Honda Motor Co., Ltd.

Hitachi Industrial Equipment Systems Co., Ltd.

Mitsubishi Electric Corporation

Kohei Sakai

Toshiaki Yabe

Takayuki Yanagisawa

Fumio Shohda

Norihiro Akiyoshi

Yukari Takada

Kenichi Hirosawa

Yuuji Itou

Takashi Nakajima

Shumpei Kameyama

Tomoo Suzuki

Takeshi Tsuchiya

Kyosuke Kuramoto

Kotaro Chiba

Natsuki Kawabata

Daihei Teshima

Yosuke Akino

Yojiro Watanabe

Masakatsu Okaya

Takeshi Sakimura

Yuki Taniyama

Fumio Shoda

Shota Tanimoto

Takayuki Onodera

Sho Nikaido

Shotaro Sano

Yuhi Kono

A suction flow path of a screw compressor includes a male-side flow path that opens in an axial direction with respect to working chambers in a suction process on the male rotor side and extends from a starting end positioned on one side of a virtual plane to a first termination end positioned on the other side; and a female-side flow path on the female rotor side that extends from the starting end to a second termination end positioned on the other side of the virtual plane. The male-side or the female-side first flow path wall is configured such that at least a partial area in a range from the starting end to the first or the second termination end is closer to a male-side or female-side rotor lobe section from the starting end side toward the first or second termination end side.

Screw compressor with improved suction flow

Provided is an air compressor that suppresses a rise in delivery temperature due to a change in atmospheric pressure, and consequently improves the life of parts. The air compressorincludes a motor, a compressor main bodydriven by the motorto compress air, a delivery pressure sensorthat senses a delivery pressure of the compressor main body, an atmospheric pressure sensorthat senses an atmospheric pressure, and a controller. The controllercompares the delivery pressure sensed by the delivery pressure sensorwith a set pressure, and performs operation control based on a result of the comparison. The controllercorrects the set pressure such that a ratio between the atmospheric pressure sensed by the atmospheric pressure sensorand the set pressure becomes a set value set in advance.

Air compressor

A male rotor of a screw compressor has a cooling flow path extending in an axial direction inside a discharge-side shaft section. A groove structure is provided at at least a part of a region on a wall surface of the cooling flow path between the position of a discharge-side end face of the male rotor and a mounting position of a discharge-side bearing. The groove structure includes grooves or a groove that has a lengthwise component in a circumferential direction of the screw rotor and that are spaced apart in the axial direction. A nozzle which is a stationary member is arranged inside the cooling flow path with a gap between the nozzle and the wall surface of the cooling flow path. The nozzle is arranged in such a manner as to overlap at least a part of the groove structure in the axial direction.

Screw compressor

In order to reduce operation in a rotation-prohibited frequency range and to prevent resonance in a gas compressor wherein inverter control is performed, this gas compressor has: a compressor main body that compresses a gas; a motor that rotationally drives the compressor main body; an inverter that changes the rotational speed of the motor; a check valve arranged downstream from the compressor main body; a pressure detection means that detects load-side pressure downstream from the check valve; and a control device that, in accordance with the pressure detected by the pressure detection means, controls the frequency output by the inverter. The control device performs a control whereby compressed gas having a prescribed pressure is generated/maintained by increasing/decreasing the frequency, and when the frequency that generates the compressed gas having the prescribed pressure includes a specific frequency, the inverter's output frequency is increased or decreased when the pressure detected by the pressure detection means reaches a pressure corresponding to a frequency that has a more constant pressure width than the prescribed pressure and does not include the specific frequency.

Gas compressor

Disclosed is lateral pressure control of a continuously variable transmission (CVT) with a transmission ratio changed by changing groove widths of a drive pulley and a driven pulley, a drive force from a drive source being transmitted to a wheel. A control part controlling respective lateral pressures of the drive pulley and the driven pulley is provided. The control part sets an increase correction amount of the lateral pressure of the drive pulley to a first lateral pressure increase correction amount if the CVT is not in an in-gear state or a shift position is consistent with a traveling direction of the vehicle, and, sets said amount to a second lateral pressure increase correction amount smaller than the first lateral pressure increase correction amount if the CVT is in the in-gear state and the shift position is not consistent with the traveling direction of the vehicle.

Control device and control method of continuously variable transmission

In a plane perpendicular to the optical axis () of a lens (), the direction in which the cylindrical surface has zero curvature is the direction of generatrix of the lens (), and the direction in which the cylindrical surface has non-zero curvature and that is orthogonal to the direction of generatrix is the direction of curvature of the lens (). A light source () is disposed at the focal position () in the direction of generatrix on the side of the incident surface () of the lens (), and emits light toward the incident surface () of the lens (), the light having a difference between the divergence angle in the direction of generatrix of the lens () and the divergence angle in the direction of curvature of the lens ().

Parallel light generation device

A lens () has an incidence surface () having a cylindrical shape and forming a concave shape, and an emitting surface () forming a convex shape with respect to an optical axis (). A light source () has a large divergence angle in a vertical direction, and a divergence angle in a horizontal direction which is smaller than that in the vertical direction. The light source () is located at a position of focal length of the lens () in the vertical direction on a side of the incidence surface. The horizontal direction of the light source () is aligned with a curvature direction of the cylindrical shape of the lens ().

