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US 2019/0024604 A1Published application
Diesel engine dual fuel injection strategy
AssigneeFord Global Technologies, LLC
InventorsEric Matthew Kurtz, Daniel Joseph Styles
Life of this patent
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Abstract
Methods and systems for supplying fuel to a diesel engine during a cycle of a cylinder are described. In one example, a cylinder is supplied fuel via two fuel injectors having different fuel flow rates. The two fuel injectors may be operated to provide pilot, main, and post combustion fuel injections during a cycle of a cylinder.
Claims20
A diesel fuel injection method, comprising:
- during a cycle of a cylinder, injecting diesel fuel to the cylinder via a low fuel flow rate diesel fuel injector and injecting diesel fuel to the cylinder via a high fuel flow rate diesel fuel injector via a controller, the low fuel flow rate diesel fuel injector and the high fuel flow rate diesel fuel injector positioned in the cylinder.
A diesel fuel injection method, comprising:
- during a cycle of a cylinder, alternating pilot fuel injections between a first diesel fuel injector and a second diesel fuel injector via a controller, the first diesel fuel injector and the second diesel fuel injector positioned in the cylinder, the second diesel fuel injector opening to provide a second pilot fuel injection in the cycle after the first diesel fuel injector closes after providing a first pilot injection in the cycle, the second diesel fuel injector beginning to open for the second pilot fuel injection before an off dwell time of the first pilot fuel injector expires after the first pilot injection.
A diesel fuel injection method, comprising:
- during a cycle of a cylinder, via a controller, contemporaneously providing main fuel injections via a first diesel fuel injector and a second diesel fuel injector, the first diesel fuel injector and the second diesel fuel injector positioned in the cylinder, the first diesel fuel injector a low fuel flow diesel fuel injector and the second diesel fuel injector a high fuel flow diesel fuel injector.
Dependencies are inferred from the claim text.