Abstract: In a pneumatic brake system for a motor vehicle, a variable speed electric motor is connected to a high voltage direct current power supply for variable energization, thus varying the operating rate of a compressor and the rate of pressurization of the brake system storage tanks. The operating rate of the compressor is varied responsive to pressure readings taken from the storage tanks during pressurization to minimize energy consumption.

Abstract: In a pneumatic brake system for a motor vehicle, a variable speed electric motor is connected to a high voltage direct current power supply for variable energization, thus varying the operating rate of a compressor and the rate of pressurization of the brake system storage tanks. The operating rate of the compressor is varied responsive to pressure readings taken from the storage tanks during pressurization to minimize energy consumption.

Abstract: A plow blade assembly (24) and a position adjustment system includes a plow blade (26) mounted to a frame (14) of a vehicle (10), and an actuator (52) for adjusting the position of the plow blade relative to the frame of the vehicle. The actuator (52) includes a blade position sensor (34) for sensing an actual position of the plow blade (26) and inputting the actual blade position to a computer (44), and a user input receiver (50) for the user to input a desired position of the plow blade to the computer. The computer (44) compares the actual position to the desired position and causes the actuator (52) to move the plow blade (26) to the desired position without user intervention.