Engine control apparatus.

摘要

An engine control apparatus has an air flow rate measuring device (16) for measuring an intake air flow rate. A temperature sensing element (17) having a temperature char- acterisctic and constituting the device (16) is arranged in an intake pipe (13). The device (16) generates an output pulse signal having a pulse width T corresponding to the intake air flow rate. An engine control unit (18) has the one-dimensional map for storing the relationship between the engine speed N and the pulse width to of the signal corresponding to the air flow rate. This data to is read out from the one-dimensional map in accordance with the engine speed N. Subsequently, the data to is substracted from the data T to calculate a time duration t. The unit (18) also has a two-dimensional map for storing the relationship between each time duration t and the corresponding rate GIN in correspondence with each of the preset engine speeds. A corresponding rate G/N is read out from the two-dimensional map in response to the calculated time duration t. The resultant rate GIN is used to calculate fuel injection quantity.