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(11) | EP 2 058 489 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Control system for internal combustion engine |
| (57) In a system for controlling an internal combustion engine (12) mounted on a vehicle
(10) and having an actuator (44) that drives a throttle valve (24) installed in an
intake pipe (22) of the engine, it is configured to comprise a throttle opening sensor
(52) that produces an output indicative of opening of the throttle valve (24), and
to determine an output of the throttle opening sensor (52) at a time when the throttle
valve (24) is driven to a fully-closed position by the actuator as a full-close reference
TPS_fully_close; determine a full-open reference TPS_wot corresponding to a fully-opened
position of the throttle valve (24) based on the determined full-close reference;
and control the operation of the actuator (44) such that the throttle valve opening
becomes a desired value that is determined within a range defined by the full-close
reference and the full-open reference. With this, the full-close reference and full-open
reference can be determined accurately and promptly.
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