US 2020/0047762 A1Published application

Braking force control device

AssigneeToyota Jidosha Kabushiki Kaisha

InventorKazuki MIYAKE

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Abstract

A braking force control device includes a target acceleration calculation unit that calculates a first target acceleration based on an acquired operation amount of an accelerator pedal, a powertrain capability acquisition unit that acquires a braking force that is generable by a powertrain, and an instruction unit that instructs generation of braking forces in the powertrain and a brake. The instruction unit is configured to, when a first braking force for achieving the first target acceleration is equal to or less than the braking force that is generable by the powertrain, instruct a controller of the powertrain to generate the first braking force, and when the first braking force is larger than the braking force that is generable by the powertrain, instruct the controller of the powertrain to generate the braking force that is generable by the powertrain.

Claims4

Dependent claims

A braking force control device that controls a braking force applied to a vehicle based on an operation amount of an accelerator pedal of the vehicle, the braking force control device comprising:

a target acceleration calculation unit configured to acquire the operation amount of the accelerator pedal and calculate a first target acceleration based on the acquired operation amount of the accelerator pedal as a first process of the braking force control device;
a powertrain capability acquisition unit configured to acquire a braking force that is generable by a powertrain;
and
an instruction unit configured to instruct a controller of the powertrain and a controller of a brake to generate a braking force in the powertrain and the brake, respectively,
wherein the instruction unit is configured to, as the first process,
when a first braking force for achieving the first target acceleration is equal to or less than the braking force that is generable by the powertrain, instruct the controller of the powertrain to generate the first braking force, and
when the first braking force is larger than the braking force that is generable by the powertrain, instruct the controller of the powertrain to generate the braking force that is generable by the powertrain, and instruct the controller of the brake to generate a braking force corresponding to a difference between the first braking force and the braking force that is generable by the powertrain.

4 more elements

A braking force control device that controls a braking force applied to a vehicle based on an operation amount of an accelerator pedal of the vehicle, the braking force control device comprising:

a target acceleration calculation unit configured to acquire the operation amount of the accelerator pedal and calculate a second target acceleration based on the acquired operation amount of the accelerator pedal;
a powertrain capability acquisition unit configured to acquire a braking force that is generable by a powertrain;
and
an instruction unit configured to instruct a controller of the powertrain and a controller of a brake to generate a braking force in the powertrain and the brake, respectively,
wherein the instruction unit is configured to
when a second braking force for achieving the second target acceleration exceeds a predetermined value, instruct a brake driver model controller to generate a braking force corresponding to a difference between the second braking force and the predetermined value, the brake driver model controller being configured to cooperatively control the controller of the brake and one or more other devices according to a predetermined vehicle control model, the brake driver model controller being mounted on the vehicle,
when a portion of the second braking force that falls within a range up to the predetermined value is equal to or less than the braking force that is generable by the powertrain, instruct the controller of the powertrain to generate a braking force corresponding to the portion of the second braking force that falls within the range up to the predetermined value, and
when the portion of the second braking force that falls within the range up to the predetermined value is larger than the braking force that is generable by the powertrain, instruct the controller of the powertrain to generate the braking force that is generable by the powertrain and instruct the controller of the brake to generate a braking force corresponding to a difference between (i) a braking force corresponding to the portion of the second braking force that falls within the range up to the predetermined value and (ii) the braking force that is generable by the powertrain.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/435,668Filed 10 Jun 2019
Priority: JP 2018-1487337 Aug 2018
Published: 13 Feb 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

B60T 8/175
Using electrical or electronic regulation means to control braking: brake regulation specially adapted to prevent excessive wheel spin during…
B60W 30/18136
Braking: engine braking
B60T 8/3205
Responsive to a speed condition, e.g. acceleration or deceleration: acceleration
B60W 10/06
Including control of propulsion units: including control of combustion engines