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发明授权
CN105464824B 内燃机的燃压传感器异常诊断装置 失效 - 权利终止

内燃机的燃压传感器异常诊断装置
摘要：
本发明的燃压传感器异常诊断装置，在如下情况下诊断为燃压传感器发生异常，该情况是：由于产生了燃压传感器(71p)的检测值(Pfp_dtc)小于目标值(Pfp_tgt)的状态，从而增大燃料泵的燃料喷出量，结果燃料喷出量达到燃料喷出量的最大量，即便从燃料喷出量达到燃料喷出量的最大量的时刻开始经过规定期间(Tdiag_b_th)，检测值仍小于目标值。
摘要（英）：

The fuel pressure sensor abnormality diagnosis apparatus diagnoses that a fuel pressure sensor is abnormal in the case where, because a state where a detected value of the fuel pressure sensor is less than a target value occurs, a fuel discharge amount of a fuel pump is increased, and as a result, the fuel discharge amount reaches its maximum amount, and even if a predetermined period has elapsed since the fuel discharge amount reaches its maximum amount, the detected value is less than the target value.

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