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1. 发明专利

JPH10274024A BREATHER DEVICE FOR ENGINE 失效
公开(公告)号：JPH10274024A
公开(公告)日：1998-10-13
申请号：JP7639297
申请日：1997-03-28
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F01M13/00 , F01M13/04
摘要： PROBLEM TO BE SOLVED: To effectively perform oil separation and prevent oil leakage in a crank case. SOLUTION: Blowby gas G inside a crank chamber 2 is introduced into an oil separation device 10 from a gas introduction port. An exhaust means is communicated with a gas outlet port 15 of the oil separation device 10. Negative pressure is generated in the oil separation device 10 and the crank chamber 2 by means of a forcibly exhausting means. Pulsative motion is eliminated due to the negative pressure in the oil separation device 10. The blowby gas G is smoothly flowed without complicated motion in the oil separation device 10. Oil separation is also smoothly performed by means of an oil separation member 23. Due to the negative pressure in the crank chamber 2, oil leakage is prevented.

2. 发明专利

JPH0719010A PIVOTALLY SUPPORTING DEVICE FOR BOAT TYPE ROCKER ARM IN VALVE SYSTEM OF OVERHEAD VALVE ENGINE 失效
公开(公告)号：JPH0719010A
公开(公告)日：1995-01-20
申请号：JP18767393
申请日：1993-06-29
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F01L1/18
摘要： PURPOSE:To lead lubricating oil easily so as to reduce wear by forming the pivotally supporting tool of a boat type rocker arm in a hollow shape to be elastically deformable, generating a clearance at the time of closing a valve, and making all surfaces to come in surface contact by elastic deformation at the time of opening the valve, in the case of a sliding part for oscillation provided between the receiving surface of the pivotally supporting tool and the pushing-hitting surface of the boat type rocker arm. CONSTITUTION:A supporting column bolt 2 is erected in a rocker arm chamber 1 from a cylinder head 17 upwardly, and a pivotally supporting tool 3 is fit to the supporting column bolt 2, and it is supported by a supporting nut 4, and a supporting frame 4a. A boat type rocker arm 6 manufactured by sheeting abuts on the pivotally supporting tool 3, a push rod 11 abuts on a right end input part 7, and an intake/exhaust valve 12 abuts on a left end output part 8. The pivotally supporting tool 3 is formed in a hollow shape, and enabled elastic deformation. In the sliding part 13 for oscillation provided between the receiving surface 5 and the pushing-hitting surface 10 of the boat type rocker arm 6, space is generated on a circumferential part 13a at the time of valve closing, and the all surface thereof abuts by elastic deformation at the time of valve opening. Lubricating oil is led smoothly with pumping action by means of elastic deformation, and attack load is absorbed so as to prevent wear.

3. 发明专利

JPH0681733A OIL TANK TYPE AIR CLEANER FOR ENGINE 失效
公开(公告)号：JPH0681733A
公开(公告)日：1994-03-22
申请号：JP25409992
申请日：1992-08-28
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F02M35/022 , F02M35/024 , F02M35/026
摘要： PURPOSE:To improve the filtration efficiency of an air cleaner with dust of small mass caught to be flowed out, by circulating outside air in the oil tank type air cleaner of an engine to push out dust of large mass and also generating atomized oil. CONSTITUTION:An oil tank 3 is detachably mounted on the lower part of the case main body 2 of an air cleaner 1. An outside air inversion chamber 4, a filter chamber 5, and a purified air outlet chamber 6 are communicatedly arranged in order from the lower side in the case main body 2, and an outside air intake port 7 on the upper part of the case main body 2 and the outside air inversion chamber 4 are communicated by an outside air intake path 8 longitudinally communicated in the center part of the case main body 2. A guiding vanes 9 for circulating outside air are provided in the outside air intake path 8, and also an outside air inverting pan 10 having an upward pan state is faced to the outlet of the ouside air intake path 8 to be provided on the middle part of the oil tank 3. The pan bottom part 11 of the outside air inverting pan 10 is dipped in oil in the oil tank 3, and an oil supply hole 12, for supplying oil in the oil tank 3 onto the outside air inverting pan 10, is provided on the pan bottom part 11.

