Stop maintaining system of vehicle

• US 10,322,706 B2
• Filed: 12/07/2016
• Issued: 06/18/2019
• Est. Priority Date: 12/28/2015
• Status: Active Grant

• Current Assignee: Mazda Motor Corporation
• Original Assignee: Mazda Motor Corporation
• Inventors: Uehara, Shigeyuki, Takase, Masaru
• Primary Examiner(s): King, Bradley T
• Assistant Examiner(s): Hsiao, James K
• Application Number:
  US15/372,099
• Publication Number:
  US 20170182991A1
• Time in Patent Office: 923 Days
• Field of Search: 701 36
• CPC Class Codes: B60T 13/588 both fluid and mechanical assistance or drive
• CPC Class Codes: B60T 13/662 characterised by specified functions of the control system components
• CPC Class Codes: B60T 13/741 acting on an ultimate actuator
• CPC Class Codes: B60T 2201/06 Hill holder; Start aid systems on inclined road
• CPC Class Codes: B60T 7/042 by electrical means, e.g. using travel or force sensors
• CPC Class Codes: B60T 7/085 by electrical means, e.g. travel, force sensors
• CPC Class Codes: B60T 7/122 for locking of reverse movement
• CPC Class Codes: B60T 8/245 Longitudinal vehicle inclination
• CPC Class Codes: B60T 8/48 connecting the brake actuator to an alternative or additional source of fluid pressure , e.g. traction control systems

Abstract

A vehicle stop maintaining system is provided, which includes a foot brake mechanism, a brake force control mechanism having a pressurizer and for braking the vehicle wheels by controlling the pressurizer independently from depression of a brake pedal, a controller for maintaining a vehicle stopped state by operating the brake force control mechanism when the stopped state is detected, and operating an automatic stop control, an automatic stop mode switch for selecting ON/OFF states of the automatic stop control upon receiving an input from a vehicle driver, and a control mechanism for controlling a given mechanism that is different from the brake force control mechanism, and operating the brake force control mechanism in response to a given operation by the driver. When the given operation is performed on the control mechanism by the driver, the controller switches the selected one of the ON/OFF states to the other state.

Claims

1. A vehicle stop maintaining system comprising:

a foot brake mechanism for braking vehicle wheels through hydraulic brake mechanisms;

a brake force control mechanism having a pressurizer that increases hydraulic brake pressure to be applied to the hydraulic brake mechanisms, and for braking the vehicle wheels by controlling the pressurizer independently from depression of a brake pedal;

a first controller comprising a processor configured to maintain a stopped state of the vehicle by operating the brake force control mechanism when the stopped state is detected, and operating an automatic stop control in which hydraulic brake pressure is released when a hydraulic brake pressure release condition is satisfied;

an automatic stop mode switch for selecting one of ON and OFF states of the automatic stop control upon receiving an input from a vehicle driver, the ON state corresponding to execution of the automatic stop control, the OFF state corresponding to prohibition of the automatic stop control;

a control mechanism for controlling a given mechanism that is different from the brake force control mechanism, and operating the brake force control mechanism in response to a given operation by the driver; and

a second controller comprising a memory for storing the selected one of the ON and OFF states,

wherein when the given operation is performed on the control mechanism by the driver, the first controller switches the selected one of the ON and OFF states to the other state, and

wherein when switching an ignition state on after switching off once, the second controller automatically applies the one of the ON and OFF states selected before the ignition state is switched off.

2. The system of claim 1, wherein the control mechanism is a control device for operating a plurality of control items of vehicle instruments and the brake force control mechanism, and includes:

a touch panel display unit that has a display screen for displaying a plurality of virtual control switches corresponding to the control items, respectively, and a cursor for indicating the virtual control switches, and receives a direct operation from the driver on the virtual control switches displayed on the display screen;

an input device disposed to be separated from the display screen and for moving the cursor; and

a display controller comprising a processor for controlling display contents on the display screen.

3. The system of claim 2, further comprising an electric parking brake mechanism for braking the vehicle wheels by operating electric brake mechanisms that are driven by electric actuators, respectively, independently from depression of a brake pedal,

wherein the control mechanism includes an electric parking brake switch for controlling the operation of the electric parking brake mechanism.

4. The system of claim 3, wherein when the electric parking brake switch is operated a plurality of times within a given period of time, the controller switches the selected one of the ON and OFF states to the other state.

