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AssigneesToyota Jidosha Kabushiki Kaisha, Denso Corporation
InventorsMasahiro Hara, Toshihisa Nihei, Naruyuki Matsui, Masahiro Matsuura
Estimating the term…
Each of target braking forces for front and rear wheels of a vehicle is calculated based on an amount of braking performed by a driver and a predetermined braking force distribution ratio between the front wheels and the rear wheels. Each of the target regenerative braking forces for the front and rear wheels, respectively, is calculated based on a corresponding one of the target braking forces such that a maximum regeneration efficiency is obtained. If the driver has performed an abrupt braking operation, if the driver has performed a braking operation when the vehicle runs at a high deceleration, or if the vehicle runs at a high lateral speed, it is quite likely that anti-skid control will be started afterwards. Therefore, the target regenerative braking forces are gradually reduced, and target frictional braking forces are gradually increased. If anti-skid control is started, the target regenerative braking forces are set as 0.
A braking force control apparatus for a vehicle, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Related to particular drive situations: braking
Characterised by the architecture of the hybrid electric vehicle: series-parallel type
Architecture of the driveline characterised by arrangement or kind of transmission units: driving a plurality of drive axles, e.g. four-wheel drive
Transmission for changing ratio: the transmission being a continuously variable transmission
Term ended 16 Jun 2022 (estimated)
The disclosure of Japanese Patent Application No. 2001-163221 filed on May 30, 2001 including the specification, drawings, and abstract is incorporated herein by reference in its entirety.
1. Field of Invention
The invention relates to a braking force control apparatus for a vehicle, and more particularly, to a braking force control apparatus for a vehicle which has a regenerative braking device and a frictional braking device and in which anti-skid control is performed.
FIG. 1 is a schematic structural view of a braking force control apparatus according to an exemplary embodiment of the invention, the braking force control apparatus being applied to a front-wheel drive vehicle that has regenerative and frictional braking devices in front and rear wheels and that is equipped with a hybrid engine.
FIG. 2 is a flowchart showing a braking force control routine executed by the braking force control apparatus according to the exemplary embodiment shown in FIG. 1.
FIG. 3 is a flowchart showing the first half of a target regenerative braking force correction routine for the front and rear wheels in step 70.
Hereinafter, a preferred exemplary embodiment of the invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a braking force control apparatus according to an exemplary embodiment of the invention, the braking force control apparatus being applied to a front-wheel drive vehicle that has regenerative and frictional braking devices in front and rear wheels and is equipped with a hybrid engine.
In FIG. 1, a hybrid engine 10 drives the front wheels of the vehicle. The hybrid engine 10 includes a gasoline engine 12 and a motor generator 14. An output shaft 16 of a gasoline engine 12 is coupled to an input shaft of a continuously variable transmission 18 into which clutches are built. The input shaft of the continuously variable transmission 18 is also coupled to an output shaft 20 of the motor generator 14. Rotation of an output shaft 19 of the continuously variable transmission 18 is transmitted to front-left and front-right axles 24FL, 24FR via a front differential 22, whereby the front-left and front-right wheels 26FL, 26FR are driven rotationally.