公开(公告)号：US5941212A

公开(公告)日：1999-08-24

申请号：US150208

申请日：1998-09-09

申请人： Akira Murakami ,  Seiichi Hosogai ,  Shigeo Hidai ,  Eisaku Gosho

发明人： Akira Murakami ,  Seiichi Hosogai ,  Shigeo Hidai ,  Eisaku Gosho

IPC分类号： F02D41/04 ,  F02D41/10 ,  F02D41/12 ,  F02D41/14

CPC分类号： F02D41/1487 ,  F02D41/123 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/501

摘要： An air-fuel ratio control system for an internal combustion engine includes an ECU which cuts off fuel supply to the engine at deceleration thereof, measures a fuel cut-off period over which the fuel cut-off means cuts off fuel supply to the engine, and enriches the air-fuel ratio of a mixture supplied to the engine to a degree dependent upon the measured fuel cut-off period, at the restart of fuel supply to the engine immediately after termination of cutting-off of fuel supply to the engine. When a second cutting-off of fuel supply to the engine is carried out within a predetermined time period after the restart of fuel supply to the engine immediately after termination of a first cutting-off of fuel supply to the engine, the ECU sets the degree of enriching the air-fuel ratio of the mixture supplied to the engine according to the sum of a first fuel cut-off period over which the first cutting-off of fuel supply to the engine lasted and a second fuel cut-off period over which the second cutting-off of fuel supply to the engine lasted.

摘要翻译： 用于内燃机的空燃比控制系统包括：ECU，其在减速时切断对发动机的燃料供给，测量燃料切断期间燃料切断装置切断对发动机的燃料供给， 并且在停止向发动机的燃料供给终止之后立即将供给到发动机的混合物的空燃比丰富到取决于测量的燃料截止周期的程度。 当在首次切断向发动机的燃料供给终止之后，在重新开始向发动机供给燃料之后的预定时间段内进行向发动机的燃料供给的第二切断时，ECU设定程度 根据第一燃料切断期间和发动机持续时间的第一燃料供给停止的第一燃料切断期和第二燃料切断期间的总和，提供供给发动机的混合物的空燃比， 向发动机提供燃油的第二次切断持续。

公开(公告)号：US5632250A

公开(公告)日：1997-05-27

申请号：US530525

申请日：1995-09-19

申请人： Atsushi Kato ,  Yoshikazu Ohshima ,  Eisaku Gosho ,  Kazuhiro Ueda ,  Shigeo Hidai ,  Akira Murakami ,  Toshiyuki Nishida ,  Shigeru Aoki ,  Ryuichi Noseyama ,  Kenichiro Ishibashi ,  Katsunori Nakamura ,  Nobuo Arai

发明人： Atsushi Kato ,  Yoshikazu Ohshima ,  Eisaku Gosho ,  Kazuhiro Ueda ,  Shigeo Hidai ,  Akira Murakami ,  Toshiyuki Nishida ,  Shigeru Aoki ,  Ryuichi Noseyama ,  Kenichiro Ishibashi ,  Katsunori Nakamura ,  Nobuo Arai

IPC分类号： F02D19/02 ,  F02D41/00 ,  F02D41/06 ,  F02D41/22 ,  F02M51/02 ,  F02M69/28 ,  F02M69/46 ,  F02M51/00

CPC分类号： F02M69/462 ,  F02D19/022 ,  F02D19/024 ,  F02D19/025 ,  F02D19/027 ,  F02D41/0027 ,  F02D41/064 ,  F02D41/22 ,  F02M21/0224 ,  F02M21/029 ,  F02M51/02 ,  F02M69/28 ,  F02D2041/224 ,  F02M21/0215 ,  F02M21/0278 ,  Y02T10/32

摘要： Supply of fuel is stopped when fuel pressure sensed by a pressure sensor provided upstream of a regulator is at a predetermined value or less to avoid abnormal combustion caused by improper adjustment of air/fuel ratio. Even slight variation of the fuel pressure is sensed by monitoring the fuel pressure in an interval after closing a fuel shut-off valve once opened to re-opening of it. In addition, an abnormal state in the fuel system is detected by comparing an accumulated value of amount of injected fuel and an estimated value of fuel consumption in the tank. Furthermore, the peak current value of the fuel injection valve is controlled so that, when the engine at a low temperature is started, lift load of the injection valve is larger than sticking force of the injection valve, thereby preventing such situation where the injection valve is frozen so that it cannot supply fuel to the engine. In this case, the engine can be smoothly started by simultaneously controlling the valve open time. Furthermore, the temperature of the regulator is properly maintained so that optimum function can be exhibited by controlling the flow rate of cooling water flowing through a water passage provided in the regulator for regulating the fuel gas pressure.

