Fuji Jukogyo Kabushiki Kaisha

Subaru Corporation

Fujitsu Corporation

Masato Igarashi

Koji Matsuno

Takeshi Yoneda

Yosuke Morokuma

Sho Yoshida

Koichi Inoue

Tomohiro Yamada

Satoru Akiyama

Takahiro Kinoshita

Masaru Kogure

Koichiro Terai

Yoshiyuki Suehiro

Keisuke Hosokawa

Hirowatari Yosuke

An abnormality detection device for a hydraulic circuit including an oil pump, a switching unit switching between a fully discharged state and a partial discharge, a pressure regulator, a pressure regulation controller and a hydraulic detector, The device includes: a storage storing a maximum discharge pressure of oil capable of being discharged in the partially discharged state; a switching controller performing control of switching into the fully discharged state; and a determination unit determining that the switching unit has a fixation abnormality of the partially discharged state when a hydraulic pressure approximately corresponds to the maximum discharge pressure in the partially discharged state in a state where a hydraulic pressure higher than the maximum discharge pressure in the partially discharged state is set as a target hydraulic pressure and the pressure regulator is controlled in an effort to achieve the target hydraulic pressure after the switching control.

Abnormality detection for hydraulic circuit and abnormality detection method for hydraulic circuit

Abnormality detection device for a hydraulic circuit with oil pump capable of increasing pressure of oil sucked through a suction port and discharging the oil through discharge ports; a switching unit switching between fully and partially discharged states; a pressure regulation unit regulating oil pressure; and a hydraulic pressure detection unit that detects the oil pressure includes: a storage unit that stores a maximum discharge pressure in the partially discharged state; a switching control unit that switches to either one of the discharged states; a pressure regulation control unit that sets a target pressure higher than the maximum discharge pressure in the partially discharged state, and performs pressure regulation control to achieve the target pressure; and a determination unit that determines whether the switching unit has a fixation abnormality in one of the discharged states by comparing hydraulic pressure with maximum discharge pressure in the partially discharged state.

Abnormality detection device for hydraulic circuit and abnormality detection method for hydraulic circuit

[Object] To provide a shift control device that, in a shift control device of a vehicle equipped with an idling-stop mechanism and a shift-by-wire mechanism, is capable of preventing setting off at a timing that the driver does not expect when returning from an idling-stop state. [Solution] The SBW-CU () that constitutes the shift control device (), in the case of selection information for selecting the R range being output during an idling stop, switches the shift range of the automatic transmission () to the R range when the vehicle is braked, and switches the shift range to the N range or the P range when the vehicle is not braked and the shift range of the automatic transmission () is the D range. Also, the SBW-CU (), in the case of selection information for selecting the R range being output during an idling stop, maintains the shift range without switching it when the vehicle is braked and the shift range of the automatic transmission () is other than the D range.

Shift control device

A braking-force control device has a brake control function for performing brake control on a front outside wheel when a vehicle is detected to be in an oversteer condition during a turning operation and for performing brake control on a rear inside wheel when the vehicle is detected to be in an understeer condition during a turning operation. For preventing the oversteer condition, a command for reducing the engine torque is output. On the other hand, for preventing the understeer condition, the engine torque is limited in accordance with a permissible engine torque value that is calculated on the basis of a road-surface friction coefficient, and ground loads and lateral tire forces of individual wheels. If it is detected that engine braking is in operation, the engine torque is adjusted to substantially zero.

Vehicle braking-force control device

Friction-circle limit values of wheels are calculated, requested resultant tire forces and resultant tire forces of the wheels are calculated, requested excessive tire forces and excessive tire forces of the wheels are calculated, an over-torque is calculated, and a control amount is calculated. With reference to a preset map, the minimum driving force is set on the basis of a road-surface slope and a requested engine torque, and the minimum driving torque serving as a lower limit is calculated on the basis of the minimum driving force and a total gear ratio of a vehicle so as to perform lower-limit correction of the control amount.

Vehicle driving-force control device

A driving force control device includes an individual-wheel friction-circle limit-value calculating portion that calculates friction-circle limit-values of individual wheels, an individual-wheel requested-resultant-tire-force calculating portion that calculates requested resultant tire forces of the individual wheels, an individual-wheel resultant-tire-force calculating portion that calculates resultant tire forces of the individual wheels, an individual-wheel requested-excessive-tire-force calculating portion that calculates requested excessive tire forces of the individual wheels, an individual-wheel excessive-tire-force calculating portion that calculates excessive tire forces of the individual wheels, an excessive-tire-force calculating portion that calculates an excessive tire force, an over-torque calculating portion that calculates an over-torque, and a control-amount calculating portion that calculates a control amount that is output to an engine control unit.

Vehicle driving force control device

A main controller calculates permissible driving forces of individual wheels from a road-surface friction coefficient, ground loads of the individual wheels, and lateral forces of the individual wheels. The main controller then calculates a permissible engine torque on the basis of the calculated permissible driving forces so as to limit engine output. In addition, based on the calculated permissible driving forces, the main controller calculates a transfer-clutch torque for front-rear driving-force distribution control, a rear-wheel torque shift amount for left-right driving-force distribution control, and a steering-angle correction amount for steering-angle control.

Vehicle control device

A gate array integrated circuit incorporating memories and a method therefore can realize various bit/word constructions according to customer's requests. The gate array integrated circuit of the present invention provides a basic cell array region in which a plurality of basic cells are arranged, a memory cell matrix region in which a plurality of memory cells are arranged, and a plurality of peripheral circuits which include address input circuits and decoders to access the memory cells.

Growing community of inventors

Tokyo, Japan

Masato Igarashi