Vehicular power take-off control
AssigneeGeneral Motors Corporation
InventorsPaul Bauerle, Kerfegar Katrak, Barbara Shuler, Mark Costin
Life of this patent
Estimating the term…
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.
Claims8
Method for power take-off control integrity diagnosis in a vehicle including a throttle controlled engine and a plurality of power take-off control switches, comprising:
- receiving power take-off engine control requests by a first processor adapted to establish throttle position in response to said requests;
- providing power take-off control switch data to a second processor;
- and
- inferring validity of said power take-off engine control requests from said power take-off switch data.
Method for controlling an engine in a vehicular powertrain including a power take-off to effect power take-off control in accordance with a plurality of power take-off switch settings comprising:
- providing power take-off engine control commands from a power take-off control to an engine control in a first processing means, said engine control adapted to effect engine control functions in accordance with said power take-off engine control commands;
- providing a predetermined first power take-off status signal from a power take-off operator interface to said power take-off control indicative of whether power take-off engine control is being requested at the operator interface;
- providing operator interface data to a second processing means;
- determining with the second processing means a second power take-off status signal from said operator interface data;
- ignoring power take-off engine control commands where said first and second power take-off status signals do not indicate an equivalent status.
Method for controlling an engine in a vehicular powertrain including a power take-off to effect power take-off control in accordance with a plurality of power take-off switch settings comprising:
- providing a first processor means including a power take-off control and an engine control, said engine control adapted to receive power take-off engine control commands from said power take-off control and effect engine control functions in accordance with said power take-off engine control commands;
- providing a predetermined first power take-off status signal to said power take-off control indicative of whether power take-off engine control is requested;
- providing power take-off switch state data to a second processor means;
- determining with the second processor means a second power take-off status signal indicative of whether power take-off engine control is requested from said power take-off switch state data;
- providing said second power take-off status signal to said first processor means;
- and,
- disallowing engine control in accordance with power take-off engine control commands where either of said first and second power take-off status signals indicates power take-off engine control is not requested.
Dependencies are inferred from the claim text.