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41. 发明专利

JPH0627505B2 失效
公开(公告)号：JPH0627505B2
公开(公告)日：1994-04-13
申请号：JP14143883
申请日：1983-08-02
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU , SUGIZAKI MASAMORI
IPC分类号： F02B61/02 , F02B75/02 , F02B75/18 , F02B75/24 , F02F7/00

42. 发明专利

JPH0674040A COOLING DEVICE FOR AIR INTAKE CONTROL TYPE ENGINE 失效
公开(公告)号：JPH0674040A
公开(公告)日：1994-03-15
申请号：JP24701891
申请日：1991-08-30
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU
IPC分类号： F01L7/02 , F01P3/02 , F01P3/14 , F02B31/02 , F02M69/00
摘要： PURPOSE:To provide a cooling device for an air intake control type engine which is designed to prevent the occurrence of defective operation owing to the thermal strain of an intake air control valve. CONSTITUTION:An air intake control type engine is formed in such a way that an intake air passage having an intake air valve opening led out to the outer wall of a cylinder head is provided and intake air control valve 21 formed of a round rod body to control the sectional area of the intake air passage is disposed in the axial direction of a cam shaft to the bottom wall part, on the side, mating with a cylinder block, of the intake air passage. In this type of engine, a cooling device is formed in such a way that a cooling jacket 31 for the air intake control valve is arranged in a manner to surround at least the part on the combustion chamber side of the intake air control valve 21 therewith. In this case, the cooling jacket 31 is designed to comprise an upper jacket part 31c formed on a cylinder head 4, a lower jacket part 31a formed on a cylinder block 3, and an intercommunicating part 31b for intercommunicating the lower and upper jacket parts 31c and 31a.

43. 发明专利

JPH05195787A FUEL INJECTION TYPE TWO-CYCLE ENGINE 失效
公开(公告)号：JPH05195787A
公开(公告)日：1993-08-03
申请号：JP3279192
申请日：1992-01-22
申请人： YAMAHA MOTOR CO LTD
发明人： YAMAMOTO HIROSHI , ISAKA YOSHIHARU
IPC分类号： F02B19/12 , F02B19/16 , F02B75/02 , F02M67/02 , F02M69/04 , F02M69/08 , F02M69/10
摘要： PURPOSE:To provide a simple and cheap two-cycle engine of fuel injection type, with which the operating cycles can be stabilized through prevention of misfire even though the operation takes place in the low load range. CONSTITUTION:In a cylinder 6 a main combustion chamber 10 is formed between a cylinder head 7 and piston 8, while an aux. combustion chamber 12 is furnished which is in communication with the main 10 through a passage. The aux. chamber 12 is equipped with an air and fuel injection valve 18 to inject a mixture 16 of compressed air 14 and fuel 15. The chamber 12 is also equipped with an ignition plug 21.

44. 发明专利

JPH0571320A VARIABLE VALVE TIMING DEVICE FOR ENGINE 失效
公开(公告)号：JPH0571320A
公开(公告)日：1993-03-23
申请号：JP25570491
申请日：1991-09-06
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU
IPC分类号： F01L1/18 , F01L1/26 , F01L13/00
摘要： PURPOSE:To see that the structure does not get complicated even if the number of valves increases by obviating the changeover between the coupling and the noncoupling between fellow swing arms. CONSTITUTION:A cam nose 15b for high speed and a cam nose 15a for middle speed lower in nose height are made on one cam shaft 15, and swing arms 32 and 31 for high speed and low and middle speed being driven by the cam nose 15b and 15a, respectively, are provided. The base part of this swing arm 32 for high speed is supported with a supporting mechanism 33 capable of being changed over into supporting condition and nonsupporting condition, and the top of the swing arm 31 for low and middle speed is pressed with the top of the swing arm 32 for high speed, whereby both sides are coupled. When the supporting mechanism 33 is in supporting condition, a valve 11 is driven to open or close through the swing arm 32 for high speed, and in nonsupporting condition, the valve 11 is driven to open or close through a swing arm 21 for low and middle speed by the cam nose 15a for low and middle speed.

45. 发明专利

JPH0510144A ENGINE INTAKE CONTROLLER 失效
公开(公告)号：JPH0510144A
公开(公告)日：1993-01-19
申请号：JP18540091
申请日：1991-06-28
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU
IPC分类号： F02B29/00 , F02B29/08 , F02B31/02
摘要： PURPOSE:To provide an engine intake controller that is able to generate a longitudinal swirl surely and also capable of getting around the problem of an increase in intake air resistance at the time of high engine speed or the like. CONSTITUTION:An intake control valve 21, letting intake air eccentrically flow into the side part of a ceiling wall 17f of an intake passage 17 by throttling a cylinder block side part of the intake passage 17 at the time of low inlet air quantity, is installed in a bottom wall 17d of the intake passage 17. Then, this intake control valve 21 is formed into a rod body enough in length laying over plural cylinder intake passages different in ignition timing, while an interconnecting hole 21d, interconnecting respective cylinder intake passages themselves at a time when the intake control valve 21 is turned round to a position where it throttles the intake passage 17, is formed in an inner part of the intake control valve 21.

