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1. 发明专利

JPH07139445A FORCE FEED SYSTEM FUEL SUPPLY DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPH07139445A
公开(公告)日：1995-05-30
申请号：JP28966993
申请日：1993-11-19
申请人： KUBOTA KK
发明人： ITO MASAHIRO
IPC分类号： F02M37/00 , F02B3/06 , F02D1/02 , F02D41/04 , F02D41/06 , F02M55/02
摘要： PURPOSE:To prevent occurrence of engine stall by automatically releasing pressurizing of a fuel press-feeding means, and improving startability of an engine. CONSTITUTION:A fuel tank 2 of a diesel engine 1 is communicated with a fuel injection pump 6 through a fuel supply pipe 3, a fuel filtrator 4 and a feed pump 5. The feed pump 5 is driven by the diesel engine 1, and fuel in the fuel tank 2 is forcedly fed and supplied to the fuel injection pump 6. A fuel supply pipe 3 arranged between the feed pump 5 and the fuel injection pump 6 is connected to an accumulator 7 having a pressurizing means for pressurizing fuel and a holding means for holding the pressurizing means in a pressurizing preparation state H in a parallel manner. When the diesel engine 1 is started, the pressurizing means is operated from the pressurizing preparation state H to a pressurizing state S, for increasing the fuel press-feeding pressure in the fuel supply pipe 3 to a starting pressure Ps. During normal driving, the pressurizing means is operated to a pressurizing releasing state N, for lowering the fuel press-feeding pressure to a set value Pn.

2. 发明专利

JPH0719079A GOVERNOR FORCE TRANSMITTING DEVICE FOR CENTRIFUGAL SYSTEM GOVERNOR 失效
公开(公告)号：JPH0719079A
公开(公告)日：1995-01-20
申请号：JP18876893
申请日：1993-06-30
申请人： KUBOTA KK
发明人： AKEDA MASAHIRO , ITO MASAHIRO , OKAMOTO KAZUTOSHI , TSUJI SADAYA , YAMAMOTO NOBUHIRO , HAYATANI AKIRA
IPC分类号： F02D1/02 , F02D31/00
摘要： PURPOSE:To prevent sliding motional abrasion of an output part of a rotor and an input part of a governor lever by fitting the rotor around a protruding- retreating piece added to a governor shaft, and engaging a whirl-stop member projecting outside from the rotor with a locking part formed on the governor lever. CONSTITUTION:Governor weights 8 and a protruding-retreating piece 10 are added to a governor shaft 5 of an engine E. An output part 21 formed on the protruding-retreating piece 10 is connected to an input part 15 of a governor lever 13, and governor force F is transmitted to the governor lever 13. In this case, a bearing 24 and a rotor 20 are fitted in order around the tip part of the protruding-retreating piece 10, the rotor 20 is received by an outside lace 25 of the bearing 24. The output part 21 is formed in the tip part of the rotor 20, and an annular groove 27 is formed in the tip part of the protruding- retreating piece 10. A whirl-stop member 19 is passed penetratingly through the rotor 20, and this is engaged with the annular groove 27. The whirl-stop member 19 is projected outside, and is engaged with a locking part 22 formed in the vicinity of the input part 15.

3. 发明专利

JPH05312057A 失效
公开(公告)号：JPH05312057A
公开(公告)日：1993-11-22
申请号：JP14326592
申请日：1992-05-09
申请人： KUBOTA KK
发明人： AKEDA MASAHIRO , ITO MASAHIRO , YAMAMOTO NOBUHIRO , HAYATANI AKIRA
IPC分类号： F02D1/04 , F02D31/00
摘要： PURPOSE:To get rid of any local wear on an input surface of a governor shaft and thereby improve the extent of durability by constituting an orthogonal action surface of a governor weight so as to be shifted to an eccentric position in a way of separating from a turning shaft center of a weight driving shaft. CONSTITUTION:A weight support part 2 is installed tight in a weight driving shaft 1 of an engine E. A governor shaft 6 is supported on a shaft center part 7 of this weight driving shaft 1 free of rotation and movements. A governor weight 3 is supported on the weight support part 2 free of rocking motion. Then, a rocking shaft center 5 of the governor weight 3 is installed in a turning shaft center 7 of the weight driving shaft 1 in a noncrossing orthogonal form. A plane being orthogonal with the rocking shaft center 5 of the governor weight 3 and comprising an output part 4 of this governor weight 3 is imagined as an orthogonal action surface 8. This orthogonal action surface 8 is shifted to an eccentric position separated from the turning shaft center 7 of the weight driving shaft 1. Wear in an input surface 12 of the governor shaft 6 is dispersed over an overall length in the circumferential direction. Thus, any wear in the input surface of the governor shaft is eliminated and its durability is heightened enough.

