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发明公开
CN103538582A 一种开关式机械真空泵控制方法及装置 有权

一种开关式机械真空泵控制方法及装置
摘要：
一种开关式机械真空泵控制方法及装置，包括：ECU时刻监测真空储藏罐的真空度信号以及制动踏板的行程信号的大小；（1）只收取到真空储藏罐的真空度信号时，ECU比较真空储藏罐内真空度值与第一设定值、第二设定值的大小：（a）真空度值低于第一设定值时，ECU向单向离合器控制单元发出啮合信号，驱动机构带动真空泵工作；（b）真空度达到第二设定值时，ECU向单向离合器控制单元发出中断信号，驱动机构与真空泵脱离；（2）当收到制动踏板的行程信号时，ECU向单向离合器发出啮合信号，直至车辆停止；使用该控制方法和装置既可以保留机械真空泵的优点，又可以拥有电子真空泵的优势。
摘要（英）：

Disclosed is a switch type mechanical vacuum pump control method and device. The method includes: an ECU (electronic control unit) constantly monitors strength of a vacuum degree signal of a vacuum storage tank and a stroke signal of a brake pedal; (1) when the vacuum degree signal of the vacuum storage tank is received, the ECU compares the vacuum degree in the vacuum storage tank with a first set value and a second set value: (a) if the vacuum degree is lower than the first set value, the ECU transmits a meshing signal to a one-way clutch control unit, and a drive mechanism drives a vacuum pump to operate; (b) if the vacuum degree reaches the second set value, the ECU transmits an interrupt signal to the one-way clutch control unit, and the drive mechanism is disconnected with the vacuum pump; (2) when the stroke signal of the brake pedal is received, the ECU transmits a meshing signal to a one-way clutch until a vehicle stops. By the control method and device, advantages of mechanical vacuum pumps can be kept, and advantages of electronic vacuum pumps can be possessed.

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