Patent EP0136690A2 successfully refreshed from Google Patents.
EP0136690A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vehicle brake system
Assignee: Nissan Motor Co Ltd
•
Filing: 1984-10-01
•
Granted: —
•
Expires: 2004-10-01
Abstract
Abstract A sensor measures the magnitude of a force applied to a brake operating member, such as a brake pedal. A desired magnitude of a braking force applied to a vehicle is determined in accordance with a changeable relationship between the desired braking force and the force applied to the brake operating member. The actual magnitude of the braking force is adjusted to the desired braking force magnitude. In place of the desired braking force, a desired rate of deceleration of the vehicle may be determined in accordance with a changeable relationship between the desired deceleration rate and the magnitude of the force applied to the brake operating member. In this case, the actual rate of deceleration of the vehicle is adjusted to the desired deceleration rate.
Inventors
- 👤 Hitoshi Kubota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 04:49
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/02; B60T7/04; B60T7/042; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/246; B60T13/66; B60T13/72; B60T7/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
109 words
A brake system for a vehicle, comprising: (a) a brake operating member; (b) means for sensing the magnitude of a force applied to the brake operating member; (c) means for determining a desired magnitude of a braking force applied to the vehicle, the desired braking force magnitude depending on the magnitude of the force applied to the brake operating member in accordance with a changeable relationship therebetween; (d) means for changing the relationship between the desired braking force magnitude and the magnitude of the force applied to the brake operating member; and (e) means for adjusting the actual magnitude of the braking force toward the desired braking force magnitude.
Claim 2
Dependent Claim
109 words
A brake system for a vehicle, comprising: (a) a brake operating member; (b) means for sensing the magnitude of a force applied to the brake operating member; (c) means for determining a desired magnitude of a braking force applied to the vehicle, the desired braking force magnitude depending on the magnitude of the force applied to the brake operating member in accordance with a changeable relationship therebetween; (d) means for changing the relationship between the desired braking force magnitude and the magnitude of the force applied to the brake operating member; and (e) means for adjusting the actual magnitude of the braking force toward the desired braking force magnitude.
Claim 3
Dependent Claim
51 words
The system of claim 1, wherein the adjusting means comprises: (a) means for sensing the actual magnitude of the braking force; (b) means for comparing the desired and actual braking force magnitudes; and (c) means for controlling the actual braking force magnitude on the basis of the results of the comparison.
Claim 4
Dependent Claim
77 words
The system of claim 1, wherein the adjusting means comprises: (a) a power booster for enhancing the braking force to an adjustable extent; (b) means for sensing the actual magnitude of the braking force; (c) means for comparing the desired and actual braking force magnitudes; and (d) means for increasing and decreasing the extent of enhancement of the braking force when the actual braking force magnitude.is less than and greater than the desired braking force magnitude respectively.
Claim 5
Dependent Claim
64 words
The system of claim 3, wherein the power booster comprises: (a) a reference pressure chamber exposed to a reference pressure; (b) a adjustable pressure chamber exposed to an adjustable pressure; and (c) a power piston subjected to the pressure differential between the reference and adjustable pressure chambers, the extent of enhancement of the braking force depending on the pressure differential across the power piston.
Claim 6
Dependent Claim
34 words
The system of claim 1, wherein the relationship between the desired braking force magnitude and the magnitude of the force applied to the brake operating member is changeable between first and second preset relationships.
Claim 7
Dependent Claim
101 words
A brake system for a vehicle, comprising: (a) a brake operating member; (b) means for sensing the magnitude of a force applied to the brake operating member; (c) means for determining a desired rate of deceleration of the vehicle which depends on the magnitude of the force applied to the brake operating member in accordance with a changeable relationship therebetween; (d) means for changing the relationship between the desired deceleration rate and the magnitude of the force applied to the brake operating member; and (e) means for adjusting the actual rate of deceleration of the vehicle to the desired deceleration rate.
Claim 8
Dependent Claim
101 words
A brake system for a vehicle, comprising: (a) a brake operating member; (b) means for sensing the magnitude of a force applied to the brake operating member; (c) means for determining a desired rate of deceleration of the vehicle which depends on the magnitude of the force applied to the brake operating member in accordance with a changeable relationship therebetween; (d) means for changing the relationship between the desired deceleration rate and the magnitude of the force applied to the brake operating member; and (e) means for adjusting the actual rate of deceleration of the vehicle to the desired deceleration rate.
Claim 9
Dependent Claim
50 words
The system of claim 6, wherein the adjusting means comprises: (a) means for sensing the actual rate of deceleration of the vehicle; (b) means for comparing the desired and actual deceleration rates; and (c) means for controlling the actual deceleration rate on the basis of the results of the comparison.
Claim 10
Dependent Claim
76 words
The system of claim 6, wherein the adjusting means comprises: (a) a power booster for enhancing the braking force to an adjustable extent; (b) means for sensing the actual rate of deceleration of the vehicle; (c) means for comparing the desired and actual deceleration rates; and (d) means for increasing and decreasing the extent of enhancement of the braking force when the actual deceleration rate is less than and greater than the desired deceleration rate respectively.
Claim 11
Dependent Claim
64 words
The system of claim 8, wherein the power booster includes: (a) a reference pressure chamber exposed to a reference pressure; (b) a adjustable pressure chamber exposed to an adjustable pressure; and (c) a power piston subjected to the pressure differential between the reference and adjustable pressure chambers, the extent of enhancement of the braking force depending on the pressure differential across the power piston.
Claim 12
Dependent Claim
33 words
The system of claim 6, wherein the relationship between the desired deceleration rate and the magnitude of the force applied to the brake operating member is changeable between first and second preset relationships.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.