摘要翻译： 在设置在调节器上游的压力传感器检测到的燃料压力为预定值以下时，停止供给燃料，以避免由于空气/燃料比的不当调整引起的异常燃烧。 通过在关闭燃料切断阀一旦打开以重新打开之后的间隔中监视燃料压力来检测燃料压力的轻微变化。 另外，燃料系统中的异常状态是通过比较燃料喷射量的累积值和燃料消耗的估计值来检测的。 此外，控制燃料喷射阀的峰值电流值，使得当低温发动机开始时，喷射阀的升程负荷大于喷射阀的粘附力，从而防止了喷射阀 被冻结，使其不能向发动机供应燃料。 在这种情况下，可以通过同时控制阀打开时间来平稳地起动发动机。 此外，适当地保持调节器的温度，从而通过控制流过设置在用于调节燃料气体压力的调节器中的水通道的冷却水的流量来显示最佳功能。

公开(公告)号：US06980904B2

公开(公告)日：2005-12-27

申请号：US10998054

申请日：2004-11-29

申请人： Eisaku Gosho ,  Toshinori Tsukamoto

发明人： Eisaku Gosho ,  Toshinori Tsukamoto

IPC分类号： F02D45/00 ,  F02D41/00 ,  F02D41/04 ,  F02D41/06 ,  F02D41/22 ,  G01K15/00 ,  G06G7/70 ,  G06F19/00

CPC分类号： G01K15/00 ,  F02D41/042 ,  F02D41/064 ,  F02D41/222 ,  F02D2200/023 ,  F02D2200/0414 ,  G01K2205/00 ,  Y02T10/40

摘要： A failure diagnosis apparatus for a temperature sensor which detects a temperature that changes depending on an operating condition of an internal combustion engine. Determining that the temperature sensor fails, if the execution condition of the failure determination is satisfied and a temperature difference between the maximum temperature and the minimum temperature detected by the temperature sensor in the determination period, is less than a failure determination threshold value, when the starting of the engine in the preceding engine operation cycle was a cold start. Alternatively, determining that the temperature sensor fails, if the execution condition is satisfied, the temperature difference between the maximum temperature and the minimum temperature is less than the failure determination threshold value, and an engine stop period in the preceding engine operation cycle is longer than a failure determination permission time period, when the starting of the engine in the preceding engine operation cycle was not a cold start.

摘要翻译： 一种温度传感器的故障诊断装置，其检测根据内燃机的运转状态而变化的温度。 确定温度传感器故障，如果在确定期间满足故障判定的执行条件和由温度传感器检测到的最高温度与最低温度之间的温度差小于故障判定阈值，则 发动机在前一个发动机运行循环中的起动是一个冷启动。 或者，如果满足执行条件，则判定温度传感器发生故障，最高温度与最低温度之间的温度差小于故障判定阈值，前一个发动机运转周期内的发动机停止期间比 当前一个发动机运转循环中发动机起动不是冷启动时的故障判定允许时间段。

公开(公告)号：US08333061B2

公开(公告)日：2012-12-18

申请号：US12239171

申请日：2008-09-26

申请人： Daisuke Sato ,  Hidetaka Maki ,  Jun Iida ,  Eisaku Gosho ,  Hiroaki Nishino

发明人： Daisuke Sato ,  Hidetaka Maki ,  Jun Iida ,  Eisaku Gosho ,  Hiroaki Nishino

IPC分类号： F01N3/00 ,  F02B27/04

CPC分类号： F01N11/002 ,  F01N2550/04 ,  F01N2560/08 ,  Y02T10/47

摘要： An exhaust gas purifying apparatus for an internal combustion engine, including a particulate filter provided in an exhaust passage of the engine; a pressure difference sensor for detecting a pressure difference between upstream and downstream side pressures of the particulate filter; an upstream side passage, which connects the pressure difference sensor and an upstream side with respect to the particulate filter of the exhaust passage; and a downstream side passage, which connects the pressure difference sensor and a downstream side with respect to the particulate filter of the exhaust passage. An exhaust gas flow rate is calculated according to an operating condition of the engine. A characteristic of change in the pressure difference, which is detected by the pressure difference detector and corresponds to a change in the exhaust gas flow rate, is detected. An abnormality of the downstream side passage is determined based on the characteristic of change in the pressure difference.