Collimated light generating apparatus

A hydraulic control device and hydraulic control method of a transmission are provided. The hydraulic control device of a transmission, which includes a forward clutch engaged in a Drive range, a reverse brake engaged in a Reverse range, and a switching valve that is able to selectively switch supply of a hydraulic pressure to the forward clutch and the reverse brake, wherein the hydraulic control device receives a shift position of a vehicle on which the transmission is mounted and idling stop information. When the range is switched to the Reverse range from the Drive range during idling stop, and the switching valve is positioned at a position at which a hydraulic pressure is able to be supplied to the reverse brake, rotational speed increase control with a rotational speed of an electric oil pump higher than a normal rotational speed is performed.

Hydraulic control device and hydraulic control method of transmission

Provided are a control device and a control method of a continuously variable transmission capable of preventing an endless member from slipping even when a parking lock is released. On a condition that a vehicle is in an idling stop state and a parking lock mechanism is in a parking lock state, rotation speed increase control configured to increase a rotation speed of an electric oil pump is executed so that the endless member can be prevented from slipping with respect to a driven pulley even when the parking lock mechanism is switched to a parking lock released state.

Control device of continuously variable transmission, control method thereof, and continuously variable transmission and vehicle using the same

There are provided: a planar waveguide in which claddings () and () each having a smaller refractive index than a laser medium for absorbing pump light () are bonded to an upper surface () and a lower surface () of a core () which is formed from the laser medium; pump light generation sources () and () for emitting pump light () to side surfaces () and () of the core (); and laser light high reflection films () and () formed on side surfaces () and () of the core (). Each of side surfaces () and () of the cladding () corresponding to the side surfaces () and () of the core () has a ridge structure () in which a part thereof is recessed.

Planar waveguide laser apparatus

A laser includes a wavelength selecting elementthat selectively reflects laser beams with wavelengths &#x3bb;=&#x3bb;, &#x3bb;, &#x3bb;, . . . , &#x3bb;(n&#x2267;1) of different laser oscillation modes from among fundamental oscillation wavelengths of laser beams passing through a wavelength conversion element, and the wavelength conversion elementthat converts the laser beams with the wavelengths &#x3bb;=&#x3bb;, &#x3bb;, &#x3bb;, . . . , &#x3bb;(n&#x2267;1) of different laser oscillation modes reflected by the wavelength selecting elementto harmonics. When using a material with a wide gain band as a laser mediumof a solid-state laser element, a waveguide laser is implemented capable of carrying out high-efficiency wavelength conversion at a plurality of wavelengths within the gain band.

Waveguide laser

A hydraulic pressure supply system, which is capable of properly controlling a degree of engagement of a clutch, thereby making it possible to improve vehicle drivability. The hydraulic pressure supply system includes a first hydraulic pressure supply device that uses an internal combustion engine as a motive power source and supplies hydraulic pressure to the clutch, and a second hydraulic pressure supply device that supplies hydraulic pressure to the clutch by being driven by a motive power source other than the engine, detects a vehicle speed and a rotational difference parameter that represents a difference in rotational speed between an output shaft of the clutch and an input shaft of the clutch, and controls clutch supply hydraulic pressure which is hydraulic pressure supplied to the clutch, according to the detected vehicle speed and rotational difference parameter, when restart conditions of the engine are satisfied.

Hydraulic pressure supply system

An oil free compressor includes a cooling fan, a low-pressure stage air-cooled heat exchanger, a high-pressure stage air-cooled heat exchanger, and a lubricating oil air-cooled heat exchanger. The cooling fan is provided independently from each of the low-pressure stage air-cooled heat exchanger, the high-pressure stage air-cooled heat exchanger, and the lubricating oil air-cooled heat exchanger.

Oil free compressor system

There is provided a control system for a vehicle, wherein the control system controls an electric oil pump of the vehicle to start before an idling stop is brought about, when a condition on a vehicle speed is satisfied which is set in accordance with a variation of a running speed of the vehicle while the vehicle is running based on the driving force generated by a driving force generation unit thereof. Consequently, the electric oil pump can be started at an optimum timing before the idling stop is brought about.

Vehicle control system

A control apparatus controls a vehicle provided with an internal combustion engine, an oil pump actuated by the engine for pressurizing operation oil, and a belt-type continuously variable transmission to which the pressurized operation oil is supplied. An automatic stop of the engine is performed when a predetermined condition is satisfied. A transmission ratio of the continuously variable transmission is detected, and a continuable time period of the automatic stop of the engine is set according to the detected transmission ratio upon automatically stopping the engine. The automatic stop is controlled to end when a continuation time period of the automatic stop of the engine expires. Good vehicle start performance can be obtained when restarting the engine after the automatic stop, regardless of the brake operation manner and the like upon stopping the vehicle.

Growing community of inventors

Tokyo, Japan

Kohei Sakai