Method and apparatus for limiting engine operation in a programmable range
First Claim
1. A method for limiting operating of an engine with an electronic control module and a throttle control in at least one speed range determined to be undesirable, sensing when said engine operation is at a first threshold of said range, responding to said sensing by generating a command for a changed operation for said engine different from said threshold, and commanding a powertrain output adjustment for continued operation outside said range defined by said first threshold and a second threshold in a time period subsequent to said sensing step.
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Accused Products
Abstract
An engine control system for a compression ignition engine employs a microprocessor-based controller that detects engine operation in a speed range previously determined to be undesirable, and responding to the detection by changing operation of the engine. In the preferred embodiment, the controller commands a parameter for adjusting engine operation to reach a different speed outside of first and second thresholds defining the undesirable range in a time period subsequent to the detection.
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Citations
19 Claims
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1. A method for limiting operating of an engine with an electronic control module and a throttle control in at least one speed range determined to be undesirable,
sensing when said engine operation is at a first threshold of said range, responding to said sensing by generating a command for a changed operation for said engine different from said threshold, and commanding a powertrain output adjustment for continued operation outside said range defined by said first threshold and a second threshold in a time period subsequent to said sensing step.
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14. An engine control for a compression-ignition internal combustion engine that switches engine operation out of a speed range defined between first and second thresholds, the control comprising:
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a sensor detecting when said engine operation passes said first threshold, a controller input responsive to said detecting for processing a predetermined response, and a controller commanding a change to an engine operating parameter to adjust engine operation to a level outside said range defined by said first and second thresholds in a time period subsequent to said sensing step. - View Dependent Claims (15, 16)
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17. A computer readable storage medium having data stored therein representing instructions executable by a computer to control a compression ignition internal combustion engine installed in a vehicle to perform a speed range avoiding adjustment feature, the computer readable storage medium comprising:
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instructions for detecting when a signal representing engine speed corresponds to a range of speeds defined between upper and lower thresholds of said speed range;
instructions for responding to said detecting by generating a command for operating said engine at a level outside said range, and instructions for commanding an engine parameter change to adjust engine operation outside of said range defined between said upper and said lower thresholds in a time period subsequent to said detecting. - View Dependent Claims (18, 19)
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Specification