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High pressure fuel controller for controlling high pressure fuel supply system such as common rail fuel supply system for diesel power machine, has valve-open determination device for determining that pressure relief valve is opened
High pressure fuel controller for controlling high pressure fuel supply system such as common rail fuel supply system for diesel power machine, has valve-open determination device for determining that pressure relief valve is opened
The high pressure fuel controller has a valve-open determination device for determining that the pressure relief valve is opened. A pump deliver command device is provided for commanding the fuel pump (11) for reducing the fuel delivery rate, when the valve-open determination device determines that the pressure relief valve (27) is opened. A fault diagnosing device is provided for diagnosing a defect of the high pressure fuel supply system on the basis of the fuel pressure detected by the fuel pressure detection device.
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