| 摘要 |
PURPOSE:To prevent noises and improve the durability by connecting a pressure accumulator to a high pressure oil line for supplying pressure oil to the accumulator by an electrically-operated oil pressure switch reacting to the oil pressure in the high pressure oil line when the pressure is lowered under a fixed value to shorten the operating time of the oil pressure pump. CONSTITUTION:For ensuring the oil pressure of anti-lock brake control in a high pressure oil line 45 and a pressure accumulator 46 in each operating process of an anti-lock brake, the oil pressure is monitored by a pressure switch S. When the oil pressure is lowered under the lowest limit set value, the pressure switch S is operated to electrify an electromagnetic acutuator 55, and a relay switch 56 is closed to drive a motor M. Then, the oil pressure is sent to the pressure accumulator 46 by a pump P via the high pressure oil line 45, and increased up to a set pressure. When it reaches to the set value, the pressure switch S is intercepted to stop the supply of the pressure oil. This construction permits to shorten the operating time of the oil pressure pump for preventing noises and improving the durability. |
