Patent ID: 9448136
Filing Date: 2016-09-20
CPC Classification: G01M

Claim Text:
1. A sensor control apparatus including a computation section which receives from a gas sensor a sensor output signal corresponding to the concentration of a specific gas component contained in a gas flowing through a flow passage provided in an internal combustion engine, and a pressure signal output from a pressure sensor which measures the pressure of the gas, the computation section computing a specific component concentration which represents the concentration of the specific gas component and is corrected based on the pressure signal in order to eliminate an influence of the pressure of the gas on the sensor output signal, the sensor control apparatus comprising: a response adjustment section which adjusts a response rate of at least one of the sensor output signal and the pressure signal before being input to the computation section, the response rate exhibiting a time variation of the corresponding signal to a change in the pressure of the gas, such that the response rate of the sensor output signal or the response rate of the pressure signal, whichever is faster, approaches the slower of the response rate of the sensor output signal and the response rate of the pressure signal; and a delay adjustment section which adjusts a delay time of at least one of the sensor output signal and the pressure signal before being input to the computation section, the delay time being a time between a point at which the pressure of the gas changes and a point at which the corresponding signal begins to respond to the change in the pressure, such that the delay time of the sensor output signal or the delay time of the pressure signal, whichever is shorter, approaches the longer of the delay time of the sensor output signal and the delay time of the pressure signal.