| 摘要 |
PURPOSE:To improve the follow-up control for variation of the operational conditions of an engine, by applying output voltage signals of sensors for detecting the operational conditions of the engine to respective V/F conversion circuits, and executing data processing of the integral value obtained by integrating the output frequency given from the conversion circuit for a prescribed period. CONSTITUTION:Voltage signals 12 produced by a throttle-valve opening detecting sensor, an intake-pressure sensor, an engine-speed sensor, etc. are applied to respective V/F conversion circuits 13, which produce an output frequency 14 proportional to the voltage and apply it to a measuring counter 15. On the other hand, a measurement starting signal 17 and a measurement stopping signal 18 are applied from a measuring time control section 16 to the measuring counter 15 and a time counter 19. Integration of the output frequency 14 is started by the counter 15 when the signal 17 is applied and integration of the frequency 14 is stopped when the measurement stopping signal 18 is applied after passing of a prescribed period. The integral value 22 thus obtained and the integral time 23 required by the counter 19 for obtaining the integral value 22 are furnished to a control circuit 24, and a required pulse signal 25 is applied to an injection valve 6. |