4. 发明专利

JPH04321727A FUEL HEATING DEVICE FOR FUEL INJECTION PUMP FOR DIESEL ENGINE 失效
公开(公告)号：JPH04321727A
公开(公告)日：1992-11-11
申请号：JP11679091
申请日：1991-04-19
申请人： KUBOTA KK
发明人： ITO MASAHIRO , OKAMOTO KAZUTOSHI
IPC分类号： F02D1/02 , F02B3/06
摘要： PURPOSE:To raise the temperature of fuel just enough by defreezing gas oil frozen in a fuel injection pump at a cold time, raising the temperature, and setting the time of an off-delay timer. CONSTITUTION:It is constituted so that an electric heater 2 is provided along a fuel injection pump 1, the electric heater 2 is connected to a battery 4 through an off-delay timer 6 and a heater switch 3, and fuel in the fuel injection pump 1 is heated by generated heat of the electric heater 2 during the term from ON operation 5 of the heater switch 3 to the lapse of the setting time of the off-delay timer 6. In this case, a key switch 7 can be used as the heater switch 3 at the same time.

5. 发明专利

JPH0494411A OVERHEAT PREVENTING DEVICE FOR LIQUID-COOLED ENGINE 失效
公开(公告)号：JPH0494411A
公开(公告)日：1992-03-26
申请号：JP21002790
申请日：1990-08-07
申请人： KUBOTA KK
发明人： ITO MASAHIRO
IPC分类号： F02B77/08 , F01P11/00 , F01P11/18 , F02B3/06 , F02D45/00
摘要： PURPOSE:To quickly prevent the overheat of an engine and eliminate the seizure of the engine by lifting the float of a reservoir tank to the abnormal liquid level into contact with an engine overheat detecting means to operate it when the engine is going to be overheated. CONSTITUTION:When a Diesel engine E is going to be overheated, a cooling liquid in a radiator 1 is expanded to open the pressure valve 13 of a pressure cap 2, it continuously flows into the tank chamber 5 of a reservoir tank 3, and a float 6 is abnormally lifted beyond the upper limit B of the proper liquid area A. The lifted float 6 closes the mouth section 16 of the reservoir tank 3 to prevent the cooling water from flooding, and it presses a pressure input section 18 and closes the normally opened switch 22 of an engine overheat detecting means 7. When the switch 22 is turned on, an electric circuit 20 is excited, the solenoid 23 of an engine overheat preventing means is operated, the injection rack 26 of a fuel injection pump 25 is moved to the no-injection position, and an engine E is automatically stopped.

6. 发明专利

JPH0734919A GOVERNOR FORCE TRANSMISSION DEVICE OF CENTRIFUGAL GOVERNOR OF ENGINE 失效
公开(公告)号：JPH0734919A
公开(公告)日：1995-02-03
申请号：JP20270593
申请日：1993-07-23
申请人： KUBOTA KK
发明人： AKEDA MASAHIRO , ITO MASAHIRO , OKAMOTO KAZUTOSHI , TSUJI SADAYA , YAMAMOTO NOBUHIRO , HAYATANI AKIRA
IPC分类号： F02D1/04 , F02D31/00
摘要： PURPOSE:To suppress wear in a governor force transmission section from a governor pin to a governor lever so as to increase governor precision. CONSTITUTION:Governor force GF generated due to oscillation of a governor weight 2 can be transmitted to a governor lever 4 via a governor pin 3. A bearing for receiving 8 is provided in an input section 6 of the governor lever 4 via a support shaft 10. A flat face on which the governor pin 3 is pressed faces an outer race 30 of the bearing 8 at an eccentric position in such a manner that it can be in contact with the outer race 30. As a consequence, rotational energy of the governor pin 3 is absorbed due to the action of a rolling body of the bearing 8, and friction force of rotation does not reach the governor lever 4. As a result, wear in a transmission section is suppressed and governor precision can be improved.

7. 发明专利

JPH06221201A GOVERNER FORCE TRANSMISSION DEVICE OF CENTRIFUGAL GOVERNER 失效
公开(公告)号：JPH06221201A
公开(公告)日：1994-08-09
申请号：JP2752793
申请日：1993-01-22
申请人： KUBOTA KK
发明人： AKEDA MASAHIRO , ITO MASAHIRO , OKAMOTO KAZUTOSHI , YAMAMOTO NOBUHIRO , HAYATANI AKIRA
IPC分类号： F02D31/00
摘要： PURPOSE:To suppress disorder of transmission of a governer force from a projecting/retreating piece to a governer lever caused by abrasive deformation and maintain governer accuracy at a high level by extremely decreasion abra sion caused by sliding motion between an output part and an input part since a rotor is not rotated in relation to the governer lever. CONSTITUTION:A rotor 20 is rotatably provided on the top end of a projecting retreating piece 10 attaded to a governer shaft 5, in a governer force transmission device of a centrifugal type governer. An output part 21 is formed on the rotor 20, and then brought in contact with the input part 15 of the governer lever 13. A rotation stopping means S is provided, and the rotation with against to the input part 15 of the governer lever 13 is suppressed.

