Fuel injection control apparatus for internal combustion engine and method for operating fuel injection control apparatus for internal combustion engine
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United States of America Patent
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Nov 26, 2019
Grant Date -
Mar 28, 2019
app pub date -
Aug 28, 2018
filing date -
Sep 25, 2017
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Abstract
A fuel injection control apparatus for an internal combustion engine includes a low pressure fuel pump, a low pressure fuel passage, a high pressure fuel pump, a high pressure fuel passage, a fuel injection valve, a high pressure controller, and a low pressure controller. The low pressure controller calculates a feedforward correction amount that increases as a request injection amount of the fuel injection valve increases and an increase rate of the high pressure target value increases when a high pressure target value increases. The low pressure controller calculates a feedback correction amount based on a low-side pressure deviation when the high pressure target value increases. The low pressure controller controls driving of the low pressure fuel pump based on a sum of the feedforward correction amount and the feedback correction amount.
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