Throttle Valve Controller Device for Internal Combustion Engine
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United States of America Patent
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Issued Date -
Jun 25, 2020
app pub date -
May 11, 2018
filing date -
Jun 1, 2017
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Abstract
There is provided a novel throttle valve controller device for an internal combustion engine that is capable of accurately producing a target torque for the internal combustion engine. The present invention includes a target fresh intake air flow rate calculating section that calculates a target fresh intake air flow rate passing through a throttle valve, an EGR gas flow rate calculating section that calculates an estimated EGR gas flow rate passing through the throttle valve, a target throttle intake gas flow rate calculating section that calculates a target intake gas flow rate passing through the throttle valve on the basis of the target fresh intake air flow rate and the estimated EGR gas flow rate, and a target throttle valve opening calculating section that calculates a target throttle valve opening from the target intake gas flow rate. Since the target throttle opening is set based on the target fresh intake air flow rate and the through-throttle EGR gas flow rate passing through the throttle valve, a target torque can be produced accurately.
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