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11. 发明专利

JPH06173789A EVAPORATED FUEL TREATMENT DEVICE FOR INTERNAL CMBUSTION ENGINE 失效
公开(公告)号：JPH06173789A
公开(公告)日：1994-06-21
申请号：JP34980392
申请日：1992-12-02
申请人： HONDA MOTOR CO LTD
发明人： YAMANAKA MASAYOSHI , MARUYAMA HIROSHI , SUZUKI TAKESHI , SAWAMURA KAZUTOMO , KURODA YOSHITAKA
IPC分类号： F02B77/08 , F02M25/08 , G01M15/04
摘要： PURPOSE:To precisely detect leakage from an evaporated fuel discharge restraining system composed of a fuel tank, a canister and the like. CONSTITUTION:After an evaporated fuel discharge restraining system is evacuated so as to obtain a predetermined vacuum condition with the use of engine negative pressure, it is isolated from an engine air-intake device, and accordingly, leak-down check (whether leakage of evaporated fuel occurs or no is checked). At the time when a predetermined time T4 elapses after the predetermined leak-down check is initiated (completion of a vacuum process), an internal pressure PST (starting pressure) in the fuel tank is measured (steps S53, S54, S55), and an internal pressure PEND (completion pressure) in the fuel tank is measured at the time when a predetermined time T5 elapses after the time PST (S56, S57). With the use of the starting pressure PST and the completion pressure PEND, a variation rate PVARIB (= (PEND-PST)/T5) is calculated (step S58), and if the variation rate PVARIB exceeds a predetermined value, it is determined that leakage occurs.

12. 发明专利

JPS58126625A NEGATIVE PRESSURE SWITCH 失效
公开(公告)号：JPS58126625A
公开(公告)日：1983-07-28
申请号：JP916082
申请日：1982-01-23
申请人： HONDA MOTOR CO LTD
发明人： OOTAKA SHIYOUICHI , SUZUKI TAKESHI
IPC分类号： H01H35/34

13. 发明专利

JP2001214818A DIAPHRAGM TYPE PRESSURE CONTROL VALUE 失效
公开(公告)号：JP2001214818A
公开(公告)日：2001-08-10
申请号：JP2000028897
申请日：2000-02-01
申请人： HONDA MOTOR CO LTD
发明人： KOBAYASHI MAKOTO , ICHITANI TOSHIAKI , SUZUKI TAKESHI , YOKOYAMA KAZUTAKA
IPC分类号： F02M25/08 , F16K17/04 , G05D16/06
摘要： PROBLEM TO BE SOLVED: To minimize the permeation of an evaporating fuel while avoiding changes in surface stiffness of a rubber diaphragm in a diaphragm type pressure control valve. SOLUTION: The rubber diaphragm 26 dividing a evaporating fuel discharging passage 19 wherein evaporating fuel remains and an air communicating chamber 32 communicating to the atmosphere is opened by the differential pressure between the evaporating fuel chamber 17 and the atmosphere communicating chamber 32 to discharge the evaporating fuel in the evaporating fuel chamber 17 into a canister. A synthetic resin film 30 for preventing the permeation of the evaporating fuel is superimposed on one side surface of the diaphragm 26, thereby preventing the evaporating fuel in the evaporating fuel discharging passage 19 from leaking into the atmosphere communicating chamber 32. The synthetic resin film 30 has a cross section formed in an easily deformable bellows-shape, and the diaphragm 26 and the synthetic resin film 30 are not intimately contacted with each other to form a space 31, thereby easing the surface stiffness of the diaphragm 26 from being influenced by the synthetic resin film 30.

14. 发明专利

JP2001041112A EVAPORATED FUEL DISCHARGE PREVENTING DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2001041112A
公开(公告)日：2001-02-13
申请号：JP21107599
申请日：1999-07-26
申请人： HONDA MOTOR CO LTD
发明人： KITAMURA TORU , SUZUKI NORIO , KUROKAWA NAOHIRO , ISHIGURO TETSUYA , SUZUKI TAKESHI , ICHITANI TOSHIAKI
IPC分类号： F02M25/08 , F02D41/00
摘要： PROBLEM TO BE SOLVED: To prevent the change in fuel contents in a fuel tank, and the boiling under reduced pressure in a fuel pump, accurately control the air fuel ratio to a desired value, and ensure the smooth supply of fuel. SOLUTION: A fuel tank and an intake pipe of an internal combustion engine are connected by an evaporated fuel path, and a tank pressure control valve for opening or closing the evaporated fuel path, is provided. Whether the fuel temperature TGAS is a specified fuel temperature TGASH or more, or not is discriminated (S15), and when TGAS>=TGASH, the valve opening of the tank pressure control valve is forbidden (S18).

