenness being possible to open/close a fuel injection port with a small electromagnetic force. CONSTITUTION:A spring 38 for energizing a needle valve 42 in a direction of a fuel injection port 34, fuel supply path 36 for supplying high pressure fuel toward the injection port 34 closed by the needle valve 42, open driving coil 50 for opening the fuel injection port 34 by moving the needle valve 42 against the above-mentioned energizing force and a close driving coil for closing the fuel injection port 34 by moving the needle valve 42 against a pressure of the above-mentioned high pressure fuel are contained. The spring 38 is formed such that its energizing force F1 is generated to obtain a relation where F2

8. 发明专利

JPH02176542A MEASURING METHOD FOR FINE-GRAIN DISTRIBUTION STATE 失效
公开(公告)号：JPH02176542A
公开(公告)日：1990-07-09
申请号：JP33108488
申请日：1988-12-28
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： SATO YASUO , YANAGIHARA HIROMICHI , SAITO AKINORI
IPC分类号： G01N15/02 , F02M65/00 , G01M15/04 , G01N21/64
摘要： PURPOSE:To execute the measurement by discriminating at least one fine-grain group from other fine-grain group by allowing at least one fine-grain group in plural fine-grain groups to contain a substance having an optical luminescence being different from others. CONSTITUTION:From an injection nozzle 17 of a 2-fuel injection system, fluorescent agent added light oil is injected first, and subsequently, methanol is injected continuously. A delaying circuit 33 allows a xenon flash lamp 25 to emit a light beam at a suitable moment of this injection, by which a film in a camera 29 is sensitized by a scattered light and fluorescence from a fine-grain group 4 of fuel. For instance, a fluorescent agent emits green fluorescence by using a near ultraviolet area part as an excitation light in this light emission. Accordingly, in a fine-grain group 40, a fine-grain group of light oil emits green fluorescence, and a fine-grain group of methanol scatters a purple irradiation light and assumes a purple color. When this state is caught by the camera 29, an area of a green color and a purple color can be photographed in an injection pattern, therefore, distributions of light oil and methanol are discriminated and can be measured simultaneously.

9. 发明专利

JP2000080970A FLUID INJECTION VALVE 失效
公开(公告)号：JP2000080970A
公开(公告)日：2000-03-21
申请号：JP27055498
申请日：1998-09-07
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： SAITO AKINORI , TAKEDA KEISO
IPC分类号： F02M61/10 , F02D41/02 , F02M61/18
摘要： PROBLEM TO BE SOLVED: To realize a good flat fan-like spray pattern, to suppress the sticking of a deposit to an injection hole and to facilitate the manufacturing of an injection valve. SOLUTION: A fuel injection valve 1 used for a direct injection gasoline engine is provided with a guide 2 provided inside an injection valve body 10 to hold a valve element 3, an orifice member 4 disposed in the tip of the injection valve body 10 and having an injection hole 41 opened to be extended in the radial direction of the injection valve body 10, and a plurality of opposing fuel passage 24 formed to be communicated with the injection hole 41 via the valve element 3 between the injection valve body 10 and the guide 2 and to apply a distribution pressing force expanded in the diameter direction of the injection hole orthogonal to a valve element axial direction by clashing the flow of fuel flowing along the tip part of the valve element 3.

10. 发明专利

JPH1089192A DEPOSIT REDUCING-TYPE FUEL INJECTION VALVE 失效
公开(公告)号：JPH1089192A
公开(公告)日：1998-04-07
申请号：JP26256396
申请日：1996-09-10
申请人： TOYOTA CENTRAL RES & DEV , DENSO CORP , TOYOTA MOTOR CORP
发明人： KINOSHITA MASAO , SAITO AKINORI , NIWA YUTAKA , OTANI HIROYUKI , MATSUSHITA SOICHI
IPC分类号： F02M53/04 , F02B3/06 , F02M61/14 , F02M61/16
摘要： PROBLEM TO BE SOLVED: To reduce a change of the flow rate by restraining deposits from being formed and deposited on the inner surface of a nozzle hole. SOLUTION: In a fuel injection valve 1 in which a nozzle hole 3 is faced to a combustion chamber 2 of an internal combustion engine to directly inject and supply fuel to the combustion chamber, a temperature adjusting means 5 for adjusting the temperature of the tip of a nozzle on which the nozzle hole 3 is arranged to the 90% or less distillation point of fuel is composed of a heat flow forming means formed between the nozzle 8 on which the nozzle hole 3 is arranged and an engine head 4, and for discharging the heat flow to be supplied to the nozzle 8 to the engine head 4.

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