Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

The University of Tokyo

Kabushiki Kaisha Toyota Chuo Kenkyusho

Other

Kiyoshi Nakanishi

Takeshi Okumura

Tokuta Inoue

Mutsumi Kanda

Takeshi Kotani

Souichi Matsushita

Takamitsu Asanuma

Satoshi Iguchi

Kazuhiko Ito

Masao Yasukawa

Isamu Iezuka

Toshio Tanahashi

Toshiaki Tanaka

Shinichi Takeshima

Makoto Ogiso

Katsuhiko Motosugi

Kenji Katoh

Hideyuki Nishida

Keiji Yoeda

Yoshihiro Iwashita

Shouji Katsumata

Kazuhiko Shiratani

Ryuichi Deguchi

Taiyo Kawai

Tomomi Yamada

Shinya Hirota

Norihiko Nakamura

Hiroshi Sawada

Hidetaka Nohira

Keiso Takeda

Kenji Kato

Makoto Fujita

Takayuki Demura

Masaki Kawano

Hideaki Muraki

Shizuo Abe

Hiroshi Nomura

Tatehito Ueda

Tetsuro Kihara

Takahiro Kojima

Ituo Koga

Masayoshi Tokoro

Masato Kawauchi

Soichi Matsushita

Mikio Nakajima

Norihisa Nakagawa

Kazuhiro Itoh

Hiroshi Okano

Takashi Kato

Koichiro Nakatani

Koichi Kimura

Toyokazu Baika

Yasushi Araki

Kiyoshi Kobashi

Masaaki Tanaka

Katsuhiko Hirose

Nobuaki Kayanuma

Isao Matsumoto

Yoshimasa Watanabe

Yujiro Oshima

Koji Yokota

Kiyohiko Oishi

Masato Gotoh

Masahiko Nakada

Mikio Murachi

Jun Harada

Kenichi Nomura

Masahiko Sugiyama

Shigenori Sakurai

Katsujiro Sato

Kiyoshi Isogai

Eishi Ohno

Michiaki Ujihashi

Kenji Ohkubo

Shuji Morita

Rio Shimizu

Satomi Seto

Tomoki Kodama

Masahito Shibata

Yuichi Takano

Toshiharu Matsuura

Kazuhiko Itou

Takehide Kawamichi

Mutumi Kanda

Tomio Warashina

Tsuyoshi Haneda

Disclosed is a synthesis method for synthesizing in a short time and selectively a microcrystal of a polymer complex having three three-dimensionally and regularly arranged channels. Specifically disclosed is a synthesis method of a polymer complex crystal wherein (1) a metallic solution, which is a mixture of zinc halide(II) and a solvent A that can dissolve the zinc halide, is mixed with (2) a ligand solution, which is a mixture of a tridentate ligand that has three coordination sites coordinated to zinc of the zinc halide and a solvent B that can dissolve the tridentate ligand, to be a single-phase solution, thereby synthesizing a microcrystal of a polymer complex having a three-dimensional coordination network formed by coordinating the tridentate ligand to the zinc and having channels that are three-dimensionally and regularly arranged in the three-dimensional coordination network.

Synthesis method of polymer complex crystal

An embodiment of the present invention includes a method for chemically modifying inner surfaces of channels capable of further regulating characteristics of the internal environment of channels, by forming a polymer complex having a specific channel group B, the channel environmental characteristics of which are regulated by substituents A, followed by utilizing the channels of the channel group B as a reaction field to convert the substituent A to a different substituent. The method may comprise including a guest molecule in the channel of the channel group B in which the substituents A are arranged; and reacting the guest molecule with the substituent A in the channel to convert the substituent A to a substituent A', and to arrange the substituent A&#x2032; regularly directing to the inside of the channel of the channel group B or any channel of other channel groups.

Polymer complex having channels and method for chemically modifying inner surfaces of channels of polymer complex

A particulate filter () for removing particulates included in an exhaust gas discharged from a combustion chamber () is arranged in an engine exhaust passage. The particulate filter has wall partitions () which the exhaust gas can pass through. The particulates included in the exhaust gas are removed by oxidation in the interior of the partitions. The particulates are fluidized in the interior of the partitions.

Exhaust gas purification device

An apparatus is provided which includes an internal combustion engine of a lean-burn type, an NOx catalyst disposed in an exhaust passage of the engine so as to remove nitrogen oxides contained in exhaust gas emitted from the engine, and a variable valve control system capable of changing at least one of the opening and closing timing and a lift of the intake valve and/or the exhaust valve for each cylinder of the engine. The variable valve control system is controlled so that the exhaust gas to which the NOx catalyst is exposed is controlled so as to be suitable for removing a selected gaseous component from the NOx catalyst when the selected gaseous component should be removed. A method of purifying an exhaust gas emitted from the above engine is also provided.