4. 发明专利

JPH0495671A OIL SEALING DEVICE FOR ENGINE ROTATION SHAFT 失效
公开(公告)号：JPH0495671A
公开(公告)日：1992-03-27
申请号：JP21483190
申请日：1990-08-13
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F02F11/00 , F16C33/72 , F16J15/3232 , F16J15/3244
摘要： PURPOSE:To raise sealing performance, lessen abrasion, and improve durability of a device by making constitution in which a seal lip contacts the inner wall surface of a boss part in a casing to be rotated. CONSTITUTION:A seal main body 11 having a front circular shape, a bank part 12 arranged on the front side of the seal main body 11, and a seal lip 13 are integratedly formed in a sealing member 10. The seal main body 11 is on the inner side of a casing 1, and is concentrically rotatably fixed to a rotation axis 4 with a pressure collar 14. The bank part 12 is composed of a ringlike bank part 12a in the middle part and a spiral bank part 12b spirally arranged on the outer side, has a gentle inclination angle toward a rotation radius outer side, and is elastically deformationally formed. Consequently when inner pressure in the casing 1 is raised, the band part 12 is elastically deformed in an axis core direction, the seal lip 13 is strongly press-contacted to the inner wall surface 2a of a boss part to make strong sealing, and also when the inner pressure is low and high speed rotation is made, the contact pressure of the seal lip 13 to the inner wall surface 2a of the boss part is lowered, however sealing capability is retained.

5. 发明专利

JP2838471B2 失效
公开(公告)号：JP2838471B2
公开(公告)日：1998-12-16
申请号：JP18767393
申请日：1993-06-29
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F01L1/18

6. 发明专利

JPH0711918A PIVOTALLY SUPPORTING DEVICE FOR BOAT FORM ROCKER ARM OF VALVE SYSTEM OF OVERHEAD ENGINE 失效
公开(公告)号：JPH0711918A
公开(公告)日：1995-01-13
申请号：JP18073993
申请日：1993-06-25
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F01L1/12 , F01L1/18
摘要： PURPOSE:To improve the abrasion resistance of the pivotally supporting device of a boat form rocker arm by making the protruded curved abutting surface of a pivotally supporting tool abut on the recessed curved receiving surface of a receiving tool from a lower side to make the pivotally supporting tool be swingable to a strut by an oscillation allowance gap. CONSTITUTION:The protruded curved abutting surface 20 of a pivotally supporting tool 3 is made to abut on the recessed curved receiving surface 21 of a receiving tool 4 from a lower side to make the pivotally supporting tool 3 be swingable to a strut 2 by an oscillation allowance gap 23. Consequently sliding following the oscillation of a boat form rocker arm 6 can be scattered to lower side oscillating rubbing part 25 facing the boat form rocker arm 6 of the pivotally supporting tool 3 and an upper side oscillating rubbing part 22 facing the receiving tool 4 to shorten a sliding distance in the oscillating rubbing part 25 between the boat form rocker arm 6 and the pivotally supporting tool 3. As a result, the abrasion between the boat form rocker arm 6 and the pivotally supporting tool 3 can be reduced to improve the abrasion resistance of the pivotally supporting device of the boat form rocker arm 6.

7. 发明专利

JPH04116214A SOLID RECOVERY DEVICE FOR EXHAUST OF DIESEL ENGINE 失效
公开(公告)号：JPH04116214A
公开(公告)日：1992-04-16
申请号：JP23656290
申请日：1990-09-04
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F01N3/02 , F02B3/06
摘要： PURPOSE:To recover solids smoothly by providing such a mechanism as sticking the solids in exhaust to blades while the solids being passed through narrow and small solid scraping off gaps formed between inner and outer blades, and changing the dimensions or the number of the blades. CONSTITUTION:During operation of a diesel engine E, exhaust flows in from the exhaust inlet 6 of a solid recovering means 2 into an exhaust flowing chamber 3 after passing through an exhaust 1 and an exhaust intake pipe 23, and discharged to outside air after passing through an exhaust guide port 11, a solid catching chamber 4, an exhaust outlet 7, and an exhaust flowing out passage 25. In the solid catching chamber 4, exhaust passes through narrow and small solid scrapping off gaps 15 formed between inner blades 13 and outer blades 14. Solids in exhaust are stuck and piled on the inner and outer blades 13, 14 while passing through the scrapping off gaps 15. It is thus possible to recover soot smoothly according to the dimensions of the engine E, or the length of operating period, by changing the dimensions or the number of the blades.

