公开(公告)号：US20070169748A1

公开(公告)日：2007-07-26

申请号：US10587576

申请日：2005-03-24

申请人： Shigeki Nakayama ,  Koji Kitano ,  Taro Aoyarna ,  Ryo Hasegawa ,  Takashi Koyama ,  Kazuhisa Inagaki ,  Yoshifumi Wakisaka ,  Matsuei Ueda ,  Kiyomi Nakakita

发明人： Shigeki Nakayama ,  Koji Kitano ,  Taro Aoyarna ,  Ryo Hasegawa ,  Takashi Koyama ,  Kazuhisa Inagaki ,  Yoshifumi Wakisaka ,  Matsuei Ueda ,  Kiyomi Nakakita

IPC分类号： F02M7/00 ,  F02D41/00

CPC分类号： F02D35/028 ,  F02D35/02 ,  F02D35/026 ,  F02D41/3035 ,  F02D41/402 ,  F02D2041/1433 ,  Y02T10/128

摘要： A gas-mixture-ignition-time estimation apparatus for an internal combustion engine estimates the temperature of a premixed gas mixture for PCCI combustion (i.e., cylinder interior temperature Tg), while relating it to the angle CA, on the basis of a state quantity of the cylinder interior gas at the time of start of compression (CAin) (heat energy of the cylinder interior gas at the time of start of compression), the amount of a change in the state quantity of the cylinder interior gas attributable to compression in a compression stroke (minute piston work), and the heat generation quantity of a cool flame generated in PCCI combustion prior to autoignition (hot flame) (cool flame heat generation quantity Aqlto). A time when the cylinder interior temperature Tg reaches a predetermined autoignition start temperature Tig is estimated as an autoignition start time (Caig) of the premixed gas mixture related to PCCI combustion. Since the cool flame heat generation quantity Oqlto is taken into consideration, the autoignition start time related to PCCI combustion can be estimated accurately.

摘要翻译： 用于内燃机的气体混合燃烧时间估计装置估计用于PCCI燃烧的预混合气体混合物的温度（即气缸内部温度Tg），同时将其与角度CA相关联，基于状态量 压缩开始时的气缸内部气体（CAin）（压缩开始时的气缸内部气体的热能），由压缩引起的气缸内部气体的状态量的变化量 压缩行程（分钟活塞），以及自燃（热焰）之前的PCCI燃烧产生的冷焰（冷焰产生量Aqlto）的发热量。 气缸内部温度Tg达到预定自燃起始温度Tig的时间被估计为与PCCI燃烧相关的预混合气体混合物的自燃起始时间（Caig）。 由于考虑了冷焰发热量Oqlto，因此可以准确地估计与PCCI燃烧有关的自燃开始时间。