Control apparatus for internal combustion engine
AssigneeDenso Corporation
InventorsKeitarou Minami, Hideaki Ichihara, Hiroyuki Takezoe, Hiroshi Katsurahara
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Abstract
An intake air quantity information determining arrangement senses or computes one of an intake air quantity and a torque of an internal combustion engine as intake air quantity information. A misfire-avoidance control arrangement executes a misfire-avoidance control operation, which avoids misfire by controlling a throttle opening degree of a throttle valve such that a value of the intake air quantity information does not decrease below a normal combustion threshold value.
Claims9
A control apparatus for an internal combustion engine that is provided with an exhaust gas recirculation (EGR) device, which recirculates a portion of exhaust gas of the internal combustion engine as EGR gas to an intake passage of the internal combustion engine, the control apparatus comprising:
- an intake air quantity information determining arrangement that senses or computes one of an intake air quantity and a torque of the internal combustion engine as intake air quantity information;
- a normal combustion threshold value computing arrangement that computes a normal combustion threshold value based on an operational state of the internal combustion engine, wherein the normal combustion threshold value is a threshold value of the intake air quantity information required to be achieved to enable normal combustion in the internal combustion engine;
- and
- a misfire-avoidance control arrangement that executes a misfire-avoidance control operation, which avoids misfire by controlling a throttle opening degree of a throttle valve such that a value of the intake air quantity information does not decrease below the normal combustion threshold value.
Dependencies are inferred from the claim text.