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公开(公告)号：US4821701A
公开(公告)日：1989-04-18
申请号：US213667
申请日：1988-06-30
CPC分类号： F02D41/064 , F02D41/2445 , F02D41/2451 , F02D41/2461 , F02M25/08
摘要： A system and method for the detection and correction of purge corruption in the adaptive memory portion of a control system controlling, in part, the fuel to air ratio during the cold start up of an internal combustion engine. This is achieved by performing two calibrations (or updates) of the adaptive memory cells (or locations) during the previous engine operation. The adaptive memory is first updated with the purge system off. The memory locations addressed at this time are denoted as the purge free adaptive memory cells. Next, the adaptive memory is updated with the purge system on. These memory locations are denoted as the normal adaptive memory cells. During the next cold engine start, purge corruption of the adaptive memory is detected when the difference between the two calibrations exceeds a value representing an absence of purge corruption.
摘要翻译： 一种用于检测和校正控制系统的自适应存储器部分中的吹扫损坏的系统和方法，所述控制系统部分地控制内燃机的冷起动期间的燃料与空气比。 这通过在先前发动机操作期间执行自适应存储器单元（或位置）的两次校准（或更新）来实现。 首先使用清除系统关闭自适应内存。 此时寻址的存储器位置被表示为无清除自适应存储器单元。 接下来，打开自动清理系统更新自适应内存。 这些存储器位置被表示为正常自适应存储器单元。 在下一个冷引擎启动期间，当两个校准之间的差异超过表示不存在清除损坏的值时，检测到自适应存储器的清除损坏。
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公开(公告)号：US5467593A
公开(公告)日：1995-11-21
申请号：US238095
申请日：1994-05-04
申请人： Michael T. Vincent , Terry R. Gutermuth , Robert E. Lawrie , Richard K. Moote , Mark A. Simonich , James R. Tamm
发明人： Michael T. Vincent , Terry R. Gutermuth , Robert E. Lawrie , Richard K. Moote , Mark A. Simonich , James R. Tamm
CPC分类号： F02D41/1441
摘要： A method of feedback control for an electronic fuel injection system in an internal combustion engine includes the steps of calculating a front O.sub.2 sensor switching voltage threshold based on a signal from a front O.sub.2 sensor upstream of a catalyst in an exhaust system for the engine and from a rear O.sub.2 sensor downstream of the catalyst, comparing a voltage output of the front O.sub.2 sensor to the calculated front O.sub.2 sensor switching voltage threshold to determine if a fuel/air ratio of the engine is rich or lean, and decreasing or increasing an amount of fuel to the engine by fuel injectors of the electronic fuel injection system if the fuel/air ratio is determined rich or lean, respectively.
摘要翻译： 一种用于内燃机中的电子燃料喷射系统的反馈控制方法，包括以下步骤：基于来自用于发动机的排气系统中的催化剂上游的前O2传感器的信号，以及从 在催化剂下游的后O2传感器，将前O2传感器的电压输出与计算的前O2传感器开关电压阈值进行比较，以确定发动机的燃料/空气比是富还是偏，并且减少或增加 如果燃料/空气比分别确定为浓或稀，分别由电子燃料喷射系统的燃料喷射器向发动机供给燃料。
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公开(公告)号：US5249559A
公开(公告)日：1993-10-05
申请号：US996468
申请日：1992-12-24
CPC分类号： B60H1/322 , F02D31/005 , F02M3/07 , F02D2011/102
摘要： Many internal combustion engines have an auxiliary means for controlling airflow into the engine at idle, such as an Automatic Idle Speed (AIS) motor to compensate for changing load requirements. A method is disclosed for controlling the AIS motor and in turn engine idle speed to compensate for changing loads due to the operation of the air conditioner. The method recognizes the relationship between ambient temperature and pressures generated within the air conditioning compressor and the compensation necessary to maintain a smooth idle speed. The method also utilizes adaptive learning to relate a "looked up" of the air conditioner to the current value of auxiliary air flow required by a warmed up engine.
摘要翻译： 许多内燃机具有用于在怠速时控制发动机的空气的辅助装置，例如自动怠速（AIS）电动机，以补偿变化的负载要求。 公开了一种用于控制AIS电动机的方法，并且进而发动机怠速来补偿由于空调器的操作而导致的变化的负载。 该方法识别环境温度和空调压缩机内产生的压力之间的关系以及维持平稳怠速所需的补偿。 该方法还利用自适应学习将空调的“查找”与预热发动机所需的辅助空气流的当前值相关联。
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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：US5517964A
公开(公告)日：1996-05-21
申请号：US238098
申请日：1994-05-04
CPC分类号： F02D37/02 , F02D31/005 , F02P5/1508 , Y02T10/46
摘要： A method of controlling idle speed of an internal combustion engine in an automotive vehicle is provided. The method includes the steps of calculating an acceleration error of the engine and determining whether the calculated acceleration error is greater than a predetermined deadband. The method also includes the steps of opening or closing an Automatic Idle Speed (AIS) stepper motor if the acceleration error is greater than the predetermined deadband and increasing or decreasing a spark advance if the acceleration error is not greater than the predetermined deadband.
摘要翻译： 提供一种控制机动车辆内燃机的怠速的方法。 该方法包括计算发动机的加速度误差并确定所计算的加速度误差是否大于预定死区的步骤。 该方法还包括如果加速度误差大于预定死区并打开或关闭自动空转速度（AIS）步进电机并且如果加速度误差不大于预定死区，则增加或减少火花提前的步骤。
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