| 摘要 |
PURPOSE:To permit the always proper knocking control by setting the output of a noise level detector to an optimum value even in the case when a transmission is in speed-change control by controlling the knock signal judging characteristic of a knock-signal judging means in correspondence with the control of the transmission of an internal-combustion engine. CONSTITUTION:When control for a transmission is carried-out for shift-up operation during acceleration, the contact point of a shift-up switch 21 is closed, and a level reducing device 22 is operated to output the noise level voltage which is formed by reducing the output of a noise level detector 5, and said noise level voltage is input into a comparator 6. Therefore, the noise level inputted into the comparator 6 when the transmission is shifted-up is controlled by the voltage smaller than the output of the noise level detector 5, and the setting to the voltage corresponding to a prescribed engine revolution speed is permitted. Therefore, the output value of the noise level detector 5 can be set to an optimum value even in the case when the transmission is speed-change controlled, and the aimed knocking detection is always permitted, and the proper knocking control is permitted. |