8. 发明专利

JPH0491327A FUEL CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPH0491327A
公开(公告)日：1992-03-24
申请号：JP20430090
申请日：1990-07-31
申请人： KUBOTA KK
发明人： OKAMOTO KAZUTOSHI , ITO MASAHIRO , MATSUDA YASUSHI , SHINOHARA YUJI , NAKANO JUNZO
IPC分类号： F02D1/02 , F02B3/06 , F02D1/04 , F02D45/00
摘要： PURPOSE:To reduce an exhaust gas temperature efficiently by providing such a constitution that a fuel regulator is operated when a higher temperature than a prescribed value is detected by a temperature detecting sensor, and the control rack of a fuel injection pump is transferred toward a fuel reducing side. CONSTITUTION:A fuel regulator (L) consists of a stepping motor 22 is projected from the light side wall 10 of a gear case 15 corresponding to the oscillating range of a fork lever 17, while a temperature detecting sensor 24 is arranged on the outer circumference of the exhaust manifold 23 so as to detect the circumference surface temperature of an exhaust manifold 23. A signal of temperature detected by the temperature detecting sensor 24 is inputted into a microcomputer 25, and compared with a setting temperature in the microcomputer 25. When the detected temperature is at the setting temperature or more, the stepping motor 22 is operated so as to transfer and operate the operating part 28 of the stepping motor 22 for a quantity corresponding to the circumferential surface temperature of the manifold 23. It is thus possible to transfer forcibly the fork lever 17 of a governor device 1 toward a fuel reducing side so as to regulate the oscillating range to a fuel increasing side.

9. 发明专利

JPH10274025A BREATHER DEVICE FOR ENGINE 失效
公开(公告)号：JPH10274025A
公开(公告)日：1998-10-13
申请号：JP7639397
申请日：1997-03-28
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F01M13/00 , F01M13/04
摘要： PROBLEM TO BE SOLVED: To perform further effective oil separation with a simple structure. SOLUTION: Blowby gas G in a crank chamber 2 is introduced into an oil separation device 10 from a gas introduction port 11. Lubricating oil O is stored in the oil separation device 10. Oil separation is performed by supplying bubbled blowby gas G introduced from the gas introduction port 11 into the oil O. After oil separation, the blowby gas G is discharged from the gas outlet port 15.

10. 发明专利

JPH04116215A SOLID MATTER RECOVERY DEVICE FOR EXHAUST OF DIESEL ENGINE 失效
公开(公告)号：JPH04116215A
公开(公告)日：1992-04-16
申请号：JP23656090
申请日：1990-09-04
申请人： KUBOTA KK
发明人： NAKANO JUNZO
IPC分类号： F01N3/02 , F01N3/06 , F02B3/06
摘要： PURPOSE:To eliminate blinding by solids so as to suppress any increase in an exhaust pressure, by arranging an exhaust flow chamber through which exhaust flows and a solid recovery chamber for catching the solids, separately in parallel to an exhaust passage, in the case of a solid recovery means. CONSTITUTION:In a solid recovering means 2, an exhaust flow chamber 3 is formed in its central inner chamber, and a solid catching chamber 4 is formed on the outer circumference side thereof through a compartment wall 5. The exhaust flow chamber 3 and the solid catching chamber 4 are arranged in parallel to an exhaust pipe 1. Exhaust flows from the exhaust pipe 1 into the exhaust flow chamber 3 of the solid recovering means 2 to be discharged to the outside air after passing through an exhaust outlet 7. Soot is separated from exhaust subjected to centrifugal force by rotation of a spiral blade 14, while soot grains having large mass are subjected to a large centrifugal force and caught from a solid intake port 11 into the solid catching chamber 4. It is thus possible to smoothly eliminate the soot in exhaust without increasing exhaust pressure.

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