Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Kabushiki Kaisha Toyota Jidoshokki

Shingo Kumazawa

Masahiro Kawaguchi

Kiyohiro Yamada

Kazuya Kimura

Hiroyuki Nakaima

Kenji Yamamoto

Tetsuhiko Fukanuma

Ryo Matsubara

Masakazu Murase

Satoshi Umemura

Minoru Mera

Atsuyuki Morishita

Takeshi Imanishi

Noriaki Satake

Masayoshi Kozawa

In a check valve for a compressor, a valve element includes an abutting surface and an outer circumferential surface. A valve hole includes a large-diameter portion and a small-diameter portion. A communicating window has such a shape that an opening area thereof gradually becomes larger with increasing distance from a valve seat. The check valve has an open state, a fully closed state, and a buffering state. When the abutting surface separates from the large-diameter portion and the outer circumferential surface opens the communicating window, the open state is defined. When the abutting surface closes the large-diameter portion and the outer circumferential surface interrupts communication through the communicating window, the fully closed state is defined. When the abutting surface separates from the large-diameter portion and the outer circumferential surface interrupts communication through the communicating window, the buffering state is defined. The hunting phenomenon is suppressed.

Check valve for compressor

A compressor torque estimate device is used for a variable displacement compressor whose displacement is variable based on a compressor control signal for estimating a compressor torque of the compressor. The compressor torque estimate device includes a torque calculator and a corrector. The torque calculator calculates a torque required for driving the compressor based on the compressor control signal, thereby obtaining a calculated torque. The corrector corrects the calculated torque by a procedure of first-order lag, thereby obtaining a corrected torque. The corrector also estimates the corrected torque to be the compressor torque.

Compressor torque estimate device, engine controller and method of estimating compressor torque

In a variable-capacity swash-plate type compressor, which can vary the outlet capacity by controlling an inclination angle of a swash plate, the swash plate is aligned by contacting a washer ( ) with a tapered surface to the swash plate ( ). Thus, in a case where a compression operation is not carried out or in a case where a compression operation is carried out at a small outlet capacity regarded as zero substantially, the noises, etc., which generate between the swash plate and a driving shaft ( ), are inhibited.

Alignment means for the swash plate of a variable-capacity swash-plate type compressor

A fluid machine, in which the step of mounting a filter on a flow passageway can be easily automated and the latitude of filter arrangement is improved. A mounting recess is formed on the inner bottom surface of a rear housing. An inlet to a gas feed passageway opens to the bottom of the mounting recess. A control valve for adjusting the displacement of the compressor is arranged on the way of the gas feed passageway. A filter including a support ring and a filter member made of a woven wire in a shape of a cylinder with one end covered is fixedly secured in the mounting recess by press fitting. The head of the filter member is formed to project beyond the inner bottom surface when the filter is mounted in the mounting recess.

Fluid machine

A variable capacity type compressor includes a swash plate and pistons to effect compressing action. The tilting position of the swash plate is controlled by the pressure in a control pressure chamber into which a coolant in the discharge pressure region is introduced. The pressure in the control pressure chamber is controlled by a capacity control valve mounted to the rear housing in an inclined position relative to a plane perpendicular to the axis of the rotatable drive shaft.

Variable capacity type compressor with inclined capacity control valve

In a fitting structure of a control valve in a variable capacity compressor according to the present invention, a step portion,is formed by connecting two taper surfaces,and,, the diameter of each of which decreases progressively towards the depth of a fitting hole,(in an inserting direction of a control valve,) between each step surface portion,of a fitting hole,A first taper surface,at a deep part of each step portion,has a smaller inclination in the inserting direction than a second taper surface,on the inlet side. The first taper surface 93,is formed so that its inner diameter on the inlet side is a little greater than the outer diameter of each O-ring,disposed on each step surface portion,in a free condition.

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Kariya, Japan

Shingo Kumazawa