Actively adjustable wheel suspension for the wheels of an axle of a motor vehicle

Patent metadata

Field	Value
Publication number	US-10166833-B2
Application number	US-201415102813-A
Country	US
Kind code	B2
Filing date	Dec 4, 2014
Priority date	Dec 9, 2013
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

An actively adjustable wheel suspension for the wheels of an axle of a motor vehicle, wherein each wheel is articulated on the body side of the motor vehicle via a plurality of wheel control elements, includes for each wheel on the axle a rotary actuator which is supported on the body side and includes a torsion bar. The two rotary actuators can be activated for active adjustment via a control unit, with the rotary actuators and the torsion bars of the rotary actuators being oriented in motor vehicle longitudinal direction. The rotary actuators include each at least one strut, which is oriented in motor vehicle transverse direction, for torque support.

First claim

What is claimed is:

1. An actively adjustable wheel suspension for a wheel of an axle of a motor vehicle, comprising
a first rotary actuator operatively connected to the wheel and supported on a body of the motor vehicle, said first rotary actuator including a torsion bar and at least one strut which is provided for torque support, with the first rotary actuator and the torsion bar being oriented in a vehicle longitudinal direction, and with the at least one strut being oriented in a vehicle transverse direction; and
a control unit configured to activate the first rotary actuator for active adjustment,
wherein the at least one strut of the first rotary actuator is designed in the shape of a housing, with the control unit being integrated in the at least one strut.

2. The actively adjustable wheel suspension of claim 1 , further comprising a subframe including two longitudinal members oriented in the vehicle longitudinal direction, a rear cross member oriented in the vehicle transverse direction, and a front cross member oriented in the vehicle transverse direction, said front cross member having an open cross section to form a stabilizer lane oriented in the vehicle transverse direction, with the control unit being arranged in the stabilizer lane.

3. The actively adjustable wheel suspension of claim 1 , further comprising a second rotary actuator operatively connected to another wheel of the axle of the motor vehicle, and a subframe including two longitudinal members oriented in the vehicle longitudinal direction, a rear cross member oriented in the vehicle transverse direction, and a front cross member oriented in the vehicle transverse direction, said front cross member having an open cross section to form a stabilizer lane oriented in the vehicle transverse direction, said at least one housing-shaped strut, said control unit integrated in the at least one strut, and at least one strut of the second rotary actuator being arranged in the stabilizer lane.

4. An actively adjustable wheel suspension for a wheel of an axle of a motor vehicle, comprising
a first rotary actuator operatively connected to the wheel and supported on a body of the motor vehicle, said first rotary actuator including a torsion bar and at least one strut which is provided for torque support, with the first rotary actuator and the torsion bar being oriented in a vehicle longitudinal direction, and with the at least one strut being oriented in a vehicle transverse direction;
a second rotary actuator operatively connected to another wheel of the axle of the motor vehicle, and a subframe including two longitudinal members oriented in the vehicle longitudinal direction, a rear cross member oriented in the vehicle transverse direction, and a front cross member oriented in the vehicle transverse direction, said front cross member having an open cross section to form a stabilizer lane oriented in the vehicle transverse direction, wherein at least one strut of the second rotary actuator is arranged in the stabilizer lane, and
a control unit configured to activate at least one of the first rotary actuator and the second rotary actuator for active adjustment,
said control unit affixed on the subframe.

5. An actively adjustable wheel suspension for a wheel of an axle of a motor vehicle, comprising
a first rotary actuator operatively connected to the wheel and supported on a body of the motor vehicle, said first rotary actuator including a torsion bar and at feast one strut which is provided for torque support, with the first rotary actuator and the torsion bar being oriented in a vehicle longitudinal direction, and with the at least one strut being oriented in a vehicle transverse direction;
a second rotary actuator operatively connected to another wheel of the axle of the motor vehicle, said at least one strut of the first rotary actuator and at least one strut of the second rotary actuator being configured as a single-part housing structure in which the control unit is integrated; and
a control unit configured to activate at least one of the first rotary actuator and the second rotary actuator for active adjustment.

6. The actively adjustable wheel suspension of claim 5 , wherein the single-part housing structure, the first rotary actuator and the second rotary actuator form a single-part structural unit.

7. The actively adjustable wheel suspension of claim 5 , further comprising a subframe including two longitudinal members oriented in the vehicle longitudinal direction, a rear cross member oriented in the vehicle transverse direction, and a front cross member oriented in the vehicle transverse direction, said front cross member having an open cross section to form a stabilizer lane oriented in the vehicle transverse direction, said housing structure with the integrated control unit being arranged in the stabilizer lane.

8. The actively adjustable wheel suspension of claim 5 , further comprising a subframe including two longitudinal members oriented in the vehicle longitudinal direction, and a rear cross member oriented in the vehicle transverse direction, said housing structure with the integrated control unit being secured to the two longitudinal members, with the housing structure being dimensioned such that the subframe can be formed in an absence of another cross member.

9. The actively adjustable wheel suspension of claim 5 , wherein the single-part housing structure, the first rotary actuator, and the second rotary actuator are of multipart configuration, further comprising fasteners configured to secure the first rotary actuator and the second rotary actuator to the single-part housing structure.

10. The actively adjustable wheel suspension of claim 9 , wherein the fasteners lie in a plane of symmetry of the first and second rotary actuators or extend in perpendicular relation to the first rotary actuator and the second rotary actuator.

Assignees

• Audi Ag

Inventors

• Groen Matthias
• Schmitt Joachim
• Leibl Peter

Classifications

• B60G17/025 Primary

  the mechanical spring being a torsion spring (B60G17/0277, B60G21/0553 take precedence) · CPC title

• B60G2202/32

  The spring being in series with the damper and/or actuator · CPC title

• B60G2204/11

  Mounting of sensors thereon · CPC title

• B60G2206/60

  Subframe construction · CPC title

• B60G11/181

  arranged in a plane parallel to the longitudinal axis of the vehicle · CPC title