Method for reducing engine oil dilution
US-9394843-B2 · Jul 19, 2016 · US
Systems and methods for removing fuel from engine oil
US9611780B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9611780-B2 |
| Application number | US-201514804761-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 21, 2015 |
| Priority date | Jul 21, 2015 |
| Publication date | Apr 4, 2017 |
| Grant date | Apr 4, 2017 |
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Abstract
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A coolant control system of a vehicle includes a fraction module, and a coolant valve control module. The fraction module determines an oil fuel fraction based on an amount of fuel in an amount of engine oil. The coolant valve control module, based on the oil fuel fraction, selectively actuates a coolant valve to enable coolant flow from an integrated exhaust manifold (IEM) of an engine to an engine oil heat exchanger.
First claim
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What is claimed is: 1. A coolant control system of a vehicle, comprising: a fraction module that determines an oil fuel fraction based on an amount of fuel in an amount of engine oil; and a coolant valve control module that, based on the oil fuel fraction, selectively actuates a coolant valve to enable coolant flow from an integrated exhaust manifold (IEM) of an engine to an engine oil heat exchanger. 2. The system of claim 1 , wherein the coolant valve control module actuates the coolant valve to enable coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is greater than a predetermined value. 3. The system of claim 2 , wherein the coolant valve control module actuates the coolant valve to prevent coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is less than the predetermined value. 4. The system of claim 1 , wherein the coolant valve control module selectively actuates the coolant valve to control coolant flow from the IEM to the engine oil heat exchanger further based on at least one of a transmission temperature and an engine oil temperature. 5. The system of claim 4 , wherein the coolant valve control module actuates the coolant valve to enable coolant flow from the IEM to the engine oil heat exchanger when: (i) the transmission temperature is less than a predetermined temperature; and (ii) the oil fuel fraction is greater than a predetermined value. 6. The system of claim 5 , wherein the coolant valve control module selectively actuates the coolant valve to prevent coolant flow of from the IEM to the engine oil heat exchanger when the transmission temperature is greater than the predetermined temperature. 7. The system of claim 5 , wherein the coolant valve control module actuates the coolant valve to prevent coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is greater than the predetermined value. 8. The system of claim 4 , wherein the coolant valve control module actuates the coolant valve to enable coolant flow from the IEM to the engine oil heat exchanger when: (i) the engine oil temperature is less than a predetermined temperature; and (ii) the oil fuel fraction is greater than a predetermined value. 9. The system of claim 8 , wherein the coolant valve control module selectively actuates the coolant valve to prevent coolant flow of from the IEM to the engine oil heat exchanger when the engine oil temperature is greater than the predetermined temperature. 10. The system of claim 9 , wherein the coolant valve control module actuates the coolant valve to prevent coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is greater than the predetermined value. 11. A coolant control method for a vehicle, comprising: determining an oil fuel fraction based on an amount of fuel in an amount of engine oil; and based on the oil fuel fraction, selectively actuating a coolant valve to enable coolant flow from an integrated exhaust manifold (IEM) of an engine to an engine oil heat exchanger. 12. The method of claim 11 wherein selectively actuating the coolant valve includes actuating the coolant valve to enable coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is greater than a predetermined value. 13. The method of claim 12 wherein selectively actuating the coolant valve includes actuating the coolant valve to prevent coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is less than the predetermined value. 14. The method of claim 11 further comprising selectively actuating the coolant valve to control coolant flow from the IEM to the engine oil heat exchanger further based on at least one of a transmission temperature and an engine oil temperature. 15. The method of claim 14 wherein selectively actuating the coolant valve includes actuating the coolant valve to enable coolant flow from the IEM to the engine oil heat exchanger when: (i) the transmission temperature is less than a predetermined temperature; and (ii) the oil fuel fraction is greater than a predetermined value. 16. The method of claim 15 wherein selectively actuating the coolant valve includes actuating the coolant valve to prevent coolant flow of from the IEM to the engine oil heat exchanger when the transmission temperature is greater than the predetermined temperature. 17. The method of claim 15 wherein selectively actuating the coolant valve includes actuating the coolant valve to prevent coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is greater than the predetermined value. 18. The method of claim 14 wherein selectively actuating the coolant valve includes actuating the coolant valve to enable coolant flow from the IEM to the engine oil heat exchanger when: (i) the engine oil temperature is less than a predetermined temperature; and (ii) the oil fuel fraction is greater than a predetermined value. 19. The method of claim 18 wherein selectively actuating the coolant valve includes actuating the coolant valve to prevent coolant flow of from the IEM to the engine oil heat exchanger when the engine oil temperature is greater than the predetermined temperature. 20. The method of claim 19 wherein selectively actuating the coolant valve includes actuating the coolant valve to prevent coolant flow from the IEM to the engine oil heat exchanger when the oil fuel fraction is greater than the predetermined value.
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- What does patent US9611780B2 cover?
- A coolant control system of a vehicle includes a fraction module, and a coolant valve control module. The fraction module determines an oil fuel fraction based on an amount of fuel in an amount of engine oil. The coolant valve control module, based on the oil fuel fraction, selectively actuates a coolant valve to enable coolant flow from an integrated exhaust manifold (IEM) of an engine to an e…
- Who is the assignee on this patent?
- Gm Global Tech Operations Llc
- What technology area does this patent fall under?
- Primary CPC classification F01P7/14. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 04 2017 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).