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1. 发明授权

US5467755A Method and system for controlling flexible fuel vehicle fueling 失效
标题翻译：用于控制柔性燃料车辆加油的方法和系统
公开(公告)号：US5467755A
公开(公告)日：1995-11-21
申请号：US295450
申请日：1994-08-25
申请人： Julie A. Konrad , Mark Freeland , Brian S. Czuhai
发明人： Julie A. Konrad , Mark Freeland , Brian S. Czuhai
IPC分类号： F02D19/08 , F02D33/00 , F02D41/00 , F02D41/14 , F02M37/00
CPC分类号： F02D33/006 , F02D19/0636 , F02D19/081 , F02D19/084 , F02D41/0025 , F02D41/2454 , F02M37/0064 , F02D2200/0612 , F02D41/2445 , F02D41/2451 , F02M37/0011 , Y02T10/36
摘要： An adaptive fuel control system and method directed for use in a motor vehicle powered by a fuel-injected engine and having a fuel tank and a fuel rail and which is operative to run on a plurality of fuels and fuel blends. The system includes a refueling mixer which acts as a fluid damper to slowly introduce new fuel into the fuel rail and correspondingly slow the rate at which new fuel composition is mixed with existing fuel. A stratification mixer is also utilized to re-mix components of blended fuels which may have separated at cold temperatures. An Exhaust Gas Oxygen sensor (EGO) monitors engine exhaust gases and generates a corresponding electrical signal when the air/fuel mixture of the fuel switches between rich and lean. Finally, an electronic control assembly communicates with the EGO and the fuel injectors to generate and store in memory an updatable extended adaptive fuel control table of air/fuel ratio multipliers for selected engine load/engine speed cells. The ECA is adapted to update each of the cells in an amount proportional to the distance the corresponding load point is away from the corresponding load point of all bordering cells. The ECA further generates and stores an updatable counter table and an updatable time stamping table which, together, are operative to adjust the fuel injectors to provide the correct adaption for the current fuel at the current engine speed and engine load.
摘要翻译：一种适用于燃料控制系统和方法，该系统和方法用于由燃料喷射发动机驱动并且具有燃料箱和燃料轨道的机动车辆，并且可操作地在多个燃料和燃料混合物上运行。该系统包括加油混合器，其作为流体阻尼器以缓慢地将新燃料引入燃料轨道并相应地降低新燃料组合物与现有燃料混合的速率。还使用分层混合器来重新混合可能在低温下分离的混合燃料的组分。废气氧气传感器（EGO）监测发动机废气，并在燃料的空气/燃料混合物在浓缩和稀燃之间切换时产生相应的电信号。最后，电子控制组件与EGO和燃料喷射器通信，以在存储器中生成并存储用于选择的发动机负载/发动机转速单元的可更新的空气/燃料比乘数的扩展自适应燃料控制表。 ECA适于以与相应负载点远离所有边界单元的相应负载点成比例的量来更新每个单元。 ECA还生成并存储可更新的计数器表和可更新的时间戳表，其一起可操作以调节燃料喷射器，以在当前发动机转速和发动机负荷下为当前燃料提供正确的适配。

2. 发明授权

US5245979A Oxygen sensor system with a dynamic heater malfunction detector 失效
标题翻译：氧传感器系统带有动态加热器故障检测器
公开(公告)号：US5245979A
公开(公告)日：1993-09-21
申请号：US967342
申请日：1992-10-28
申请人： Ross D. Pursifull , Julie A. Konrad , Robert W. Ridgway
发明人： Ross D. Pursifull , Julie A. Konrad , Robert W. Ridgway
IPC分类号： G01N27/409 , F02D41/14
CPC分类号： F02D41/1495 , F02D41/1494
摘要： A heated exhaust gas oxygen sensor assembly for an internal combustion engine that changes the heater status in order to detect a malfunction of the heater. The assembly includes an oxygen sensor, heater, impedance sensor, and controller. The oxygen sensor has a sensing element and a pair of output leads. The sensing element detects the relative oxygen concentration in the exhaust gas and responsively provides an oxygen level signal on the output leads. The heater physically warms the oxygen sensor. The impedance sensor is interconnected to the output leads of the oxygen sensor and measures the impedance between them. The controller first activates and then deactivates the heater. The controller also receives the impedance signals representing the impedance of the oxygen sensor when the heater is both on and off. The controller compares these two impedance levels and, if the difference between (or ratio of) these two values fails to meet a predetermined standard, the controller issues a heater malfunction signal. The malfunction signal may then alert the driver or mechanic that a heater malfunction has been detected.
摘要翻译：用于内燃机的加热废气氧传感器组件，其改变加热器状态以便检测加热器的故障。组件包括氧传感器，加热器，阻抗传感器和控制器。氧传感器具有感测元件和一对输出引线。感测元件检测排气中的相对氧浓度，并响应于在输出引线上提供氧气水平信号。加热器物理地加热氧气传感器。阻抗传感器与氧传感器的输出引线互连，并测量它们之间的阻抗。控制器首先激活然后停用加热器。当加热器打开和关闭时，控制器还接收代表氧传感器阻抗的阻抗信号。控制器比较这两个阻抗级别，如果这两个值之间的差值（或比率）不符合预定标准，则控制器发出加热器故障信号。然后，故障信号可以警告驾驶员或机械师已经检测到加热器故障。

3. 发明授权

US5228426A Oxygen sensor system with an automatic heater malfunction detector 失效
标题翻译：氧传感器系统带有自动加热器故障检测器
公开(公告)号：US5228426A
公开(公告)日：1993-07-20
申请号：US967314
申请日：1992-10-28
申请人： Ross D. Pursifull , Julie A. Konrad , Robert W. Ridgway
发明人： Ross D. Pursifull , Julie A. Konrad , Robert W. Ridgway
IPC分类号： F02D35/00 , F02D41/14 , F02D45/00 , G01N27/04 , G01N27/26
CPC分类号： F02D41/1494 , F02D41/1495
摘要： A heated exhaust gas oxygen sensor assembly that automatically detects whether the heater in the assembly is malfunctioning. The assembly includes an oxygen sensor, heater, impedance sensor, and controller. The oxygen sensor detects the relative oxygen concentration in the exhaust gas of an internal combustion engine and issues signal along a pair of output leads. The heater physically warms the oxygen sensor. The impedance sensor is interconnected to the output leads of the oxygen sensor and provides an impedance measurement to the controller. The controller compares the impedance to a predetermined threshold value to judge the effect of the heater in physically warming the sensor. If the impedance is above a predetermined threshold, the controller determines that the heater is not operating properly and issues an alarm signal.
摘要翻译：自动检测组件中的加热器是否发生故障的加热废气氧气传感器组件。组件包括氧传感器，加热器，阻抗传感器和控制器。氧传感器检测内燃机的排气中的相对氧浓度，沿着一对输出引线发出信号。加热器物理地加热氧气传感器。阻抗传感器与氧传感器的输出引线互连，并向控制器提供阻抗测量。控制器将阻抗与预定阈值进行比较，以判断加热器在物理加热传感器时的影响。如果阻抗高于预定阈值，则控制器确定加热器不正常工作并发出报警信号。

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