| 摘要 |
A system for controlling exhaust gas recirculation in an internal combustion engine, comprising means for performing exhaust gas recirculation in a first required value when an engine temperature is at a first predetermined level or higher, means for stopping exhaust gas recirculation when said engine temperature reaches a second predetermined level or lower, the second predetermined level being lower than the first predetermined level, and means for performing exhaust gas recirculation in a second required value which is lower than the first required value, within a temperature range between first and second predetermined levels, the second required value increasing as a function of the engine temperature in response to increase in the engine temperature, thereby preventing exhaust gas recirculation from being abruptly carried out in large amounts so as to improve the driveability of a motor vehicle on which the engine is mounted.
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