| 摘要 |
Disclosed is a method for controlling an engine during the malfunctioning of a coolant temperature sensor. The method includes the steps of determining whether the coolant temperature sensor is malfunctioning by using information supplied from various elements of a vehicle operation sensor; determining whether the engine is stalled when the coolant temperature sensor is malfunctioning; setting an initial value of information on the coolant temperature as a target value when the engine is stalled, and determining whether a start mode is canceled when the engine is determined to he operating; determining whether an air temperature sensor (ATS) is malfunctioning when the start mode is not canceled; setting, when the ATS is outputting information normally, the information on the air temperature as a target value, and performing addition and subtraction operations on the initial value of information and updating and learning the initial value of information with new information until the initial value of information reaches the target value of information; and outputting an engine control signal according to newly learned information on the coolant temperature, and when the newly learned information reaches the target value of information, terminating the updating of the initial value of information, and outputting an engine control signal to start the engine and to control idling of the engine after the engine is started by using the target value of information as the final learned information on the coolant temperature.
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