Toyota Jidosha Kabushiki Kaisha

Mitsui High-tec Incorporated

Other

Aisin Aw Co., Ltd.

Mistui High-tec, Inc.

Kohei Yoshida

Yuki Bisaiji

Mikio Inoue

Takamitsu Asanuma

Hiromasa Nishioka

Kazuhiro Umemoto

Shinya Hirota

Hiroshi Otsuki

Kotaro Hayashi

Shinichi Takeshima

Yasuaki Nakano

Kenji Sakurai

Yuki Haba

Kohki Nakamura

Masao Watanabe

Shunsuke Toshioka

Akio Koyama

Yuichi Sobue

Yusuke Nozaki

Masahide Iida

Yuka Nakata

Toru Uenishi

Shigeki Nakayama

Junichi Matsuo

Yoshihisa Tsukamoto

Go Kato

Akira Nagai

Junya Satake

Koutarou Hayashi

Toshihiro Mori

Kazuhiro Itoh

Tomihisa Oda

Daichi Imai

Shinya Sano

Nobumoto Ohashi

Takashi Fukumoto

Hirotoshi Mabu

Nobuyuki Takagi

Kazunobu Ishibashi

Keiichi Kaneshige

Takayuki Endo

Atsushi Hayashi

Kou Sugawara

Itsuya Kurisaka

Meio Gi

Yoshiteru Yazawa

Yoshiki Numata

Tadashi Watanabe

Masamichi Kuwajima

Ryohei Oono

Ko Sugawara

Shohei Yoshisako

Hibiki Mino

Masayuki Ono

There are provided core part manufacturing method and apparatus for manufacturing a core part of a rotary electric machine. The core part manufacturing method includes: injecting a molten resin from a side on one end surface of an iron core body into a plurality of space portions provided in the iron core body in a state where the iron core body is sandwiched and pressed. In injecting of the resin, a contact surface on an opposite side to a side where the resin is injected includes: a relief portion that is recessed without contacting to the one end surface; and a remaining portion that is adjacent to a non-contact region. The remaining portion is disposed in the contact surface on an outer peripheral side from the non-contact region, and the relief portion is disposed further in the contact surface on an outer peripheral side from the remaining portion.

Core part manufacturing method and core part manufacturing apparatus of rotary electric machine

According to one embodiment, a method for manufacturing an iron core product includes providing an iron core body which includes a magnet insertion hole in which a permanent magnet is disposed, injecting a molten resin into the magnet insertion hole of the iron core body at a first pressure, and setting a pressure applied to the molten resin to a second pressure lower than the first pressure after the molten resin is injected into the magnet insertion hole and before the molten resin is cured.

Method for manufacturing iron core product

A method of manufacturing a rotor includes mounting a plurality of core members to a shaft in a state by inserting the shaft into a shaft hole that penetrates through the plurality of core members in a height direction. An inner diameter of the shaft hole is larger than an outer diameter of the shaft. The method includes pressing the plurality of stacked core members together in the height direction to form a stack in which the plurality of core members are located adjacent to each other, and the shaft hole is engaged with the shaft.

Method of manufacturing a rotor

This disclosure relates to a method of manufacturing a laminated core including a plurality of poles arranged side by side in a circumferential direction, each pole having three or more magnet housing holes and magnets housed in the magnet housing holes. The manufacturing method includes: a step of preparing a lamination having the magnet housing holes; a step of injecting sealing resin into a pair of magnet housing holes arranged at symmetric positions with respect to a line extending in a radial direction of the lamination, with the magnets being disposed in the pair of respective magnet housing holes; and a step of injecting sealing resin into another magnet housing hole, with the magnet being disposed in the magnet housing hole.

Method of manufacturing laminated core

In a method of manufacturing a laminated core, a laminated core bodyincluding magnet insertion holesandwith magnet piecesinserted therein is placed between a molding (upper) dieand a retaining (lower) dieand a molding resinis filled from resin reservoir portions (pots)to fix the piecesin the holesandBetween the dieand the bodya guide memberis placed, which includes resin passagesprovided from the portionsto the holesandand gatesconnecting to the holesandon downstream sides of the passagesThe method can reduce lead time of a production line without replacing the molding dies for different laminated rotor cores and thus without preparing different types of molding dies.

A particulate filter for trapping the particulate matter which is contained in the exhaust gas is provided inside an engine exhaust passage. Additional fuel is secondarily injected from a fuel injector in an engine expansion stroke or exhaust stroke or hydrocarbons are secondarily added from an addition valve which is provided upstream of the particulate filter in the exhaust pipe. An amount of hydrocarbons which come from the fuel injector or addition valve and then adhere in the form of a liquid to the inflow end of the particulate filter, and an amount of particulate matter which reaches the inflow end of the particulate filter are respectively estimated. A degree of clogging at the inflow end of the particulate filter is estimated based on the amount of hydrocarbons and the amount of particulate matter.

Exhaust purification system for internal combustion engine

During execution of a first purification process of fluctuating a hydrocarbon concentration in exhaust gas flowing into a first catalyst with an amplitude within a prescribed range at a time interval within a prescribed range, when a switch request to a second purification process of purifying NOx in a second catalyst by adding urea water into the exhaust gas is generated, the switch to the second purification process is prohibited on the condition that a current NOx purification rate (a first purification rate R) is higher than a purification rate (a second purification rate R) on the assumption that the second purification process is executed, and an HC poisoning recovery stand-by process of reducing an additive amount of hydrocarbon per once in the first purification process is executed so as to reduce a slip amount of hydrocarbon into the downstream of the first catalyst.

