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    • 22. 发明授权
    • Gas concentration detector having heater for use in internal combustion engine
    • 具有用于内燃机的加热器的气体浓度检测器
    • US06696673B2
    • 2004-02-24
    • US09904866
    • 2001-07-16
    • Yoshiyuki Okamoto
    • Yoshiyuki Okamoto
    • G06F1900
    • F02D41/1494F02D41/1456
    • A gas concentration detector includes a detector element measuring a constituent gas concentration in exhaust gas emitted from an internal combustion engine and a heater for activating the detector element. During a cranking period of the engine, the heater is pre-heated by electric current supplied thereto in a controlled manner to increase a heater resistance to a certain level. After the engine cranking is completed, a full voltage is supplied to the heater, and thereafter the heater current is supplied in a controlled manner to keep the detector element activated. Since the heater resistance is increased to a certain level by pre-heating, an amount of heater current is limited to a certain level when the full voltage is supplied, and thereby the detector element is prevented from being damaged by an excessive heat stress.
    • 气体浓度检测器包括测量从内燃机排出的废气中的组分气体浓度的检测器元件和用于启动检测器元件的加热器。 在发动机的起动期间,加热器以受控的方式供给的电流被预加热,以将加热器电阻增加到一定水平。 在发动机起动完成之后,向加热器供给全电压,之后以受控的方式提供加热器电流以保持检测器元件的激活。 由于通过预热将加热器电阻增加到一定水平,所以当提供全电压时,加热器电流的量被限制在一定水平,从而防止了检测器元件被过度的热应力损坏。
    • 23. 发明授权
    • Controller for internal combustion engine
    • 内燃机控制器
    • US06662782B2
    • 2003-12-16
    • US10195305
    • 2002-07-16
    • Hisashi IidaJun HasegawaYoshiyuki OkamotoTomoaki Nakano
    • Hisashi IidaJun HasegawaYoshiyuki OkamotoTomoaki Nakano
    • F02P500
    • F02D41/1458F02D41/1441F02D41/1456F02D41/1475F02D41/1498F02D2041/001F02D2200/1004F02D2200/1015
    • The present invention is directed to provide a controller for an internal combustion engine, capable of suppressing deterioration in drivability of an engine. A controller for an internal combustion engine has lean control means for calculating a torque margin from a reference engine speed and an actual engine speed and setting a combustion air-fuel ratio of an internal combustion engine to the lean side on the basis of the torque margin. In addition to correction of a fuel injection amount by the lean control means, the fuel injection amount is further corrected on the basis of a final correction value for reducing deterioration in drivability. The final correction value is set by selecting either a correction value which is set on the basis of an engine speed fluctuation amount or a final correction value of last time, which suppresses deterioration in drivability more. Thus, the operation of setting the air-fuel ratio to the lean side while considering deterioration in drivability can be performed.
    • 本发明旨在提供一种能够抑制发动机的驾驶性能劣化的内燃机的控制装置。 用于内燃机的控制器具有用于根据参考发动机转速和实际发动机转速计算转矩余量的稀薄控制装置,并且基于转矩裕度将内燃机的燃烧空燃比设定为稀侧 。 除了通过稀薄控制装置校正燃料喷射量之外,还基于用于降低驾驶性能的劣化的最终校正值进一步校正燃料喷射量。 通过选择基于发动机转速波动量或最后一次的最终校正值设定的校正值来设定最终校正值,从而抑制驾驶性能的劣化。 因此,可以在考虑驾驶性能的劣化的同时进行将空燃比设定为稀薄侧的动作。