Patent ID: 9453469
Filing Date: 2016-09-27
CPC Classification: F02D,Y02T

Claim Text:
1. An engine operating method via an electronic controller in combination with an engine of a vehicle including a central throttle and a poll throttle, the vehicle driven by a driver, comprising: adjusting an intake manifold pressure via the central throttle responsive to a desired cylinder air charge in a first throttle control mode and adjusting an intake port pressure via the port throttle responsive to the desired cylinder air charge in a second throttle control mode; and operating the engine in the first throttle control mode at a first steady state BMEP and transitioning to operating the engine in the second throttle control mode at a second steady state BMEP in response to engine operating condition changes, where the central throttle is closed during the transition by more than the central throttle is open in the first throttle control mode and the second throttle control mode, where a steady state central throttle opening amount is determined by the controller based on a BMEP or torque request by the driver via an accelerator pedal sending a signal to the controller, the controller initiating the transition from the first throttle control mode to the second throttle control mode in response to the BMEP or torque request.