US4624476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle suspension apparatus
Assignee: Mitsubishi Motors Corp
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Filing: 1985-01-24
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Granted: 1986-11-25
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Expires: 2005-01-24
Abstract
Abstract Wheel suspension units each having fluid spring chambers are arranged in a vehicle suspension apparatus. A roll control quantity, determined in accordance with the relationship between a vehicle velocity and a steering angle, i.e., inlet solenoid valves and exhaust solenoid valves are controlled in accordance with solenoid ON/OFF time, thereby controlling rolling of the vehicle.
Inventors
- 👤 Tadao Tanaka
- 👤 Sunao Chikamori
- 👤 Mitsuhiko Harara
- 👤 Shinichi Takeuchi
- 👤 Masanaga Suzumura
- 👤 Minoru Tatemoto
- 👤 Naotake Kumagai
- 👤 Hiroki Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:33
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/016; B60G17/0152; B60G17/0155; B60G17/0162; B60G17/02; B60G17/04; B60G17/052; B60G17/0523; B60G2400/00; B60G2400/80; B60G2400/82; B60G2400/821; B60G2500/00; B60G2500/20; B60G2500/205; B60G2500/30; B60G2600/00; B60G2600/02; B60G2800/00; B60G2800/16; B60G2800/162
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
221 words
A suspension apparatus comprising: suspension units mounted on respective wheel, each unit having a fluid spring chamber; fluid supply means for supplying a fluid to each fluid spring chamber through a fluid supply valve; a plurality of communication paths each coupled between right and left fluid spring chambers and having a communicating control valve which is closed to achieve a roll control; fluid exhaust means for exhausting the fluid from each fluid spring chamber through a fluid exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said fluid supply valves and said fluid exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the fluid is supplied to said fluid spring chambers of the contracted suspension units with respect to a roll direction and the fluid is exhausted from said fluid spring chambers of the elongated suspension units when a vehicle changes a position thereof so as to control a change in the position of the vehicle.
Claim 2
Dependent Claim
221 words
A suspension apparatus comprising: suspension units mounted on respective wheel, each unit having a fluid spring chamber; fluid supply means for supplying a fluid to each fluid spring chamber through a fluid supply valve; a plurality of communication paths each coupled between right and left fluid spring chambers and having a communicating control valve which is closed to achieve a roll control; fluid exhaust means for exhausting the fluid from each fluid spring chamber through a fluid exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said fluid supply valves and said fluid exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the fluid is supplied to said fluid spring chambers of the contracted suspension units with respect to a roll direction and the fluid is exhausted from said fluid spring chambers of the elongated suspension units when a vehicle changes a position thereof so as to control a change in the position of the vehicle.
Claim 3
Dependent Claim
35 words
An apparatus according to claim 1, wherein said roll control means stops the roll control if lateral acceleration is not generated when a predetermined period of time has elapsed after the roll control is started.
Claim 4
Dependent Claim
52 words
An apparatus according to claim 1, wherein said roll control means stops the roll control when a velocity of the vehicle becomes lower than a predetermined velocity after the roll control is started, or when lateral acceleration is not generated within a predetermined period of time after the roll control is started.
Claim 5
Dependent Claim
219 words
A suspension apparatus comprising: suspension units mounted on respective wheels, each unit having a fluid spring chamber; fluid supply means for supplying a fluid to each fluid spring chamber through a fluid supply valve; a plurality of communication paths each coupled between right and left fluid spring chambers and having a communicating control valve which is closed to achieve a roll control; fluid exhaust means for exhausting the fluid from each fluid spring chamber through a fluid exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said fluid supply valves and said fluid exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the fluid is supplied to said fluid spring chambers of the contracted suspension units with respect to a roll direction and the fluid is exhausted from said fluid spring chambers of the elongated suspension units when a vehicle changes a position thereof thereby controlling a change in the position of the vehicle.
