Hitachi, Ltd.

Mitsubishi Petrochemical Company Limited

Babcock-hitachi Kabushiki Kaisha

Babcock-hitachi K.k.

Hitachi Automotive Engineering Co., Ltd.

Denso Corporation

Hitachi, Ltd. and Babcock-hitachi Kabushiki Kaisha

Shigeo Uno

Akira Kato

Fumito Nakajima

Shinpei Matsuda

Shimpei Matsuda

Hisao Yamashita

Makoto Imanari

Masato Takeuchi

Jinichi Imahashi

Yoshihisa Watanabe

Toshikatsu Mori

Youichi Sakuta

Hiroshi Kuroiwa

Masahiko Ibamoto

Kazuhiko Sato

Tomoichi Kamo

Mamoru Mizumoto

Mitsuhiro Masuda

Mitsuyoshi Okada

Susumu Sato

Hitoshi Ishikawa

Hideki Kabune

Nobuhiko Makino

Seizi Takeuchi

Hideo Okada

Kazunori Fujita

Hiroshi Kawagoshi

Tatsuya Aizawa

Tomoharu Hayakawa

Masamitsu Ozeki

Masato Tekeuchi

Otane Hitomi

Hiroshi Kagabu

An AD converter includes an input circuit, an operation circuit and a bus interface. The input circuit is provided with a pull-down circuit, which is capable of pulling down an analog signal input side of a sample-hold circuit whether an analog signal is inputted or not. The operation circuit is provided with a reference voltage conversion result storing register, which is capable of storing a conversion result of an analog reference voltage inputted periodically separately from a conversion result of the analog signal inputted through the sample-hold circuit. The operation circuit is further provided with a check register, which is capable of writing in and reading out data for checking operation of a signal transfer system including a bus interface through the bus interface. Thus, it is made possible to confirm normality of an external part and an internal part of the AD converter.

AD converter and data processing unit

The invention provides a torque feedback shift control device for an engine control system including an engine, an engine torque controller, an automatic transmission for changing output speed of the engine, and a transmission controller for controlling gear shifting in the transmission. A target torque generator is provided for generating a signal indicative of a target torque pattern in shifting of the automatic transmission according to a shifting signal from the transmission controller. A drive shaft torque detector detects an output torque of the automatic transmission, and the engine controller performs feedback control of the engine torque so that the output torque detected by the drive shaft torque detector in downshifting of the automatic transmission follows up the target torque pattern.

Torque feedback shift control device and method

The disclosure is concerned with a high temperature stable catalyst comprising an alumina base support and a catalytically active component supported on the support. The support is featured by its specific composite oxide having a specific surface area of at least 10 m.sup.2 /g and a structural form of amorphous state or a phase resemble to lanthanoide .beta.-alumina. The composite oxide can be converted to lanthanoide .beta.-alumina when heated to an elevated temperature above 1000.degree. C. within 2 hours. The composite oxide is substantially free from such ingredients as accelerate grain growth of alumina. The ingredients are for example Cr, Sr or Ce. The present dislcosure is also concerned with a process for preparing the catalyst and a process for conducting chemical reactions such as steam reforming, desulfurization of heavy oil, cracking of hydrocarbons, etc. using the catalyst.

High temperature stable catalyst, process for preparing same, and

The disclosure is concerned with a high temperature stable catalyst comprising an alumina base support and a catalytically active component supported on the support. The support is featured by its specific composite oxide having a specific surface area of at least 10 m.sup.2 /g and a structural form of amorphous state or a phase resemble to lanthanoide .beta.-alumina. The composite oxide can be converted to lanthanoide .beta.-alumina when heated to an elevated temperature above 1000.degree. C. within 2 hours. The composite oxide is substantially free from such ingredients as accelerate grain growth of alumina. The ingredients are for example Cr, Sr or Ce. The present disclosure is also concerned with a process for preparing the catalyst and a process for conducting chemical reactions such as steam reforming, desulfurization of heavy oil, cracking of hydrocarbons, etc. using the catalyst.

High temperature stable catalyst and process for preparing same

A catalyst comprising precious metal particles supported on a carrier obtained from (a) titania as a first component and (b) as a second component at least one metal oxide selected from oxides of magnesium, strontium, lanthanum, yttrium, cerium, zirconium, silicon and tin, is effective for catalytic combustion of a fuel at a temperature of 400.degree. to 1500.degree. C. with excellent durability.

Catalyst for catalytic combustion

The concentrations of NO and NO.sub.2 in nitrogen oxides contained in an exhaust gas are adjusted to substantially equal mol concentrations, whereupon the exhaust gas is held in contact with a metallic oxide catalyst together with ammonia. Owing to the adjustment of the NO and NO.sub.2 concentrations in the nitrogen oxides, the reaction rate is enhanced, and the nitrogen oxides are reduced even at a low temperature. The adjustment of the concentrations of NO and NO.sub.2 in the nitrogen oxides is done by the oxidation of NO with ozone, the catalytic oxidation of NO with air or oxygen, the addition of nitric acid, the addition of NO or NO.sub.2, etc.

