Inventor
MOTOYAMA YU
JP21 patents
Patents
21 patentsUS6039012AMar 21, 2000
Operating control system for 2 cycle direct injection engine
YAMAHA MOTOR CO LTD23 citations92
US5682870ANov 4, 1997
Air fuel ratio detecting device and system for engines
YAMAHA MOTOR CO LTD19 citations92
US5193508AMar 16, 1993
Fuel injection system
YAMAHA MOTOR CO LTD21 citations92
US5123399AJun 23, 1992
Air fuel injector assembly
YAMAHA MOTOR CO LTD24 citations92
US5113829AMay 19, 1992
Two cycle internal combustion engine
YAMAHA MOTOR CO LTD31 citations92
US5063887ANov 12, 1991
Exhaust control valve system for parallel multi-cylinder two-cycle engine
YAMAHA MOTOR CO LTD29 citations92
US5063888ANov 12, 1991
Exhaust control valve system for parallel multi-cylinder two-cycle engine
YAMAHA MOTOR CO LTD30 citations92
US5190006AMar 2, 1993
Injection arrangement for improving fuel consumption
YAMAHA MOTOR CO LTD35 citations91
US6085733AJul 11, 2000
Ignition control system for engine
YAMAHA MOTOR CO LTD41 citations89
US5211145AMay 18, 1993
Fuel injection system for engine
YAMAHA MOTOR CO LTD42 citations89
US5092287AMar 3, 1992
Fuel injecting system for two cycle engine
YAMAHA MOTOR CO LTD23 citations88
US5181493AJan 26, 1993
Operation control device for in-cylinder injection engine
YAMAHA MOTOR CO LTD43 citations87
US5613468AMar 25, 1997
Fuel injection control
YAMAHA MOTOR CO LTD18 citations81
US5826557AOct 27, 1998
Operation control system for direct injection 2 cycle engine
YAMAHA MOTOR CO LTD19 citations80
US5690063ANov 25, 1997
Engine control system
YAMAHA MOTOR CO LTD18 citations80
US5946908ASep 7, 1999
Engine control and wall temperature sensor
YAMAHA MOTOR CO LTD13 citations73
US5732674AMar 31, 1998
Engine control system
YAMAHA MOTOR CO LTD11 citations73
US5136990AAug 11, 1992
Fuel injection system including supplemental fuel injector
YAMAHA MOTOR CO LTD11 citations73
US5095873AMar 17, 1992
Fuel injection system and method for engine
YAMAHA MOTOR CO LTD12 citations72
US6109223AAug 29, 2000
Operating method of two stroke direct injected engine
YAMAHA MOTOR CO LTD12 citations71
US5105792AApr 21, 1992
Fuel injection system for an engine
YAMAHA MOTOR CO LTD5 citations61