Abstract: A communication device includes a communicator that is mounted in a mobile body and functions as a wireless access point, a power supplier configured to supply electric power at least to a driver that causes the mobile body to travel, a detector configured to detect the electric energy of the power supplier, and a controller configured to control at least one of communication strength and communication quality of the communicator based on the electric energy detected by the detector.

Abstract: A communication device includes a communicator controller. The communication controller configured to cause a communicator to communicate with a terminal device in a first mode or a second mode, in which the first mode is a mode in which communication conditions are better than in the second mode, and, when the communication controller has acquired permission information indicating that communication in the first mode is permitted according to completion of processing of a first procedure different from a second procedure required for communication in the second mode in response to a request from the terminal device, the communication controller causes the communicator to communicate with a terminal device associated with the permission information in the first mode.

Abstract: The purpose of the present invention is to provide: a sliding member having a lubricating film formed on the sliding surface thereof, and capable of exhibiting friction-reducing performance; and a friction reduction method for the same. To that end, the present invention entails coating the sliding surface with a titanium nitride-based material (for example, titanium carbon nitride, titanium nitride, or titanium aluminum nitride), adding a molybdenum dithiocarbamate with molybdenum in the amount of 600-1000 ppm to diesel engine oil, setting the arithmetic mean roughness of the sliding member to 2-10 nm, and upon converting the Sommerfeld number viscosity to Pa·s, the speed to s?1, and the load to mean Hertzian stress (Pa), then the lubrication conditions for use are within the range of 2.12365×10?19 to 5.94509×10?19.

Abstract: The purpose of the present invention is to provide: a sliding mechanism having a lubricating film formed on the sliding surface thereof, and capable of exhibiting friction-reducing performance; and a friction reduction method for the same. To that end, the present invention entails coating the sliding surface with chromium nitride, adding a molybdenum dithiocarbamate with molybdenum in the amount of 600-1000 ppm to diesel engine oil, setting the arithmetic mean roughness of the sliding member to 2-60 nm, and upon converting the Sommerfeld number viscosity to Pa·s, the speed to s?1, and the load to mean Hertzian stress (Pa), then the lubrication conditions for use are within the range of 2.12365×10?20 to 5.94509×10?19.

Abstract: The purpose of the present invention is to provide: a sliding member having a lubricating film formed on the sliding surface thereof, and capable of exhibiting friction-reducing performance; and a friction reduction method for the same. To that end, the present invention entails coating the sliding surface with a titanium nitride-based material (for example, titanium carbon nitride, titanium nitride, or titanium aluminum nitride), adding a molybdenum dithiocarbamate with molybdenum in the amount of 600-1000 ppm to diesel engine oil, setting the arithmetic mean roughness of the sliding member to 2-10 nm, and upon converting the Sommerfeld number viscosity to Pa·s, the speed to s?1, and the load to mean Hertzian stress (Pa), then the lubrication conditions for use are within the range of 2.12365×10?19 to 5.94509×10?19.