| 摘要 |
The invention provides a fuel injection control apparatus of an engine in which a temperature sensor for detecting an engine temperature is inexpensive and a wiring to a control unit is made unnecessary, thereby restricting a system cost low. A control unit ( 5 ) is integrally formed with a throttle chamber ( 3 ) corresponding to a peripheral device of an engine ( 1 ), a temperature sensor ( 6 ) detecting an engine temperature is directly attached to a substrate ( 5 b) of the control unit ( 5 ), and the temperature sensor ( 6 ) estimates an actual engine temperature on the basis of an engine peripheral temperature detected by the temperature sensor ( 6 ) by using a correlation data obtained by previously searching a correlation between the engine peripheral temperature detected by the temperature sensor ( 6 ) and the actual engine temperature under the same condition, thereby calculating a fuel increase amount and time for the increase amount necessary from a low temperature start to a warm-up finish.
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