Steering arrangement for vehicles, especially motor vehicles, with a steering servo mechanism

Claim 2

A steering arrangement for vehicles having a steering wheel, comprising a steering gear having an input and output shaft, said input shaft being operatively connected to said steering wheel, a coupling member having a first input operatively connected to said output shaft for receiving first steering signals therefrom, said steering gear having a translation ratio for steering instructions received from said steering wheel defining a steering momentum at said steering wheel, and a steering servo mechanism having input and output, means coupled between the output shaft of said steering gear and the input of said servo mechanism and having a further translation ratio at least a component of which is independent from the velocity of the vehicle and at least partly compensating for the steering translation ratio of the steering gear, said coupling member having a second input, the output of said steering servo mechanism delivering Second steering signals to said second input of said coupling member, said coupling member being an adding member for delivering output signals corresponding to the sum of said first and second steering signals, the output of said coupling member being operatively connected to the chassis of the vehicle.

Claim 3

The steering arrangement as claimed in claim 1, wherein said means receives a control input signal v depending from the velocity of the vehicle and produces a translation ratio of a + f (1/v) wherein a is the further or additional translation ratio component and f (1/v) is a function of the vehicle speed.

Claim 4

The steering arrangement as claimed in claim 2, wherein a means receiving a manually adjustable further translation ratio is provided.

Claim 5

The steering arrangement as claimed in claim 3, wherein said means having said control input and said means having the manually adjustable translation ratio are arranged parallel with respect to each other and each having an output means, said output means being coupled into an adding member connected to input of said steering servo mechanism.

Claim 6

The steering arrangement as claimed in claim 4, wherein said adding member comprises a further input for the receiving of a control magnitude, a regulator means, said further input being connected to said regulator means.

Claim 7

The steering arrangement as claimed in claim 1, wherein the steering translation ratio of the steering gear is variable.

Claim 8

In a motor vehicle having a steering wheel, a steering arrangement comprising a steering gear having an input and output shaft, said input shaft being operatively connected to said steering wheel, a coupling member having a first input operatively connected to said output shaft for receiving first steering signals therefrom, said steering gear having a translation ratio for steering instructions received from said steering wheel, defining a steering momentum at said steering wheel, and a steering servo mechanism having input and output, means coupled between the output shaft of said steering gear and the input of said servo mechanism and having a further translation ratio at least a component of which is independent from the velocity of the vehicle and at least partially compensating for the steering translation ratio of the steering gear, said coupling member having a second input, the output of said steering servo mechanism delivering second steering signals to said second input of said coupling member, said coupling member being an adding member for delivering output signals corresponding to the sum of said first and second steering signals, the output of said coupling member being operatively connected to the chassis of the vehicle.

Claim 9

In a motor vehicle having a steering wheel, a steering arrangement comprising a steering gear having an input and output shaft, said input shaft being operatively connected to said steering wheel, a coupling member having a first input operatively connected to said output shaft for receiving first steering signals therefrom, said steering gear having a translation ratio for steering instructions received from said steering wheel, defining a steering momentum at said steering wheel, and a steering servo mechanism having input and output, means coupled between the output shaft of said steering gear and the input of said servo mechanism and having a further translation ratio at least a component of which is independent from the velocity of the vehicle and at least partially compensating for the steering translation ratio of the steering gear, said coupling member having a second input, the output of said steering servo mechanism delivering second steering signals to said second input of said coupling member, said coupling member being an adding member for delivering output signals corresponding to the sum of said first and second steering signals, the output of said coupling member being operatively connected to the chassis of the vehicle.

Claim 10

The combination as claimed in claim 7, wherein said means receives a control input signal v depending from the velocity of the vehicle and produces a translation ratio of a + f (1/v) wherein a is the further or additional translation ratio component and f(1/v) is a function of the vehicle speed.

Claim 11

The combination as claimed in claim 8, including further a means receiving a manually adjustable further translation ratio.

Claim 12

The combination as claimed in claim 9, wherein said means having said control input and said means having the manually adjustable translation ratio are arranged parallel with respect to each other and each having an output means, said output means being coupled into an adding member connected to the input of said steering servo mechanism.

Claim 13

The combination as claimed in claim 10, wherein said adding member comprises a further input for the receiving of a control magnitude, a regulator means, said further input being connected to said regulator means.

Claim 14

The combination as claimed in claim 7, wherein the steering translation ratio of the steering gear is variable.