Honda Motor Co., Ltd.

Eisuke Horii

Masahiko Asakura

Ryuji Sato

Yoshinari Sugita

Hiroshi Yoneguchi

Katsuya Matsuzaki

Tomohiro Watanabe

Katsuhito Kanbe

Hisanori Yanagida

Shinji Suto

Yuki Hotani

Hiroyuki Iwasaki

Keishiro Kikuchi

Takahiro Ohmi

Hideharu Murano

Shinichi Arai

Syumpei Tahara

Hideo Takeuchi

Hiroyuki Hase

Yohei Sato

Toru Watanabe

Kohei Hanada

Toshihiko Fukuda

Masayuki Ueno

Tadayoshi Okada

Shinji Sato

Soichiro Ueura

Ikuo Nonaga

Seiji Ohsaki

Tomoaki Kotaki

Shotaro Yamazaki

Kei Yamano

Atsuki Ohira

Shunichi Kawasumi

Jungo Kitamura

Takumi Satou

Yousuke Yamada

Miki Matsunobu

An air exhausting method of a vehicle brake system is provided. The air exhausting method of the vehicle brake system includes: a first step of actuating a slave cylinder on a pressurization side in a state where a switching valve communicates the slave cylinder with a brake fluid pressure control device, so that air retained in a passage section from the slave cylinder to the brake fluid pressure control device is exhausted from an air exhausting hole; a second step of actuating the slave cylinder on a depressurization side after the first step in a state where the air exhausting hole is closed, so that air retained in a bypass passage moves toward the passage section; and performing the first step again after the second step, so that air moved from the bypass passage to the passage section is exhausted from the air exhausting hole.

Air exhausting method of vehicle brake system

A vehicle brake system includes a first fluid pressure generating device for generating a fluid pressure according to a brake operating amount, a second fluid pressure generating device for generating a fluid pressure by moving a piston with an electric actuator, and a switching valve switchable between a first state allowing communication between the first fluid pressure generating device and a vehicle behavior stabilizing device and a second state allowing communication between the second fluid pressure generating device and the vehicle behavior stabilizing device. A control device places the switching valve in the second state during execution of automatic brake control, and places the switching valve in the first state when a predetermined abnormality occurs in the vehicle, except that the control device places the switching valve in the second state when an abnormality including inability of the second fluid pressure generating device to generate the fluid pressure occurs.

Vehicle brake system

A vehicle brake system including: a pressurizing motor that is connected to a brake pedal and configured to increase a braking force that is generated; and a processor. The processor is configured with a program to perform operations including: operation as an information acquisition part to obtain information on whether a shift position of an automatic transmission is in a non-driving mode and information on operation on the brake pedal; and operation as a braking force controller to perform, when a predetermined retention condition is met, control of braking force so that a stationary state of a host vehicle is maintained. When the predetermined retention condition is met and the shift position is in the non-driving mode, the braking force controller is configured to perform control to increase the braking force that is generated using the pressurizing motor once the brake pedal is in a non-operated state.

A vehicle control device that controls a vehicle electric brake system includes: a shutdown determination part that determines whether the vehicle control device itself has been previously shut down normally or abnormally; a cranking determination part that determines whether an instruction to perform a cranking at a start-up of the vehicle is based on a manual operation of a driver of the vehicle or automatically; a diagnosis part that performs a plurality of initial diagnoses of the vehicle control device at the start-up of the vehicle; and a diagnosis skip control part configured to provide control such that the diagnosis part skips at least one of the initial diagnoses when the shutdown determination part determines that the vehicle control device has been previously shut down abnormally, and at the same time, when the cranking determination part determines that the cranking has been conducted based on the driver's manual operation.

Vehicle control device

A vehicle control system includes a boost device, a braking unit, a cell motor, and a start operating unit. The boost device boosts a braking force applied by a foot brake to a vehicle with an output voltage from a battery. The braking unit, which is different than the foot brake, brakes the vehicle appropriately and keeps the braking force even in a case that the output voltage is not supplied from the battery, or which braking unit does not require the output voltage from the battery. The cell motor is driven by an output voltage from the battery and starts the engine. The start operation unit starts the cell motor, wherein the vehicle control system has a function not to start the cell motor when the start operation unit is operated, unless the braking unit is in operation.

Vehicle control system

A control unit for a vehicle comprises an automatic engine stop-and-restart unit for stopping the engine responsive to predefined stop conditions and for restarting the engine responsive to predefined restart conditions, and a following-cruise control unit for controlling the vehicle to follow a vehicle ahead responsive to predefined following-cruise conditions. The automatic stop-and-restart unit for stopping and restarting the engine is configured to modify at least one of the stop conditions and the restart conditions during the following-cruise control.

Stop-and-restart control of a vehicle engine

A stop control system for a vehicle is provided, which is capable of stably performing cranking for restarting an internal combustion engine and positively preventing the vehicle from moving by properly increasing a braking force of the vehicle, during an idle stop. In the stop control system for a vehicle according to the present invention, the engineis cranked by the starter motorusing the power supplied from the battery, when restart conditions are satisfied (stepin FIG.). Further, the stop control system includes a hydraulic pumpdriven by the power supplied from the battery, for increasing the braking force of the vehicle V. During a stop of the vehicle V, it is determined whether or not the braking force of the vehicle V needs to be increased (FIG.), and the hydraulic pumpis controlled according to a determination result. Further, in a case where it is determined that the braking force of the vehicle V needs to be increased, the operation of the hydraulic pumpis inhibited for a predetermined time period during cranking (stepsin FIG.).

Stop control system for vehicle

A stop control system for a vehicle, which is capable of positively preventing movement of a vehicle by positively increasing a braking force of the vehicle during an idle stop. In the stop control system for a vehicle of the present invention, the engineis cranked by a starter motorusing power supplied from the batterywhen restart conditions are satisfied during an idle stop (stepin FIG.). Further, the stop control system includes a hydraulic pumpdriven by power supplied from the battery, for increasing the braking force of the vehicle V. During a stop of the vehicle V, when it is determined that the braking force of the vehicle V needs to be increased (F_BFREQ=1), the hydraulic pumpis activated. Further, if the restart conditions are satisfied during operation of the hydraulic pump, the cranking is inhibited to continue the operation of the hydraulic pump(stepstoin FIG.).

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Wako, Japan

Eisuke Horii