Patent ID: 8903634

Claim:
An engine control apparatus which comprises a governor control mechanism for keeping an engine frequency constant, configured to decide a “presence” corresponding to a load-absent state or an “absence” corresponding to a load-present state of an engine load by a throttle aperture, and forcibly configured to change an engine frequency to a predetermined frequency depending on the presence or absence of the load, comprising: an engine controlling unit ( 10 ) for controlling fuel supply to an engine ( 1 ); an engine temperature detecting unit ( 4 ) for detecting an engine temperature of said engine; and a threshold changing unit ( 10 a ) for changing a throttle aperture used as a threshold for deciding the “presence” or “absence” of the engine load based on the engine temperature detected by said engine temperature detecting unit ( 4 ); said threshold changing unit sets a threshold Tha and a threshold THb; said threshold Tha is a value of the throttle aperture used to decide whether the engine load is “present” based on the load-absent state, and the threshold changing unit changes the threshold Tha to decrease the value of the threshold Tha in response to an increase in the temperature detected by the engine temperature detecting unit; and said threshold Thb is a value of the throttle aperture used to decide whether the engine load is “absent” based on the load-present state, and the threshold changing unit changes the threshold Thb to decrease the value of the threshold Thb in response to an increase in the temperature detected by the engine temperature detecting unit.