Patent application number | Description | Published |
20130220285 | ROTATION SHAFT SUPPORTING STRUCTURE FOR ELECTRIC SUPERCHARGER - A rotation shaft supporting structure for an electric supercharger is provided with: a rotation shaft to which a compressor wheel is attached, the compressor wheel being a wheel of a supercharging side; an electric motor including a motor rotator securely installed to the rotation shaft, and a stator for applying torque to the motor rotator; a bearing provided on a bearing side closer to the compressor wheel than the motor rotator so as to support the rotation shaft; and a damper unit for absorbing shaft vibration of the rotation shaft, the damper unit being provided at a shaft end on an opposite side to the bearing side. | 08-29-2013 |
20140090626 | ELECTRIC SUPERCHARGER, ASSEMBLING METHOD OF THE SAME, AND INTERNAL COMBUSTION ENGINE - It is intended to implement an electric supercharger that has a simplified architecture, is easy to assemble, produces reduced vibration and noise, and has a motor inverter, making it possible to minimize losses in motor output and rotary-shaft output. The electric supercharger is provided with the following: an integrated housing with a built-in electric motor and motor inverter; and a ball bearing and damper-sleeve structure arranged on both sides of the electric motor. The damper-sleeve structure comprises a large-diameter sleeve, a spring guide, a coil spring, and a ball bearing. A gap is formed between the ball bearings and a sleeve and the large-diameter sleeve. The inner ring or outer ring of the ball bearings are supported by various support members disposed on both sides. An elastic O-ring that elastically supports the sleeve and large-diameter sleeve is provided on the outside of the sleeves. | 04-03-2014 |
20140125208 | MOTOR ROTOR STRUCTURE FOR ELECTRIC TURBO CHARGER AND METHOD OF ASSEMBLING SAME - A motor rotor structure for an electric turbo charger is manufactured at low cost with good quality by fixedly fitting, over a shaft, a rotor core having electromagnetic steel sheets pre-formed as an integrated stack. The rotor structure includes a rotor core which is rotated by a magnetic field formed by a stator in a housing; a shaft configured to rotate a compressor impeller and the rotor core together; and a bearing supporting the shaft. The rotor includes the rotor core including the electromagnetic steel sheets; a stopper portion formed at an intermediate portion of the shaft to restrict axial movement of the rotor core; and a pressing unit which presses the rotor core fitted over the shaft against the stopper portion. The pressing unit prevents a circumferential phase shift between the shaft and the rotor core by a pressing force thereof. | 05-08-2014 |
20140144412 | ELECTRIC SUPERCHARGING DEVICE AND MULTI-STAGE SUPERCHARGING SYSTEM - It is intended to provide: an electric supercharging apparatus wherein, with a simple structure, rotor windage loss in an electric motor for driving a compressor is reduced and good cooling performance is produced; and a multi-stage supercharging system using the electric supercharging device. This electric supercharging apparatus is provided with: a first cooling passage formed in a stator along a motor coil and communicating a gas supply port with a gas discharge port in a motor housing; and a first intake passage connecting the gas discharge port to an intake port of a compressor. This electric supercharging apparatus is configured to introduce outside air into the first cooling passage via the gas supply port by applying negative pressure to the first cooling passage via the first intake passage, thereby cooling the inside of the motor housing. | 05-29-2014 |
20140147306 | STRUCTURE AND METHOD FOR ADJUSTING BALANCE OF TURBOCHARGING DEVICE INCORPORATING ELECTRIC MOTOR - An object is to increase portions (increase the amount of correction), where the rotational balance of a rotary shaft of a turbocharging device incorporating an electric motor is adjusted, and to maintain sufficient motor driving force even under a high temperature condition. In a balance adjusting structure for the turbocharging device incorporating an electric motor, a rotor core | 05-29-2014 |
20150192133 | CENTRIFUGAL COMPRESSOR - An object is to position guide vanes for generating swirl flow at a housing inner circumferential side in front of an impeller wheel to improve a surge margin and to restrict decrease in a choke flow rate, while making the inclination angle of the guide vanes variable. A centrifugal compressor | 07-09-2015 |
20150192147 | CENTRIFUGAL COMPRESSOR - An object is to position a plurality of guide vanes for generating swirl flow at a housing inner circumferential side in front of an impeller wheel to improve a surge margin and to restrict the decrease in a choke flow rate, thereby increasing an operation range of a compressor. A compressor | 07-09-2015 |
20150285122 | ELECTRIC SUPERCHARGING DEVICE UTILIZING WASTE HEAT OF INTERNAL COMBUSTION ENGINE AND POWER SUPPLYING METHOD THEREOF - An object is to improve fuel consumption, drivability and exhaust gas purification by efficiently converting waste heat of the engine into electrical power and storing the electrical power in a dedicated electric storage so that the boost pressure from the electric air compressor can be flexibly outputted. The electric supercharging device includes a steam cycle device configured to expand the steam generated by waste heat of an engine to rotate an expander, a first generator connected to the expander and configured to generate an electrical power by torque of the expander, a dedicated battery which stores the electrical power generated by the first generator, and an electric supercharger configured to drive a compressor with a motor driven by the electrical power of the dedicated battery to generate compressed air. | 10-08-2015 |