Exhaust purification control device for internal combustion engine

In a method of manufacturing a laminated core, a laminated core bodyincluding magnet insertion holesandwith magnet piecesinserted therein is placed between a molding (upper) dieand a retaining (lower) die, and a molding resinis filled from resin reservoir portions (pots)to fix the piecesin the holesand. Between the dieand the body, a guide memberis placed, which includes resin passagesprovided from the portionsto the holesandand gatesconnecting to the holesandon downstream sides of the passages. The method can reduce lead time of a production line without replacing the molding dies for different laminated rotor cores and thus without preparing different types of molding dies.

An internal combustion engine is provided with a hydrocarbon feed valve arranged in an engine exhaust passage. When injection control for injecting hydrocarbons from the hydrocarbon feed valve for exhaust treatment is stopped, to prevent the hydrocarbon feed valve from clogging, hydrocarbons for preventing clogging are injected from the hydrocarbon feed valve when the engine is not discharging soot, that is, when the feed of fuel to the inside of the combustion chamber is stopped and, after hydrocarbons for preventing clogging are injected once, the injection of hydrocarbons for preventing clogging from the hydrocarbon feed valve is stopped until injection control for exhaust treatment is started.

Internal combustion engine

An internal combustion engine in which a hydrocarbon feed valve, exhaust purification catalyst, and NOselective reduction catalyst are arranged in an engine exhaust passage. A first NOremoval method which injects hydrocarbons from the hydrocarbon feed valve within a predetermined range of period and uses the reducing intermediate which is generated due to this so as to reduce the NOcontained in the exhaust gas and a second NOremoval method which makes the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst rich with a period longer than this predetermined range are used. When the first NOremoval method should be used and the amount of adsorbed ammonia at the NOselective reduction catalyst is large, use of the first NOremoval method is stopped.

Exhaust purification system of internal combustion engine

A three-way catalyst and an NOadsorption catalyst are disposed in an engine exhaust passage. In a predetermined low-load engine operation area, combustion in a combustion chamber is carried out at a lean base air-fuel ratio and an air-fuel ratio in the combustion chamber is changed to a rich range at the time of discharging NOfrom the NOadsorption catalyst. In a predetermined high-load engine operation area, the air-fuel ratio in the combustion chamber is controlled to a theoretical air-fuel ratio in a feedback manner. In a predetermined middle-load engine operation area, the combustion in the combustion chamber is carried out at the base air-fuel ratio lower than the base air-fuel ratio in the low-load engine operation area and the air-fuel ratio in the combustion chamber is changed to the rich range with a period shorter than a rich period of the air-fuel ratio for discharging NOin the low-load engine operation area.

Exhaust gas control apparatus for internal combustion engine

In an internal combustion engine, an exhaust purification catalyst (), hydrocarbon feed valve () and particulate filter () are arranged in an exhaust passage. If temperature increasing control should be performed when a first NOpurification method is performed, injection of hydrocarbons for the first NOpurification method is performed with a predetermined period and injection of hydrocarbons for temperature increasing control is performed in a time period when injection of hydrocarbons for the first NOpurification method is not performed, the first NOpurification method being configured to purify NOwhich is contained in the exhaust gas by injecting hydrocarbons from the hydrocarbon feed valve with the predetermined period, the temperature increasing control being configured to increase a temperature of the particulate filter to remove particulate matters trapped on the particulate filter. An amount of injection of hydrocarbons for temperature increasing control when an actual temperature of the particulate filter is low is set larger than that when the actual temperature of the particulate filter is high.

In an internal combustion engine of the present invention, an exhaust purification catalyst () and a hydrocarbon supply valve () are disposed in an engine exhaust path, and NOcontained in exhaust gas is purified by injecting hydrocarbon from the hydrocarbon supply valve () at a predetermined cycle. With respect to the injection amount per unit time of the hydrocarbon from the hydrocarbon supply valve (), there is a difference provided between the first half and the second half of one injection time period, and in the first-half injection time period (Y), the injection amount per unit time of hydrocarbon is made to be less as compared to the second-half injection time period (X).

In an internal combustion engine, a hydrocarbon feed valve () and an exhaust purification catalyst () are arranged in an engine exhaust passage. When releasing the stored NOfrom the exhaust purification catalyst (), usually combustion gas of a rich air-fuel ratio is generated in the combustion chamber () to make the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst () rich. When releasing the stored NOfrom the exhaust purification catalyst () in case where the temperature of the exhaust purification catalyst () is low, the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst () is made rich by injecting hydrocarbons from the hydrocarbon feed valve ().

A method for purifying exhaust gas of an internal combustion engine, including chemically reducing NOx that is contained in the exhaust gas when a concentration of hydrocarbons flowing into an exhaust purification catalyst is made to vibrate within a predetermined range of amplitude and within a predetermined range of period, wherein, during the chemical reduction, the NOx contained in the exhaust gas is reacted with reformed hydrocarbons to produce a reducing intermediate containing nitrogen and hydrocarbons, a reducing action of the reducing intermediate chemically reduces the NOx, and the NOx is chemically reduced without storing nitrates or with storing a fine amount of the nitrates in a basic layer of the exhaust purification catalyst.

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Gotenba, Japan

Kohei Yoshida