| 摘要 |
A method, computer program product and system for controlling a cooling system for an internal combustion engine having first and second cooling fans (3A, 3B) is provided. The method comprises the steps of operating the first cooling fan (3A) at a first rotational frequency (FR1) which is greater than a combustion frequency (FC) of the internal combustion engine and operating the second cooling fan (3B) at a second rotational frequency (FR2) which is less than the combustive vibration frequency (FC) of the internal combustion engine. Since the rotational frequencies (FR1, FR2) of the first and second cooling fans (3A, 3B) are different from the combustion frequency (FC) of the internal combustion engine, the resonance between the rotational vibration of the cooling fans (3A, 3B) and the combustive vibration of the internal combustion engine may be prevented. Also, since the rotational frequencies (FR1, FR2) of the first and second cooling fans (3A, 3B) are different from each other so that the resonance between their rotational vibrations may be prevented. |