15. 发明专利

JP2000170622A FUEL TRANSPIRATION PREVENTING DEVICE OF ENGINE 失效
公开(公告)号：JP2000170622A
公开(公告)日：2000-06-20
申请号：JP34898598
申请日：1998-12-08
申请人： HONDA MOTOR CO LTD
发明人： SUZUKI TAKESHI , KOBAYASHI MAKOTO , ICHITANI TOSHIAKI
IPC分类号： F02M25/08 , F02M33/04 , F02M55/02 , F02M69/00
摘要： PROBLEM TO BE SOLVED: To reliably prevent fuel vapor allowed to flow through an injector and a delivery pipe from transpirating to the atmosphere regardless of the operation and the stop of the engine. SOLUTION: An injector 28 and a delivery pipe 35 are housed in an inner space 34 of a cover member 31 mounted on an intake manifold 18 of an engine E through seal rubber. The inner space 34 is communicated with an air cleaner 43 through a first ventilation passage 46 having a first opening and closing valve 48 and also communicated with an intake manifold 18 through a second ventilation passage 47 having a second opening and closing valve 49. In the operation of the engine E, the first and second opening and closing valves 48, 49 are opened, the inner space 34 is ventilated by outside air to be sucked by the intake manifold 18. In the stop of the engine E, the first and second opening and closing valves 48, 49 are closed, and the inner space 34 is hermetically sealed.

16. 发明专利

JPH1128941A EVAPORATED FUEL EMISSION PROOFING DEVICE 失效
公开(公告)号：JPH1128941A
公开(公告)日：1999-02-02
申请号：JP20074697
申请日：1997-07-10
申请人： HONDA MOTOR CO LTD
发明人： SUZUKI TAKESHI
IPC分类号： B60K15/01 , B60K15/04 , B60K15/077 , F02M25/08
摘要： PROBLEM TO BE SOLVED: To provide an evaporated fuel emission proofing device in which emission of evaporated fuel exceeding an allowable quantity from a fuel tank through a supply port into open air in supplying fuel can be securely prevented. SOLUTION: An ECU conducts an evaporated fuel emission proofing control process by an evaporated fuel emission proofing device. In this evaporated fuel emission proofing control process, it is determined that oil supply start conditions to a fuel tank 11 are satisfied as opening of a filler lid 27 is detected in accordance with getting on/off of a filler lid switch 29, a conduit selector valve 20 is controlled to be changed to a position to introduce evaporated fuel in the fuel tank 11 through a charge passage 18 to a canister 22, and a filler cap cover opening regulation means 30 is controlled to regulate opening of a filler cap 13 till a tank inner pressure Pt of the fuel tank 11 detected by a Pt sensor 16 becomes a specified pressure value Ptt or less.

17. 发明专利

JPH10309946A OIL FILLER PORT STRUCTURE 失效
公开(公告)号：JPH10309946A
公开(公告)日：1998-11-24
申请号：JP13446397
申请日：1997-05-09
申请人： HONDA MOTOR CO LTD
发明人： SUZUKI TAKESHI , ICHITANI TOSHIAKI , UDO HAJIME
IPC分类号： B60K15/04
摘要： PROBLEM TO BE SOLVED: To provide an oil filler port structure that maintains the sealing ability of a sealing member in an oil filler port for a longer period. SOLUTION: An oil filler port 1 comprises a larger-diameter part 1a on the opened side and a smaller-diameter part 1b on the back side. The larger- diameter part normally holds therein a sealing member 9 pressed upward by the elastic force of a spring 12. When the nozzle of a feeder gun is inserted in the port into engagement with an engaging member 10 and is further pressed to the back, the sealing member together with the nozzle slides to the smaller- diameter part where its periphery 9c is constricted by the port inner periphery and its nozzle through hole 9a is contracted in diameter consequently to seal the nozzle periphery. During its further insertion down to the back of the port for the purpose of opening a switching valve 4, the nozzle is moved together with the sealing member, which state prevents the sealing member being sealing the nozzle periphery from being worn out thereby. When pulled out after oil filling, the nozzle is moved up to the larger-diameter part together with the sealing member and is then pulled out of the sealing member after the release of the nozzle periphery from the sealed state, which setup prevents the sealing member from tearing by inversion.

