Combustion state determination method of internal combustion engine, as
well as combustion state control method and combustion state control
system for internal combustion engine
    31.
    发明授权
    Combustion state determination method of internal combustion engine, as well as combustion state control method and combustion state control system for internal combustion engine 失效
    内燃机燃烧状态测定方法,燃烧状态控制方法和内燃机燃烧状态控制系统

    公开(公告)号:US5687692A

    公开(公告)日:1997-11-18

    申请号:US505248

    申请日:1995-09-14

    IPC分类号: F02D41/14 G01M15/04 F02D45/00

    摘要: A combustion control system for a lean-burn engine, to be mounted on an automotive vehicle, uses probabilistic and statistical nature of combustion variance upon lean-burn operation to obtain reliable combustion control. The system detects a variance value in angular acceleration of a rotating member driven by the engine, normalizes the variance value in accordance with an operating state of the engine to determine a normalized variance value. The system also compares the normalized variance value with a predetermined threshold value to obtain a deteriorated combustion determining value. The system compares the deteriorated combustion determining value with a predetermined reference value and controls a combustion variance adjustment element so that the deteriorated combustion determining value matches the reference value.

    摘要翻译: PCT No.PCT / JP94 / 02154 Sec。 371 1995年9月14日第 102(e)1995年9月14日PCT PCT 1994年12月20日PCT公布。 第WO95 / 17592号公报 日期:1995年6月29日用于安装在汽车上的稀燃燃烧发动机的燃烧控制系统在稀燃操作中使用燃烧方差的概率统计特性以获得可靠的燃烧控制。 系统检测由发动机驱动的旋转构件的角加速度的方差值,根据发动机的运行状态对方差值进行归一化,以确定归一化方差值。 该系统还将归一化方差值与预定阈值进行比较,以获得恶化的燃烧确定值。 该系统将劣化燃烧判定值与规定的基准值进行比较,并控制燃烧方差调整要素,使劣化燃烧判定值与基准值一致。

    Apparatus and method for internal-combustion engine control
    32.
    发明授权
    Apparatus and method for internal-combustion engine control 失效
    内燃机控制装置及方法

    公开(公告)号:US5595060A

    公开(公告)日:1997-01-21

    申请号:US438553

    申请日:1995-05-10

    摘要: In a control apparatus and control method for an internal combustion engine having an exhaust purifying catalytic device for adsorbing nitrogen oxide contained in exhaust gases from the engine, the adsorption state of nitrogen oxide adsorbed by the catalytic device is estimated by an electronic control unit during the lean-combustion driving of the engine. If the catalytic device is saturated with nitrogen oxide, the ignition timing is delayed and the exhaust gas is recirculated to the intake side of the engine with the lean air-fuel ratio kept unchanged. This starts the nitrogen oxide reduced driving mode for deteriorating the combustion state in the engine. At this time, the engine output will not change by a great amount. Further, a reducing atmosphere is created around the catalytic device by unburnt gases, generated due to the deterioration of the combustion state, to deoxidize the adsorbed nitrogen oxide. As a result, the purifying ability of the catalytic device can be recovered to suppress the discharge amount of nitrogen oxide without deteriorating the smoothness of engine driving and fuel economy.

    摘要翻译: 在具有用于吸附来自发动机的废气中含有的氮氧化物的排气净化催化装置的内燃机的控制装置和控制方法中,催化装置吸附的氮氧化物的吸附状态由电子控制装置在 发动机的稀燃驱动。 如果催化装置被氮氧化物饱和,则随着空燃比保持不变,点火正时延迟并且排气再循环到发动机的进气侧。 这就开始了用于使发动机的燃烧状态恶化的氮氧化物还原驱动模式。 此时,发动机输出不会发生大的变化。 此外,由于燃烧状态的劣化而产生的未燃烧气体在催化装置周围产生还原气氛,以使吸附的氮氧化物脱氧。 结果,可以回收催化装置的净化能力,以抑制氮氧化物的排放量,而不会降低发动机驱动的平滑性和燃料经济性。

    Engine ignition timing control system and method
    33.
    发明授权
    Engine ignition timing control system and method 失效
    发动机点火正时控制系统及方法

    公开(公告)号:US5422811A

    公开(公告)日:1995-06-06

    申请号:US22490

    申请日:1993-02-25

    申请人: Kazuhide Togai

    发明人: Kazuhide Togai

    摘要: An ignition timing control system and method for multicylinder internal combustion engine, utilizing a variable valve operating system such as variable valve timing system and a partial cylinder operating system. An engine control unit calculates a standard ignition timing for each cylinder according to the valve operating condition, rotational speed of the engine and intake air pressure. The control unit also calculates a target ignition timing by compensating the standard ignition timing according to an operating condition of the vehicle and controls an ignition driver to operate an ignitor associated with each cylinder at the target ignition timing.

    摘要翻译: 一种用于多缸内燃机的点火正时控制系统和方法,利用可变气门正时系统和部分气缸操作系统等可变气门操作系统。 发动机控制单元根据气门操作条件,发动机转速和进气压力,计算每个气缸的标准点火正时。 控制单元还通过根据车辆的运行状况补偿标准点火正时来计算目标点火正时,并且控制点火驱动器以在目标点火正时与每个气缸相关联的点火器。

    Idle control system and method for modulated displacement type engine
    34.
    发明授权
    Idle control system and method for modulated displacement type engine 失效
    空载控制系统及调制排量式发动机的方法

    公开(公告)号:US5415143A

    公开(公告)日:1995-05-16

    申请号:US15857

    申请日:1993-02-10

    申请人: Kazuhide Togai

    发明人: Kazuhide Togai

    摘要: An idle control system includes an engine speed determining unit, a unit for determining the number of operating cylinders, a valve stopping unit for stopping the operation of inlet and exhaust valves of some of the cylinders, an idle control parameter calculating unit, and an engine speed control unit. The idle control parameter calculating unit calculates at least a target idle speed and a target idle position as idle control parameters according to the data on the number of operating cylinders. The engine speed control unit controls an idle speed control valve so as to remove a deviation of an actual engine speed from the target engine speed, based on a target deviation compensating gain or a corrected target position obtained by a calculated position correcting unit. Thus, the idle control method performed by the idle control system allows the engine to operate stably even when the engine is switched to a partial operation from a full operation or vice versa and is subject to a sudden torque change during idling.

    摘要翻译: 怠速控制系统包括发动机速度确定单元,用于确定操作气缸数量的单元,用于停止一些气缸的入口和排气阀的操作的阀停止单元,怠速控制参数计算单元和发动机 速度控制单元 怠速控制参数计算单元根据关于操作气缸数量的数据,至少计算目标怠速和目标怠速位置作为怠速控制参数。 发动机转速控制单元基于由计算出的位置校正单元获得的目标偏差补偿增益或校正目标位置来控制怠速控制阀,以消除实际发动机转速与目标发动机转速的偏差。 因此,怠速控制系统执行的怠速控制方法即使当发动机从完全操作切换到部分操作或反之亦然时,发动机也能稳定地操作,并且在空转期间经受突然的扭矩变化。