Denso Corporation

Takeo Umesaka

Mikio Teramura

Takeshi Suganuma

An electronic controller controls a drive of a vehicle that uses an internal combustion engine and an electric motor as a driving source. The electronic controller includes a travelling distance calculation portion, a diagnosis portion, and a control portion. The travelling distance calculation portion calculates a travelling distance where the vehicle can travel by using the electric motor as the driving source, based on a power surplus quantity of a battery that supplies electric power to the electric motor. The diagnosis portion diagnoses a diagnosis object included in the internal combustion engine. The control portion controls the internal combustion engine. When a condition that the travelling distance is shorter than or equal to a threshold distance that is predetermined is satisfied, the control portion forcibly drives the diagnosis object and controls the diagnosis portion to execute a malfunction diagnosis of the diagnosis object.

Electronic controller

An in-vehicle electronic control unit (ECU), stores behavior information, when a specific vehicle behavior (i.e. a vehicle behavior that does not correspond to the driver's driving operation) is detected. The in-vehicle electronic control unit (ECU) stores, as the behavior information, vehicle travel information, a storage time of the vehicle travel information, and storage execution information that indicates that the vehicle travel information is stored. When the engine of the vehicle stops, the ECU first executes an abnormality check of a CPU operation, when, based on the storage execution information of the behavior information, the vehicle travel information is stored. The ECU stores, as abnormality check information, an abnormality check result, an execution time of the abnormality check, and check execution information indicating that the abnormality check has been executed, and after the storage of the abnormality check information, the ECU stops power supply to the CPU.

In-vehicle electronic control unit, diagnosis tool and diagnosis system

Disclosed is an electronic control apparatus for a vehicle which includes: 1) first storage means for storing vehicle identification information unique to the vehicle; 2) second storage means for storing immobilizer identification information unique to the vehicle; 3) command receiving means for receiving, from an external control apparatus, an update command that commands the electronic control apparatus to update the vehicle identification information stored in the first storage means; and 4) information handling means for handling all the information stored in the first and second storage means. Moreover, in the electronic control apparatus, upon receipt of the update command by the command receiving means, the information handling means updates the immobilizer identification information stored in the second storage means as well as the vehicle identification information stored in the first storage means.

Electronic control apparatus with automatic information update when transferred between vehicles

An electronic control unit (ECU) for a vehicle is disclosed. The subject ECU stores: vehicle ID; and first cross-check information different from the vehicle ID. The subject ECU acquires second cross-check information different from the vehicle ID. The second cross-check information is stored in an external ECU that is mounted in a same vehicle as the subject ECU is mounted. The subject ECU determines whether the first cross-check information matches the second cross-check information. Upon receiving an instruction for changing the vehicle ID, the subject ECU prohibits a change the vehicle ID if the first cross-check information matches the second cross-check information, and the subject ECU changes the vehicle ID if the first cross-check information does not match the second cross-check information.

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Gifu, Japan

Takeo Umesaka