46. 发明专利

JPH0479873B2 失效
公开(公告)号：JPH0479873B2
公开(公告)日：1992-12-17
申请号：JP5665982
申请日：1982-04-07
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU
IPC分类号： B62M7/02

47. 发明专利

JPH04349085A SUCTION DEVICE OF MOTORCYCLE 失效
公开(公告)号：JPH04349085A
公开(公告)日：1992-12-03
申请号：JP17211291
申请日：1991-07-12
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU , HOSOI KOJI
IPC分类号： B62J35/00 , B62J99/00 , B62M7/02
摘要： PURPOSE:To construct the suction system of a motorcycle as compact as practicable without sacrificing its capacity, and at the same time, secure the fuel tank with ample capacity. CONSTITUTION:A recess 12 concave upward is provided at the bottom of a fuel tank 11 in such a way as confronting the suction passage 36 extending from a V-engine, and in this recess 12, an air cleaner 41 with element 41a and a suction chamber 42 leading to the air cleaner are formed solidly as in a single piece. Suction cases 40, 50 are provided in which these air cleaner 41 and suction chamber 42 are put in line vertically, and the top of the suction passage 36 is connected with the bottom of the suction chamber 42 therein. The oversurfaces of these cases 40, 50 and the bottom surface of abovementioned recess 12 confronting these oversurfaces are inclined downward as going backward.

48. 发明专利

JPH04331439A MAGNETIC AC GENERATOR ENGINE 失效
公开(公告)号：JPH04331439A
公开(公告)日：1992-11-19
申请号：JP12662991
申请日：1991-04-30
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU , MOCHIZUKI NORIHISA , KINOSHITA TOSHIO
IPC分类号： H02K7/18 , H02K9/06 , H02K21/14
摘要： PURPOSE:To provide a magnetic AC generator of an engine which can improve the cooling efficiency without causing agitation loss, etc., with simple constitution and can reduce the heat effect to the engine side. CONSTITUTION:The rotor 11 of a magnetic AC generator 7 is attached to the crank shaft 4 being the rotary shaft of an engine 1, and this rotor 1 and the stator arranged outside of it are covered with a power unit 2 and a cover 18, and when the crank shaft 4 rotates by the operation of the engine 1, air is taken via an opening 19 into the cover 18 by the rotation of the rotor 11 so as to ventilate it, so it cools the generation coil 8 of the stator 9.

49. 发明专利

JPH04252866A AIR-FUEL INJECTION ENGINE 失效
公开(公告)号：JPH04252866A
公开(公告)日：1992-09-08
申请号：JP2259291
申请日：1991-01-24
申请人： YAMAHA MOTOR CO LTD
发明人： ISAKA YOSHIHARU
IPC分类号： F02D21/08 , F02B75/02 , F02M25/07 , F02M67/02 , F02M67/06 , F02M69/04
摘要： PURPOSE:To decrease the discharge of NOx in full through a slight exhaust gas recirculation value as well as to stabilize a driving run at time of medium- high load driving by conducting a part of exhaust gas to an injector under the specified driving conditions, and spraying this exhaust gas to a combustion chamber together with air and fuel. CONSTITUTION:When a piston goes up and a scavenging stroke is over, an injector 48 opens and a mixture of air and fuel is sprayed into a combustion chamber 50. When the piston 16 is reached to a specified timing advance position short of a top dead center, this mixture is ignited by a spark plug 46, and the piston 16 goes down, and when an exhaust port is opened, exhaust is started. A mixture 60 feeds the injector 48 with air alone at time of low load, but if load grows larger, it mixes air and the exhaust gas together, feeding it to the injector 48. In brief, exhaust gas recirculation takes place at medium load. Therefore, a combustion temperature at this medium load is lowered, thus the discharge of NOx is reduced.

50. 发明专利

JPH04237871A AIR PUMP UNIT FOR AIR-FUEL INJECTION TYPE ENGINE 失效
公开(公告)号：JPH04237871A
公开(公告)日：1992-08-26
申请号：JP1689291
申请日：1991-01-18
申请人： YAMAHA MOTOR CO LTD
发明人： MOCHIZUKI NORIHISA , KINOSHITA TOSHIO , ISAKA YOSHIHARU
IPC分类号： F01P3/12 , F02B61/02 , F02B75/02 , F02M67/02 , F02M69/08
摘要： PURPOSE:To stabilize a temperature of air to be discharged by an air pump as well as to cool this pump with certainty by driving the air pump feeding an injector with air directly by dint of engine speed output, making an engine into a liquid-cooled one, and cooling the air pump with an engine coolant. CONSTITUTION:Rotation of a crankshaft 62 of an engine 36 is transmitted to a plunger type air pump 72 and a gear type fuel pump 74 via a toothed belt 66 and two one-way clutches 68, 70. An engine coolant cooled in a radiator 48 enters a water pump 96 from a lower part of the radiator 48, and it is fed to each part of the engine 36. In addition, a part of the coolant discharged out of a cylinder 40 is guided into the air pump 72 by a pipe 100, and after this pump 72 is cooled, it is put back to an upper part of the radiator 48 by a pipe 102.

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