8. 发明专利

JPH04321728A FUEL HEATING DEVICE FOR FUEL INJECTION PUMP FOR DIESEL ENGINE 失效
公开(公告)号：JPH04321728A
公开(公告)日：1992-11-11
申请号：JP11679191
申请日：1991-04-19
申请人： KUBOTA KK
发明人： YAMASHITA KENJI , ITO MASAHIRO , OKAMOTO KAZUTOSHI
IPC分类号： F02D1/02 , F02B3/06
摘要： PURPOSE:To raise the temperature of fuel just enough by defreezing gas oil frozen in the fuel injection pump at a cold time, raising the temperature accord ing to the temperature of the fuel injection pump. CONSTITUTION:It is constituted so that an electric heater 2 is provided along a fuel injection pump 1, the electric heater 2 is connected to a battery 4 through an electrification control device 6 and a heater switch 3, a temperature sensor 8 is provided on the fuel injection pump 1, and at detecting the temperature of the fuel injection pump 1 under the prescribed setting temperature with the temperature sensor 8, electrifying the electric heater 2 from the battery 4 is performed with the electrification control device 6, at detecting the temperature of the fuel injection pump 1 over the prescribed setting temperature, electrifying the electric heater 2 from the battery is stopped with the electrification control device 6.

9. 发明专利

JPH04237863A FUEL FEEDER FOR DIESEL ENGINE 失效
公开(公告)号：JPH04237863A
公开(公告)日：1992-08-26
申请号：JP1950991
申请日：1991-01-19
申请人： KUBOTA KK
发明人： YAMASHITA KENJI , ITO MASAHIRO , OKAMOTO KAZUTOSHI
IPC分类号： F02M31/125 , F02B3/06 , F02M37/00
摘要： PURPOSE:To thaw the frozen fuel in the case where fuel is frozen in a part in a fuel feeder at cold climate, and thereby an engine fails to start. CONSTITUTION:A fuel return passage 5 of a fuel feeder is short-circuited to a fuel feed passage at a short passage 6. With short-circuiting, fuel is circulated around through those of short passage 6, fuel feed passage 2, fuel filter 3, fuel injection pump 4, fuel return passage 5 and short passage 6 in order, thus a short circulating passage 8 is formed in this way. Then, a temperature sensor 0, an electric heater 10 and an electric motor 11 are all installed in this short circulating passage 8, and when the detected temperature of this temperature sensor 9 is less than the setting temperature, the heater 10 and the pump 11 are operated via a control unit 12. Thus, the fuel is circulated around as heating it by means of electric control like this, through which frozen fuel is thawed. With this constitution, the frozen fuel is thawable earlier in a simple manner.

10. 发明专利

JPH0491328A FUEL CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPH0491328A
公开(公告)日：1992-03-24
申请号：JP20430190
申请日：1990-07-31
申请人： KUBOTA KK
发明人： OKAMOTO KAZUTOSHI , ITO MASAHIRO , SHINOHARA YUJI , NAKANO JUNZO
IPC分类号： F02D1/04 , F02B3/06
摘要： PURPOSE:To improve start-up performance of an engine at the time of starting operation by arranging a fuel regulator which is operated projectably by lubricating oil pressure of the engine corresponding to the oscillating range of a spring lever in a governor device. CONSTITUTION:A control rack 6 is regulated in its movement by balance of a governor force (G) acting to a fork lever 17 and spring force (S) of a governor spring 9 acting to a spring lever 18. In a governor device 1, a fuel regulator (L) is projected from the light side wall 10 of a gear case 15 toward the spring lever 18. The spring lever 18 is stopped by the fuel regulator (L), so that only the fork lever 17 is transfered forcibly toward a fuel increasing side by spring force of a start spring 11 at the time of starting of an engine. The fuel regulator (L) consists of a retractable spring type single acting hydraulic cylinder 21, and advance quantity of a projection part 28 is controlled by controlling solenoid valves 25, 26 provided with a lubricating oil flow-in passage 23 and a lubricating oil flow-out passage 24 communicating respectively with an oil pressure chamber 22 of the cylinder 21.

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