Hydraulic suspension system and vehicle having same

Patent metadata

Field	Value
Publication number	US-12370859-B2
Application number	US-202418608279-A
Country	US
Kind code	B2
Filing date	Mar 18, 2024
Priority date	Dec 30, 2021
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A hydraulic suspension system includes: a central control apparatus and height adjustment apparatuses respectively corresponding to wheels of a vehicle. The central control apparatus includes a housing and a moving member movably disposed in the housing and dividing the housing into a first region and a second region in a moving direction of the moving member. The first region includes a first chamber and a second chamber isolated from each other. The second region includes a third chamber and a fourth chamber isolated from each other. The first, second, third, and fourth chambers respectively communicated with the height adjustment apparatuses. The height adjustment apparatuses communicated with the first chamber and the second chamber correspond to wheels located on a first diagonal of the vehicle. The height adjustment apparatuses communicated with the third chamber and the fourth chamber correspond to wheels located on a second diagonal of the vehicle.

First claim

What is claimed is:

1. A hydraulic suspension system, comprising:
a plurality of height adjustment apparatuses respectively corresponding to a plurality of wheels of a vehicle; and
a central control apparatus, comprising a housing and a moving member, the moving member movably disposed in the housing and dividing the housing into a first region and a second region in a moving direction of the moving member, the first region comprising a first chamber and a second chamber that are isolated from each other, and the second region comprising a third chamber and a fourth chamber that are isolated from each other; and
the first chamber, the second chamber, the third chamber, and the fourth chamber respectively communicated with the height adjustment apparatuses, the height adjustment apparatuses communicated with the first chamber and the second chamber corresponding to wheels located on a first diagonal of the vehicle, and the height adjustment apparatuses communicated with the third chamber and the fourth chamber corresponding to wheels located on a second diagonal of the vehicle; and
wherein the moving member comprises a first part, a second part, and a third part, the first part moves axially along a side wall of the housing to divide the housing into the first region and the second region, the second part is connected to a first side of the first part and moves along the side wall of the housing to divide the first region into the first chamber and the second chamber, and the third part is connected to a second side of the first part and moves along the side wall of the housing to divide the second region into the third chamber and the fourth chamber; and
wherein an extension direction of the first part is perpendicular to an extension direction of the second part and an extension direction of the third part.

2. The hydraulic suspension system according to claim 1 , wherein a volume change of the first chamber and the second chamber in the first region is opposite to a volume change of the third chamber and the fourth chamber in the second region.

3. The hydraulic suspension system according to claim 1 , wherein the first chamber, the second chamber, the third chamber, and the fourth chamber are disposed in the moving direction of the moving member.

4. The hydraulic suspension system according to claim 1 , wherein in an initial state, a volume of the first chamber is the same as a volume of the fourth chamber, and a volume of the second chamber is the same as a volume of the third chamber.

5. The hydraulic suspension system according to claim 1 , wherein the height adjustment apparatuses comprises at least a front-axle height adjustment apparatus and a rear-axle height adjustment apparatus, one of the front-axle height adjustment apparatus and the rear-axle height adjustment apparatus is communicated with the first chamber and the third chamber, and the other one of the front-axle height adjustment apparatus and the rear-axle height adjustment apparatus is communicated with the second chamber and the fourth chamber.

6. The hydraulic suspension system according to claim 1 , wherein the height adjustment apparatuses comprise at least a front-axle height adjustment apparatus and a rear-axle height adjustment apparatus, one of the front-axle height adjustment apparatus and the rear-axle height adjustment apparatus is communicated with the first chamber and the fourth chamber, and the other one of the front-axle height adjustment apparatus and the rear-axle height adjustment apparatus is communicated with the second chamber and the third chamber.

7. The hydraulic suspension system according to claim 1 , further comprising a liquid storage apparatus, wherein
the central control apparatus comprises a plurality of first connection ports, each of the height adjustment apparatuses comprises a shock absorber, the shock absorber is disposed in correspondence to one of the wheels and communicated with one of the first connection ports, the liquid storage apparatus is configured to deliver oil to the shock absorbers; and
the first connection ports comprise a first port, a second port, a third port, and a fourth port, and the first port, the second port, the third port, and the fourth port are respectively communicated with the first chamber, the second chamber, the third chamber, and the fourth chamber.

8. The hydraulic suspension system according to claim 7 , wherein the shock absorber has a shock absorber housing, a piston, and a piston rod, the shock absorber housing is configured to be connected to one of the wheels, the piston is located in the shock absorber housing and is coupled with the shock absorber housing to define an upper chamber and a lower chamber, one end of the piston rod is connected to the piston, the piston rod is configured to be connected to a vehicle body, an oil channel is disposed in the piston rod, the oil channel is communicated with the lower chamber, and the liquid storage apparatus is configured to deliver the oil to the shock absorber through the oil channel.

9. The hydraulic suspension system according to claim 7 , wherein each of the height adjustment apparatuses further comprises a connection channel and an accumulator module,
the connection channel is connected between the central control apparatus and the shock absorber; and
the accumulator module comprises a damping adjustment accumulator and an opening adjustment valve, the damping adjustment accumulator is connected between the shock absorber and the central control apparatus, and the opening adjustment valve is disposed between the damping adjustment accumulator and the shock absorber.

10. The hydraulic suspension system according to claim 1 , wherein
the housing has a first cylindrical body, a second cylindrical body, and a third cylindrical body that are disposed in the moving direction of the moving member,
an internal diameter of the second cylindrical body is greater than an internal diameter of the first cylindrical body and is greater than an internal diameter of the third cylindrical body, and
the first chamber is formed between the second part and an inner wall of the first cylindrical body, the first part is in contact with an inner wall of the second cylindrical body to divide the second cylindrical body into the second chamber and the third chamber, and the fourth chamber is formed between the third part and an inner wall of the third cylindrical body.

11. The hydraulic suspension system according to claim 1 , wherein the first chamber and the second chamber are located on a first side of the first part, and the third chamber and the fourth chamber are located on a second side of the first part.

12. The hydraulic suspension system according to claim 1 , further comprising a restoring spring disposed between the moving member and an end wall of the housing.

13. A vehicle, comprising the hydraulic suspension system according to claim 1 .

14. A hydraulic suspension system comprising:
a central control apparatus comprising a housing, a moving member, a plurality of first connection ports, and a plurality of second connection ports;
a plurality of height adjustment apparatuses corresponding respectively to a plurality of wheels of a vehicle, wherein each of the height adjustment apparatuses comprises a shock absorber, and the shock absorber is disposed in correspondence to one of the wheels and communicated with one of the first connection ports; and
a liquid storage apparatus configured to deliver oil to the shock absorber of each of the height adjustment apparatuses;
wherein the moving member is movably disposed in the housing and divides the housi

Assignees

• Byd Co Ltd

Inventors

• Huang Fei
• Xu Haolun
• Yang Zhiye
• Wang Feng

Classifications

• B60G2500/30

  Height or ground clearance · CPC title

• B60G2500/112

  Fluid actuation · CPC title

• B60G2202/24

  Fluid damper · CPC title

• B60G2202/12

  Wound spring · CPC title

• B60G13/08

  hydraulic · CPC title