Systems and methods for cylinder deactivation operation control
AssigneesCummins Inc., Tula Technology, Inc.
InventorsJ. Steven Kolhouse, Ross A. Phillips
Life of this patent
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Abstract
A method of controlling a fixed cylinder deactivation (CDA) system of an engine system is provided. The method includes: deactivating, by a controller, a cylinder of the engine system to operate the engine system in a fixed CDA mode; determining, by the controller, a temperature of an injector tip nozzle associated with the cylinder; comparing, by the controller, the temperature of the injector tip nozzle to a threshold temperature; and in response to determining that the temperature of the injector tip nozzle is greater than the threshold temperature, activating, by the controller, the cylinder.
Claims20
A method of controlling a fixed cylinder deactivation (CDA) system of an engine system, the method comprising:
- deactivating, by a controller, a cylinder of the engine system to operate the engine system in a fixed CDA mode;
- determining, by the controller, a temperature of an injector tip nozzle associated with the cylinder;
- comparing, by the controller, the temperature of the injector tip nozzle to a threshold temperature;
- and
- in response to determining that the temperature of the injector tip nozzle is greater than the threshold temperature, activating, by the controller, the cylinder.
A method of controlling a fixed cylinder deactivation (CDA) system of an engine system, comprising:
- deactivating, by a controller, a cylinder of the engine system to operate the engine system in a fixed CDA mode;
- determining, by the controller, an amount of lubricant on or associated with an injector needle of the engine system;
- comparing, by the controller, the amount of lubricant on or associated with the injector needle to a threshold lubricant amount;
- and
- in response to determining that the amount of lubricant on or associated with the injector needle is greater than the threshold lubricant amount, activating, by the controller, the cylinder.
A system, comprising:
- a controller coupled to an engine system, the controller configured to:
- deactivate a cylinder of the engine system to operate the engine system in a fixed CDA mode;
- determine a characteristic associated with an injector of the cylinder of the engine system;
- compare the characteristic to a threshold characteristic;
- and
- in response to determining that the characteristic is greater than the threshold characteristic, activate the deactivated cylinder.
Dependencies are inferred from the claim text.