Process for reducing an eliminating nitrogen oxides in an exhaust gas

An inorganic particulate adsorbent of a titania-alumina system for treating a superheated water containing radioactive materials such as cobalt ions, which is free from release of corrosive impruities, and which has a high adsorption capacity of radioactive materials and a high mechanical strength is prepared by hydrolyzing a titanium alkoxide and an aluminum alkoxide, thereby forming a hydrous titanium oxide and a hydrous aluminum oxide, respectively; precalcining the hydrous titanium oxide and aluminum oxide, mixing and molding the resulting titania and alumina into a particulate mixture thereof having a titania mole fraction of 0.2-0.9, and calcining the particulate mixture at 500.degree.-700.degree. C. This absorbent is effectively used in treating boiling water-type nuclear reactor core-circulating water to remove radioactive substances therefrom.

Process for preparing inorganic particulate adsorbent and process for

The present invention relates to a method for sintering oxidized titanium powder and an active metallic component containing oxidized molybdenum as a binder for oxidized titanium granules. The active metallic component comprises one or more than one selected from a group consisting of V.sub.2 O.sub.3, Fe.sub.2 O.sub.3, WO.sub.3, Co.sub.2 O.sub.3, NiO, Cr.sub.2 O.sub.3, CeO.sub.2, SnO.sub.2, CuO, MoO.sub.3, Pt, Pd, Rh, Ru, Ir and Re. The method comprising the steps of:

Sintered cataltyic or absorbent metallic product and method for

A waste gas containing sulfur oxides is contacted with an adsorbent comprising an intimate mixture of an iron oxide and/or a copper oxide and a titanium oxide at a temperature of 250.degree.-500.degree. C. The sulfur oxides thus adsorbed are desorbed with a reducing gas and recovered as sulfur material. The efficiency of the adsorbent is not reduced even after many repetitions of the adsorption-desorption cycle. Since the adsorbent exhibits a high resistance to sulfuric acid mist (SO.sub.3) contained in the waste gas.

Process for treating a waste gas containing sulfur oxides

Ammonia is added to combustion flue gas containing nitrogen and sulfur oxides and the gas is brought into contact with a catalyst which contains titanium or tin oxide, or a mixture of the two, as a main component at a temperature between 150 .about. 330.degree. C. Nitrogen oxides are reduced to nitrogen and water, and sulfur oxides are deposited as ammonium sulfates, on the surface of the catalyst which causes a decrease in the ability of the catalyst. A part of the catalyst is removed continuously or intermittently from a catalyst bed and fed to a regeneration tower where it is treated with a hot gas having a temperature of 350 .about. 600.degree. C. The ammonium sulfates deposited on the catalyst are decomposed into SO.sub.3 and NH.sub.3. The SO.sub.3 is adsorbed by an SO.sub.3 absorbent and the NH.sub.3 is returned to the combustion flue gas to be treated.

Process for removing nitrogen oxides from combustion flue gas

A process for treating an exhaust gas containing nitrogen oxides, oxygen and ammonia gas with a catalyst consisting essentially of titanium oxide, copper oxide in an amount of 0.02 to 0.3 mole and molybdenum oxide or tungsten oxide in an amount of 0.01 to 0.5 mole per one mole of the titanium oxide. Because the catalyst exhibits good properties for decomposition of ammonia as well as for decomposition of nitrogen oxides it is possible to avoid secondary pollution due to unreacted ammonia.

Process for catalytically treating exhaust gas containing NO.sub.x in

Nitrogen oxides are removed from flue gas evolving from stationary sources and containing the nitrogen oxides through reduction of nitrogen oxides to nitrogen by passing the flue gas over a catalyst of metal compounds containing oxysulfur compounds in the presence of an ammonia gas.

Process for removing nitrogen oxides using ammonia as a reductant and

A catalyst compositions for reducing nitrogen oxide comprising, as its chief ingredient, an intimate mixture of

Catalytic process for reducing nitrogen oxides to nitrogen

A process for treating an exhaust gas containing substantially only ammonia gas and oxygen gas as reactants to decompose catalytically the ammonia gas to nitrogen and water, which comprises contacting at an elevated temperature the exhaust gas with a catalyst consisting essentially of the oxides of titanium, copper and a member selected from the group consisting of molybdenum, tungsten, vanadium, cerium, iron and mixtures thereof. The ammonia gas is catalytically decomposed in accord with the following chemical reaction:

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Shigeo Uno