摘要翻译： 一种用于内燃机的废气净化装置，包括设置在发动机的排气通道中的颗粒过滤器; 用于检测微粒过滤器的上游侧压力和下游侧压力之间的压力差的压力差传感器; 上游侧通道，其连接压力差传感器和相对于排气通道的微粒过滤器的上游侧; 以及将压差传感器和下游侧相对于排气通路的微粒过滤器连接的下游侧通路。 根据发动机的运转状况来计算废气流量。 检测由压差检测器检测出的并对应于废气流量变化的压力差变化的特征。 基于压力差的变化的特性确定下游侧通路的异常。

公开(公告)号：US20050137780A1

公开(公告)日：2005-06-23

申请号：US10998054

申请日：2004-11-29

申请人： Eisaku Gosho ,  Toshinori Tsukamoto

发明人： Eisaku Gosho ,  Toshinori Tsukamoto

IPC分类号： F02D45/00 ,  F02D41/00 ,  F02D41/04 ,  F02D41/06 ,  F02D41/22 ,  G01K15/00 ,  G06G7/70

CPC分类号： G01K15/00 ,  F02D41/042 ,  F02D41/064 ,  F02D41/222 ,  F02D2200/023 ,  F02D2200/0414 ,  G01K2205/00 ,  Y02T10/40

摘要： A failure diagnosis apparatus for a temperature sensor which detects a temperature that changes depending on an operating condition of an internal combustion engine. Determining that the temperature sensor fails, if the execution condition of the failure determination is satisfied and a temperature difference between the maximum temperature and the minimum temperature detected by the temperature sensor in the determination period, is less than a failure determination threshold value, when the starting of the engine in the preceding engine operation cycle was a cold start. Alternatively, determining that the temperature sensor fails, if the execution condition is satisfied, the temperature difference between the maximum temperature and the minimum temperature is less than the failure determination threshold value, and an engine stop period in the preceding engine operation cycle is longer than a failure determination permission time period, when the starting of the engine in the preceding engine operation cycle was not a cold start.

摘要翻译： 一种温度传感器的故障诊断装置，其检测根据内燃机的运转状态而变化的温度。 确定温度传感器故障，如果在确定期间满足故障判定的执行条件和由温度传感器检测到的最高温度与最低温度之间的温度差小于故障判定阈值，则 发动机在前一个发动机运行循环中的起动是一个冷启动。 或者，如果满足执行条件，则判定温度传感器发生故障，最高温度与最低温度之间的温度差小于故障判定阈值，前一个发动机运转周期内的发动机停止期间比 当前一个发动机运转循环中发动机起动不是冷启动时的故障判定允许时间段。

公开(公告)号：US06789523B2

公开(公告)日：2004-09-14

申请号：US10246732

申请日：2002-09-19

申请人： Hideyuki Oki ,  Eisaku Gosho ,  Takashi Isobe

发明人： Hideyuki Oki ,  Eisaku Gosho ,  Takashi Isobe

IPC分类号： F02B7700

CPC分类号： F02M25/0827 ,  F02D41/042 ,  F02D2200/0414 ,  F02D2200/0606

摘要： A failure diagnosis apparatus for diagnosing a failure in an evaporative fuel processing system is disclosed. The evaporative fuel processing system has a fuel tank, a canister containing an adsorbent for adsorbing evaporative fuel generated in the fuel tank, an air passage connected to the canister and communicating with the atmosphere, a first passage for connecting the canister and the fuel tank, a second passage for connecting the canister and an intake system of an internal combustion engine, a vent shut valve for opening and closing the air passage, and a purge control valve provided in the second passage. The purge control valve and the vent shut valve are closed when stoppage of the engine is detected and it is determined whether there is a leak in the evaporative fuel processing system according to the detected pressure in the evaporative fuel processing system during a predetermined determination time period after closing the purge control valve and the vent shut valve. The leak determination of the evaporative fuel processing system is inhibited when the difference between the gas layer temperature and the ambient temperature detected upon stoppage of the engine is less than or equal to a predetermined threshold.

摘要翻译： 公开了一种用于诊断蒸发燃料处理系统中的故障的故障诊断装置。 蒸发燃料处理系统具有燃料箱，容纳用于吸附在燃料箱内产生的蒸发燃料的吸附剂的罐，与罐连通并连通的空气通路，连接罐和燃料箱的第一通路， 用于连接罐和内燃机的进气系统的第二通道，用于打开和关闭空气通道的排气关闭阀以及设置在第二通道中的清洗控制阀。 在检测到发动机停止时，清除控制阀和排气关闭阀关闭，并且在预定的确定时间段内确定蒸发燃料处理系统中是否根据检测到的压力在泄漏燃料处理系统中存在泄漏 关闭清洗控制阀和排气关闭阀后。 当发动机停止时检测到的气体层温度和环境温度之差小于或等于预定阈值时，蒸发燃料处理系统的泄漏确定被抑制。