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91. 发明专利

JPH10196387A SMALL VEHICLE 失效
公开(公告)号：JPH10196387A
公开(公告)日：1998-07-28
申请号：JP367897
申请日：1997-01-13
申请人： YAMAHA MOTOR CO LTD
发明人： KAWAI KIYOSHI , MATSUMOTO TOMOHITO
IPC分类号： B60K17/04 , B60K5/00 , B60K17/00 , F02B61/06 , F02B75/16 , F02B77/00 , F02F7/00 , F16H57/035 , F16M1/021 , F16H57/02
摘要： PROBLEM TO BE SOLVED: To increase the degree of freedom of an engine position in a vehicle body and facilitate ensurance of a driver area, and mount an engine in a position, wherein vehicle weight distribution is excellently effected, without impairing a sprocket position on the proper drive wheel side and the driver position. SOLUTION: A small vehicle loads an engine 40 on a car body, a power from a crankshaft 53 pivotally supported at the crank cases 51 and 52 of an engine 40 is fetched by a power fetching shaft 41. A power is transmitted to the drive wheel side from a drive sprocket 42 arranged on the power fetching shaft 41. In this case, the vicinity of a crank case part 51a to cover the crank web 53a of the crankshaft 53 is recessed to form a space 99 and the drive sprocket 42 is arranged in the space 99.

92. 发明专利

JPH10115221A AIR-COOLED ENGINE 失效
公开(公告)号：JPH10115221A
公开(公告)日：1998-05-06
申请号：JP26846896
申请日：1996-10-09
申请人： HONDA MOTOR CO LTD
发明人： HIRANO TOMOHIRO , KATAYAMA SHINJI , NISHIDA TAKAO
IPC分类号： F02B63/00 , F01P5/02 , F01P5/06 , F02B75/02 , F02B75/16 , F02F1/00 , F02F1/32
摘要： PROBLEM TO BE SOLVED: To improve cooling effect in an air-cooled engine without enlarging a cooling fan and a shroud. SOLUTION: In an air-cooled engine, a cooling fan 20 is arranged on one end of a crank shaft 12 supported by a crank case 7, and cooling air generated by the fan 20 is introduced to an outer periphery of a cylinder block 6 by means of a shroud 25. An auxiliary cooling fan 27 is arranged on the other end of the crank shaft 12. Cooling air generated by the auxiliary fan 27 is introduced to an outer periphery of the cranks case 7 by means of an auxiliary shroud 28. Cooling of the crank case 7 is effectively performed in respect to the cylinder block 6 by means of these shrouds.

93. 发明专利

JPH1082346A ENGINE FOR MOTORCYCLE HAVING HEAD COVER 失效
公开(公告)号：JPH1082346A
公开(公告)日：1998-03-31
申请号：JP23663096
申请日：1996-09-06
申请人： YAMAHA MOTOR CO LTD
发明人： ATSUMI TOMOYASU
IPC分类号： F02B61/02 , F02B75/02 , F02B75/16 , F02F1/04 , F02F1/24 , F02F7/00 , F16M1/026
摘要： PROBLEM TO BE SOLVED: To radiate the hot air of a cylinder head to the outside, and also improve the permeability of inner sides of head covers, by forming an opening part opened toward the front, upper and rear parts of the cylinder head, between the right and left head covers with which the upper part of the cylinder head is covered. SOLUTION: First and second head covers 75, 76 are attached to a cylinder head 30 in which an intake/exhaust port is formed so that an engine 27 is made to look like large, and the upper part of a camshaft storage part 36 is covered with these head covers 75, 76. At this time, the head covers 75, 76 are arranged by being separated from each other, an opening part 98 opened to the front, upper and rear parts of the cylinder head 30, is formed, and a space among the cylinder head 30 and the head covers 75, 76 is opened to the atmosphere by this opening part 98. Also, an extended part 77 extended downward is formed in the bottom wall of the head cover 76, a plug lead-through opening is formed in the position of this extended part 77, where is opposite to an ignition plug 39, and cooling fins 79... are integrally formed on the peripheral surface of the extended part 77.

