Patent ID: 7673612

Claim:
An engine control apparatus which obtains a target engine torque based on an accelerator operation amount and performs engine control such that an output torque of an engine becomes equal to the target engine torque, comprising: a nominal calculating portion that calculates a nominal maximum engine torque, nominal minimum engine torque and a nominal target engine torque based on characteristics of engine torque with respect to an engine speed and the accelerator operation amount obtained in advance under a predetermined environmental condition; a correcting portion that obtains an environmentally corrected maximum engine torque and an environmentally corrected minimum engine torque according to the environmental condition; and a calculating portion that calculates the target engine torque by interpolating the target engine torque between the environmentally corrected maximum engine torque and the environmentally corrected minimum engine torque such that the ratio of the difference between the nominal maximum engine torque and the nominal minimum engine torque to the difference between the nominal target engine torque and the nominal minimum engine torque becomes essentially equal to the ratio of the difference between the environmentally corrected maximum engine torque and the environmentally corrected minimum engine torque to the difference between the target engine torque and the environmentally corrected minimum engine torque, wherein the correcting portion obtains the environmentally corrected maximum engine torque by correcting the nominal maximum engine torque based on a correction coefficient according to the environmental condition.