Abstract: A vehicle power supply system includes a vehicle power supply apparatus including a processor. When a disaster by which foreign matter might be deposited on a road occurs, the processor preferentially performs power supply to a road maintenance vehicle configured to perform maintenance on the road.

Abstract: A control device for a hybrid vehicle, the control device including: a controller performing control on an engine operating point along an equal power curve when a target charge amount of a battery exceeds an upper limit value of a battery charge power due to a further depressing of an accelerator pedal. Further, when a ratio of a noise derived from a powertrain of the hybrid vehicle to all noises is less than a ratio of a background noise to the all noises, or when a deceleration is requested, the controller returns the engine operating point from an engine operating point on the equal power curve to an engine operating point within an operating region where power generation efficiency is high.

Abstract: A hybrid type vehicle designed to use an engine and motor generators to drive the vehicle, wherein the engine is provided with a variable compression ratio mechanism and a variable valve timing mechanism. When the vehicle is backing up, one motor generator is used to generate an output for vehicle drive use. If the engine is made to operate at this time, the engine torque and the engine speed are made to change along a minimum fuel consumption rate operation line.

Abstract: A vehicle multiplex transmission apparatus which can operate all the auxiliary units of a vehicle even when a power supply line of the vehicle is locally short-circuited. This vehicle multiplex transmission apparatus includes a plurality of control nodes arranged in respective portions of a vehicle, for controlling vehicle auxiliary units, and a multiplex transmission line for connecting among the plurality of control nodes. The control nodes are connected to a power supply node arranged at a predetermined position of a vehicle body through two independent systems of first and second power supply lines. The first power supply line supplies power to vehicle travel auxiliary units. The second power supply line supplies power to general system auxiliary units, but it can supply power to the travel auxiliary units as needed.

Abstract: When a message is transmitted, frame by frame, from any one (10) of a plurality of multiplex nodes to a common multiplex bus (MB) to which the multiplex nodes are connected, each of the multiplex nodes (20 and 30) determines that transmission of a frame therefrom is allowed when it detects a transmission permission signal (b, b') added to the frame after detection of and idle state of the multiplex bus, and starts transmitting a message data frame. This makes it possible to properly implement priority-based control according to the priority levels of the data frames irrespectively of variations in the reference clocks of the multiplex nodes. Further, receiving multiplex nodes perform frame synchronization at the rise of a special code (a) of a start code (SOM) of a message data frame, and then perform re-synchronization at the rise of a special bit pattern (b") which includes a passive bit and a dominant bit.

Abstract: Communication nodes which respectively transmit periodic information and non-periodic information in multiplex fashion are provided separately. These communication nodes selectively transmit periodic information to a multiplex transmission line which is originally for transmitting the non-periodic information or non-periodic information to a multiplex transmission line which is originally for transmitting the periodic information in accordance with the state of transmission/reception of the periodic information and non-periodic information.