| 摘要 |
PROBLEM TO BE SOLVED: To reduce an error in an air-fuel ratio when an engine condition returns to a fuel injecting condition from a fuel cut condition in an engine having an electronic control throttle. SOLUTION: This engine controlling device holds a throttle opening indicated value THOUT during a set time determined by the number of steps of fuel cut return control TMCUTR to a throttle opening indicated value right before returning to a fuel injection condition, and performs a delay control for setting the throttle opening indicated value THOUT based on the accelerator position ACP (k-TMTHDY) that has been the set time before, after the set time has passed when a condition returns to the fuel injection to the fuel cut, which prevents exhaust emission from deteriorating caused by occurrence of a big error in an air-fuel ratio at returning to the fuel injection condition and reduces deterioration of the follow-up property of the amount of throttle valve operations for the amount of accelerator operations. COPYRIGHT: (C)2004,JPO
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