| 摘要 |
A throttle control apparatus for an internal combustion engine capable of controlling an opening degree of an electronic control type throttle with high accuracy by employing an inexpensive A/D converter. The apparatus includes a throttle opening degree detecting means for detecting opening degree of the electronic control type throttle (1, 2) for controlling operation of the engine, and a means (11) for controlling the opening degree to a target value in dependence on operation state of the engine. The throttle opening degree detecting means includes a throttle opening degree sensor (3) for generating a sensor voltage corresponding to the opening degree of the electronic control type throttle, an offset means (101, . . . , 104) for transforming the sensor voltage into a plurality of offset-weighted voltages (V1, . . . , V4), an A/D converter (12) for performing A/D conversion of the plurality of offset-weighted voltages (V1, . . . , V4), and an adder means (11) for performing processing of adding the offset-weighted voltages (V1 to V4) undergone the A/D conversion, wherein a sum value resulting from addition of the offset-weighted voltages (V1, . . . , V4) is detected as the opening degree of the throttle destined to be controlled.
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