Back to results
US 2020/0340419 A1Published application
Method and system of correcting fuel injection quantity of vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorMu Young Choi
Life of this patent
Estimating the term…
Abstract
A method of correcting a fuel injection quantity of a vehicle corrects the fuel injection quantity prior to activation of a lambda sensor when an engine is turned on. Additionally, the method increases a speed for activating a catalyst to reduce a harmful substance in exhaust gas at the beginning of engine starting.
Claims14
A method of correcting a fuel injection quantity of a vehicle, comprising:
- detecting, by a controller, an entrance into a catalyst heating period after the vehicle is turned on;
- correcting, by the controller, a fuel injection quantity to a pre-learned correction value in response to detecting the entrance into the catalyst heating period;
- detecting, by the controller, whether a current lambda value corresponds a target lambda value when a lambda sensor is activated after the vehicle is turned on;
- and
- storing, by the controller, the correction value without change when a difference between the current lambda value and the target lambda value is within a preset lambda allowable range and adjusting the correction value based on the difference between the current lambda value and the target lambda value when the difference between the current lambda value and the target lambda value is beyond the preset lambda allowable range.
2 more elements
The method of claim 8, further comprising:
- determining, by the controller, a difference between the general learning value and the correction value;
- and
- storing, by the controller, the correction value without change when the difference between the general learning value and the correction value is within a preset learning allowable range.
A system of correcting a fuel injection quantity of a vehicle, comprising:
- a memory configured to store program instructions;
- and
- a processor configured to execute the program instructions, the program instructions when executed configured to:
- detect an entrance into a catalyst heating period after the vehicle is turned on;
- correct a fuel injection quantity to a pre-learned correction value in response to detecting the entrance into the catalyst heating period;
- detect whether a current lambda value corresponds a target lambda value when a lambda sensor is activated after the vehicle is turned on;
- and
- store the correction value without change when a difference between the current lambda value and the target lambda value is within a preset lambda allowable range and adjust the correction value based on the difference between the current lambda value and the target lambda value when the difference between the current lambda value and the target lambda value is beyond the preset lambda allowable range.
5 more elements
Dependencies are inferred from the claim text.