| 摘要 |
An oil pressure control apparatus includes: a pump that ejects oil by being driven by rotation of an engine; a first flow passage interconnecting the pump and a first predetermined portion; a second flow passage branching from the first flow passage and supplying oil to a second predetermined portion; and a flow passage area adjusting portion that adjusts a flow passage area of the second flow passage according to oil pressure in the second flow passage. The flow passage area adjusting portion includes a spool formed such that a first pressure receiving face and a second pressure receiving face having an area smaller than that of the first pressure receiving face oppose each other with the second flow passage interposed therebetween, with the spool moving according to oil pressure in the second flow passage, and a biasing member biasing the spool in a direction toward the second pressure receiving face. |
