Controlled vehicle deceleration based on a selected vehicle driving mode

• US 10,124,802 B2
• Filed: 08/20/2016
• Issued: 11/13/2018
• Est. Priority Date: 08/20/2016
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Gauthier, Christopher T.
• Primary Examiner(s): Sample, Jonathan L
• Application Number:
  US15/242,500
• Publication Number:
  US 20180050699A1
• Time in Patent Office: 815 Days
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 10/30 including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• CPC Class Codes: B60W 2030/18081 With torque flow from driveshaft to engine, i.e. engine being driven by vehicle
• CPC Class Codes: B60W 2050/0008 Feedback, closed loop systems or details of feedback error signal
• CPC Class Codes: B60W 2050/0064 using a remote, e.g. cordless, transmitter or receiver unit, e.g. remote keypad or mobile phone
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2520/105 Longitudinal acceleration
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/0605 Throttle position
• CPC Class Codes: B60W 2710/10 Change speed gearings
• CPC Class Codes: B60W 2710/30 Auxiliary equipments
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 30/18009 related to particular drive situations
• CPC Class Codes: B60W 30/18109 Braking
• CPC Class Codes: B60W 30/18136 Engine braking
• CPC Class Codes: B60W 50/082 Selecting or switching between different modes of propelling
• CPC Class Codes: B60W 50/085 Changing the parameters of the control units, e.g. changing limit values, working points by control input
• CPC Class Codes: B60Y 2300/18008 related to particular drive situations
• CPC Class Codes: Y02T 10/88 : Optimized components or subsystems, e.g. lighting, actively controlled glasses

Abstract

A device and method for a controlled deceleration based on a selected vehicle driving mode are disclosed, in which upon sensing a deceleration of a vehicle, a plurality of deceleration control signals based on a deceleration target for the selected vehicle driving mode are produced. At least one of the plurality of deceleration control signals are transmitted to prompt a controlled deceleration of the vehicle to correspond with a deceleration target for the selected vehicle driving mode. The method receives sensor data relating to the deceleration of the vehicle, and compares at least some of the sensor data with the deceleration target to generate a deceleration feedback signal. The method provides for adjusting the plurality of deceleration control signals based on the deceleration feedback signal to effect the controlled deceleration.

Claims

1. A method for controlled deceleration based on a selected vehicle driving mode, the method comprising:

sensing a deceleration of a vehicle;

producing, in response, a plurality of deceleration control signals based on a deceleration target for the selected vehicle driving mode, wherein the selected vehicle driving mode is one of a plurality of vehicle driving modes;

transmitting at least one of the plurality of deceleration control signals to prompt the controlled deceleration of the vehicle to correspond with a deceleration target for the selected vehicle driving mode;

receiving sensor data relating to the deceleration of the vehicle;

comparing at least some of the sensor data with the deceleration target to generate a deceleration feedback signal; and

adjusting the plurality of deceleration control signals based on the deceleration feedback signal to effect the controlled deceleration.

2. The method of claim 1, wherein the sensing the deceleration of the vehicle comprises:

receiving sensor data, via an accelerator sensor device, indicating an accelerator-off value for the vehicle.

3. The method of claim 1, wherein the plurality of deceleration control signals includes at least two of:

a throttle control signal;

a grill shutter control signal;

an alternator load control signal;

an air conditioner compressor control signal; and

a transmission lock-up control signal.

4. The method of claim 1, wherein the sensor data comprises at least one of:

instantaneous vehicle speed sensor data generated by a vehicle speed sensor device;

relational vehicle speed sensor data based on operation of a sensor input device; and

acceleration data from an acceleration sensor device.

5. The method of claim 4, wherein the acceleration sensor device comprises at least one of:

a capacitive accelerometer;

a piezoelectric accelerometer;

a semiconductor accelerometer; and

a Hall-effect accelerometer.

6. The method of claim 1, wherein the adjusting the plurality of deceleration control signals further comprises:

generating a set of the plurality of deceleration control signals based on the deceleration feedback signal to prompt a modified controlled deceleration.

7. The method of claim 1, wherein the adjusting the plurality of deceleration control signals further comprises:

selecting at least one other of the plurality of deceleration control signals to prompt the controlled deceleration of the vehicle to correspond with a deceleration target for the selected vehicle driving mode; and

transmitting the at least one other of the plurality of deceleration control signals.