5. The system of claim 4, wherein the electric parking brake switch is located near the automatic stop mode switch.

6. The system of claim 3, wherein the electric parking brake switch is located near the automatic stop mode switch.

7. The system of claim 1, further comprising an electric parking brake mechanism for braking the vehicle wheels by operating electric brake mechanisms that are driven by electric actuators, respectively, independently from depression of a brake pedal,

wherein the control mechanism includes an electric parking brake switch for controlling the operation of the electric parking brake mechanism.

8. The system of claim 7, wherein the electric parking brake switch is located near the automatic stop mode switch.

9. A vehicle stop maintaining system comprising:

a foot brake mechanism for braking vehicle wheels through hydraulic brake mechanisms;

a brake force control mechanism having a pressurizer that increases hydraulic brake pressure to be applied to the hydraulic brake mechanisms, and for braking the vehicle wheels by controlling the pressurizer independently from depression of a brake pedal;

a first controller comprising a processor configured to maintain a stopped state of the vehicle by operating the brake force control mechanism when the stopped state is detected, and operating an automatic stop control in which hydraulic brake pressure is released when a hydraulic brake pressure release condition is satisfied;

an automatic stop mode switch for selecting one of ON and OFF states of the automatic stop control upon receiving an input from a vehicle driver, the ON state corresponding to execution of the automatic stop control, the OFF state corresponding to prohibition of the automatic stop control;

an ignition switch for detecting an ignition state of the vehicle; and

a control mechanism for controlling a given mechanism that is different from the brake force control mechanism, and operating the brake force control mechanism in response to a given operation by the driver,

wherein the control mechanism is a control device for operating a plurality of control items of vehicle instruments and the brake force control mechanism, and includes;

a touch panel display unit that has a display screen for displaying a plurality of virtual control switches corresponding to the control items, respectively, and a cursor for indicating the virtual control switches, and receives a direct operation from the driver on the virtual control switches displayed on the display screen;

an input device disposed to be separated from the display screen and for moving the cursor; and

a display controller comprising a processor for controlling display contents on the display screen,

wherein when the given operation is performed on the control mechanism by the driver, the controller switches the selected one of the ON and OFF states to the other state,

wherein the display controller has a memory for storing the selected one of the ON and OFF states, and

wherein when switching the ignition state on after switching off once, the display controller automatically applies the one of the ON and OFF states selected before the ignition state is switched off.

10. The system of claim 9, further comprising an electric parking brake mechanism for braking the vehicle wheels by operating electric brake mechanisms that are driven by electric actuators, respectively, independently from depression of a brake pedal,

wherein the control mechanism includes an electric parking brake switch for controlling the operation of the electric parking brake mechanism.

11. The system of claim 10, wherein when the electric parking brake switch is operated a plurality of times within a given period of time, the controller switches the selected one of the ON and OFF states to the other state.

12. The system of claim 11, wherein the electric parking brake switch is located near the automatic stop mode switch.

13. The system of claim 10, wherein the electric parking brake switch is located near the automatic stop mode switch.

14. A vehicle stop maintaining system comprising:

a foot brake mechanism for braking vehicle wheels through hydraulic brake mechanisms;

a brake force control mechanism having a pressurizer that increases hydraulic brake pressure to be applied to the hydraulic brake mechanisms, and for braking the vehicle wheels by controlling the pressurizer independently from depression of a brake pedal;

a controller comprising a processor configured to maintain a stopped state of the vehicle by operating the brake force control mechanism when the stopped state is detected, and operating an automatic stop control in which hydraulic brake pressure is released when a hydraulic brake pressure release condition is satisfied;

an automatic stop mode switch for selecting one of ON and OFF states of the automatic stop control upon receiving an input from a vehicle driver, the ON state corresponding to execution of the automatic stop control, the OFF state corresponding to prohibition of the automatic stop control;

a control mechanism for controlling a given mechanism that is different from the brake force control mechanism, and operating the brake force control mechanism in response to a given operation by the driver; and

an electric parking brake mechanism for braking the vehicle wheels by operating electric brake mechanisms that are driven by electric actuators, respectively, independently from depression of a brake pedal,

wherein when the given operation is performed on the control mechanism by the driver, the controller switches the selected one of the ON and OFF states to the other state,

wherein the control mechanism includes an electric parking brake switch for controlling the operation of the electric parking brake mechanism, and

wherein when the electric parking brake switch is operated a plurality of times within a given period of time, the controller switches the selected one of the ON and OFF states to the other state.

15. The system of claim 14, wherein the electric parking brake switch is located near the automatic stop mode switch.