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US 10,590,874 B2Granted
Systems and methods for conducting onboard engine cleaning routines in a vehicle
AssigneeFord Global Technologies, LLC
InventorAed M. Dudar
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for mitigating issues related to sluggish engine performance. In one example, a method comprises, responsive to an indication of degradation of one or more cylinders in the engine, reducing carbon buildup associated with the one or more cylinders via injecting a diesel exhaust fluid into an intake manifold of the engine while the engine is combusting air and fuel. In this way, a water content of the diesel exhaust fluid may be vaporized in the one or more engine cylinders, which may effectively reduce the carbon buildup.
Claims6
A method comprising:
- in a first operating condition of a vehicle, including an indication of degradation of one or more cylinders of an engine and a lack of degradation indicated in an exhaust gas recirculation system, injecting a diesel exhaust fluid into an intake manifold of the engine with an exhaust gas recirculation valve closed to mitigate the degradation of the one or more cylinders;
- and
- in a second operating condition of the vehicle, including an indication of degradation in the exhaust gas recirculation system, and either a lack of degradation in the one or more cylinders and/or the indication of degradation in the one or more cylinders of the engine, injecting the diesel exhaust fluid into the intake manifold of the engine with the exhaust gas recirculation valve open to mitigate the degradation of the exhaust gas recirculation system.
Dependencies are inferred from the claim text.