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21. 发明授权

US06820470B2 Intake manifold leakage detection system of internal combustion engine 失效
标题翻译：内燃机进气歧管泄漏检测系统
公开(公告)号：US06820470B2
公开(公告)日：2004-11-23
申请号：US10267585
申请日：2002-10-10
申请人： Sadafumi Shidara , Nobuhiro Takahashi
发明人： Sadafumi Shidara , Nobuhiro Takahashi
IPC分类号： G01L326
CPC分类号： F02M35/10 , F02B61/045 , F02D11/107 , F02D31/005 , F02D41/062 , F02D2200/0406 , F02D2200/703 , F02M35/167
摘要： A system detecting leakage of an internal combustion engine having a secondary air passage, bypassing a throttle valve, at an air intake pipe connecting to the intake manifold and a secondary air control valve which regulates opening of the secondary air passage. In the system, when the changes in the absolute manifold pressure and the atmospheric pressure before and after the engine starts rotation, are small, it is determined that the intake manifold may possibly leak and should be monitored. Specifically, the opening of the secondary air passage is changed and the changes in the pressure, etc., before and after the opening is changed, are calculated and based thereon, it is determined whether the intake manifold, in fact, leaks. With this, it becomes possible to detect intake manifold leakage accurately with a simple configuration.
摘要翻译：一种检测在连接到进气歧管的进气管处，旁通节流阀的二次空气通道的内燃机的泄漏的系统和调节二次空气通道的开度的二次空气调节阀。在该系统中，当发动机起动旋转之前和之后的绝对歧管压力和大气压力的变化较小时，确定进气歧管可能泄漏并应被监测。具体地说，二次空气通道的打开被改变，并且在打开之前和之后改变压力等的变化，并且基于此，确定进气歧管是否实际上是泄漏的。由此，能够以简单的结构精确地检测进气歧管泄漏。

22. 发明授权

US06614345B2 Oil pressure warning system for outboard motor 有权
标题翻译：舷外马达油压报警系统
公开(公告)号：US06614345B2
公开(公告)日：2003-09-02
申请号：US09939828
申请日：2001-08-28
申请人： Ryuichi Kimata , Kazuhiro Satou , Sadafumi Shidara , Nobuhiro Takahashi
发明人： Ryuichi Kimata , Kazuhiro Satou , Sadafumi Shidara , Nobuhiro Takahashi
IPC分类号： B60Q100
CPC分类号： F01M1/18
摘要： An oil pressure warning system for an outboard motor for detecting and alarming an abnormal oil pressure of an internal combustion engine, the system including a first oil pressure switch which generates an ON signal when the oil pressure is less than or equal to a first predetermined oil pressure, and a second oil pressure switch which generates an ON signal the oil pressure is less than or equal to a second predetermined oil pressure set higher than the first predetermined oil pressure. The abnormality of oil pressure is detected and alarmed based on the ON signal of the switches. The first and second predetermined oil pressures are determined based on an oil pressure characteristic of a (possible) maximum oil temperature (under which the engine has been warmed up) set relative to the engine speed, thereby ensuring to detect and alarm the abnormality of oil pressure under any engine speed and any oil temperature.
摘要翻译：一种用于检测和报警内燃机的异常油压的舷外马达的油压警告系统，该系统包括第一油压开关，当油压小于或等于第一预定油时产生ON信号以及第二油压开关，其产生ON信号，所述油压小于或等于设定为高于所述第一预定油压的第二预定油压。基于开关的ON信号检测并报警油压异常。第一和第二预定油压是基于相对于发动机转速而设定的（可能的）最大油温（可能的）最高油温的油压特性来确定的，从而确保检测和报警油的异常任何发动机转速和任何油温下的压力。

23. 发明授权

US06612882B2 Idling speed control system for outboard motor 失效
公开(公告)号：US06612882B2
公开(公告)日：2003-09-02
申请号：US10028314
申请日：2001-12-28
申请人： Sadafumi Shidara , Nobuhiro Takahashi
发明人： Sadafumi Shidara , Nobuhiro Takahashi
IPC分类号： B63H2300
CPC分类号： F02D31/005 , F02B61/045 , F02D29/02 , F02D41/009 , F02D41/0097 , F02D2200/0406 , F02D2200/0414 , F02D2200/602 , F02D2200/703
摘要： An idling speed control system for an outboard motor mounted on a boat and equipped with an internal combustion engine, whose output is connected to a propeller through a clutch, having secondary air supplier that supplies secondary air. In the system, a difference of preceding and present current command values each indicative of a desired secondary air supply amount is comparing with a predetermined value when the clutch is changed, and the current command value is increased or decreased by a predetermined correction amount when the difference is greater than the predetermined value. With this, it can surely improve the control stability and suppress the overshooting or undershooting of engine speed due to the load change when the clutch is changed, thereby enabling to eliminate or reducing the shock to be felt by the operator and improving the feeling of the operator.

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