Toyota Jidosha Kabushiki Kaisha

Denso Ten Limited

Yasuhiro Oshiumi

Yukari Okamura

Tatsuya Imamura

Kazuma Aoki

Kensei Hata

Takahito Endo

Yasuyuki Kato

Yushi Seki

Katsuya Iwazaki

Kunihiro Iwatsuki

Hideaki Komada

Kazumi Hoshiya

Yasunori Nakawaki

Takayuki Amaya

Akira Murakami

Yuji Iwase

Takashi Kawai

Hiroyuki Yamaguchi

Yosuke Suzuki

Hideyuki Suzuki

Koji Hokoi

Michitaka Tsuchida

Taiga Hagimoto

Hiroyuki Nishizawa

Masataka Osawa

Kensuke Yoshizue

Takanori Aoki

Hirotatsu Kitabatake

Kazuya Okumura

Yoshinori Maeda

Koji Sugiyama

Makoto Hirai

Satoru Ito

Akihiro Hosokawa

Yumeto Shiraki

Tatsuya Yoshida

Hideo Nakatsukasa

Kentaro Kanzaki

A vehicle control system is provided to maintain an SOC level of the battery during autonomous operation of the vehicle. The control system is applied to a vehicle that can be operated autonomously by controlling an engine, a motor, a steering system, a brake system etc. autonomously by a controller, and the vehicle is allowed to coast by manipulating a clutch. During autonomous operation of the vehicle, a first coasting mode in which the engine is stopped and the clutch is disengaged is selected if the SOC level is higher than a threshold level, and a second coasting mode in which the engine is activated and the clutch is disengaged is selected if the SOC level is lower than the threshold level.

Vehicle control system

A control system for a hybrid vehicle that reduces delay in engagement of a clutch when shifting an operating mode by manipulating the clutch. A controller is configured to adjust a speed of a first motor to a first standby speed at which the speed difference in a first clutch is reduced when an operating mode will be shifted from a single-motor mode to a first mode, and adjust a speed of the first motor to a second standby speed at which a speed difference in the second clutch is reduced when the operating mode will be shifted from the single-motor mode to a second mode.

Control system for hybrid vehicle

A control system for a hybrid vehicle configured to prevent a reduction in the purifying performance of the catalyst in a predetermined operating mode. An operating mode of the hybrid vehicle can be selected from a first hybrid vehicle mode, a second hybrid vehicle mode, and a fixed mode. A controller that is configured to restrict a shifting operation between the first hybrid vehicle mode and the second hybrid vehicle mode via the fixed mode, when the purifying device is being warmed or the purifying device has to be warmed.

A power-supply control device includes: a distribution adjustment unit adjusting electric energy; and a loss comparison unit comparing losses in power running and regeneration and determining, with respect to power running and regeneration, whether a loss in a current state is smaller. Further, the distribution adjustment unit adjusts the electric energy by performing the distribution in accordance with the remaining capacity ratio in the current state in a case where it is determined that the loss in power running is smaller when the current state is a power running state or in a case where it is determined that the loss in regeneration is smaller when the current state is a regeneration state.

Adjusting electric energy of plurality of batteries mounted in traveling vehicle

A control system for preventing engine stall due to slippage of a wheel during propulsion in a fixed mode in which an engine and the wheel are rotated at a fixed ratio. When a wheel slips in a first mode in which an engine and the wheel are rotated at a predetermined ratio, an operating mode is shifted to a second mode in which a torque transmission between the engine and the wheel is interrupted and the vehicle is propelled by torque of driving machine connected to the wheel, or to a third mode in which the vehicle is propelled by delivering torque of the engine to the wheel while establishing a reaction torque by a predetermined rotary member.

Control system for vehicle

A drive control device for a vehicle is configured: to determine whether or not a sound pressure level inside a vehicle cabin becomes a predetermined value or less, under a state where it is predicted that a meshing-type engagement mechanism is changed from a disengaged state to an engaged state; and to prohibit the meshing-type engagement mechanism from entering the disengaged state, when it is determined that the sound pressure level becomes the predetermined value or less. In the disengaged state, transmission of a power output from a driving force source to driving wheels as drive energy is interrupted.

Drive control device for vehicle and control method for vehicle

A control system for hybrid vehicles to prevent a reduction in a brake force when an electrical input to a battery is restricted. A controller is configured to execute a regeneration control to deliver a regenerative torque resulting from operating second motor as a generator to the drive wheels, and an engine brake control to deliver a brake torque resulting from a power loss of an engine to the output member. The controller is further configured to select an HV-Lo mode when an input power allowed to accumulate in the battery is smaller than a threshold power.

Drive force control system for hybrid vehicles

A control system for a hybrid vehicle configured to prevent an excessive drop in an engine speed and while reducing vibrations when decelerating the vehicle abruptly. When an abrupt decelerating operation is detected in the fixed mode, a controller shifts an operating mode from the fixed mode to the high mode or the low mode by disengaging one of engagement devices in which a torque applied thereto in the fixed mode is reduced smaller by an inertia torque of the motor resulting from the decelerating operation.

Control system for hybrid vehicles

A drive force control system for hybrid vehicles to prevent a reduction in drive force during reverse propulsion while operating an engine. An operating mode of a transmission mechanism can be selected from a first mode in which the output torque of the engine is delivered to the output member at a first predetermined ratio and a second mode in which the output torque of the engine is delivered to the output member at a second predetermined ratio that is smaller than the first predetermined ratio. A controller is configured to restrict selection of the first mode when the engine generates a power greater than a predetermined power during propulsion of the hybrid vehicle in the reverse direction.

A control system for hybrid vehicles to prevent a reduction in a drive force when an output power of a battery is restricted. A first motor translates an output power of the engine partially into an electric power. A transmission mechanism distributes an output torque of the engine to the first rotary machine side and an output member side. A second motor is operated by one of the electric power translated by the first rotary machine and an electric power accumulated in the battery to generate a power. An operating mode can be selected from a first mode in which the output torque of the engine is delivered to the output member side at a first ratio, and a second mode in which the output torque of the engine is delivered to the output member side at a second ratio. The second ratio is smaller than the first ratio. A controller is configured to restrict selection of the first mode when an available output power of the battery to be supplied to the second rotary machine is smaller than a predetermined value.

Drive force control system for hybrid vehicle

A drive force control system for hybrid vehicles configured to reduce a change in a drive force simultaneous execution of a starting operation of an engine and a shifting operation of a transmission. The drive force control is applied to a hybrid vehicle comprising: an engine connected to front wheels; a first motor connected to rear wheels; and a transmission that changes a speed ratio between the first motor and the rear wheels. A controller restricts execution of any one of an engine staring operation and a shifting operation of the transmission during execution of other one of the engine staring operation and shifting operation of the transmission.

A vehicle includes an engine, a transmission mechanism, and an electronic control unit. The electronic control unit performs first switching control when there is a request for switching from a low mode to a high mode. The first switching control is to release a first engagement mechanism, and switch a second engagement mechanism to an engaged state when a difference between input and output rotational speeds of the second engagement mechanism becomes equal to or smaller than a permissible value.

Vehicle, and method of controlling vehicle

A control system for hybrid vehicle that can limit damage on a battery resulting from cranking of an engine. the controller is configured to shift an operating mode from an EV-Lo mode to an EV-Hi mode if a peak power applied to a battery during shifting the operating mode from the EV-Lo mode to the EV-Hi mode is expected to exceed an upper limit input power to the battery.

Growing community of inventors

Gotemba, Japan

Yasuhiro Oshiumi