Toyota Jidosha Kabushiki Kaisha

Toshio Maeda

Toshio Takaoka

Natsuhiro Kato

A vehicle repair support system for supporting repair of a failed vehicle includes a storage device configured to store IDs of a plurality of donor vehicles registered in advance and parts mounted on the donor vehicles in association with each other, a support management device configured to specify a repair part needed to repair the failed vehicle based on defect information for the failed vehicle, and extract the donor vehicles on which the repair part is mounted from among the donor vehicles based on information stored in the storage device, and a request notification device configured to notify an owner of the donor vehicle extracted by the support management device of a request to provide the repair part.

Vehicle repair support system and vehicle repair support method

An abnormality diagnosis system is applied to a fuel supply system including a fuel pump that pumps fuel from a fuel tank and a fuel pipe in which fuel discharged from the fuel pump flows. The abnormality diagnosis system stores a minimum fuel pressure in the fuel pipe in one trip after a main switch of the fuel supply system is turned on and until the main switch is turned off and data indicating a state when the minimum fuel pressure was recorded as diagnosis data in a storage device. In the abnormality diagnosis system, an execution device determines a failure spot associated with a decrease in fuel pressure in the fuel pipe using the diagnosis data stored in the storage device and diagnoses an abnormality of the fuel supply system.

Abnormality diagnosis system for fuel supply system, data transmitting device, and abnormality diagnosis device

A control device is applied to a fuel supply system including a fuel pump that rotates an impeller in a housing and pumps fuel from a fuel tank and a fuel pipe in which fuel discharged from the fuel pump flows. The control device controls the fuel pump. The control device includes an execution device and a storage device that stores a program of a process which is performed by the execution device. In the control device, the execution device performs a coping process of increasing an amount of operation of the impeller when the impeller is deformed and interference with the housing is detected in comparison with a case in which the interference is not detected.

Control device for fuel supply system

A diagnosis apparatus is applied to an in-line three-cylinder internal combustion engine, and includes a diagnosing unit and an angular acceleration derivation unit. The diagnosing unit is configured to execute a diagnosis process for diagnosing whether there is a compression leak in any one of cylinders while the internal combustion engine is in steady operation. The angular acceleration derivation unit is configured to derive an angular acceleration of a crankshaft of the internal combustion engine. The diagnosing unit is configured to, in the diagnosis process, when an amount of change in the angular acceleration per a predetermined period during an expansion stroke of any one of the cylinders is less than or equal to a threshold amount of change, diagnose that there is a compression leak in the any one of the cylinders.

Diagnosis apparatus for internal combustion engine

A cause identifying device performs: determining that an operation of a transmission with a predetermined high load is a cause of oil temperature of hydraulic oil having been equal to or higher than the predetermined temperature when predetermined conditions that the transmission has operated with the predetermined high load in a target period immediately before the oil temperature of the hydraulic oil has been equal to or higher than the predetermined temperature and a vehicle acceleration in the target period has been equal to or higher than a predetermined acceleration value are satisfied; and determining that occurrence of a predetermined abnormality associated with a gear shifting device is the cause of the oil temperature of the hydraulic oil having been equal to or higher than the predetermined temperature when the predetermined conditions are not satisfied.

Cause identifying device

A control apparatus for an internal combustion engine, the internal combustion engine including a plurality of cylinders, and the control apparatus including: an electronic control unit configured to: a) determine whether or not acceleration of a crank shaft at compression top dead center is equal to or greater than a threshold value; b) determine that a compression loss has occurred in the cylinder, when the acceleration of the crank shaft is equal to or greater than the threshold value; and c) prohibit the determination of compression loss, when acceleration of rotation of the crank shaft at compression top dead center has occurred a first specific number of times consecutively in the plurality of cylinders.

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Okazaki, Japan

Toshio Maeda