SYSTEM AND METHOD FOR CONTROLLING FAN ACTIVATION BASED ON INTAKE MANIFOLD AIR TEMPERATURE AND TIME IN AN EGR SYSTEM
First Claim
1. A method for controlling at least one engine cooling fan for a compression ignition internal combustion engine, the method comprising:
- turning on the at least one cooling fan when an intake manifold air temperature is equal to or greater than a predetermined turn-on threshold temperature for a predetermined turn-on time; and
turning off the at least one cooling fan when the intake manifold air temperature is equal to or less than a predetermined turn-off threshold temperature for a predetermined turn-off time, wherein the predetermined turn-on threshold temperature is greater than the predetermined turn-off threshold temperature.
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Accused Products
Abstract
A method for controlling at least one engine cooling fan for a compression ignition internal combustion, the method includes turning on the at least one cooling fan when an intake manifold air temperature is equal to or greater than a predetermined turn-on threshold temperature for a predetermined turn-on time, and turning off the at least one cooling fan when the intake manifold air temperature is equal to or less than a predetermined turn-off threshold temperature for a predetermined turn-off time, wherein the predetermined turn-on threshold temperature is greater than the predetermined turn-off threshold temperature.
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Citations
20 Claims
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1. A method for controlling at least one engine cooling fan for a compression ignition internal combustion engine, the method comprising:
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turning on the at least one cooling fan when an intake manifold air temperature is equal to or greater than a predetermined turn-on threshold temperature for a predetermined turn-on time; and
turning off the at least one cooling fan when the intake manifold air temperature is equal to or less than a predetermined turn-off threshold temperature for a predetermined turn-off time, wherein the predetermined turn-on threshold temperature is greater than the predetermined turn-off threshold temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling at least one cooling fan for a compression ignition internal combustion engine, the system comprising:
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at least one sensor for providing an indication of at least one engine component parameter; and
an engine controller in communication with the at least one engine component parameter sensor, the engine controller configured to, turn on the at least one cooling fan when an intake manifold air temperature is equal to or greater than a predetermined turn-on threshold temperature for a predetermined turn-on time; and
turn off the at least one cooling fan when the intake manifold air temperature is equal to or less than a predetermined turn-off threshold temperature for a predetermined turn-off time, wherein the predetermined turn-on threshold temperature is greater than the predetermined turn-off threshold temperature. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification