Signal conditioner and user interface
First Claim
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1. An engine control system, comprising:
- an engine control unit having an output to be coupled to an actuator; and
a signal modifying device having an input to be coupled to the output of the engine control unit and a modified output to be coupled to the actuator in parallel with the engine control unit output.
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Abstract
A signal modifying device, user interface, and method of modifying a signal. The signal modifying device includes a processor, a first input coupled to the processor and an output coupled to the processor. Instructions are stored within the processor that, when executed by the processor, cause the processor to provide a signal incident at the output that corresponds to a signal incident at the input.
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Citations
15 Claims
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1. An engine control system, comprising:
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an engine control unit having an output to be coupled to an actuator; and
a signal modifying device having an input to be coupled to the output of the engine control unit and a modified output to be coupled to the actuator in parallel with the engine control unit output. - View Dependent Claims (2, 3, 4)
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- 5. A signal modifying device having an input to be coupled to a fuel control output of an engine control unit carrying a fuel control signal and an output carrying a reduced fuel control signal to be coupled to a fuel injector.
- 7. A signal modifying device having an input to be coupled to a sensor providing a signal that affects a quantity of fuel delivered and an output carrying a signal indicating a lesser quantity of fuel than the sensor and to be coupled to an engine control unit.
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9. A method of modifying a set point that distinguishes two regions in a control table used in a signal modifying device, each region defined by a range of engine operation, comprising:
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selecting from the signal modifying device one set point distinguishing the separation of at least two ranges; and
inputting a value for the set point. - View Dependent Claims (10, 11)
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12. A method of modifying a control table used in a signal modifying device, comprising:
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selecting from the signal modifying device one of a plurality of regions of a control table;
inputting a modifier associated with the selected region of the control table from the signal modifying device; and
limiting the modifier such that the modifier will not produce an output signal to be output from the signal modifying device that varies from a signal to be input into the signal modifying device by more than a predefined portion of the input signal. - View Dependent Claims (13)
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14. A method of modifying a control table used in a signal modifying device, comprising:
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selecting from the signal modifying device one of a plurality of regions of a control table;
inputting a modifier associated with the selected region of the control table from the signal modifying device; and
resetting the modifier to a default value. - View Dependent Claims (15)
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Specification