Internal combustion engine having variable valve control system and NOx catalyst

An internal combustion engine includes two intake side solenoid driving valve mechanisms for opening and closing intake valves by cooperation of an electromagnetic coil and a spring, and/or two exhaust side solenoid driving valve mechanisms for opening and closing exhaust valves provided on each cylinder. A controller commands a driving circuit to cause the valve-opening timing of the exhaust valves or the intake valves to be different.

Internal combustion engine and method for controlling valve of internal combustion engine

Exhaust purification device of internal combustion engine

Exhaust purification device of an internal combustion engine

A lean NOx reduction catalyst capable of reducing NOx through reaction of H.sub.2 with NOx at low temperatures below 350.degree. C. is installed in a downstream portion of an exhaust pipe of an internal combustion engine in or near a muffler. Such an NOx reduction catalyst comprises, for example, Pt/zeolite catalyst. An H.sub.2 generator is installed so as to supply the H.sub.2 to an inlet side of the NOx reduction catalyst. The H.sub.2 generator may include a reforming catalyst for reforming methanol, LPG, or natural gas to generate H.sub.2. The generated H.sub.2 flows to the NOx reduction catalyst where it reacts with NOx to purify the exhaust gas.

NOx decreasing apparatus for an internal combustion engine

A cooling system of an internal combustion engine has a plurality of cylinder coolant passages. Each of the passages is provided for one of a plurality of cylinders. The plurality of cylinder coolant passages has grooves provided on outer surfaces of cylinder liners of the plurality of cylinders. The system also includes a cylinder head coolant passage located so as to extend in a cylinder head and a coolant supply for supplying coolant to the cylinder head coolant passage. The cylinder head coolant passage has branch passages connected therewith, each of the branch passages being also connected with respective one of the plurality of cylinder coolant passages.

Cooling system of an internal combustion engine

A cooling system for an internal combustion engine able to realize a cooling effect matching a distribution of incoming heat of a cylinder liner. A plurality of annular grooves are formed on an outer surface of the cylinder liner, and a passage connecting the annular grooves is also provided. An introducing passage part is formed between an inlet passage of a coolant and the uppermost annular groove. A curved portion is provided to the introducing passage part. A flow direction of the coolant flowing into the introducing passage part is smoothly changed so as to flow along a direction of a passage connecting the annular grooves. An amount of coolant flowing into the annular grooves located lower than the uppermost annular groove is increased appropriately.

Cooling system for internal combustion engine

An exhaust gas purification system for an internal combustion engine includes an engine capable of fuel combustion at lean air-fuel ratios, a catalyst constructed of zeolite carrying at least one kind of metal selected from transition metals and noble metals to reduce NOx under oxidizing conditions and in the presence of HC, engine operating condition detecting means for detecting the current engine operating condition, engine operating range determining means for determining whether or not the current engine operating condition is within an insufficient HC amount range, and an HC amount control means for controlling the amount of HC included in the exhaust gas when the engine operating range determining means determines that the engine operating condition is within the insufficient HC amount range. The HC amount control means degrades automization or evaporation of fuel injected from a fuel injection valve to thereby generate unburned fuel and to increase the HC amount in the exhaust gas, so that the NOx purification rate of the catalyst is improved.

Exhaust gas purification system for an internal combustion engine

In an air-fuel ratio feedback control system including at least one air-fuel ratio sensor downstream of a catalyst converter provided in an exhaust gas passage, an actual air-fuel ratio is controlled in accordance with the output of the downstream-side air-fuel ratio sensor. When at least one of the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor is not satisfied the controlled air-fuel ratio is made an air-fuel ratio by an open loop control, while all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor are satisfied the controlled air-fuel ratio is made the stoichometric ratio (.lambda.=1) in accordance with the output of the downstream-side air-fuel ratio sensor. For a period after all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor are satisfied, the control by the output of the downstream-side air-fuel ratio sensor is prohibited, but, the controlled air-fuel ratio is made the stoichiometric ratio (.lambda.=1) by an open loop control or by the output of an upstream-side air-fuel ratio sensor.

Air-fuel ratio feedback control system including at least

Growing community of inventors

Susono, Japan

Kiyoshi Nakanishi