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11. 发明专利

JPH0932929A CYLINDER HEAD GASKET FOR ENGINE 失效
公开(公告)号：JPH0932929A
公开(公告)日：1997-02-07
申请号：JP18532395
申请日：1995-07-21
申请人： KUBOTA KK
发明人： NAGAHAMA MASAHIRO , UMEDA YUZO , MANBA SHUNICHI , YOSHIDA KOZO
IPC分类号： F16J15/08
摘要： PROBLEM TO BE SOLVED: To allow a multipurpose application and extend durability by drilling a coupling hole through a gap seal part, internally coupling a bore seal part to the hole detachably, and keeping the bore seal part changeable to another seal part. SOLUTION: A gasket 10 is used in such a state as pressed and clamped in a gap between the opposed faces of a cylinder head 1 and a cylinder block 2. An annular bore seal part 5 faced to the internal space 4 of a cylinder and a remaining gap seal part 6 are formed out of separate parts. In addition, a coupling hole 7 is drilled through the gap seal part 6, and the bore seal part 5 is internally coupled to the hole 7 detachably, thereby allowing the bore seal part 5 to be changed to another bore seal. Furthermore, single type is prepared for the gap seal part 6, and the bore seal parts 5 of different inner diameter 9 for every plural type of engines having a different bore are prepared. Thereafter, the corresponding bore seal part 5 is selected for every engine having a different bore 8, and coupled to the hole 7 of the gap seal part 6.

12. 发明专利

JPH08218874A WATER RETURN PIPE FOR WATER COOLING DEVICE FOR ENGINE 失效
公开(公告)号：JPH08218874A
公开(公告)日：1996-08-27
申请号：JP2853695
申请日：1995-02-17
申请人： KUBOTA KK
发明人： YAMASHITA KENJI , NAGAHAMA MASAHIRO , UMEDA YUZO , MANBA SHUNICHI , YOSHIDA KOZO
IPC分类号： F01P5/10 , F01P7/16 , F01P11/04
摘要： PURPOSE: To prevent water leakage in the connection spot of a water return pipe and to provide simple and low-cost constitution through reduction of the number of part items of the water return pipe. CONSTITUTION: The connection port 6a of a stud housing 6 and the connection port 1c of the pump inlet part 1a of the water pump 1 are interconnected through a water return pipe 8. The pipe main body 8a of the water return pipe 8 is formed of an L-shaped steel pipe and O-rings 17 are arranged at respective end parts. The end parts of the water return pipe 8 are respectively inserted in the connection ports 6a of the stud housing 6 and the connection port 1c of the pump inlet part 1a of the water pump 1 formed on a surface crossing the connection port 6a at right angles.

13. 发明专利

JPH08210153A GOVERNOR DEVICE OF DIESEL ENGINE 失效
公开(公告)号：JPH08210153A
公开(公告)日：1996-08-20
申请号：JP1893995
申请日：1995-02-07
申请人： KUBOTA KK
发明人： NAGAHAMA MASAHIRO , UMEDA YUZO , MANBA SHUNICHI , YOSHIDA KOZO
IPC分类号： F02D1/04 , F02B3/06 , F02D31/00
摘要： PURPOSE: To improve the responsiveness while engine stall is precluded during an ultra-low speed loaded operation of engine by strengthening the tension of a start spring. CONSTITUTION: A rack pin 6 is resiliently pressed to the fuel incremental side R by a governor spring 4 and start spring 3 of fork lever 1 and is pressed to the fuel decremental side L by the governor force G of a governor weight 8. A pinching force absorbing spring 9a to absorb the pin pinch force of the start spring 3 in a pin pinching groove 11 is furnished between the output end 2a of the fork lever 1 and a slider 10, and the rack pin 6 is pinched light by the output end 2a of the fork lever 1 and the pin pinching groove 11 in the slider 10.

