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公开(公告)号：US06205982B1
公开(公告)日：2001-03-27
申请号：US09079706
申请日：1998-05-15
IPC分类号： F02M3302
CPC分类号： F02D41/004 , F02D41/2451
摘要： A method for controlling fuel vapor purge flow in an automotive type internal combustion engine. The method includes the steps of determining existence of a purge ON condition and determining a simulated engine airflow value. A desired purge flow is calculated as is a value for a desired purge solenoid current. Utilizing a PID control methodology, the desired purge solenoid current is produced and a purge driver generates a PWM signal with to control a purge solenoid with the purge solenoid.
摘要翻译： 一种用于控制汽车型内燃机中的燃料蒸汽吹扫流量的方法。 该方法包括确定吹扫接通条件的存在并确定模拟的发动机气流值的步骤。 根据所需的清洗螺线管电流的值计算所需的清洗流量。 利用PID控制方法，产生所需的清洗螺线管电流，清洗驱动器产生PWM信号，以便通过吹扫螺线管控制清除电磁阀。
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公开(公告)号：US5003952A
公开(公告)日：1991-04-02
申请号：US523094
申请日：1990-05-14
CPC分类号： F02D41/345 , F02D41/045 , Y02T10/44
摘要： The present invention is a method for use in a fuel control system for an engine equipped with fuel injectors, where the time when a fuel injector is fired to fuel its cylinder, relative to the cylinder's valve events, may be varied to enable better fuel preparation corresponding to the various engine operating conditions.
摘要翻译： 本发明是用于配备有燃料喷射器的发动机的燃料控制系统中的方法，其中燃料喷射器相对于气缸的阀门事件燃烧其燃料喷射器的时间可以变化，以实现更好的燃料准备 对应于各种发动机的运行条件。
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公开(公告)号：US5945597A
公开(公告)日：1999-08-31
申请号：US972836
申请日：1997-11-18
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A method for monitoring the efficiency of a catalytic converter in a motor vehicle includes the steps of determining if at least one predetermined condition is met for monitoring the efficiency of the catalytic converter. The method includes biasing a fuel feedback multiplier of an internal combustion engine of the motor vehicle to run rich or lean if the at least one predetermined condition is met. The method includes counting a number of switches across a predetermined switch point from an upstream oxygen sensor and a downstream oxygen sensor. The method includes calculating a switching frequency ratio based on the count of the switches from the upstream oxygen sensor and downstream oxygen sensor and using the switching frequency ratio to establish the efficiency level of the catalytic converter.
摘要翻译： 用于监测机动车辆中的催化转化器的效率的方法包括以下步骤：确定是否满足至少一个预定条件以监测催化转化器的效率。 如果满足至少一个预定条件，则该方法包括偏置机动车辆的内燃机的燃料反馈乘法器以使其运行为富或稀。 该方法包括对来自上游氧传感器和下游氧传感器的预定切换点的多个开关进行计数。 该方法包括：根据来自上游氧传感器和下游氧传感器的开关数计算开关频率比，并使用开关频率比建立催化转化器的效率水平。
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4.发明授权
公开(公告)号：US5584277A
公开(公告)日：1996-12-17
申请号：US534070
申请日：1995-09-26
CPC分类号： F02D41/34 , F02D41/047 , F02D41/107 , F02D2200/0402 , F02D2200/0406 , F02D2200/0408 , F02D2200/0411 , F02D2200/0414 , Y02T10/44
摘要： The fuel delivery control system monitors engine speed and load parameters to develop a wall wetting history that is indicative of the physical state of the fuel within the intake port or intake manifold. The wall wetting history is used along with engine speed, temperature and pressure measurements to determine the pulse width of the fuel injector signal. Fuel to air ratio is thereby optimized. Transient conditions due to changes in engine load or due to acceleration and deceleration are used to generate a pulse width correction signal to optimize performance on a cycle by cycle basis. Each engine cylinder injector may be independently controlled.
