Aisan Kogyo Kabushiki Kaisha

Toyoto Jidosha Kabushiki Kaisha

Yoshiyasu Itoh

Katsumi Ishida

Hiroyuki Makisako

An allocation map stored in a ROM in an ECU is set corresponding to the kinds of fuel injection valves. Therefore, at the time of incorporating fuel injection valves into a diesel engine, it is possible to freely set how injection correction amount data read from a two-dimensional code by a writing device is allocated in an injection correction amount map in steps Sand S, separately for the individual kinds of fuel injection valves. Since the injection correction amount map in which the injection correction amount data is arranged with a distribution of density corresponding to the kinds of fuel injection valves, it is possible to change and set correction points with high degree of freedom even though the amount of data recordable in the two-dimensional code is limited. Therefore, high-precision data maps can be used separately for the individual kinds of fuel injection valves.

Data map forming method, data map formation-purpose information record medium forming method and apparatus

An electronic throttle control apparatus is provided with an electronic throttle ( ) including a throttle valve ( ) which is opened and closed by a motor ( ), and a microcomputer ( ) which controls the motor ( ). The microcomputer ( ) calculates a deviation between a target opening degree which is set by detection of an accelerator sensor ( ) and an actual opening degree which is detected by a throttle sensor ( ) to calculate a motor control amount in accordance with the deviation and a control gain in correspondence to the deviation. The microcomputer sets a control gain which becomes smaller as the deviation becomes larger, and limits the control gain by the previous control gain at a time when the control gain is larger than the previous control gain. The microcomputer ( ) cancels the limit of the control gain when the calculated actual opening degree change is reduced from a predetermined value.

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Toyota, Japan

Yoshiyasu Itoh