Engine cooling fan to reduce charge air cooler corrosion
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-025/10
F02M-015/00
F01P-007/02
F01P-007/10
F01P-007/04
F01P-007/08
F02M-035/10
F02B-029/04
F02D-023/00
F02D-041/00
출원번호
US-0656471
(2012-10-19)
등록번호
US-9476345
(2016-10-25)
발명자
/ 주소
Styles, Daniel Joseph
Surnilla, Gopichandra
출원인 / 주소
Ford Global Technologies, LLC
대리인 / 주소
Voutyras, Julia
인용정보
피인용 횟수 :
2인용 특허 :
13
초록▼
Methods and systems are provided for reducing corrosion of a charge air cooler and preventing engine misfire due to condensate formation. In response to condensate forming in a charge air cooler, engine cooling fan operation is adjusted. Engine cooling fan operation may also be controlled in respons
Methods and systems are provided for reducing corrosion of a charge air cooler and preventing engine misfire due to condensate formation. In response to condensate forming in a charge air cooler, engine cooling fan operation is adjusted. Engine cooling fan operation may also be controlled in response to vehicle operating conditions.
대표청구항▼
1. A method for controlling an engine cooling fan, comprising: adjusting engine cooling fan operation in response to condensate formation within a charge air cooler, where adjusting engine cooling fan operation includes: determining an amount of condensate formation within the charge air cooler base
1. A method for controlling an engine cooling fan, comprising: adjusting engine cooling fan operation in response to condensate formation within a charge air cooler, where adjusting engine cooling fan operation includes: determining an amount of condensate formation within the charge air cooler based on one or more of charge air cooler inlet and outlet charge air pressure, charge air cooler inlet and outlet charge air temperature, ambient conditions, and vehicle speed, and adjusting engine cooling fan operation based on the determined amount of condensate formation, where the determining is performed by a controller; anddetermining a condensate location within the charge air cooler based on one or more of charge air cooler inlet and outlet charge air pressure, charge air cooler inlet and outlet charge air temperature, ambient conditions, vehicle speed, fan speed, and grille shutter position, and adjusting engine cooling fan operation based on the determined condensate location. 2. A method for controlling an engine cooling fan, comprising: adjusting engine cooling fan operation in response to condensate formation within a charge air cooler, where adjusting engine cooling fan operation includes: determining an amount of condensate formation within the charge air cooler based on one or more of charge air cooler inlet and outlet charge air pressure, charge air cooler inlet and outlet charge air temperature, ambient conditions, and vehicle speed, and adjusting engine cooling fan operation based on the determined amount of condensate formation, where the determining is performed by a controller; andchanging a fan rotation direction of the engine cooling fan to change an effectiveness of the charge air cooler and move a condensate location within the charge air cooler. 3. A method for controlling an engine cooling fan, comprising: determining a condensate location within a charge air cooler (CAC) along a horizontal axis of the CAC; andadjusting both engine cooling fan operation and a grille shutter position in response to the determined condensate location within the CAC remaining within a positional range for greater than a threshold duration. 4. The method of claim 3 wherein the engine cooling fan is adjusted to move the condensate location within the CAC toward an inlet of the CAC during a first set of conditions, and to move the condensate location within the CAC toward an outlet of the CAC during a second, different, set of conditions. 5. The method of claim 4 wherein the first set of conditions includes when the condensate location is closer to the outlet than the inlet. 6. The method of claim 4 wherein the first set of conditions includes when the condensate location is closer to the inlet than the outlet. 7. The method of claim 4 wherein the first set of conditions includes when engine temperature is higher than a threshold and the second set of conditions includes when the engine temperature is lower than the threshold, and wherein the engine temperature is an engine coolant temperature. 8. The method of claim 4 wherein moving the condensate location toward the inlet includes increasing fan speed, and moving toward the outlet includes reducing fan speed. 9. The method of claim 4 wherein the first set of conditions includes when a driver tip-out occurs, and the second set of conditions includes engine-driven vehicle acceleration. 10. The method of claim 3 further comprising adjusting the engine cooling fan in response to engine cooling parameters and a driver pedal tip-out. 11. The method of claim 9 wherein the positional range is increased in response to increased engine temperature. 