Braking system having mechanism for controlling resistance of fluid flow from pump into low-pressure brake cylinder depending upon pressure difference between low-pressure and high-pressure brake cylinders

摘要

A braking system including a pump for delivering a pressurized fluid toward two brake cylinders, an electrically operated pressure control device connected to a reservoir, pump and two brake cylinders, a controller for electrically controlling the pressure control device to control the pressures in the two brake cylinders, and a flow resistance control mechanism provided in a pump passage connecting the pump and the two brake cylinders. The mechanism operates to control fluid flows during operation of the pump such that when the pressures in the two brake cylinders have a relatively large difference, a resistance of fluid flow from the pump toward a low-pressure cylinder of the two brake cylinders is increased.