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11. 发明专利

JPS6329111B2 失效
公开(公告)号：JPS6329111B2
公开(公告)日：1988-06-10
申请号：JP12680280
申请日：1980-09-12
申请人： SANSHIN KOGYO KK , YAMAHA HATSUDOKI KK
发明人： FUJIMOTO HIROAKI , OOKI RYOZO
IPC分类号： F02P7/03 , F02B75/02 , F02P1/08 , F02P3/08 , F02P7/067 , F02P9/00
摘要： An improved solid-state ignition system for a two-cycle internal combustion engine that increases scavenging and improves the smoothness of the engine during light load and low speed operation. A switch connected to the throttle valve is operative to enable a switching circuit at low throttle settings which in turn is adapted to inhibit in accordance with the firing order of the engine, the firing of each cylinder every other period so that the number of explosions is reduced by half while the intervals between explosions is maintained uniform. The switching circuit is connected to the control gates of the switching elements which control the flow of primary current to the ignition coil for each cylinder. When enabled, the switching circuit functions by periodically shorting the ignition signal applied to the gate of each switching element so that each switching element is responsive to only every second firing pulse produced by its respective sensing coil.

12. 发明专利

JPS6287634A MARINE TWO-CYCLE FUEL-INJECTION ENGINE 失效
公开(公告)号：JPS6287634A
公开(公告)日：1987-04-22
申请号：JP22698785
申请日：1985-10-14
申请人： SANSHIN KOGYO KK
发明人： FUJIMOTO HIROAKI , TOMITA YUTAKA , KANAMARU TOSHIHIRO , TORIKAI KATSUMI
IPC分类号： F02D41/02 , F02B3/06 , F02B75/02 , F02B75/12 , F02D41/00 , F02D41/04 , F02D41/36 , F02M69/10
摘要： PURPOSE:To improve a combustion state as well as to prevent a vibration from occurring, by making fuel injection into intermittence so as to cause each cylinder to mutually maintain a state of being exploded at regular intervals when detecting a low speed or low load driving state in an engine. CONSTITUTION:At a controller 30, when opening of a throttle valve 20 or an engine speed is lower than the reference value from each detection result of a throttle valve opening detector 29 and an engine speed detector 28, it is so judged that an engine 11 is in a low load or low speed driving state. At this time, actual injection timing to each cylinder is set down as one time at every two turns of the engine 11, and power is outputted to a driving part of a fuel injection nozzle 24 so as to cause each cylinder to be exploded at 240 deg. regular intervals. On the other hand, when the engine 11 is in a normal driving state, the actual injection timing to each cylinder is set down as one time per revolution of the engine, and each cylinder explodes at 120 deg. regular intervals.

13. 发明专利

JPS6237509A CRANKSHAFT OF MULTI-CYLINDER INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS6237509A
公开(公告)日：1987-02-18
申请号：JP17572985
申请日：1985-08-12
申请人： SANSHIN KOGYO KK
发明人： HOSHIBA AKIHIKO , FUJIMOTO HIROAKI
IPC分类号： F16C3/06 , F16F15/24
摘要： PURPOSE:To enable setting of resonant rotation in low rotation area by increasing the inertia mass of web at the furthest position from the flywheel thereby decreasing the resonant rotation. CONSTITUTION:The crankshaft 10 has three pins 11 corresponding with respective cylinder where webs 12A-12C are provided to respective pin 11 while a flywheel 13 is provided at one end. Consequently, only the inertia mass of web 12C arranged at the furthermost position from the flywheel 13 will increase. As a result, resonant rotation can be reduced by approximately same degree with the case where all webs 12A-12C are enlarged thus to enable setting in low rotation area.

14. 发明专利

JPS57165648A CARBURETOR WITH MACHINE FOR COLD TIME EXCESS FUEL 失效
公开(公告)号：JPS57165648A
公开(公告)日：1982-10-12
申请号：JP5204781
申请日：1981-04-07
申请人： SANSHIN KOGYO KK , YAMAHA MOTOR CO LTD
发明人： FUJIMOTO HIROAKI , OGASAWARA TAKIO
IPC分类号： F02M7/12 , F02M1/04 , F02M1/10
摘要： PURPOSE:To obtain adequate mixture ratio in accordance with a status of operation, in a carburetor feeding a rich mixture at cold time of an engine, by opening and closing a solenoid mechanism in an excess fuel bypass passage through an engine temperature detector switch. CONSTITUTION:At starting, an intake passage 2 is closed by a choke valve 10, if started here, the intake passage 2 also becomes negative pressure by negative pressure of a combustion chamber 4, and fuel is fed from a slow line port 19. In this case, because the valve 10 is closed, an air amount is decreased to obtain a relatively rich mixture, further fuel is also fed from a bypass passage 23 due to the negative pressure, then a mixture becomes excessively rich, thus starting can be surely performed even at cold time. On the other hand, when an engine is warmed up, a water temperature sensor 34 turns off a solenoid 30, and a plunger 29 is pressed by a spring 31 and lowered to close a valve hole 27 and close the bypass passage 23. At this time, normal fuel is fed into the passage 2 from the slow line port 19, 20 or main port 17.

