Hitachi Automotive Systems, Ltd.

Yasuhiko Nagata

Masataka Ota

Hiroshi Usami

Hiroshi Kanno

Katsunori Yamashita

Kou Moriya

Provided is an electric control unit which is configured to switch the functions of an LCC, an HSD, and an LSD depending on a load to be connected. A power-supply-side switching elementis provided in a path Lbetween a power supplyand a connector terminal. A ground-side switching elementis provided in a path Lbetween a groundand a connector terminal. A freewheeling diodeis provided in a path Lconnected to a connection point Pbetween the power-supply-side switching elementand the connector terminaland a connection point Pbetween the ground-side switching elementand the connector terminal. A switching elementis provided in the path L

Electronic control unit

Provided is a vehicle control apparatus which can output, to the outside, a signal input from a sensor to an arithmetic processing unit while keeping delay at a lower level. An ECU (vehicle control apparatus) includes an arithmetic processing unit having a pair of an input port and an output port assigned to a sensor signal indicating a signal output from a sensor. The arithmetic processing unit performs arithmetic processing by using the sensor signal input from the input port, and outputs the sensor signal from the output port.

Vehicle control apparatus

A fuel injection valve drive control device includes a boost circuit having a boost coil, a switching component (FFT or the like) supplying a switching current from a battery source voltage to the boost coil, and a boost capacitor accumulating a boosted voltage generated by the operation of the switching component; a discharge circuit for discharging the accumulated electric charge via a current limiter (e.g. discharge resistor, constant current source) and a discharge switch (FET or the like); and a monitoring circuit for monitoring the accumulated voltage. The discharge circuit is caused to operate when the control device is shutting down and performs a deterioration/failure diagnosis of the boost capacitor and an operation check of the discharge circuit on the basis of a monitored voltage value of the boost capacitor at starting the discharge operation and a monitored voltage value of the boost capacitor after a predetermined time has elapsed.

Growing community of inventors

Hitachinaka, Japan

Yasuhiko Nagata