Engine with torque control

An engine comprising a throttle controller operable in response to an intake air control command, a fuel controller operable in response to a fuel control command, and an engine controller for generating the intake air control command and the fuel control command. The engine controller determines a target equivalent. ratio for detected operating state of the engine, controls a change between stratified charge combustion and homogeneous charge combustion, delays the target equivalent ratio, determines the intake air control command and the fuel control command in response to the delayed target equivalent ratio.