18. 发明专利

JPH10236172A FUEL TANK AND FIXING DEVICE THEREOF 失效
公开(公告)号：JPH10236172A
公开(公告)日：1998-09-08
申请号：JP5426997
申请日：1997-02-24
申请人： HONDA MOTOR CO LTD
发明人： FUJINO RYUJI , SUZUKI TAKESHI
IPC分类号： B60K15/03 , B60K15/063 , F02M37/00
摘要： PROBLEM TO BE SOLVED: To provide a fuel tank whose outer surface is covered with soft heat insulator and is capable of being fixed completely on a vehicle or the like, and fix the fuel tank covered with soft heat insulator on the vehicle or the like. SOLUTION: A fuel tank 1, which is constituted of the first heat insulator 2 (e.g. polyurethane) of relatively soft material and almost the whole of which is covered, is provided with the second heat insulator 3 (e.g. ceramic, silicone rubber) of harder material than the first heat insulator 2, disposed at an area with which the bottom surface 10 of a vehicle body and a tank band 11 are brought into contact. The tank band 11 is fixed on the lower surface 10 of the vehicle body, and the fuel tank 1 is supported from the downward direction and fixed on the lower surface 10 of the vehicle body.

19. 发明专利

JPH08121263A EVAPORATING FUEL TREATMENT DEVICE 失效
公开(公告)号：JPH08121263A
公开(公告)日：1996-05-14
申请号：JP27994094
申请日：1994-10-19
申请人： HONDA MOTOR CO LTD
发明人： SUZUKI TAKESHI , YAMAZAKI KAZUMI , NAKAJIMA TATEAKI , HORIUCHI MASAAKI
IPC分类号： F02M25/08 , F02M37/00
摘要： PURPOSE: To prevent the collection of liquid fuel in a second pressure chamber by providing a pressure corresponding valve at a higher position than that of a pressure take-out port and providing a pressure take-in port at a lowermost section of the second pressure chamber in an evaporating fuel treatment device provided with the pressure corresponding valve having a first pressure chamber and the second pressure chamber on the halfway of an evaporating fuel passage. CONSTITUTION: Since pressure in the vicinity of a pressure take-out port 22 is reduced down to atmospheric pressure when a cap 41 is removed to supply oil, pressure in a second pressure chamber 27 of a diaphragm valve 23 is reduced below pressure in a first pressure chamber 26, and a valving element 33 is displaced in one direction to open an outlet 32. Consequently, a large amount of evaporating fuel generated in a fuel tank 20 is supplied to a canister 30 through a passage 28, the first pressure chamber 26, and a passage 29. On this occasion, since the diaphragm valve 23 is at a higher position than that of the pressure take-out port 22 and a pressure take-in port 36 of the second pressure chamber 27 is provided at a lowermost section of the second pressure chamber 27, fuel which flows into the second pressure chamber 27 returns to the fuel tank 20 through the pressure take-in port 36.

20. 发明专利

JPH06249086A FUEL VAPOR PROCESSOR 失效
公开(公告)号：JPH06249086A
公开(公告)日：1994-09-06
申请号：JP3881293
申请日：1993-02-26
申请人： HONDA MOTOR CO LTD
发明人： YAMAZAKI KAZUMI , SUZUKI TAKESHI , WATANABE HIDEO
IPC分类号： F02M25/08
摘要： PURPOSE:To dispense with a bypass pipe and bypass valve by setting one of a plurality of check valves to the opened condition while an atmosphere release closing valve is closed and a purge controlling valve is opened. CONSTITUTION:A purge system consisting of first-fourth vapor pipes 3, 5, 9, 14, a plurality of check valves 45, 49, 53, a canister 6 and purge controlling valve 11 is provided between the upper part of a fuel tank 2 and an intake pipe 13 of an engine 12. Further, an atmosphere release switch valve 8 for opening and closing an atmosphere release port of the canister 6 is additionally attached to the canister 6 and an internal pressure sensor 17 is additionally attached to the fuel tank 2 to detect abnormalities in the device according to a change in a pressure signal from the internal pressure sensor 17. Particularly, one check valve 53 of a plurality of check valves 45, 49, 53 is opened while an atmosphere switch closing valve 8 is closed and a purge controlling valve 11 is opened. Bypass valves like a solenoid valve or the like can be omitted only by providing a plurality of check valves 45, 49, 53.

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