公开(公告)号：US5546917A

公开(公告)日：1996-08-20

申请号：US405328

申请日：1995-03-16

申请人： Akinori Osanai ,  Toshinari Nagai ,  Hiroshi Kanai ,  Kenji Harima ,  Kazuhiko Iwano ,  Shuji Yuda

发明人： Akinori Osanai ,  Toshinari Nagai ,  Hiroshi Kanai ,  Kenji Harima ,  Kazuhiko Iwano ,  Shuji Yuda

IPC分类号： F02D41/00 ,  F02D41/02 ,  F02D41/14 ,  F02D43/00 ,  F02M25/08

CPC分类号： F02D41/0042 ,  F02D41/0045 ,  F02M25/08 ,  F02D41/0032

摘要： Fuel-vapor evaporating from a fuel tank is led through a vapor pipe and absorbed in a charcoal canister. Fuel-vapor stored in the charcoal canister is supplied to an inlet pipe when a purge valve is opened when the engine is driven, because the pressure in the inlet pipe is low. Fuel-vapor is then burned as fuel in the engine. If the opening of the purge valve is suddenly increased at the start of the purge, the air fuel ratio control is disturbed. Therefore, the purge rate is gradually increased and the vapor concentration of the fuel-vapor purged from the charcoal canister is learned, and the change rate of the purge rate is made small because the air-fuel ratio control may be disturbed when the vapor concentration is not learned enough.

摘要翻译： 从燃料箱蒸发的燃料蒸气被引导通过蒸气管并吸收在炭罐中。 由于入口管内的压力较低，因此当发动机被驱动时打开吹扫阀时，储存在炭罐中的燃料蒸气被供给入口管。 然后，燃料蒸汽作为发动机中的燃料燃烧。 如果在清洗开始时清洗阀的打开突然增加，则空燃比控制被扰乱。 因此，吹扫速度逐渐增加，并且从木炭罐吹扫的燃料蒸气的蒸气浓度被学习，并且由于空气 - 燃料比控制可能在蒸汽浓度 不够学习

公开(公告)号：US5577486A

公开(公告)日：1996-11-26

申请号：US422978

申请日：1995-04-17

申请人： Kenji Harima ,  Toshinari Nagai ,  Hiroshi Kanai ,  Akinori Osanai ,  Kazuhiko Iwano ,  Shuji Yuda ,  Takayuki Demura

发明人： Kenji Harima ,  Toshinari Nagai ,  Hiroshi Kanai ,  Akinori Osanai ,  Kazuhiko Iwano ,  Shuji Yuda ,  Takayuki Demura

IPC分类号： F02D45/00 ,  F02D41/14

CPC分类号： F02D41/2477 ,  F02D41/2454 ,  F02D41/2441

摘要： This fuel injection control apparatus consists of a calculating device for calculating an air-fuel ratio correction factor FAF, a learning device for learning an air-fuel ratio learning factor KG in accordance with the deviation of FAF from the reference value, and a controller for controlling the amount of injected fuel in accordance with FAF and KG. When the start enrichment FASE and the warm-up enrichment FWL are added, KG is learned in accordance with the corrected deviation which is the deviation of FAF corrected by the correction factor f(FASE+FWL) which is concerned with FASE and FWL. The learning accuracy is improved because KG is learned at each region of FWL which is divided into plural regions in accordance with the engine driving conditions.

摘要翻译： 该燃料喷射控制装置由用于计算空燃比校正系数FAF的计算装置，用于根据FAF与参考值的偏差来学习空燃比学习系数KG的学习装置，以及控制器 根据FAF和KG控制注入燃料的量。 当添加开始浓缩FASE和预热浓缩FWL时，根据校正偏差来校正KG，该校正偏差是通过与FASE和FWL有关的校正因子f（FASE + FWL）校正的FAF的偏差。 由于在根据发动机驾驶条件被分成多个区域的FWL的各个区域学习KG，因此学习精度得到改善。

公开(公告)号：US5476081A

公开(公告)日：1995-12-19

申请号：US259230

申请日：1994-06-13

申请人： Koji Okawa ,  Mitsuru Takada ,  Nobuyuki Kobayashi ,  Shuji Yuda ,  Kenji Harima ,  Toshinari Nagai ,  Hiroshi Kanai ,  Akinori Osanai ,  Kazuhiko Iwano

发明人： Koji Okawa ,  Mitsuru Takada ,  Nobuyuki Kobayashi ,  Shuji Yuda ,  Kenji Harima ,  Toshinari Nagai ,  Hiroshi Kanai ,  Akinori Osanai ,  Kazuhiko Iwano

IPC分类号： F02D41/00 ,  F02M25/08 ,  F02M51/00 ,  F02D41/04

CPC分类号： F02D41/0045 ,  F02M25/08 ,  F02D41/0042

摘要： An air-fuel ratio control apparatus includes: a determining part for determining a target purge ratio in accordance with operating conditions of an engine; a purge control part for controlling a flow rate of evaporated fuel, supplied from an evaporated fuel purge system into an intake passage of the engine, by actuating a purge control valve based on the target purge ratio, and for storing an evaporated fuel flow rate of the purge control valve; a fuel injection control part for generating a drive signal in accordance with a fuel injection time, and for controlling an air-fuel ratio of an air-fuel mixture to the intake passage by actuating a fuel injection valve in accordance with the drive signal; an estimating part for estimating the ratio of an evaporated fuel flow rate to an intake air flow rate based on sensed operating conditions of the engine and on the stored evaporated fuel flow rate of the purge control part; and a fuel injection time determining part for determining a fuel injection time based on the estimated ratio, and for supplying the fuel injection time to the fuel injection control part.

摘要翻译： 空燃比控制装置包括：确定部，其根据发动机的运转条件来确定目标吹扫比; 吹扫控制部分，用于通过基于所述目标吹扫比率来驱动吹扫控制阀，用于控制从蒸发燃料吹扫系统供应到发动机的进气通道中的蒸发燃料的流量，并且用于存储蒸发燃料的蒸发燃料流量 清洗控制阀; 燃料喷射控制部分，用于根据燃料喷射时间产生驱动信号，并且根据驱动信号通过致动燃料喷射阀来控制空气 - 燃料混合物与进气通道的空燃比; 估计部分，用于基于感测到的发动机的运行条件以及所述净化控制部分的储存的蒸发燃料流量来估计蒸发的燃料流量与进气流量的比率; 以及燃料喷射时间确定部分，用于基于估计的比率确定燃料喷射时间，并且用于将燃料喷射时间提供给燃料喷射控制部分。