Dual Compressor Turbocharger
US-2017241425-A1 · Aug 24, 2017 · US
Systems and methods for determining fuel release from a fuel injector
US10436142B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10436142-B2 |
| Application number | US-201916419919-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 22, 2019 |
| Priority date | Jan 17, 2018 |
| Publication date | Oct 8, 2019 |
| Grant date | Oct 8, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
Methods and systems for evaluating whether or not a fuel amount that is greater than a threshold has been release to an engine via fuel injectors when the fuel injectors are commanded off are presented. In one example, an oxygen sensor is activated and engine cranking is prevented until a pumping current of the oxygen sensor is proportionate to a concentration of oxygen sensed via the oxygen sensor so that released fuel may be observed during engine starting.
First claim
Opening claim text (preview).
The invention claimed is: 1. An engine operating method, comprising: identifying a fuel injector of an engine that releases fuel while the fuel injector is commanded off via a controller and a fuel-air ratio indicated from an oxygen sensor during engine cranking and run-up; and adjusting an actuator via the controller based on the fuel injector. 2. The method of claim 1 , where the actuator is a cylinder poppet valve operator. 3. The method of claim 1 , where the actuator is the fuel injector. 4. The method of claim 1 , where the engine is not rotating when the fuel injector releases fuel to the engine. 5. The method of claim 1 , further comprising: identifying a first cylinder to fire during the engine cranking and run-up and selectively deactivating engine cylinders in response to an indication of more than a threshold amount of fuel being released from the fuel injector. 6. The method of claim 5 , further comprising: selectively deactivating cylinders of the engine to identify the fuel injector during subsequent engine starts after the engine cranking and run-up. 7. The method of claim 1 , further comprising: activating a heater of the oxygen sensor and heating the oxygen sensor to a temperature where pumping current of the oxygen sensor is proportionate with an oxygen concentration sensed via the oxygen sensor before applying the fuel-air ratio indicated by the oxygen sensor to identify the fuel injector. 8. The method of claim 7 , further comprising: delaying engine starting until the oxygen sensor is heated to the temperature where pumping current of the oxygen sensor is proportionate with the oxygen concentration sensed via the oxygen sensor.
Assignees
Inventors
Classifications
Engine temperature · CPC title
Leakage detection · CPC title
relating to the failure of actuators or electrically driven elements · CPC title
Control of sensor heater · CPC title
the characteristics being an oxygen content or concentration or the air-fuel ratio · CPC title
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- What does patent US10436142B2 cover?
- Methods and systems for evaluating whether or not a fuel amount that is greater than a threshold has been release to an engine via fuel injectors when the fuel injectors are commanded off are presented. In one example, an oxygen sensor is activated and engine cranking is prevented until a pumping current of the oxygen sensor is proportionate to a concentration of oxygen sensed via the oxygen se…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02D41/0087. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 08 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).