| 摘要 |
An apparatus and method for filtering a liquid utilize a filter apparatus (10) including a bypass filter (14), a full flow filter (16), and a flow balancing element (18) for dividing a total inlet flow of fluid to the filter apparatus into a bypass portion, passing through the bypass filter (14), and a full flow portion, passing through the full flow filter (16). The bypass filter has a lower filtering efficiency than the full flow filter element, so that a venturi tube is not required for causing the bypass portion to pass through the bypass filter. The flow balancing element (18) divides the flow into a desired bypass portion and a desired full flow portion, at a predetermined operating temperature. Below the operating temperature, the bypass portion increases and the full flow portion decreases, the bypass portion becoming greater that the full flow portion at a second predetermined temperature below the operating temperature. <IMAGE> |