14. 发明专利

JPH08200032A OIL OBSERVATION DEVICE OF ENGINE 失效
公开(公告)号：JPH08200032A
公开(公告)日：1996-08-06
申请号：JP734195
申请日：1995-01-20
申请人： KUBOTA KK
发明人： NAGAHAMA MASAHIRO , UMEDA YUZO , MANBA SHUNICHI , YOSHIDA KOZO
IPC分类号： F01M11/12
摘要： PURPOSE: To avoid an oil gauge from interference with a crankshaft without remodelling an engine body by making the lower part of an oil gauge projecting into a crank case abut against a boss part near the front part corner in the case. CONSTITUTION: The upper end 22b of a gauge guide 22 is directed obliquely upward forward between an alternator provided near one front side of a cylinder head 1 of an engine E and a muffler 6 provided on one side laterally above the cylinder head 1, while the halfway part 22c of the gauge guide is bent and disposed. The halfway bent part 22c of the gauge guide 22 is formed to be offset from the vertical axis of an incorporating hole 23 of a crank case 3 near the rear of the engine E as viewed from the side of the engine E. Thus, the lower part 21a of an oil gauge 21 projecting into the crank case 3 is adapted to abut against a boss part 26 of a lubricating oil path 25 formed near the inner front part corner of the crank case 3.

15. 发明专利

JPH07166838A DIRECT COUPLED EXHAUST SILENCER DEVICE FOR MULTICYLINDER ENGINE 失效
公开(公告)号：JPH07166838A
公开(公告)日：1995-06-27
申请号：JP31238993
申请日：1993-12-14
申请人： KUBOTA KK
发明人： NAGAHAMA MASAHIRO , UMEDA YUZO , MANBA SHUNICHI , YOSHIDA KOZO
IPC分类号： F01N1/08 , F02F11/00
摘要： PURPOSE:To prevent a noise from being generated due to generation of vibration in a lateral external side wall of a primary silencing chamber and to prevent charging efficiency from worsening in a combustion chamber due to a back pressure by making an exhaust flow smoothly flow in an expansion type silencing chamber. CONSTITUTION:A plurality of exhaust ports 3a, 3b... are opened to be arranged in a longitudinal direction to one side surface 2 in a machine wall of a multicylinder engine 1. A muffler 4, formed with an expansion type primary silencing chamber 5, is fixed to the one side surface 2 of the machine wall in a lateral external side of each exhaust port 3a, 3'b..., and each exhaust port 3a, 3b... is opened to appear in the primary silencing chamber 5, to open a primary silencing chamber outlet 6 to one end side part in a longitudinal direction of the primary silencing chamber 5. Each direction changing plate 8a, 8b... for smoothly changing a direction of each exhaust flow 7a. 7b..., jetted in to a lateral direction from each exhaust port 3a, 3b..., to a longitudinal direction toward the primary silencing chamber outlet 6, in the primary silencing chamber 5 of the muffler 4, is provided in a position corresponding to each exhaust port 3a, 3b....

16. 发明专利

JPH0711927A PRESSURE ADJUSTER FOR LUBRICATION OIL OF ENGINE 失效
公开(公告)号：JPH0711927A
公开(公告)日：1995-01-13
申请号：JP18073593
申请日：1993-06-25
申请人： KUBOTA KK
发明人： NAGAHAMA MASAHIRO , UMEDA YUZO , MANBA SHUNICHI , NAKAMURA TATSUYUKI , YOSHIDA KOZO
IPC分类号： F01M1/16
摘要： PURPOSE:To prevent the generation of chattering noise from a pressure adjuster. CONSTITUTION:A branch passage 16 is arranged to the press-feeding passage 6 of lubrication oil of an engine. A valve seat 19 and a valve chamber 20 are formed in order in the branch passage 16 and a ball valve body 22 inserted in the valve chamber 20 is elastically presed to the valve seat 19 closingly by a coil spring 23. Another coil spring 28 is arranged in parallel to the coil spring 23 and a contact clearance is arranged between the push-pressed end part 28b of that another coil spring 28 and the valve body 22. Thereby, the valve closing elastic pressure of the valve body 22 is changed on the way of lift.

17. 发明专利

JPH06330751A COMBUSTION CHAMBER PG AUXILIARY COMBUSTION TYPE ENGINE 失效
公开(公告)号：JPH06330751A
公开(公告)日：1994-11-29
申请号：JP14263293
申请日：1993-05-21
申请人： KUBOTA KK
发明人： NAGAHAMA MASAHIRO , UMEDA YUZO , MANBA SHUNICHI , NAKAMURA TATSUYUKI , YOSHIDA KOZO
IPC分类号： F02B19/08 , F02F3/26
摘要： PURPOSE:To prevent a cylinder head and the top of a piston head from contact with each other caused by the accumulation of carbon sludge while restraining the generation of the carbon sludge in a main combustion chamber. CONSTITUTION:A cylinder head 1 of an engine is provided with an auxiliary combustion chamber 2 which affords communication through a jet 3 provided in an eccentric position of the center of the cylinder between the auxiliary combustion chamber 2 and main combustion chamber 4. The top 5 of a piston head is formed with a segment recess 6 and the jet 3 is located adjacent to the initial end 7 of the segment recess 6. The initial end 7 of the segment recess 6 is formed in a position a near the outer periphery of the top 5 of the piston head to cover the rear side portion 8 in the jetting direction of the jet 3.

