Abstract: A vehicle control apparatus includes a plurality of control units communicable with each other. The plurality of control unit includes a host unit and a plurality of lower units managed by the host unit. The vehicle control apparatus configured to perform: specifying a lower unit used for executing a predetermined operation among the plurality of lower units when received a signal for instructing any one of the plurality of lower units to start the predetermined operation of the vehicle control apparatus; outputting an activation request command to the lower unit used for executing the predetermined operation; and outputting, after a predetermined time elapsed since the activation request command is output, an operation start command of the predetermined operation to the lower unit used for executing the predetermined operation.

Abstract: A rotation-speed-calculation-apparatus includes: a detector configured to detect a rotation-angle of an engine; and a CPU and a memory coupled to the CPU. The CPU is configured to perform: calculating an engine-speed each time the detector detects a predetermined-angle based on a time-period required for the engine to rotate the predetermined-angle; and determining whether the engine-speed calculated is in a low-rotation range equal to or lower than a threshold-value or in a high-rotation range over the threshold-value. The CPU is configured to perform: the calculating including: calculating the engine-speed based on a time-period required for the engine to rotate a first-predetermined-angle when it is determined that the engine-speed is in the low-rotation range; and calculating the engine-speed based on a time-period required for the engine to rotate a second-predetermined-angle smaller than the first-predetermined-angle when it is determined that the engine-speed is in the high-rotation range.

Abstract: A communication control system includes: first/second control unit configured to control vehicle; first relay unit communicatively connected to the first control unit and having input unit to which data signal from diagnostic unit diagnosing state of the vehicle is input; second relay unit communicatively connected to the second control unit; first communication line communicatively connecting the first relay unit and the second relay unit; and second communication line disposed in parallel to the first communication line and communicatively connecting the first/second relay units. The data signal input to the first relay unit includes identification information. The first relay unit controls flow of data so that the data signal input to the first relay unit is transmitted through the second communication line when the data signal input to the first relay unit includes the identification information set to be communicated through the second communication line.

Abstract: A vehicle control apparatus includes a plurality of control units communicable with each other. The plurality of control unit includes a host unit and a plurality of lower units managed by the host unit. The vehicle control apparatus configured to perform: specifying a lower unit used for executing a predetermined operation among the plurality of lower units when received a signal for instructing any one of the plurality of lower units to start the predetermined operation of the vehicle control apparatus; outputting an activation request command to the lower unit used for executing the predetermined operation; and outputting, after a predetermined time elapsed since the activation request command is output, an operation start command of the predetermined operation to the lower unit used for executing the predetermined operation.

Abstract: A rotation-speed-calculation-apparatus includes: a detector configured to detect a rotation-angle of an engine; and a CPU and a memory coupled to the CPU. The CPU is configured to perform: calculating an engine-speed each time the detector detects a predetermined-angle based on a time-period required for the engine to rotate the predetermined-angle; and determining whether the engine-speed calculated is in a low-rotation range equal to or lower than a threshold-value or in a high-rotation range over the threshold-value. The CPU is configured to perform: the calculating including: calculating the engine-speed based on a time-period required for the engine to rotate a first-predetermined-angle when it is determined that the engine-speed is in the low-rotation range; and calculating the engine-speed based on a time-period required for the engine to rotate a second-predetermined-angle smaller than the first-predetermined-angle when it is determined that the engine-speed is in the high-rotation range.

Abstract: According to one or more aspects, a dual controller area network (CAN) is used to start a vehicle. A dual CAN bus network includes a first CAN (CAN1) bus and a second CAN (CAN2) bus. A transmission control unit (TCU) is in communication with an engine control unit (ECU) via the dual CAN bus network. The ECU controls actuation of a starter motor based on signals from the CAN1 bus and signals from the CAN2 bus sent by the TCU. Actuation of the starter motor places an engine of the vehicle in a starting mode.

Abstract: According to one or more aspects, a dual controller area network (CAN) is used to start a vehicle. A dual CAN bus network includes a first CAN (CAN1) bus and a second CAN (CAN2) bus. A transmission control unit (TCU) is in communication with an engine control unit (ECU) via the dual CAN bus network. The ECU controls actuation of a starter motor based on signals from the CAN1 bus and signals from the CAN2 bus sent by the TCU. Actuation of the starter motor places an engine of the vehicle in a starting mode.

Abstract: A control apparatus for an internal combustion engine includes a cylinder internal pressure sensor, a fuel injection parameter calculator, a driving device, and a sensor output signal processing device. The sensor output signal processing device is configured to set a noise reduction period in accordance with an opening time and an opening start time of a fuel injection valve and is configured to reduce, during the noise reduction period, noise that is included in a cylinder internal pressure sensor output signal and that is caused by opening of the fuel injection valve.

Abstract: A control apparatus for an internal combustion engine includes a cylinder internal pressure sensor, a fuel injection parameter calculator, a driving device, and a sensor output signal processing device. The sensor output signal processing device is configured to set a noise reduction period in accordance with an opening time and an opening start time of a fuel injection valve and is configured to reduce, during the noise reduction period, noise that is included in a cylinder internal pressure sensor output signal and that is caused by opening of the fuel injection valve.