Brake hydraulic pressure control unit, brake system for motorcycle, and motorcycle

A brake hydraulic pressure control unit of a brake system for a motorcycle,

• the brake system including:
• a first hydraulic circuit acting on a front wheel of the motorcycle;
• and
• a second hydraulic circuit acting on a rear wheel of the motorcycle,
• each of the first hydraulic circuit and the second hydraulic circuit including:
• a primary channel communicating between a master cylinder and a wheel cylinder;
• and
• a secondary channel releasing a brake fluid in the wheel cylinder to an intermediate section of the primary channel by driving a pump, and
• one hydraulic circuit of the first hydraulic circuit and the second hydraulic circuit being a boost-type hydraulic circuit capable of boosting a pressure of the brake fluid in the wheel cylinder by driving the pump, and including a supply channel through which the brake fluid in the master cylinder is supplied to a suction side of the pump in the secondary channel,
• the brake hydraulic pressure control unit comprising:
• an inlet valve provided in the primary channel;
• an outlet valve provided in the secondary channel;
• a first valve provided on the master cylinder side of the intermediate section of the primary channel in the one hydraulic circuit;
• and
• a second valve provided in the supply channel in the one hydraulic circuit, wherein
• the inlet valve, the outlet valve, and the pump in the one hydraulic circuit and the first valve and the second valve in the one hydraulic circuit are separately provided in a primary base body and a secondary base body, and
• the primary base body and the secondary base body are separated from each other.