Abstract: A machine includes a drive train with an electronically controlled transmission in communication with an electronic engine controller. The machine ground speed is limited by executing a vehicle speed limit algorithm in the electronic transmission controller in response to a sensed machine state. This algorithm generates an engine control message that is communicated to the electronic engine controller. The power output of the engine is reduced responsive to the engine control message. The machine responds by not exceeding a prescribed speed limit programmed into the electronic transmission controller. This vehicle speed limiting strategy is particularly applicable to machines without a vehicle speed limiting algorithm resident in the electronic engine controller.

Abstract: A method to integrate engine and exhaust aftertreatment control may include connecting an engine controller to an aftertreatment controller using a common data link protocol to provide a bidirectional data flow between the engine controller and the aftertreatment controller. The method may also include connecting the engine controller to one or more engine components. The method may also include connecting the aftertreatment controller to one or more aftertreatment components.