Compensating displacement on demand system response offset due to aging
AssigneeGM Global Technology Operations LLC
InventorsWilliam Albertson, Mike Mc Donald
Life of this patent
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Abstract
A response time compensation system for controlling engine operation in activated and deactivated modes in a displacement on demand engine includes a LOMA system that regulates pressurized fluid flow to switch engine operation between the activated and the deactivated modes and a count module that monitors a cycle count of the LOMA system. A response factor module determines a response factor of the LOMA system based on the cycle count and a compensation module generates a compensated response time of the LOMA system based on the response factor.
Claims21
A response time compensation system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
- a LOMA system that regulates pressurized fluid flow to switch engine operation between said activated and said deactivated modes;
- a count module that monitors a cycle count of said LOMA system;
- a response factor module that determines a response factor of said LOMA system based on said cycle count;
- and
- a compensation module that generates a compensated response time of said LOMA system based on said response factor.
An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
- a lifter oil manifold assembly (LOMA) system having a solenoid that regulates pressurized fluid flow to other components therein;
- and
- a control module that monitors a cycle count of said LOMA system, that determines a response factor based on said cycle count and that determines a compensated response time of said LOMA system based on said response factor.
A method of controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
- monitoring a cycle count of a LOMA system that regulates pressurized fluid flow to switch engine operation between said activated and said deactivated modes;
- determining a response factor of said LOMA system based on said cycle count;
- and
- generating a compensated response time of said LOMA system based on said response factor.
A method of compensating a system response time for a LOMA system that regulates engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
- generating test data for an equivalent LOMA system;
- determining a relationship between a cycle count of said equivalent LOMA system and an equivalent response time of said equivalent LOMA system;
- monitoring a cycle count of said LOMA system;
- determining a response factor of said LOMA system based on said cycle count and said relationship;
- and
- generating a compensated response time of said LOMA system based on said response factor.
Dependencies are inferred from the claim text.