US 12,330,610 B2
Apparatus for guiding air toward a wheel brake of a motor vehicle
Stephan Machate, Hainfeld (DE); and Marius Imiolczyk, Tamm (DE)
Assigned to Dr. Ing. h.c. F. Porsche Aktiengesellschaft, (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Sep. 13, 2022, as Appl. No. 17/943,384.
Prior Publication US 2023/0130954 A1, Apr. 27, 2023
Int. Cl. B60T 5/00 (2006.01); B60T 17/04 (2006.01)
CPC B60T 5/00 (2013.01) [B60T 17/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An apparatus for guiding air toward a wheel brake of a motor vehicle, said apparatus comprising:
an air guide element, which is configured to be displaced between a retracted rest position, in which the air guide element is retracted in relation to an undercarriage of the motor vehicle, and an extended operating position, in which the air guide element is extended, at least in sections, in relation to the undercarriage of the motor vehicle, and
a hydraulic adjustment mechanism for displacing the air guide element, at least in sections, between the rest position and the operating position, wherein the hydraulic adjustment mechanism comprises a hydraulic cylinder and a return element,
wherein in a presence of brake actuation, the hydraulic cylinder can be filled with brake fluid in order to displace the air guide element from the rest position to the operating position,
wherein in an absence of brake actuation, the return element displaces the air guide element from the operating position to the rest position while discharging brake fluid from the hydraulic cylinder,
wherein in the presence of brake actuation, the hydraulic cylinder can be filled with brake fluid via a brake fluid hose which branches off, upstream of a brake caliper of the wheel brake or in a region of the brake caliper, from a brake fluid line which leads from a brake pressure distributor to the brake caliper of the wheel brake.