| 摘要 |
An internally ventilated brake disk includes friction rings arranged on both sides of the brake disk. Each friction ring has a friction surface and perforated segments and unperforated segments arranged between the perforated segments. Each friction surface engages with a base surface of a brake pad during braking. The brake disk further includes cooling channels extending between the friction surfaces and leading to cooling channel openings disposed on a peripheral edge of the brake disk, and through-holes arranged in the friction rings and extending from the friction surfaces to the cooling channels. The through-holes in a perforated segment are distributed in the friction surface of the perforated segment, and the friction surface of an unperforated segment extends at least over half the base surface of a contacting brake pad.
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