8. The method of claim 7, wherein the at least one of the plurality of deceleration control signals and the at least one other of the plurality of deceleration control signals operate to sequentially prompt the controlled deceleration of the vehicle to correspond with the deceleration target for the selected vehicle driving mode.

9. The method of claim 7, wherein the at least one of the plurality of deceleration control signals and the at least one other of the plurality of deceleration control signals operate to cumulatively prompt the controlled deceleration of the vehicle to correspond with the deceleration target for the selected vehicle driving mode.

10. A method for controlled deceleration based on a selected vehicle driving mode, the method comprising:

sensing a deceleration of a vehicle;

producing, in response, a plurality of deceleration control signals based on a deceleration target for the selected vehicle driving mode, wherein the selected vehicle driving mode is one of a plurality of vehicle driving modes and at least one of the plurality of deceleration control signals prompts the controlled deceleration of the vehicle to correspond with a deceleration target for the selected vehicle driving mode;

comparing sensor data with the deceleration target to generate a deceleration feedback signal; and

adjusting the plurality of deceleration control signals based on the deceleration feedback signal to effect the controlled deceleration.

11. The method of claim 10, wherein the sensing the deceleration of the vehicle comprises:

receiving sensor data, via an accelerator sensor device, to indicate an accelerator-off value for the vehicle.

12. The method of claim 10, wherein the plurality of deceleration control signals include at least two of:

a throttle control signal;

a grill shutter control signal;

an alternator load control signal;

an air conditioner compressor control signal; and

a transmission lock-up control signal.

13. The method of claim 10, wherein the sensor data comprises at least one of:

instantaneous vehicle speed sensor data generated by a vehicle speed sensor device;

relational vehicle speed sensor data based on operation of a sensor input device; and

acceleration data from an acceleration sensor device.

14. The method of claim 10, wherein the adjusting the plurality of deceleration control signals further comprises:

generating a set of the plurality of deceleration control signals based on the deceleration feedback signal to prompt a modified controlled deceleration of the vehicle.

15. The method of claim 10, wherein the adjusting the plurality of deceleration control signals further comprises:

selecting at least one other of the plurality of deceleration control signals to further prompt the deceleration of the vehicle to correspond with a deceleration target for the selected vehicle driving mode; and

transmitting the at least one other of the plurality of deceleration control signals.

16. A vehicle control unit comprising:

a wireless communication interface to service communication with a vehicle network;

a processor coupled to the wireless communication interface, the processor controlling operations of the vehicle control unit; and

a memory coupled to the processor, the memory storing data and program instructions used by the processor, the processor configured to execute instructions stored in the memory that cause the processor to;

sense a vehicle deceleration;

produce, in response, a plurality of deceleration control signals based on a deceleration target for a selected vehicle driving mode, wherein the selected vehicle driving mode is one of a plurality of vehicle driving modes;

transmit, via the wireless communication interface, at least one of the plurality of deceleration control signals to prompt a controlled vehicle deceleration to correspond with a deceleration target for the selected vehicle driving mode;

receive sensor data relating to the vehicle deceleration;

compare at least some of the sensor data with the deceleration target to generate a deceleration feedback signal; and

adjust the plurality of deceleration control signals based on the deceleration feedback signal to effect the controlled vehicle deceleration.

17. The vehicle control unit of claim 16, wherein the processor is further configured to execute further instructions stored in the memory to sense the vehicle deceleration by:

receiving sensor data, via an accelerator sensor device, to indicate an accelerator-off value.

18. The vehicle control unit of claim 16, wherein the plurality of deceleration control signals includes at least two of:

a throttle control signal;

a grill shutter control signal;

an alternator load control signal;

an air conditioner compressor control signal; and

a transmission lock-up control signal.

19. The vehicle control unit of claim 16, wherein the processor is further configured to execute further instructions stored in the memory to adjust the plurality of deceleration control signals by:

generating a set of the plurality of deceleration control signals based on the deceleration feedback signal to prompt a modified vehicle deceleration.

20. The vehicle control unit of claim 16, wherein the processor is further configured to execute further instructions stored in the memory to adjust the plurality of deceleration control signals by:

selecting at least one other of the plurality of deceleration control signals to further prompt the vehicle deceleration to correspond with a deceleration target for the selected vehicle driving mode; and

transmitting the at least one other of the plurality of deceleration control signals.