94. 发明专利

JPH1047030A ENGINE FOR OUTBOARD MOTOR 失效
公开(公告)号：JPH1047030A
公开(公告)日：1998-02-17
申请号：JP20043996
申请日：1996-07-30
申请人： SUZUKI MOTOR CO
发明人： MISHIMA SHUICHI
IPC分类号： B63H20/00 , F01M1/06 , F01M11/03 , F02B61/04 , F02B67/00 , F02B75/02 , F02B75/16
摘要： PROBLEM TO BE SOLVED: To improve mounting and demounting ability of an oil filter, to improve the degree of freedom of the oil filter mounting position, and to improve layout properties for the oil passage connected to an oil filter. SOLUTION: An engine 3 for an outboard motor is vertically mounted on an outboard motor so that a crank shaft 6 is pointed in a vertical direction and an oil filter 66 to purify oil is removably arranged at the outside of the engine case 23 thereof. In this case, the mounting and demounting direction of the oil filter 66 is extended in a vertical direction. Further, an oil filter housing 62 to contain the oil filter 66 is integrally formed at the lower case 23a of the engine case 23 constituted in a vertical division system. The height H of the upper opening part of the oil housing 62 is increased to a value higher than that of the division surface P of the engine case 23.

95. 发明专利

JPH09287474A CRANKCASE-SUPERCHARGED ENGINE 失效
公开(公告)号：JPH09287474A
公开(公告)日：1997-11-04
申请号：JP10169296
申请日：1996-04-23
申请人： YAMAHA MOTOR CO LTD
发明人： TAGAMI ATSUSHI
IPC分类号： F02B33/44 , F01M13/04 , F02B61/02 , F02B67/00 , F02B75/02 , F02B75/16 , F02F1/24
摘要： PROBLEM TO BE SOLVED: To reduce adverse effects on an engine by reducing the inflow amount of lubricating oil into a combustion chamber to prevent the increase of oil consumption. SOLUTION: A crankcase-supercharged engine leads fresh air pressurized in a crankcase 21c through a pressurized-air intake passage, an intake port and an intake valve at the end of the intake port into a combustion chamber, and emits exhaust gas from the combustion chamber through an exhaust valve, an exhaust port and an exhaust passage into the atmosphere, while supplying lubricating oil to sliding areas between a cylinder C and a piston 24. A pressurized-fresh air outlet of the crankcase 21c to the pressurized-air intake passage is provided in the upper part of the crankcase 21c, above the lowermost part at the connection between the cylinder C and the crankcase 21c.

96. 发明专利

JPH09287469A SUPERCHARGING ENGINE-MOUNTED VEHICLE 失效
公开(公告)号：JPH09287469A
公开(公告)日：1997-11-04
申请号：JP10082796
申请日：1996-04-23
申请人： YAMAHA MOTOR CO LTD
发明人： TAGAMI ATSUSHI , KURANISHI MASAHISA
IPC分类号： F02B33/44 , F02B61/02 , F02B61/06 , F02B67/00 , F02B75/02 , F02B75/16 , F02F1/24 , F02M35/10 , F02M35/16
摘要： PROBLEM TO BE SOLVED: To raise a filling efficiency of a combustion chamber and to improve engine performance and durability by arranging a crank chamber intake inlet on the upper side of a crank shaft, and arranging a crank chamber discharging port on the lower side of the crank shaft, in a supercharging engine-mounted vehicle in which a cylinder is forward slantly arranged. SOLUTION: In a scooter type motorcycle, an unit swing type engine unit 11 is mounted, the unit 11 comprises an engine main body and a rear wheel transmission gear 13. In the engine main body, its cylinder shaft is forward slantly arranged from a vertical direction, a connecting rod supercharging type supercharging device 50 is arranged, and pressurized air is supplied to a carburetor 54 for composing a fuel supplying device N. At this time, a crank chamber intake port 40a is arranged on the upper side of the crank shaft 64 and a crank chamber discharging port 40b is arranged on the lower side thereof, an intake port 42a for leading new air into a combustion chamber 65 is arranged on the lower side of a cylinder head 42, and the intake port 42a and the discharging port 40b communicate with each other in a cylinder lower side by a pressure intake pipe 53 and an intake control valve 251.

97. 发明专利

JPH09264156A CRANKSHAFT SUPPORTING STRUCTURE FOR 2-CYCLE ENGINE 失效
公开(公告)号：JPH09264156A
公开(公告)日：1997-10-07
申请号：JP7377896
申请日：1996-03-28
申请人： KOYO SEIKO CO
发明人： SEKIDO SHINICHI , BUN AKIHIRO
IPC分类号： F02B75/32 , F02B75/02 , F02B75/16 , F16C9/02 , F16C19/49 , F16C19/54
摘要： PROBLEM TO BE SOLVED: To stabilize the performance and durability of crankshaft supporting bearing irrespective of an assembling dimension error or the deviation of a dimension changing amount during thermal expansion in the crankshaft supporting structure of a 2-cycle engine. SOLUTION: One side of a crankshaft 4 and the other end thereof are supported on a crank case 1 via a cylindrical roller bearing 7. For the cylindrical roller bearing 7, a cylindrical roller 73 is positioned in an axial direction by one bearing ring 72 and a relative displacement between one bearing ring 72 and the cylindrical roller 73 is permitted by the other bearing ring 71. Even if opposing axial loads are applied to the inner and outer rings of a deep groove ball bearing 6 or the cylindrical roller bearing 7 by an assembling dimension error or the deviation of a dimension changing amount caused by an assembling width between the balance weights of the crankshaft 4 or the forming position of the step part 1a of the crank case 1, no unnecessary preloads are applied especially to the deep groove ball bearing 6. No damage is given to its bearing function even if the inner and outer rings 71 and 72 of the cylindrical roller bearing 7 is shifted in relative position.