15. 发明专利

JPH10122024A EXHAUST-TEMPERATURE RISE INHIBITOR FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10122024A
公开(公告)日：1998-05-12
申请号：JP29749596
申请日：1996-10-17
申请人： SANSHIN KOGYO KK
发明人： KOIKE TAKASHI , FUJIMOTO HIROAKI , HENMI YASUHIKO
IPC分类号： B63H20/24 , F01N3/24 , F02D9/02 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To prevent a catalyst arranged in the exhaust passage defined inside an exhaust pipe from being damaged by the heat of exhaust passing through the exhaust passage. SOLUTION: A throttle valve 70 is provided for opening or closing an intake passage 55 communicating with an internal combustion engine 13. An exhaust pipe defining an exhaust passage communicating with the internal combustion engine 13 is extended therefrom, and a catalyst is arranged in the exhaust passage. Temperature sensors 121 and 122 are provided for detecting the temperature of exhaust emitted out of the internal combustion engine 13. A valve- closing assist means 124 is provided so as to operate based on detection signals from the temperature sensors 121 and 122, or concretely when the temperature of exhaust exceeds a predetermined temperature, for closing the throttle valve 7O. A throttle operation part 89 is connected to the throttle valve 70 to open or close it. The throttle operation part 89 and the valve-closing assist means 124 are operated individually.

16. 发明专利

JPH1059290A COOLING STRUCTURE OF OUTBOARD ENGINE 失效
公开(公告)号：JPH1059290A
公开(公告)日：1998-03-03
申请号：JP22334996
申请日：1996-08-26
申请人： SANSHIN KOGYO KK
发明人： FUJIMOTO HIROAKI
IPC分类号： B63H20/28 , B63H21/32 , F01P3/02 , F02B61/04 , F02B67/00
摘要： PROBLEM TO BE SOLVED: To allow to form cooling water jackets with a complicated form to an exhaust guide at a low cost. SOLUTION: An engine 10 is loaded on the upper surface of an exhaust guide 7 provided between a top cowl 7 and an upper case 8, and an expansion chamber S housing a catalyst 24 formed in a bag form is installed to the lower surface of the exhaust guide 17, so as to compose an outboard engine 1. In this outboard engine 1, the exhaust guide 17 is made in a structure dividing into the upper part and the lower part, and cooling water jackets 17b and 17e are formed in the exhaust guide 17. Since the exhaust guide 17 is made in the structure dividing into the upper part and the lower part, the cooling jackets 17b and 17e with a complicated form can be formed to the exhaust guide 17 easily and at a low cost, and the low cost of the outboard engine 1 can be realized.

17. 发明专利

JPH107091A EXHAUST GAS COLLECTING STRUCTURE FOR OUTBOARD ENGINE 失效
公开(公告)号：JPH107091A
公开(公告)日：1998-01-13
申请号：JP16305396
申请日：1996-06-24
申请人： SANSHIN KOGYO KK
发明人： FUJIMOTO HIROAKI
IPC分类号： B63H20/24 , F01N13/00 , F01N13/12 , F01N13/18 , F01N99/00 , F02B61/04 , F01N7/00 , F01N7/12 , F01N7/18
摘要： PROBLEM TO BE SOLVED: To perform collecting of exhaust gas efficiently on a boat without introducing any increased cost of an outboard engine. SOLUTION: An outboard engine comprised of an exhaust gas structure for discharging exhaust gas discharged from the engine stored within a cowling to surrounding atmosphere through an expansion chamber arranged below the engine, catalyst stored in the expansion chamber, a substantial inverse U-shaped exhaust gas pipe 19 communicated with the catalyst and an exhaust gas passage communicated with the exhaust gas pipe 19 is constructed such that a threaded hole (a communicating hole) 19g communicated within the exhaust gas pipe 19 is formed in the vicinity of a down-stream side opening 19b communicated with the exhaust gas passage of the exhaust gas pipe 19, an exhaust gas collecting exhaust gas probe 23 is fixed to the communicating hole 19g and then the exhaust gas flowing in the exhaust gas pipe through the catalyst is collected through the probe 23. With such an arrangement as above, since the exhaust gas probe 23 is fixed to the exhaust gas pipe 19, resulting in that a connecting operation of the hose 30 to the exhaust gas probe 23 can be performed easily on the boat and then workability of collecting the exhaust gas is improved.