Claim 6
Dependent Claim
219 words
A suspension apparatus comprising: suspension units mounted on respective wheels, each unit having a fluid spring chamber; fluid supply means for supplying a fluid to each fluid spring chamber through a fluid supply valve; a plurality of communication paths each coupled between right and left fluid spring chambers and having a communicating control valve which is closed to achieve a roll control; fluid exhaust means for exhausting the fluid from each fluid spring chamber through a fluid exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said fluid supply valves and said fluid exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the fluid is supplied to said fluid spring chambers of the contracted suspension units with respect to a roll direction and the fluid is exhausted from said fluid spring chambers of the elongated suspension units when a vehicle changes a position thereof thereby controlling a change in the position of the vehicle.
Claim 7
Dependent Claim
28 words
An apparatus according to claim 4, wherein said communicating control valves are opened when said velocity detecting means detects that the velocity is lower than a predetermined velocity.
Claim 8
Dependent Claim
40 words
An apparatus according to claim 4, wherein said apparatus further comprises acceleration detecting means for detecting a lateral acceleration, said communicating control valves being opened when said acceleration detecting means detects a lateral acceleration lower than a predetermined lateral acceleration.
Claim 9
Dependent Claim
223 words
A hydropneumatic type suspension apparatus comprising: suspension units mounted on respective wheels, each unit having a fluid spring chamber; fluid supply means for supplying a fluid to each fluid spring chamber through a fluid supply valve; a plurality of communication paths each coupled between right and left fluid spring chambers and having a communicating control valve which is closed to achieve a roll control; fluid exhaust means for exhausting the fluid from each fluid spring chamber through a fluid exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said fluid supply valves and said fluid exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the fluid is supplied to said fluid spring chambers of the contracted suspension units with respect to a roll direction and the fluid is exhausted from said fluid spring chambers of the elongated suspension units when a vehicle changes a position thereof so as to control a change in the position of the vehicle.
Claim 10
Dependent Claim
223 words
A hydropneumatic type suspension apparatus comprising: suspension units mounted on respective wheels, each unit having a fluid spring chamber; fluid supply means for supplying a fluid to each fluid spring chamber through a fluid supply valve; a plurality of communication paths each coupled between right and left fluid spring chambers and having a communicating control valve which is closed to achieve a roll control; fluid exhaust means for exhausting the fluid from each fluid spring chamber through a fluid exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said fluid supply valves and said fluid exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the fluid is supplied to said fluid spring chambers of the contracted suspension units with respect to a roll direction and the fluid is exhausted from said fluid spring chambers of the elongated suspension units when a vehicle changes a position thereof so as to control a change in the position of the vehicle.
Claim 11
Dependent Claim
218 words
A suspension apparatus comprising: suspension units mounted on respective wheel, each unit having an air spring chamber; air supply means for supplying air to each air spring chamber through an air supply valve; a plurality of communication paths each coupled between right and left air spring chambers and having a communicating control valve which is closed to achieve a roll control; air exhaust means for exhausting the air from each air spring chamber through an air exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said air supply valves and said air exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the air is supplied to said air spring chambers of the contracted suspension units with respect to a roll direction and the air is exhausted from said air spring chamber of the elongated suspension units when a vehicle changes a position thereof thereby controlling a change in the position of the vehicle.
Claim 12
Dependent Claim
218 words
A suspension apparatus comprising: suspension units mounted on respective wheel, each unit having an air spring chamber; air supply means for supplying air to each air spring chamber through an air supply valve; a plurality of communication paths each coupled between right and left air spring chambers and having a communicating control valve which is closed to achieve a roll control; air exhaust means for exhausting the air from each air spring chamber through an air exhaust valve; steering angle detecting means for detecting a steering wheel angle; velocity detecting means for detecting a vehicle velocity; control quantity determining means for determining a roll control quantity in accordance with the steering angle detected by said steering angle detecting means and the velocity detected by said velocity detecting means; and roll control means for controlling rolling of a vehicle body by opening/closing said air supply valves and said air exhaust valves in accordance with the roll control quantity determined by said control quantity determining means, so that the air is supplied to said air spring chambers of the contracted suspension units with respect to a roll direction and the air is exhausted from said air spring chamber of the elongated suspension units when a vehicle changes a position thereof thereby controlling a change in the position of the vehicle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |