Engine cooling system and method for engine cooling
First Claim
Patent Images
1. A method comprising:
- adjusting air flow provided by a first fan to an air-to-air intercooler to maintain a desired manifold air temperature and to maintain an expected fan speed of the first fan for a given ambient temperature and gross horsepower; and
if a measured fan speed of the first fan is different from the expected fan speed of the first fan by greater than a threshold amount, indicating cooling system degradation.
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Abstract
Various methods and systems are provided for adjusting the speed of a cooling system fan. In one example, a method includes adjusting a speed of a cooling system fan based on ambient temperature, engine output, and a desired engine temperature.
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Citations
18 Claims
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1. A method comprising:
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adjusting air flow provided by a first fan to an air-to-air intercooler to maintain a desired manifold air temperature and to maintain an expected fan speed of the first fan for a given ambient temperature and gross horsepower; and if a measured fan speed of the first fan is different from the expected fan speed of the first fan by greater than a threshold amount, indicating cooling system degradation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cooling system, comprising:
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an air-to-air intercooler for adjusting temperature of engine intake air; an air-to-coolant radiator for adjusting temperature of engine coolant; a first fan to provide air flow to the air-to-air intercooler; a second fan to provide air flow to the air-to-coolant radiator; and a controller having instructions for; adjusting air flow provided by the first fan to the air-to-air intercooler to maintain a desired manifold air temperature and to maintain an expected fan speed of the first fan for a given ambient temperature and gross horsepower; and if a measured fan speed of the first fan is different from the expected fan speed of the first fan by greater than a threshold amount, indicating cooling system degradation. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification