# US 10,864,951 B2 · Air-directing device for a motor-vehicle body, and motor-vehicle body > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,951 B2 - Document ID: US10864951B2 - Status: Granted - Kind: B2 - Application number: 16/244,231 - Filed: 2019-01-10 - Published: 2019-07-11 - Granted: 2020-12-15 - Earliest claimed: 2018-01-11 - Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Applicants: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Inventors: Thomas Wolf - Web page: https://patentgrep.com/patent/US10864951B2 ## CPC - B62D 35/007: {Rear spoilers (B62D35/001 takes precedence)} - B62D 37/02: by aerodynamic means - Y02T 10/82: Elements for improving aerodynamics - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An air-directing device for a motor-vehicle body includes an air-directing element having a longitudinal axis and being accommodated in a guide element of the air-directing device. The air directing device additionally includes a flow channel formed in between the guide element and the air-directing element, wherein flow can take place through the flow channel starting from an entry opening, which faces toward a front of the motor-vehicle body, and extending through an exit opening, which faces away from the entry opening. The air-directing device is designed so that the air flowing through the flow channel is guided thereby such that it can flow out of the exit opening transversely to an outer contour of the air-directing element. ## Claims ### Claim 1 An air-directing device for a motor-vehicle body, wherein the air-directing device is configured to be provided in a rear-end region of the motor-vehicle body, the air-directing device comprising: an air-directing element having a longitudinal axis and being accommodated in a guide element of the air-directing device, a flow channel being formed in between the guide element and the air-directing element, wherein flow can take place through the flow channel starting from an entry opening, which faces toward a front of the motor-vehicle body, and extending through an exit opening, which faces away from the entry opening, wherein the air-directing device is configured so that the air flowing through the flow channel is guided thereby such that it can flow out of the exit opening transversely to an outer contour of the air-directing element, and wherein the air directing element, at a rear side surface thereof, ends in front of or projects below a first separation edge of the guide element at the exit opening. ### Claim 2 (depends on 1) The air-directing device as claimed in claim 1, wherein an upper surface of the air-directing element is positioned at least in alignment with a virtual extension of a roofline, and/or beneath the virtual extension of the roofline, of the motor-vehicle body. ### Claim 3 (depends on 1) The air-directing device as claimed in claim 1, wherein the first separation edge of the guide element has, along its virtual extension, a projecting portion in relation to a second separation edge of the air-directing element. ### Claim 4 (depends on 1) The air-directing device as claimed in claim 1, wherein, starting from the entry opening, the flow channel tapers at least to some extent in the direction of the exit opening. ### Claim 5 (depends on 4) The air-directing device as claimed in claim 4, wherein, starting from the entry opening, the flow channel tapers continuously in the direction of the exit opening at least as far as a deflecting edge. ### Claim 6 (depends on 1) The air-directing device as claimed in claim 1, wherein the air-directing element is designed in the form of a shaped element. ### Claim 7 (depends on 1) The air-directing device as claimed in claim 1, wherein the air-directing element is designed symmetrically in relation to its longitudinal axis. ### Claim 8 (depends on 1) The air-directing device as claimed in claim 1, wherein the air-directing device has at least one channel chamber, wherein flow can take place through the channel chamber in the direction of a longitudinal axis of the air-directing element. ### Claim 9 (depends on 1) The air-directing device as claimed in claim 1, wherein the air-directing element is connected to the guide element with the aid of at least one support. ### Claim 10 (depends on 1) The air-directing device as claimed in claim 1, wherein the air-directing element is connected to the guide element along its outer edges extending in the direction of its longitudinal axis. ### Claim 11 (depends on 1) The air-directing device as claimed in claim 1, wherein the air-directing device is configured so that the air flowing through the flow channel is guided thereby such that it can flow out of the exit opening perpendicularly to an outer contour of the air-directing element. ### Claim 12 A motor-vehicle body, comprising: an air-directing device configured to influence a downforce and a drag coefficient, wherein the air-directing device is configured to be provided in a rear-end region of the motor-vehicle body, the air-directing device comprising: an air-directing element having a longitudinal axis and being accommodated in a guide element of the air-directing device, a flow channel being formed between the guide element and the air-directing element, wherein flow can take place through the flow channel starting from an entry opening, which faces toward a front of the motor-vehicle body, and extending through an exit opening, which faces away from the entry opening, wherein the air-directing device is configured so that the air flowing through the flow channel is guided thereby such that it can flow out of the exit opening transversely to an outer contour of the air-directing element, and wherein the air directing element, at a rear side surface thereof, ends in front of or projects below a first separation edge of the guide element at the exit opening. ### Claim 13 (depends on 1) The air-directing device as claimed in claim 1, wherein at least a portion of the exit opening is open in a direction perpendicular to the outer contour of the air-directing element. ### Claim 14 (depends on 1) The air-directing device as claimed in claim 1, wherein an upper surface of the air-directing element is essentially planar between an entry edge of the air-directing element and a second separating edge of the air directing element, wherein a lower surface of the air-directing element faces away from the upper surface, and is essentially planer between an entry edge and a deflecting edge, wherein the deflecting edge is rounded and connects the lower surface to the rear side surface, and wherein the entry edge is rounded and connects the lower surface to the upper surface. ### Claim 15 (depends on 14) The air-directing device as claimed in claim 14, wherein the rear side surface faces away from the entry edge and faces toward a channel-outflow portion of the flow channel. ### Claim 16 (depends on 14) The air-directing device as claimed in claim 14, wherein a flow bed of the flow channel comprises an outer contour of the guide element, wherein the flow bed comprises a ramp edge at the roofline, the flow bed extending down from the roofline at the ramp edge, and wherein the flow bed comprises a rear bend, the flow bed extending upward from the rear bend toward the first separation edge. ### Claim 17 (depends on 16) The air-directing device as claimed in claim 16, wherein a distance between the entry edge and the ramp edge is at least double a distance between the air directing element and the guide element at a channel-outflow portion of the flow channel. ### Claim 18 (depends on 14) The air-directing device as claimed in claim 14, wherein the entry edge with at least a first contour, a second contour, and third contour, at least one of the first contour, the second contour, or the third contour having a shape different from at least one other of the first contour, the second contour, or the third contour.