Abstract: A control system for regulating operation of a vehicle having a transmission driven by an engine during a cruise control mode includes a first module that determines an operating point of the vehicle and that compares the operating point to one of a shift line and a torque converter clutch (TCC) release line. A second module regulates a throttle of the engine to maintain the operating point a threshold distance from the one of the shift line and the TCC release line, when the operating point is at the threshold distance.

Abstract: Apparatus are provided for robust power take off (PTO) and/or cruise enable. The apparatus includes a control module for PTO enable having a first input connected to one of a first reference voltage and a second reference voltage, and a second input connected to one of the first reference voltage and the second reference voltage. An inverse reference voltage operator is connected to both of the inputs and configured such that the second input is connected to the second reference voltage when the first input is connected to the first reference voltage and the second input is connected to the first reference voltage when the first input is connected to the second reference voltage. Based on the received voltage at the first and second inputs, the control module enables/disables PTO and/or cruise.

Abstract: An engine control system includes an engine with an output shaft. A power take-off device interfaces with the output shaft and provides rotational power to an auxiliary device. A user input device includes a first engine speed control that commands an increase in engine speed by a first amount to increase the rotational power to the auxiliary device when a user selects the first engine speed control. A second engine speed control commands an increase in engine speed by a second amount that is greater than the first amount to increase the rotational power to the auxiliary device when the user selects the second engine speed control. The user input device includes a speed cancellation control that commands a reversal of a net increase in the speed of the engine that is commanded via the user input device when the user selects the speed cancellation control.

Abstract: A vehicular powertrain includes a throttle controlled engine and a power take-off system for driving external loads. A power take-off control executed in a first processor seeks to have engine control authority in accordance with operator invoked switch states including an enable switch and set switches. Power take-off switch data is provided to a second processor to determine the power take-off system status and provide an integrity diagnosis of the power take-off system.

Abstract: Apparatus are provided for PTO related engine control having improved failure modes and communication with PCM or ECM independent of input architecture. The apparatus includes a control module for a vehicle powertrain having an input circuit receiving signals corresponding to a four-bit code, and a processor connected to the input circuit and outputting a control signal corresponding to one of a plurality of four-bit coded engine control states. The engine control states are coded such that potential errors in communication between the control module and powertrain, and their resulting effects on powertrain operation, are minimized. For example, a single bit change during communication does not result in a transition from one engine control state to another engine control state.

Abstract: Apparatus are provided for PTO related engine control having improved failure modes and communication with PCM or ECM independent of input architecture. The apparatus includes a control module for a vehicle powertrain having an input circuit receiving signals corresponding to a four-bit code, and a processor connected to the input circuit and outputting a control signal corresponding to one of a plurality of four-bit coded engine control states. The engine control states are coded such that potential errors in communication between the control module and powertrain, and their resulting effects on powertrain operation, are minimized. For example, a single bit change during communication does not result in a transition from one engine control state to another engine control state.

Abstract: Apparatus are provided for robust power take off (PTO) and/or cruise enable. The apparatus includes a control module for PTO enable having a first input connected to one of a first reference voltage and a second reference voltage, and a second input connected to one of the first reference voltage and the second reference voltage. An inverse reference voltage operator is connected to both of the inputs and configured such that the second input is connected to the second reference voltage when the first input is connected to the first reference voltage and the second input is connected to the first reference voltage when the first input is connected to the second reference voltage. Based on the received voltage at the first and second inputs, the control module enables/disables PTO and/or cruise.

Abstract: A throttle limit control for an internal combustion engine throttle control is disclosed. Rate limiting is applied to prevent excessive rates of change in throttle actuation. Throttle pedal authority is continually maintained and throttle headroom is not compromised thereby. Application to various systems including conventional and adaptive cruise systems and power take-off systems is envisioned.

Abstract: A vehicular powertrain includes a throttle controlled engine and a power take-off system for driving external loads. A power take-off control executed in a first processor seeks to have engine control authority in accordance with operator invoked switch states including an enable switch and set switches. Power take-off switch data is provided to a second processor to determine the power take-off system status and provide an integrity diagnosis of the power take-off system.