发明名称 |
Negative pressure sensor abnormality detection apparatus, control apparatus for internal combustion engine and control system |
摘要 |
A negative pressure sensor abnormality detection apparatus includes a negative pressure sensor that outputs a signal corresponding to a negative pressure that a negative pressure pump generates, the negative pressure assisting a vehicle driver's brake operation; a negative pressure detection part that detects the negative pressure based on the signal that is output by the negative pressure sensor; a number-of-rotations counting part that counts the number of rotations of the negative pressure pump; and an abnormality determination part that determines that the negative pressure sensor is in an abnormal condition if, under a condition where a change in the driver's brake operation falls within a predetermined range, a change in the negative pressure detected by the negative pressure detection part along with an increase in the number of rotations counted by the number-of-rotations counting part is out of a predetermined range. |
申请公布号 |
US9527492(B2) |
申请公布日期 |
2016.12.27 |
申请号 |
US201514946076 |
申请日期 |
2015.11.19 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
Kakehi Jumpei;Moriya Kouki |
分类号 |
B60T7/12;B60T17/22;F02D41/04;F02D41/06;F02D41/26;B60T8/171;B60T8/88 |
主分类号 |
B60T7/12 |
代理机构 |
Oliff PLC |
代理人 |
Oliff PLC |
主权项 |
1. A negative pressure sensor abnormality detection apparatus comprising:
a negative pressure sensor that outputs a signal corresponding to a negative pressure that a negative pressure pump generates, the negative pressure assisting a vehicle driver's brake operation; a negative pressure detection part that detects the negative pressure based on the signal that is output by the negative pressure sensor; a number-of-rotations counting part that counts the number of rotations of the negative pressure pump; and an abnormality determination part that determines that the negative pressure sensor is in an abnormal condition if, under a condition where a change in the driver's brake operation falls within a predetermined range, a change in the negative pressure detected by the negative pressure detection part along with an increase in the number of rotations counted by the number-of-rotations counting part is out of a predetermined range. |
地址 |
Toyota JP |