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    • 99. 发明专利
    • Working gas circulation type engine
    • 工作气体循环型发动机
    • JP2014005801A
    • 2014-01-16
    • JP2012143164
    • 2012-06-26
    • Toyota Motor Corpトヨタ自動車株式会社
    • MISAWA SEITARO
    • F02D21/04F02B47/10F02D21/06F02M21/02F02M25/00F02M25/10
    • Y02T10/121Y02T10/32
    • PROBLEM TO BE SOLVED: To provide a working gas circulation type engine the engine startability of which can be improved.SOLUTION: Fig.2 shows a relationship between a lapsed time after starting and an integrated value Neof an engine speed. When a starter signal is changed over from OFF into ON at a time t, cranking is started. The integrated value Nestarts to rise after the cranking is started, and further rises along with explosion in a combustion chamber, and reaches a threshold value Neat a time t. In this embodiment, A Osupply amount is fixed before the time t, and feedback control is executed after the time tso that an Oconcentration in working gas flowing in a circulation path 12 is a reference concentration or lower.
    • 要解决的问题:提供可以提高其发动机起动性的工作气体循环型发动机。解决方案:图2示出了起动后经过的时间与发动机转速的积分值Neof之间的关系。 起动信号在时刻t从OFF变为ON时开始起动。 启动后,Nestarts上升的积分值,随着燃烧室的爆炸而进一步上升,并达到一个时间t的阈值。 在本实施方式中,在时间t之前固定A供给量,在循环路径12中流动的工作气体中的浓度为基准浓度以下之后执行反馈控制。
    • 100. 发明专利
    • Control system for working gas circulation type engine
    • 工作气体循环型发动机控制系统
    • JP2013234580A
    • 2013-11-21
    • JP2012106256
    • 2012-05-07
    • Toyota Motor Corpトヨタ自動車株式会社
    • MISAWA SEITARO
    • F02D21/04F02D41/02F02D45/00F02M21/02F02M25/00
    • Y02T10/32
    • PROBLEM TO BE SOLVED: To detect unburned hydrogen easily in a working gas circulation type hydrogen engine.SOLUTION: A control system for a working gas circulation type hydrogen engine includes a heat release rate estimation means for estimating a heat release rate by hydrogen combustion in a combustion chamber on the basis of a pressure in the combustion chamber; and an unburned hydrogen detection means for detecting unburned hydrogen circulating to the combustion chamber with the working gas via a circulation passage on the basis of an early heat release rate in a period of time from a start of compression to hydrogen injection by a hydrogen injection means in a hydrogen cycle of the working gas circulation type hydrogen engine.
    • 要解决的问题:在工作气体循环型氢发动机中容易检测未燃氢。解决方案:一种用于工作气体循环式氢发动机的控制系统包括:放热速率估计装置,用于通过在 燃烧室基于燃烧室中的压力; 以及未燃烧氢检测装置,用于基于从压缩开始到氢喷射装置的氢气注入的时间段中的早期放热速度,通过循环通道检测循环到燃烧室的未燃烧氢气 在工作气体循环式氢发动机的氢循环中。