Atsugi Motor Parts Company, Limited

Unisia Jecs Corporation

Nissan Motor Company Limited

Atsugi Unisia Corp.

Yukio Sudo

Toshinori Aihara

Seiji Akaike

Chiharu Nakazawa

Yukinori Otsuka

Ichiro Kaneda

An automotive brake system comprises a sump fluidly disposed in a housing, constructing a brake unit, and in the middle of a suction circuit of a pressure apply device including at least a pressure apply pump. During vehicle dynamics control or during vehicle stability control, the pressure apply rapidly sucks the brake fluid stored in the sump and quickly performs a pressure apply action, irrespective of the distance between the brake unit and a brake-fluid source. This ensures a smooth brake-fluid supply to the suction circuit of a return pump returning the brake fluid from the wheel-brake cylinder to the brake circuit upstream of a fluid-pressure control valve unit.

Automotive brake system

A brake-fluid reflux type anti-skid brake control system for an automotive vehicle, comprises a main brake-fluid line fluidly disposed between a master cylinder and a wheel cylinder for supplying a brake fluid from the master cylinder to the wheel cylinder during usual braking, a brake-fluid reflux line arranged in parallel with the main line for returning the brake fluid from the wheel cylinder to the master cylinder side during operation of the system, directional control valves arranged for controlling the respective fluid flow in the main brake-fluid line and in the reflux line, depending upon a skidding condition of a vehicle wheel, and a plunger type control valve arranged between the outlet port of the master cylinder and an upstream junction of the main line and the reflux line. The control valve is responsive to a fluid pressure representing whether the anti-skid brake control system is in an operative state or in an inoperative state, in a manner so as to provide a constricted brake-fluid flow therethrough to the wheel cylinder in the operative state of the system and to provide a full brake-fluid flow therethrough to the wheel cylinder in the inoperative state of the system.

Anti-skid brake control system

A hydraulic brake system comprises an electromagnetic normally open inflow valve fluidly disposed between a master cylinder and a wheel cylinder, and a hydraulically shiftable plunger valve fluidly disposed between the electromagnetic inflow valve and master cylinder. The plunger valve is responsive to hydraulic fluid forced out of the master cylinder for establishing a first state wherein flow of hydraulic fluid forced into the wheel cylinder is restricted or a second state wherein hydraulic fluid forced out of the master cylinder into the wheel cylinder is unrestricted.

Hydraulic brake system

A variable-delivery vane-type rotary compressor including receiving means for defining a space for rotatably receiving a disc-shaped rotary closure member, which is associated with one of the end openings of a by-pass passage, within the end wall of a compression chamber. The receiving means may also be provided on the peripheral wall of the compression chamber. The bearing means is provided between the rotary closure member and the end wall of the compression chamber.

Variable-delivery vane-type rotary compressor

A variable-delivery vane-type rotary compressor includes passage means for defining a by-pass passage establishing communication between an aspirator chamber and a compression chamber, the by-pass passage having end openings exposed to the aspirator chamber and the compression chamber; and control means for mechanically controlling the amount of fluid by-passed from the compression chamber to the aspirator chamber through the passage means in accordance with pressure in the aspirator chamber and a discharge chamber.

A variable-delivery vane-type rotary compressor includes means for controlling discharge by-passed from an actuating chamber and an inhalator chamber by changing area of opening provided between a front plate and a cam ring. The means can control discharge by rotation of a disc having at least one by-pass opening. The disc can rotate in accordance with signals produced from at least one sensor.

A rotary-vane compressor wherein the pump housing is formed with a first by-pass passage which is open at its one end to the first intake port of the two intake ports which are open to the pump chamber formed in the rotor and at its the other end with the high-pressure chamber formed in the main housing, and provided with first by-pass valve means so that the first by-pass passage is opened when an external signal is supplied, and the first ring plate mounted on one side of the cam ring is provided with an one-way flow check valve to block fluid communication between the first intake port and the low-pressure chamber to which a new refrigerant is conducted, only when the first by-pass passage is opened.

Growing community of inventors

Atsugi, Japan

Yukio Sudo