98. 发明专利

JPH09249170A VEHICLE OF MOTOR SCOOTER TYPE 失效
公开(公告)号：JPH09249170A
公开(公告)日：1997-09-22
申请号：JP5942896
申请日：1996-03-15
申请人： YAMAHA MOTOR CO LTD
发明人： WATANABE SHOEI
IPC分类号： B62J99/00 , F01P3/18 , F02B61/02 , F02B75/16 , B62J39/00
摘要： PROBLEM TO BE SOLVED: To improve the efficiency of cooling and assure the maintenance of stable cooling performance by providing a duct for directing cooling air to a radiator from a cooling fan, and providing an air discharge port at a portion of a vehicle body cover facing the heat discharge port of the radiator. SOLUTION: A radiator 28 is disposed slantly so that a heat discharge port 44 and a guide 45 faces rearward, and on the circumference of cooling fan 35 a shroud 51 having a new air intake port 50 is formed. A duct 52 to lead cooling air to the radiator 28 from the fan 35 is arranged over between the fan 35 and the radiator 28. This duct 52 is formed integrally with the shroud 51 and directed upward and bent at the angle of about 90 degrees rearward to cover a supply port 43 of the radiator 28. Accordingly, the radiator 28 is forcibly cooled by the cooling air generated by the fan 35 and led by the duct 52 to thereby improve the efficiency of cooling.

99. 发明专利

JPH09144599A CRANKCASE STRUCTURE FOR FOUR-CYCLE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH09144599A
公开(公告)日：1997-06-03
申请号：JP32627695
申请日：1995-11-22
申请人： HONDA MOTOR CO LTD
发明人： OYAMA TAKASHI , HIRAYAMA SHUJI
IPC分类号： B62M9/08 , F02B61/02 , F02B67/06 , F02B75/02 , F02B75/16 , F02F1/24 , F02F7/00 , F02F11/00
摘要： PROBLEM TO BE SOLVED: To water-tightly close between a cam chain chamber and a belt type continuously variable transmission chamber by a small number of papers and easily mount/demount a cam chain at maintenance time. SOLUTION: In a four-cycle internal combustion engine 30 in which a crankshaft 40 penetrates a partition wall 71 of a crankcase partitioning a cam chain chamber 52 and a belt type continuously variable transmission chamber 70 and a through hole 71a is closed with a seal member 72, the through hole 71a is closed with the circular annular seal member 72 having an external diameter larger than a maximum external diameter in a condition that a cam chain 51 is wound to a cam chain driving sprocket 55 mounted to be fitted to the crankshaft.

100. 发明专利

JPH09144554A HIGH-EFFICIENCY ENGINE 失效
公开(公告)号：JPH09144554A
公开(公告)日：1997-06-03
申请号：JP24968196
申请日：1996-09-20
申请人： MONTRESOR GIANFRANCO
发明人： MONTRESOR GIANFRANCO
IPC分类号： F02B71/00 , F02B15/00 , F02B33/14 , F02B41/00 , F02B75/00 , F02B75/16 , F02B75/40
摘要： PROBLEM TO BE SOLVED: To realize a double acting cylinder type explosion engine so as to provide a highly efficient engine. SOLUTION: In a double acting single cylinder explosion engine, an auxiliary member for optimizing the suction stroke is arranged so that the burning gas is not sucked by a piston and that the burning gas is sucked by the auxiliary member. An engine is formed of a cylinder 2 and a piston 3 to be slid therein, and a through shaft is fitted to the same shaft with a center shaft of the piston, and this through shaft is divided into two semi-shafts 4, 5 having the same dimension and the same shape by the piston, and these semi-shafts are respectively formed of auxiliary pistons 14, 15 to be slid inside of suction chambers 10, 11, and narrow diameter parts 12, 13, in which the suction gas passes through so as to achieve each explosion chamber through heads 8, 9, a hole part, and a leak or a clearance part, and an exhaust hole 21 is formed at a central part of the cylinder 2. The engine is connected to at least one connecting rod, and generates the explosion twice during one rotation of the connecting rod at 360 degree.

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