18. 发明专利

JPH09151753A TWO-CYCLE ENGINE WITH CATALYST 失效
公开(公告)号：JPH09151753A
公开(公告)日：1997-06-10
申请号：JP30936895
申请日：1995-11-28
申请人： SANSHIN KOGYO KK
发明人： KOIKE TAKASHI , FUJIMOTO HIROAKI
IPC分类号： B63H20/24 , F01N3/20 , F02B1/04 , F02B25/20 , F02B61/04 , F02B75/02 , F02D9/02 , F02D11/10 , F02D17/02 , F02D41/04 , F02D41/22
摘要： PROBLEM TO BE SOLVED: To provide a two-cycle engine which can cope with engine abnormality without impairing a purifying function of a catalyst. SOLUTION: In the case of constituting a two-cycle engine 9 arranging a throttle valve 37 changing a passage area in an intake passage 21 also a catalyst 32 purifying exhaust gas in an exhaust passage 26, a passage opening/closing valve 50 opening/closing a passage is arranged in the downstream of the throttle valve 37 in the intake passage 21, an ECU (opening/closing valve abnormality time control means) 55 forcedly closing the passage opening/closing valve 50, when the engine is in abnormality of overheat, oil level lowering down, catalytic temperature abnormal rise, etc., is provided.

19. 发明专利

JPH0648390A MUFFLER OF PROPULSION MACHINE OF SHIP 失效
公开(公告)号：JPH0648390A
公开(公告)日：1994-02-22
申请号：JP21734192
申请日：1992-07-24
申请人： SANSHIN KOGYO KK
发明人： NAKAYASU YOSHIKAZU , FUJIMOTO HIROAKI
IPC分类号： B63H20/24 , B63H20/00 , B63H20/32 , F01N13/12 , F02B61/04 , F02B75/02 , F02B75/18 , F02B75/20 , F02M35/16 , B63H21/26 , F01N7/12
摘要： PURPOSE:To greatly reduce the noise although combustion air can be sufficiently supplied into an engine. CONSTITUTION:An outboard engine 10 provided with a cowling 24 for covering the periphery of the engine 17 of a propulsion unit is provided with a muffler box 25 arranged on the outside of the cowling 24, wherein inner spaces of the muffler box 25 and the cowling 24 are communicated wit each other by a duct 26.

20. 发明专利

JPH03249368A TEMPERATURE CONTROLLER FOR WATER-COOLED INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH03249368A
公开(公告)日：1991-11-07
申请号：JP4564090
申请日：1990-02-28
申请人： SANSHIN KOGYO KK
发明人： FUJIMOTO HIROAKI
IPC分类号： F02M31/20 , F01P3/00 , F01P3/20 , F02B61/04 , F02D45/00 , F02M35/10
摘要： PURPOSE:To improve the extent of output in a high load area by installing a feed water control circuit which feeds a conduit around a charging passage with cooling water fed by a water pump under pressure at time of engine high load being detected by a load state detector. CONSTITUTION:A feed water control circuit 43 is made up of providing a selector valve 45, selecting a water jacket 37 and a conduit 38 each to a supply channel 41 of a water pump 39 and a first drainage channel 44 each for connection, a valve driver 46 for this valve 45 and a control unit 47 controlling this valve driver 46 after obtaining the detected result of a throttle valve opening sensor 42. In this circuit 43, at time of high load in an internal combustion engine 17, cooling water goes by way of the conduit 38 around a crankcase 32 (a charging passage) first and, after cooling the circumference of the crankcase 32, it gets into the water jacket 37, absorbing heat around a combustion chamber 28. In brief, air passing through the crankcase 32 is cooled by cooling water, not yet rising in temperature, immediately after pressure- feed by the water pump 39, making it into high density, whereby a charging air quantity into the combustion chamber 28 is increased, thus improvement in output is promoted.

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