Method and system for sensor rationality check
US-2018023497-A1 · Jan 25, 2018 · US
Hydrocarbon sensor diagnostic
US10378472B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10378472-B2 |
| Application number | US-201715435741-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 17, 2017 |
| Priority date | Feb 17, 2017 |
| Publication date | Aug 13, 2019 |
| Grant date | Aug 13, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A hydrocarbon sensor diagnosis system includes a computer programmed to collect data from a hydrocarbon sensor while an exhaust gas recirculation system is in an open state. The hydrocarbon sensor is mounted along an engine air intake between an exhaust port of the exhaust gas recirculation system and an intake port of a cylinder head. The computer is further programmed to determine whether a hydrocarbon sensor fault exists based at least on the collected data.
First claim
Opening claim text (preview).
What is claimed is: 1. A system, comprising a computer programmed to: before starting an engine mounted to an engine air intake, collect data from a hydrocarbon sensor mounted along the engine air intake between an exhaust port of an exhaust gas recirculation system and an intake port of a cylinder head while the exhaust gas recirculation system is in an open state and while actuating a fuel injector mounted on the engine air intake; and determine whether a hydrocarbon sensor fault exists based at least on the collected data. 2. The system of claim 1 , the computer further programmed to collect the data from the hydrocarbon sensor within a predetermined time of starting an engine mounted to the engine air intake. 3. The system of claim 1 , the computer further programmed to collect the data from the hydrocarbon sensor within twenty seconds of starting an engine mounted to the engine air intake. 4. The system of claim 1 , wherein the determination of whether the hydrocarbon sensor fault exists is based at least on an ambient air temperature. 5. The system of claim 1 , wherein the determination of whether the hydrocarbon sensor fault exists is based at least on a temperature of the cylinder head. 6. The system of claim 1 , the computer further programmed to actuate an exhaust gas recirculation valve to an open position upon starting an engine mounted to the engine air intake. 7. The system of claim 1 , the computer further programmed to store a fault code in response to determining that the hydrocarbon sensor fault exists. 8. The system of claim 1 , the computer further programmed to transmit a no fault code in response to determining that no hydrocarbon sensor fault exists. 9. The system of claim 1 , the computer further programmed to transmit a fault code in response to determining that the hydrocarbon sensor fault exists. 10. A method comprising: before starting an engine mounted to an engine air intake, collecting data from a hydrocarbon sensor mounted along the engine air intake between an exhaust port of an exhaust gas recirculation system and an intake port of a cylinder head while the exhaust gas recirculation system is in an open state and while actuating a fuel injector mounted on the engine air intake: and determining whether a hydrocarbon sensor fault exists based at least on the collected data. 11. The method of claim 10 , further comprising collecting the data from the hydrocarbon sensor within a predetermined time of starting an engine mounted to the engine air intake. 12. The method of claim 10 , comprising collecting the data from the hydrocarbon sensor within twenty seconds of starting an engine mounted to the engine air intake. 13. The method of claim 10 , wherein the determination is based at least on an ambient air temperature. 14. The method of claim 10 , wherein the determination is based at least on a temperature of the cylinder head. 15. The method of claim 10 , further comprising actuating an exhaust gas recirculation valve to an open position upon starting an engine mounted to the engine air intake. 16. The method of claim 10 , further comprising storing a fault code in response to determining that the hydrocarbon sensor fault exists. 17. The method of claim 10 , further comprising transmitting a no fault code in response to determining that no hydrocarbon sensor fault exists. 18. The method of claim 10 , further comprising transmitting a fault code in response to determining that the hydrocarbon sensor fault exists. 19. A system, comprising a computer programmed to: collect data from a hydrocarbon sensor mounted along an engine air intake between an exhaust port of an exhaust gas recirculation system and an intake port of a cylinder head while the exhaust gas recirculation system is in an open state; and determine whether a hydrocarbon sensor fault exists based at least on the collected data and based on at least one of an ambient air temperature and a temperature of the cylinder head.
Assignees
Inventors
Classifications
Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position (EGR valve position sensor F02M26/48) · CPC title
for starting (F02D41/061 takes precedence) · CPC title
Air temperature · CPC title
Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus · CPC title
EGR valve controlled by air measuring device · CPC title
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Frequently asked questions
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- What does patent US10378472B2 cover?
- A hydrocarbon sensor diagnosis system includes a computer programmed to collect data from a hydrocarbon sensor while an exhaust gas recirculation system is in an open state. The hydrocarbon sensor is mounted along an engine air intake between an exhaust port of the exhaust gas recirculation system and an intake port of a cylinder head. The computer is further programmed to determine whether a h…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F02D41/222. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 13 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).