公开(公告)号：US06427670B2

公开(公告)日：2002-08-06

申请号：US09838184

申请日：2001-04-20

申请人： Hiroyuki Goto ,  Shusuke Akazaki ,  Hideharu Yamazaki ,  Yoshihito Sakurai

发明人： Hiroyuki Goto ,  Shusuke Akazaki ,  Hideharu Yamazaki ,  Yoshihito Sakurai

IPC分类号： F02B4300

CPC分类号： F02D19/022 ,  F02B43/00 ,  F02D19/025 ,  F02D19/027 ,  F02D41/0027 ,  F02D2041/226 ,  F02M21/0215 ,  F02M21/0242 ,  F02M21/0278 ,  Y02T10/32

摘要： A first cutoff valve 24 and a second cutoff valve 41 are closed in a state in which an internal combustion engine 1 is stopped, and a reducing amount of a pressure P0 in a high pressure passageway 11 after the passage of a predetermined decision time T0 and a reducing amount of a pressure P2 in a low pressure passageway 12 after the passage of a predetermined decision time T2 are measured. When the reducing amount of the first pressure P0 is equal to or larger than a predetermined reducing amount &Dgr;P0, it is decided that a leakage is generated in the high pressure passageway 11. When the reducing amount of the second pressure P2 is equal to or larger than a predetermined reducing amount &Dgr;P2, it is decided that a leakage is generated in the low pressure passageway 12.

摘要翻译： 第一截止阀24和第二截止阀41在内燃机1停止的状态下被封闭，并且在经过预定的判定时间T0之后的高压通道11中的压力P0的减小量和 测量经过预定判定时间T2后低压通路12内的压力P2的减少量。 当第一压力P0的减少量等于或大于预定减少量DELTAP0时，判定在高压通道11中产生泄漏。当第二压力P2的减少量等于或大于 超过预定的减少量DELTAP2，则判定在低压通路12中产生泄漏。