Power take-off state and engine speed request

Details Power take-off state and engine speed request Power take-off state and engine speed request

2006-08-08

2006-08-08

Wolfe, Willis R. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S114000, C701S115000

Reexamination Certificate

active

07089105

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.

REFERENCES:
patent: 4236213 (1980-11-01), Richardson
patent: 5668312 (1997-09-01), Kaman
patent: 5775296 (1998-07-01), Goras et al.
patent: 6493627 (2002-12-01), Gallagher et al.

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