The present invention is directed to a vehicle motion control system, which includes wheel brake cylinders, an automatic hydraulic pressure generating apparatus for generating a hydraulic braking pressure irrespective of operation of a brake pedal, a hydraulic pressure control valve device disposed between the pressure generating apparatus and the wheel brake cylinders to control the hydraulic braking pressure in each wheel brake cylinder, and a controller for controlling the pressure generating apparatus and the valve device in response to conditions of vehicle motion, and performing an automatically pressurizing control to the wheel brake cylinders at least when a brake pedal is not depressed, to perform a vehicle motion control. The controller is adapted to maintain the pressure generating apparatus to operate for a predetermined time period after the vehicle motion control was terminated, and control the valve device to shut off the communication between the pressure generating apparatus and the wheel brake cylinders, to modify the time period on the basis of the conditions of vehicle motion.

Vehicle motion control system

A hydraulic brake system with slip control for automotive vehicles comprising a master cylinder (2) pressurizable by a hydraulic power booster (1), in which system valve(s) (31,27,32,28,33,23) are inserted between the master cylinder (2) and the wheel brakes (29,30,24,25) connected to the master cylinder (2) which allow pressure fluid removal from the wheel brakes (29,30,24,25) that can be replenished out of the pressure chamber (19) of the hydraulic power booster (1) by way of a change-over valve (36). A stroke limitation of the brake pedal (8) is effected during slip control. The end surface of the master cylinder piston (5) close to the working chamber (16) being larger than the is effective surface of the booster piston (4), and wherein a stepped piston is employed as master cylinder piston (5) with an annular surface (18) thereof being adapted to be acted upon in the actuating direction by the pressure prevailing in the working chamber (16). A non-return valve (37, 38) is connected to the change-over valve (36) normally assuming its closed position through which the wheel brakes (29,30,24,25) can reacted upon directly by the pressure prevailing in the pressure chamber (10) of the hydraulic power booster (1).

Hydraulic brake system with slip control

Systems and methods for operating a hydraulically actuated device/system are described herein For example, systems and methods for the compression and/or expansion of gas can include at least one pressure vessel defining an interior region for retaining at least one of a volume of liquid or a volume of gas and an actuator coupled to and in fluid communication with the pressure vessel The actuator can have a first mode of operation in which a volume of liquid disposed within the pressure vessel is moved to compress and move gas out of the pressure vessel The actuator can have a second mode of operation in which a volume of liquid disposed within the pressure vessel is moved by an expanding gas entering the pressure vessel The system can further include a heat transfer device configured to transfer heat to or from the at least one of a volume of liquid or a volume of gas retained by the pressure vessel

Compressor and/or expander device

A paint manufacturing method includes receiving each of a group of fluid prepaints at different inputs of a fluid component mixing system, determining at a computer system a first fluid prepaint ratio, and mixing the fluid prepaints in accordance with the first ratio to form a base paint at an output of the mixing system. A paint manufacturing system includes a computer-controlled prepaint mixing system. The prepaint mixing system includes multiple fluid inputs providing for computer-controllable flow of prepaints into the mixing system. The computer system includes a memory storing software instructions that configured the computer system to receive user input selecting a base paint to be produced, determine a ratio of fluid prepaints needed to produce the base paint, and regulate each fluid flow control to establish, in the determined ratio, a flow of fluid prepaints entering the fluid mixing system. A paint manufacturing system includes multiple paint manufacturing sites that can each produce paint products. Each manufacturing site includes a site control computer to control a paint manufacturing process at the site and the system also includes a coordinating computer system that can exchange manufacturing operations data with each of the site control computers.

