Motor vehicle with ventilated wheel case

Patent metadata

Field	Value
Publication number	US-9669807-B2
Application number	US-201514967427-A
Country	US
Kind code	B2
Filing date	Dec 14, 2015
Priority date	Dec 18, 2014
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A motor vehicle with a wheel, a wheel case enveloping the wheel, and an air duct leading to the wheel case, wherein the air duct incorporates an adjustable element, which in a first position steers the air entering into the wheel case through the air duct into a gap between an inner flank of the wheel and an inner wall of the wheel case, and in a second position diverts the air by an outer flank of the wheel.

First claim

What is claimed is:

1. A motor vehicle, comprising:
a wheel,
a wheel case enveloping the wheel, and
an air duct having a forward portion extending from an inlet opening to a junction, a first duct portion extending from the forward portion at the junction to the wheel case, and a second duct portion extending from the forward portion at the junction to the wheel case,
an adjustable element positioned within the air duct, the adjustable element having a leading edge extending into the forward portion and a trailing edge secured to the junction such that the adjustable element is pivotable about the trailing edge between a first position in which the air from the forward portion is directed through the first duct portion into a gap between an inner flank of the wheel and an inner wall of the wheel case, and a second position in which the air from the forward portion is directed through the second duct portion onto an outer flank of the wheel.

2. The motor vehicle according to claim 1 , with a brake that is secured in a recess to the inner flank of the wheel.

3. The motor vehicle according to claim 1 , in which the air duct exhibits a closed cross section.

4. The motor vehicle according to claim 1 , in which the inlet opening of the air duct lies in the front of the vehicle.

5. The motor vehicle according to claim 1 , wherein the first duct portion is a brake air duct, through which the air flows into the gap, and the second portion is a side air duct, through which the air flows by the outer flank of the wheel.

6. The motor vehicle according to claim 5 , in which the air flow exiting the brake air duct is directed against the inner flank of the wheel.

7. The motor vehicle according to one of claim 5 , in which an outlet opening of the brake air duct in the wheel case for the most part lies on the side of a plane facing the middle of the vehicle, which is perpendicular to the wheel axle and touches the inner flank of the wheel.

8. The motor vehicle according to one of claim 5 , in which an outlet opening of the side air duct lies in proximity to the outer flank of the wheel.

9. The motor vehicle according to one of claim 5 , in which the expansion of an outlet opening of the side air duct is greater in the vehicle height than in the transverse direction of the vehicle.

10. The motor vehicle according to one of claim 5 , in which the adjustable element is positioned between the brake air duct and side air duct.

11. The motor vehicle according to claim 1 , with an actuator, which brings the adjustable element into the first position given a delay of the vehicle.

12. The motor vehicle according to claim 11 , with a control circuit for activating the actuator.

13. The motor vehicle according to claim 12 , in which the control circuit is set up to determine the duration for which the adjustable element remains in the first position after a braking process has concluded as a function of the intensity of the braking process.

14. The motor vehicle according to claim 1 , further comprising an actuator configured to selectively position the adjustable element into the first and second positions, wherein the adjustable element has a weight such that inertia of the actuator in a traveling direction during a braking process forces the adjustable element into the first position.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Wolf Marc
• Yigit Saim

Classifications

• B62D35/005

  Front spoilers (B62D35/001 takes precedence) · CPC title

• B60T5/00 Primary

  Vehicle modifications to facilitate cooling of brakes · CPC title

• F16D65/847

  with open cooling system, e.g. cooled by air · CPC title