12. The method of claim 9 further comprising boosting intake air upstream of the CAC. 13. The method of claim 3 further comprising directly injecting fuel into an engine of a vehicle and wherein the determining the condensate location within the CAC is performed by a controller including computer readable instructions for adjusting engine cooling fan operation based on the determined condensate location. 14. A method for controlling a vehicle engine cooling fan, comprising: increasing engine cooling fan speed in response to a condensate-forming location within a charge air cooler (CAC), and engine temperature above a threshold or vehicle deceleration conditions;decreasing engine cooling fan speed in response to the condensate-forming location within the CAC, and engine temperature below the threshold;determining a position of the condensate-forming location within the CAC and adjusting engine cooling fan speed based on the determined position; andadjusting a grille shutter in response to the determined position of the condensate-forming location in the CAC. 15. A method for controlling a vehicle engine cooling fan, comprising: adjusting engine cooling fan operation in response to a condensate location within a charge air cooler remaining stagnant for greater than a threshold duration, including increasing engine cooling fan speed in response to a first condition, and decreasing engine cooling fan speed in response to a second condition different from the first condition; anddetermining the condensate location within the charge air cooler has remained stagnant for greater than a threshold duration with an engine controller based on one or more of inlet and outlet charge air pressure and temperatures of the charge air cooler, ambient conditions, and vehicle speed, wherein adjusting engine cooling fan operation includes adjusting engine cooling fan operation based on the determination that the condensate location within the charge air cooler has remained stagnant for greater than the threshold duration, and wherein engine cooling fan operation is adjusted to move the condensate location within the charge air cooler toward an inlet of the charge air cooler during the first condition, and to move the condensate location toward an outlet of the charge air cooler during the second condition, the first condition including when the condensate location in the charge air cooler is closer to the outlet of the charge air cooler than the inlet of the charge air cooler and the second condition including when the condensate location in the charge air cooler is closer to the inlet of the charge air cooler than the outlet of the charge air cooler. 16. The method of claim 15 further comprising adjusting engine cooling fan operation in response to engine cooling parameters and a driver pedal tip-out and tip-in, wherein a positional range is increased in response to increased engine temperature. 17. A method for controlling a vehicle engine cooling fan, comprising: adjusting engine cooling fan operation in response to a condensate location within a charge air cooler remaining stagnant for greater than a threshold duration, including increasing engine cooling fan speed in response to a first condition, and decreasing engine cooling fan speed in response to a second condition different from the first condition, where the condensate location within the charge air cooler is a dew point location along a horizontal axis of the charge air cooler, and where the dew point location is determined by an engine controller based on one or more of a charge air cooler inlet and outlet charge air pressure, charge air cooler inlet and outlet temperature, ambient conditions, vehicle speed, fan speed, and grille shutter position. 18. A method for controlling a vehicle engine cooling fan, comprising: adjusting engine cooling fan operation in response to a condensate location within a charge air cooler remaining stagnant along a horizontal axis of the charge air cooler for greater than a threshold duration, including increasing engine cooling fan speed in response to a first condition, and decreasing engine cooling fan speed in response to a second condition different from the first condition. 19. A method for controlling a vehicle engine cooling fan, comprising: adjusting engine cooling fan operation in response to a condensate location within a charge air cooler remaining stagnant for greater than a threshold duration, including increasing engine cooling fan speed in response to a first condition, and decreasing engine cooling fan speed in response to a second condition different from the first condition, where the first condition includes the condensate location being located closer to an outlet than an inlet of the charge air cooler and the second condition includes the condensate location being located closer to the inlet than the outlet.
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이 특허에 인용된 특허 (13)
Tai, Chun; Reppert, Todd Colin, Charge air cooler arrangement with cooler bypass and method.
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