摘要翻译： 燃料输送控制系统监测发动机速度和负载参数以开发指示进气口或进气歧管内的燃料的物理状态的壁润湿历史。 使用墙体润湿历史以及发动机转速，温度和压力测量来确定燃油喷射器信号的脉冲宽度。 从而优化燃料与空气的比例。 由于发动机负载变化或由于加速和减速引起的瞬态条件用于产生脉冲宽度校正信号，以逐周期优化性能。 每个发动机气缸喷射器可以独立控制。
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公开(公告)号：US5847271A
公开(公告)日：1998-12-08
申请号：US646660
申请日：1996-05-08
CPC分类号： F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A method of monitoring efficiency of a catalytic converter in a motor vehicle includes the steps of determining if at least one predetermined condition is met for monitoring the efficiency of the catalytic converter and combining a square wave multiplier signal with a feedback multiplier signal if the at least one predetermined condition is met. The method includes counting a number of square wave edges of the combined signal for an upstream oxygen sensor positioned upstream of the catalytic converter and counting a number of switches of a signal across a predetermined switch point from a downstream oxygen sensor positioned downstream of the catalytic converter. The method also includes the steps of calculating a switching frequency ratio based on the count of square wave edges and oxygen sensor switches and using the switching frequency ratio to establish the efficiency level of the catalytic converter.
摘要翻译： 一种监测机动车辆中的催化转化器的效率的方法包括以下步骤：确定是否满足至少一个预定条件以监测催化转化器的效率，并将方波乘数信号与反馈乘数信号组合，如果至少 满足一个预定条件。 该方法包括对位于催化转化器上游的上游氧传感器的组合信号的多个方波边缘进行计数，并且在位于催化转化器下游的下游氧传感器的预定切换点上计数信号的数量的开关 。 该方法还包括基于方波边缘计数和氧传感器开关计算开关频率比的步骤，并使用开关频率比建立催化转换器的效率水平。
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公开(公告)号：US5826426A
公开(公告)日：1998-10-27
申请号：US902731
申请日：1997-07-30
申请人： Gregory T. Weber , Christopher P. Thomas , Michael T. Vincent , Michael W. Weglarz , Gary L. Seitz
发明人： Gregory T. Weber , Christopher P. Thomas , Michael T. Vincent , Michael W. Weglarz , Gary L. Seitz
CPC分类号： F02D41/1446 , F02D41/1441 , F02D41/1456 , F02D41/2419
摘要： A method and corresponding system for optimizing performance of an internal combustion engine. The present invention senses gases emitted from engine combustion chambers via a first gas sensor and senses gases emitted from said engine combustion chambers subsequent to said gases passing through an engine catalytic converter via a second gas sensor. The temperatures of said first and second gas sensors are then sensed through data output from first and second gas sensors and temperature sensors. The first and second gas sensors are linearized in response to the sensed temperatures of the first and second gas sensors. The fuel level input into the engine combustion chambers is adjusted in response to linearizing of the first and second gas sensors.
摘要翻译： 一种用于优化内燃机性能的方法和相应的系统。 本发明通过第一气体传感器感测从发动机燃烧室排出的气体，并且在所述气体经由第二气体传感器通过发动机催化转化器之后，感测从所述发动机燃烧室排出的气体。 然后通过从第一和第二气体传感器和温度传感器输出的数据来感测所述第一和第二气体传感器的温度。 第一和第二气体传感器响应于第一和第二气体传感器的感测温度被线性化。 响应于第一和第二气体传感器的线性化而调节输入到发动机燃烧室中的燃料液位。
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公开(公告)号：US5003953A
公开(公告)日：1991-04-02
申请号：US523454
申请日：1990-05-14
CPC分类号： F02D41/10 , F02D41/345 , Y02T10/44
摘要： In a fuel control system for an engine equipped with fuel injectors, a method where the fuel injector is fired to fuel its cylinder, relative to the cylinder's valve events, more than once per cycle if a throttle transient has occurred and caused the original firing of the fuel injector to be less than the fuel amount now required by the new engine operating conditions.
摘要翻译： 在配备有燃料喷射器的发动机的燃料控制系统中，一种燃料喷射器相对于气缸的阀门事件被燃烧以对其气缸进行燃料的方法，如果发生节气门瞬变，则每循环一次以上，并使原燃料 燃料喷射器小于新发动机运行条件现在所需的燃料量。
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