| 摘要 |
PROBLEM TO BE SOLVED: To solve problems that misfire etc. occurs due to inclination of an air fuel ratio to a lean side when absolute temperature or outdoor air temperature is high and NOx emission amount is increased due to inclination of the air fuel ratio to a rich side when absolute temperature or outdoor air temperature is low, since the air fuel ratio of air fuel mixture supplied to an engine varies with change in oxygen concentration in the atmosphere, and specifically, the air fuel ratio becomes lean (the state where the ratio of fuel in the air fuel mixture is small) when the absolute temperature or the outdoor temperature is high. SOLUTION: An ECU 10 determines whether or not a GHP performs cooling operation (S110). When it is determined that the GHP performs cooling operation, the ECU 10 selects a map of a target PI value for high temperature (high humidity) of an atmospheric condition (S120). Meanwhile, when it is determined that the GHP performs heating operation, the ECU 10 selects a map of a target PI value for low temperature (low humidity) of the atmospheric condition (S125). COPYRIGHT: (C)2005,JPO&NCIPI
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