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(11) | EP 2 610 467 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Engine control device and engine control method |
(57) An engine of a vehicle is provided with an engine control device including an idle
speed control (ISC) device provided for an intake bypass passage connecting an upper
side and a lower side of a throttle valve installed in an intake passage so as to
control an idle speed of the engine by adjusting an amount of air flowing through
the intake bypass passage at a time of idling of the engine. The engine control device
includes: a throttle opening degree sensor disposed in the intake passage and configured
to detect a degree of opening of the throttle valve; an intake pressure sensor disposed
in the intake passage and configured to detect an intake negative pressure at the
lower side of the throttle valve; and a control unit configured to control an output
of the engine. The control unit is configured to perform an engine output suppression
control of suppressing the output of the engine after determining that an ISC valve
of the ISC device is abnormal in a case where the degree of opening of the throttle
valve detected by the throttle opening degree sensor is within a predetermined range
and when the intake negative pressure detected by the intake pressure sensor is low
compared with a threshold value.
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