Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Hitachi Industrial Equipment Systems Co., Ltd.

Kan Kobayashi

Yoshinori Kawai

Tsutomu Ito

Masaki Koyama

Shuhei Nagata

Hiroshi Sakai

Takahiro Suzuki

Shinji Seto

Takashi Ogawa

Yuki Yoshida

Yosuke Tanabe

Naofumi Harada

Hiroshi Chikuma

Aya Mizukoshi

Tomoyuki Ri

Naoyuki Oohata

An air suspension apparatus includes a compressor configured to compress air, a tank configured to store the air, a tank-side suction conduit configured to supply the compressed air in this tank to an intake side of the compressor, a tank conduit connecting a discharge side of the compressor and the tank, an air suspension connected to the discharge side of the compressor via an air drier, an intake electromagnetic valve provided in the tank-side suction conduit, a return electromagnetic valve provided in the tank conduit, and a discharge conduit provided so as to branch off from between the discharge side of the compressor and the air drier and configured to be connected to an atmosphere by opening a discharge electromagnetic valve.

Air suspension apparatus

Provided is a compressor capable of achieving a reduction in overall size and an improvement in vehicle mountability by using a linear motor. The compressorcomprises a linear motorhaving a reciprocating mover, a compression unithaving a pistonconnected to the moverat one end side of the linear motorso as to reciprocate and a cylinderslidably accommodating the pistonto form a compression chamberB, and an air dryerconnected to a cylinder headof the compression chamberB of the compression unitand filled therein with a desiccantC. The air dryeris disposed along the axis in the movement direction of the moverthe piston

Compressor

A vehicle linear motor includes: a tubular casing; a pair of armatures placed and fixed in the casing; a mover formed in a flat plate shape and placed to face the pair of armatures and to be movable in the casing; and a support member configured to slidably support the mover such that the mover moves in a longitudinal direction of the mover. The mover formed in the flat plate shape includes a plurality of magnets that are arranged at intervals in the longitudinal direction. Each of the pair of armatures has a magnetic pole that is arranged to move the mover relative to the armatures in the longitudinal direction. The casing is mounted on a vehicle such that the longitudinal direction is a horizontal direction, and the mover and the armatures are placed to face each other in the horizontal direction.

Vehicle linear motor

An object of the present invention is to provide a linear motor and a compressor which are effective against a non-fixed structure in which end portions of a resonant spring are not fixed and are capable of restraining loads in an up-down direction and a left-right direction which act on a slider. A linear motor includes a slider () which is driven in a first direction, a resonance spring () which is capable of vibrating in the first direction, and a permanent magnet () which is provided at the slider () and is magnetized in a second direction perpendicular to the first direction. The linear motor includes a bearing () that is movable against both forces of a force in the second direction and a force in a third direction perpendicular to the first direction and the second direction, and an elastic-body support member () which connects the resonant spring () and the bearing () to each other.

Linear motor and compressor

An in-vehicle compression device includes: a compressor including a cylinder and a piston that is slidably provided inside the cylinder and defines a compression chamber; a linear motor including a movable element reciprocatably connected to the piston; and a controller configured to control driving of the linear motor. The in-vehicle compression device is configured to supply a working fluid compressed in the compression chamber to a pressure device provided in a vehicle. The controller is configured to variably adjust a stroke of the piston according to a state of the vehicle.

In-vehicle compression device

An air suspension system capable of raising both the vehicle front wheel side and the vehicle rear wheel side by using a single tank. The air suspension system () includes a front wheel-side air suspension () and a rear wheel-side air suspension () which are interposed between a vehicle body and associated axles to perform vehicle height adjustment in response to supply and discharge of air, a compressor () for compressing air, and a tank () for storing air compressed by the compressor. When the vehicle height is to be raised by the air suspensions, the front wheel-side air suspension is supplied with compressed air from the tank, and the rear wheel-side air suspension is supplied with compressed air from the tank after the compressed air has been pressurized by the compressor.

Air suspension system

An air suspension system includes an air suspension, a compressor, a dryer apparatus, and so forth. The dryer apparatus includes a dryer case, an inner cylinder, a first inlet port, a first outlet port, a first desiccant, an outer cylinder, a second inlet port, a second outlet port, a second other-end side filter, a second desiccant, and so forth. The first desiccant comprises a molecular sieve, for example, which exhibits high water adsorption performance at high temperature. On the other hand, the second desiccant comprises silica gel, for example, which exhibits high water adsorption performance at low temperature.

Dryer apparatus and air suspension system

An air suspension system includes air suspensions () performing vehicle height adjustment in response to supply and discharge of air, a compressor () compressing air, a tank () storing compressed air, a first passage () connecting between the delivery side of the compressor and the tank, and a second passage () connecting between the delivery side of the compressor and the air suspensions. A first dryer () is provided in the middle of the first passage to dry air flowing through the first passage. A second dryer () is provided in the middle of the second passage to dry air flowing through the second passage. Thus, compressed air generated from ambient air sucked in by the compressor can be dried by the second dryer and supplied directly into the air chambers of the air suspensions.

An air suspension system includes a tank, a tank-side open/close valve, an air suspension-side open/close valve, a system portion, and the like. The system portion includes a compressor, an air drier, and a first passage and a second passage provided between the tank-side open/close valve and the air suspension-side open/close valve in parallel, a discharge valve, a tank-side control valve, an air suspension-side control valve, and the like. Due to this configuration, the air suspension system regenerates the air drier by opening the discharge valve to thus cause the air in the second passage to flow from an opposite side toward one side of the air drier when no power is supplied to the tank-side control valve and the air suspension-side control valve.

In an air suspension system, starting of a compressor is facilitated in a condition in which there exists a pressure difference. There is provided an air suspension system in which air compressed by a compressor is supplied to a plurality of air chambers provided between a vehicle body side and a wheel side and configured to perform vehicle height adjustment in accordance with the supply and discharge of air. The compressor has a needle connected to a piston and extending in a moving direction of the piston, and an armature reciprocating the needle in the moving direction of the piston.

Growing community of inventors

Yokohama, Japan

Kan Kobayashi