| 摘要 |
In an electrical fuel injector which comprises an air flow meter for detecting an amount of air intake to an internal combustion engine, a revolution counter for measuring the rate of rotations of the internal combustion engine, and an electronic circuit adapted to arithmetically control an opening time of an injection valve for injecting fuel into the internal combustion engine based on output signals from both air flow meter and revolution counter, a digital filter is provided which has a coefficient variable in accordance with drive conditions of the internal combustion engine, so that the output signal from the air flow meter is applied to the electronic circuit through the digital filter.
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