| 摘要 |
PURPOSE:To assure excellent lubrication performance even in cooling by partitining an internal part of an oil pan into an oil wicking part and a droplet oil collecting part with use of a partition wall, enabling oil collected in the collecting part to flow into the wicking part, and opening and closing a control valve in response to oil temperature. CONSTITUTION:Started an engine, oil after being employed to lubricate engine respective parts is dropped and once collected in an oil collecting part 22. Thereupon, a control valve 24 arranged on a bottom plate 20B constituting a partititon wall has, in engine cooling like a case where the engine is started at low temperature, a valve body thereof adapted to be present at a position of closing the valve owing to ocntraction of wax involved in the valve, so that the oil being dropped forms a upper accumulation layer 10A on the oil 10 previously stored. And, since the oil of the upper acumulation layer 10A flows down from a communication part 21 and sucked up from a straightener, oil at relatively high temperature is circulated through engine respective parts. In succession, the control valve 24 starts to be opened with the advance of engine warming, and the oil 10 collected in the oil collecting part 21 is forced to flow into the side of the wicking part 21 via the control valve 24. |