18. 发明专利

JPH0693885A SPEED GOVERNER FOR DIESEL ENGINE 失效
公开(公告)号：JPH0693885A
公开(公告)日：1994-04-05
申请号：JP12823893
申请日：1993-04-30
申请人： KUBOTA KK
发明人： YAMASHITA KENJI , YAMADA SHUICHI , FUJII SATOSHI , YOSHIDA KOZO , SHINOHARA YUJI
IPC分类号： F02D1/04 , F02B3/06
摘要： PURPOSE:To prevent the displacement of a quantity regulating rack at reassembling by providing a rack temporary fixing means on a fuel injection pump to set the fuel limiting position of the quantity regulating rack of a fuel injection pump, and temporarily fixing the rack in the fuel limiting position by the rack temporary fixing means. CONSTITUTION:A fuel injection pump 3 is inserted to a pump receiving chamber 9, and operated by the rising and lowering of a tappet 13. The fuel feed quantity is regulated by a regulating rack 4 interlocked to a speed governor lever 1. At the time of reassembling for maintenance, the quantity regulating rack 4 is situated in a proper fuel limit position 6 which was set at the beginning, and the quantity regulating rack 4 is temporarily fixed by a rack temporary fixing means 7. The fuel injection pump 3 is removed to perform maintenance, and, thereafter, it is assembled and connected to the quantity regulating rack 4. Even in case of such reassembling, the fuel limit position 6 of the quantity regulating rack 4 is prevented from being shifted from the original proper position.

19. 发明专利

JPH05332173A MECHANICAL GOVERNOR DEVICE OF ENGINE 失效
公开(公告)号：JPH05332173A
公开(公告)日：1993-12-14
申请号：JP16431592
申请日：1992-05-29
申请人： KUBOTA KK
发明人： NAGAHAMA MASAHIRO , OKAMOTO KAZUTOSHI , UMEDA YUZO , MANBA SHUNICHI , YOSHIDA KOZO
IPC分类号： F02D1/04 , F02D31/00
摘要： PURPOSE:To stop a fuel quantity regulating tool on a start increasing amount position so as to raise engine rotation rapidly by forming respective relating surfaces between a weight holder and a governor sleeve in precision finished surface respectively, and tightly sticking respective facing surfaces sandwithcing engine oil just after starting of an engine. CONSTITUTION:A governor weight 3 is pivotally supported slidably, in a weight holder 2 fixed on a governor shaft 1. A governor sleeve 4 is out-fit slidably in axial core direction while located adjacently to the weight holder 2. Force of a governor 5 outputted from the governor weight 3 is inputted to a governor lever 6, so that the governor sleeve 4 is push-pressed in direction apart from the weight holder 2. In the abovementional constitution, facing surfaces 7, 8 between the weight holder 2 and the governor sleeve 4 are formed in precision finished surface respectively. Respective facing surfaces 7, 8 are tightly stuck together by prescribed sticking force while being sandwitching engine oil.

20. 发明专利

JPH0510244A DETECTION OF PISTON TOP DEAD CENTER POSITION OF ENGINE 失效
公开(公告)号：JPH0510244A
公开(公告)日：1993-01-19
申请号：JP18550991
申请日：1991-06-28
申请人： KUBOTA KK
发明人： YOSHIDA KOZO
IPC分类号： F02B77/08 , F02D45/00 , F02P17/00 , G01H15/00 , G01M15/00 , G01M15/04
摘要： PURPOSE:To speedily detect the top dead center position of a piston of an engine and improve the position detection precision in detecting the top dead center position of the piston. CONSTITUTION:A piston 3 is inserted into the cylinder 2 of an engine 1, and a cylinder head 4 is fixed on the cylinder 2. An air vibrating means 6 and a vibration frequency detecting means 7 are set close to a combustion chamber 5 surrounded by the cylinder 2, piston 3, and the cylinder head 4. The air in the combustion chamber 5 is vibrated by the air vibrating means 6, operating the piston 3 in reciprocation in the vicinity of the top dead center. The frequency of the vibration is detected by the vibration frequency detecting means 7, and displayed on a vibration frequency display means 8.

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