Abstract: An automobile moves at a traveling speed in accordance with the position of an acceleration pedal. A compressor is driven by the engine of the automobile. The discharge displacement of the compressor is adjusted by an external control procedure. When the position of the acceleration pedal reaches a determining value, or above at which it is determined that engine power is needed for accelerating the vehicle, the compressor is controlled such that the discharge displacement decreases. The determining value is selected by a controller in relation to the traveling speed detected by a speed sensor. The determining value increases as the speed increases.

Abstract: A flight path display apparatus provided in a cockpit of an aircraft has a head-up display unit. An image combining panel of the head-up display unit displays a flight path image projected from projecting system which is superimposed on the outside view. Computing system for calculating the image to be projected to the image combining panel calculates a display position of the target flight path based on data from storage system in which predetermined flight paths are stored and from aircraft flight data measuring system for measuring the position and attitude of the aircraft. When the display position of the target flight path is outside a display area of the image combining panel, a target mark indicative of a direction toward the flight path from the center of the display area blinks on the image combining panel. With the above construction, a flight path display apparatus which allows a pilot to keep sight on a target flight path is realized.

Abstract: An air bag apparatus to be disclosed has an air bag, an air bag driver for performing drive of the air bag to develop the air bag, and an air bag control device for controlling the drive of the air bag driver as a basic arrangement. The air bag control device has an arrangement in which an air bag operation selecting device having information related to selection of an operation state of the air bag driver can be connected to the air bag control device. Further, the air bag control device has a non-volatile storage device, determines a connection state of the air bag operation selecting device to the air bag control device, and stores information related to the determined connection state in the non-volatile storage device.