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21. 发明授权

US5343846A Control system for internal combustion engines 失效
标题翻译：内燃机控制系统
公开(公告)号：US5343846A
公开(公告)日：1994-09-06
申请号：US156070
申请日：1993-11-23
申请人： Ken Ogawa , Yoshikazu Oshima
发明人： Ken Ogawa , Yoshikazu Oshima
IPC分类号： F02D45/00 , F02D41/00 , F02M25/08 , F02M33/02 , F02D41/04
CPC分类号： F02D41/0045 , F02B2275/18 , F02D41/0042
摘要： A control system for an internal combustion engine controls an amount of auxiliary air supplied to the engine in the following manner: Concentration of evaporative fuel contained in a gas purged from an evaporative emission control system into an intake passage of the engine is calculated based on a purging flow rate estimated based on operating conditions of the engine, and an output from a flowmeter arranged in the evaporative emission control system. A volume of the gas purged over a predetermined time period is calculated based on the output from the flowmeter. A parameter indicative of dynamic characteristics of the gas is calculated based on operating conditions of the engine. An amount of air contained in the purged gas drawn into a combustion chamber of the engine is calculated at least based on the concentration of evaporative fuel, the volume of the purged gas, and the parameter indicative of dynamic characteristics of the gas. The amount of auxiliary air supplied to the engine is controlled in a manner dependent on the amount of air contained in the purged gas.
摘要翻译：用于内燃机的控制系统以下列方式控制供应给发动机的辅助空气量：从蒸发排放控制系统吹入到发动机的进气通道中的气体中所含的蒸发燃料的浓度基于基于发动机的运行条件估计的净化流量，以及来自设置在蒸发排放控制系统中的流量计的输出。基于流量计的输出计算在预定时间段内净化的气体体积。基于发动机的运行条件计算表示气体的动态特性的参数。至少基于蒸发燃料的浓度，净化气体的体积和表示气体的动态特性的参数，计算吸入到发动机的燃烧室中的净化气体中所含的空气量。供给到发动机的辅助空气的量以取决于吹扫气体中所含的空气量的方式进行控制。

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