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发明公开
CN101605976A 内燃机的燃料性状检测装置 失效 - 权利终止

内燃机的燃料性状检测装置
摘要：
本发明涉及一种内燃机的燃料性状检测装置，其目的在于，即使是使用高十六烷值燃料时也能够精度良好地求出十六烷值。本发明的内燃机的燃料性状检测装置具备：缸内压力检测装置；基于缸内压力来计算点火延迟时间的点火延迟时间计算装置；基于点火延迟时间来辨别使用燃料是否为高十六烷值燃料的高十六烷值燃料辨别装置；在使用燃料被辨别为是高十六烷值燃料时，修正内燃机的控制参数，以使得点火延迟时间变长的点火延迟时间延长装置；通过点火延迟时间延长装置延长点火延迟时间后，基于缸内压力来再次计算点火延迟时间的点火延迟时间再计算装置；基于再计算出的点火延迟时间来计算使用燃料的十六烷值的十六烷值计算装置。
摘要（英）：

A fuel property detector for an internal combustion engine determines a cetane number with high accuracy even when a high-cetane fuel is used. The fuel property detector includes a cylinder pressure detection device; ignition delay time calculating device for calculating ignition delay time in accordance with the cylinder pressure; a high-cetane fuel judgment device for judging based on the ignition delay time whether the cetane number of an employed fuel is high; an ignition delay time extension device that increases the ignition delay time by correcting a control parameter for the internal combustion engine; an ignition delay time recalculation device for recalculating the ignition delay time based on cylinder pressure after the ignition delay time is increased by the ignition delay time extension device; and a cetane number calculation device for calculating the cetane number of the employed fuel based on the recalculated ignition delay time.

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