Distributed paint manufacturing system

Systems and methods for efficiently operating a hydraulically actuated device/system are described herein. For example, systems and methods for efficiently operating a gas compression and expansion energy storage system are disclosed herein. Systems and methods are provided for controlling and operating the hydraulic actuators used within a hydraulically actuated device/system, such as, for example, a gas compression and/or expansion energy system, within a desired efficiency range of the hydraulic pump(s)/motor(s) used to supply or receive pressurized hydraulic fluid to or from the hydraulic actuators. In such a system, a variety of different operating regimes can be used depending on the desired output gas pressure and the desired stored pressure of the compressed gas. Hydraulic cylinders used to drive working pistons within the system can be selectively actuated to achieve varying force outputs to incrementally increase the gas pressure within the system for a given cycle.

System and methods for optimizing efficiency of a hydraulically actuated system

A system for controlling a fluid pressure such a brake fluid pressure of a vehicle includes a pressure control cylinder having a control piston for varying a pressure of a confined fluid, and a motor for producing a mechanical force for actuating the control piston. To reduce the load of the motor, a hydraulic assist circuit is interposed between the motor and the control piston. The hydraulic assist circuit creates a hydraulic assist pressure by receiving the force of the motor, and converting the assist pressure into a linear motion of the control piston. The mechanical force of the motor is converted to hydraulic assist pressure through a pressurizing piston. The hydraulic assist pressure created by the pressurizing piston is exerted against a working piston. The working piston is connected to the control piston. A reduced motor load is obtained by making the area of the working piston larger than the area of the control piston, and the area of the control piston larger than the area of the pressurizing piston.

Hydraulic modulator with working piston connected to control piston

An anti-skid brake control system is associated with a control system for a power train which controls power train operation mode between a four-wheel drive mode, in which all four wheels are coupled with an automotive internal combustion engine to be distributed torque according to a controlled distribution ratio of an engine driving torque, and a two-wheel drive mode, in which two auxiliary driving wheels are disconnected from the engine to be free from engine driving torque and two driving wheels are connected to the engine to receive the engine driving torque. The anti-skid brake control system is so associated with the power train control system as to normally set the power train operation mode into the two-wheel drive mode during active state of anti-skid brake control, and to set the power train operation mode into the four-wheel driven mode in response to wheel slippage at the primary driving wheels greater than a predetermined threshold value.

Anti-skid brake control system for automotive vehicle, particularly for vehicle having selective two-wheel and four-wheel drive power train

An anti-skid brake control system comprises a limiter which provides an upper limit of variation of wheel speed indicative data. The limited wheel speed indicative data is derived with respect to each wheel. The greatest limited wheel speed indicative data is selected as vehicle body speed indicative initial data. The anti-skid brake control system derives a projected vehicle body speed indicative data by adding an integrated value of a longitudinal acceleration to the aforementioned vehicle body speed indicative initial data. The integrated value is provided with a predetermined offset value for compensating for error caused in a longitudinal acceleration sensor.

Anti-skid brake control system with derivation of precise projected vehicle body speed data utilizing longitudinal acceleration exerted on the vehicle body

Bremssteuereinrichtung fuer kraftfahrzeuge

An anti-skid brake control system two mutually different mode for projecting the vehicle body speed representative data. In the first mode, the vehicle body speed representative data is derived on the basis of an instantaneous wheel speed data which is latched upon initiation of vehicular braking operation or upon detection of vehicular braking deceleration, and an integrated value of a longitudinal acceleration indicative signal. On the other hand, in a second mode, the vehicle body speed representative data is derived on the basis of the initially latched instantaneous wheel speed data and a fixed value of wheel deceleration gradient data. A first vehicle body speed representative data derived through the first mode of operation and a second vehicle body speed representative data derived through the second mode of operation are selectively used as the vehicle body speed representative data.

Takeshi Fujishiro

Papers

Hydraulic modulator with working piston connected to control piston

Anti-skid brake control system for automotive vehicle, particularly for vehicle having selective two-wheel and four-wheel drive power train

Anti-skid brake control system with derivation of precise projected vehicle body speed data utilizing longitudinal acceleration exerted on the vehicle body

Bremssteuereinrichtung fuer kraftfahrzeuge

Anti-skid brake control system with feature of projection of vehicle body speed representative data with high precision