Hitachi, Ltd.

Other

Hitachi Car Engineering Co., Ltd.

Nissan Motor Company Limited

Hitachi Automotive Eng. Co., Ltd.

Hitachi-high-technologies Corporation

Hitachi Automotive Engineering Co., Ltd.

Babcock-hitachi K.k.

Masami Nagano

Takeshi Atago

Yuzo Kadomukai

Masahide Sakamoto

Shinji Nakagawa

Takanobu Ichihara

Mamoru Nemoto

Yoshio Okamoto

Tadashi Someno

Ayumu Miyajima

Hiroaki Saeki

Toshio Hori

Kiyoshi Amou

Minoru Ohsuga

Seiji Suda

Toshiharu Nogi

Tatsuya Yoshida

Toshio Manaka

Masahiro Toyohara

Takehiko Kowatari

Yozo Nakamura

Kozo Katogi

Junji Miyake

Kenichi Nakamura

Kimiji Karino

Masakichi Momono

Yuji Maeda

Hiroyuki Takamura

Kenji Watanabe

Toshimichi Minowa

Makoto Yamakado

Motoyuki Abe

Kenji Ikeura

Yoshihisa Kawamura

Seiji Asano

Kousaku Shimada

Minoru Oosuga

Shinsuke Nakazawa

Michio Morioka

Minoru Osuga

Toshiro Abe

Yoshiya Takano

Toru Ishikawa

Masakatsu Fujishita

Tadao Osawa

Masahiro Souma

Hisanori Moriya

Yuichi Mori

Ikuhisa Hamada

Yasuhiko Fujiwara

Junichi Noda

Shigeyuki Nonomura

Hiroshi Sekine

Tokihiko Sakuma

Akira Teragakiuchi

Atsunori Hashimoto

Shigenori Hosowari

Tunemitu Kuroha

Toshifumi Mukai

Hiroshi Yokota

Satosi Suzuki

Hiroshi Kusumoto

Hiroto Ishikawa

Yoshinori Murao

Kanji Tachibana

Yuiti Kanazawa

To provide an engine exhaust gas treatment system that can efficiently reduce and remove NOx using easy-to-handle urea as the reducing agent, regardless of the engine operating conditions. An exhaust gas denitration system in which an exhaust gas is introduced into the denitration catalyst reactorprovided in the exhaust gas flue, where NOx is reduced and removed in the presence of the denitrati on catalyst, wherein a diversion means provided in the exhaust gas flueintroduces part or all of the exhaust gas into a urea solution injection evaporator having a heating means by the heaterand the heat from the exhaust gas and the heat from the heater serve to generate ammonia that is then circled and mixed with the exhaust gas and introduced into the denitration catalyst reactor

Engine exhaust gas treatment system and exhaust gas treatment process

In order to estimate failure times of vehicles, the invention provides a vehicle failure diagnosis apparatus which receives records of learned values actually used in the past in vehicle control systems of vehicles as diagnosis targets from in-vehicle terminals via a communication part, estimates failure time of the vehicle control systems by comparing the received records of the learned values and the failure patterns readout from a failure pattern DB, and outputs the estimated failure time to the in-vehicle terminals.

Vehicle failure diagnosis apparatus and in-vehicle terminal for vehicle failure diagnosis

An internal combustion engine controller, is used with a fuel-based torque-on-demand control type, multi-cylinder, direct-injection internal combustion engine, to provide an air flow rate control that excels in response and convergence. The internal combustion engine controller includes a section for computing a target throttle opening from operating conditions, which in turn includes a first computing section for determining a target throttle opening by feedback control in accordance with operating conditions including an intake air flow rate; a second computing section for determining a target throttle opening by feed-forward control in accordance with operating conditions; and a third computing means for determining a target throttle opening based on the target throttle opening value determined by the first computing means and the second computing means.

Controller of internal combustion engine

An internal combustion engine control device for, in a lean-burn internal combustion engine provided with a three-way catalyst and a lean NOx catalyst in an exhaust system, optimizing an air/fuel ratio in a rich mode from the viewpoints of both better fuel economy and exhaust emission control when NOx having been stored in a lean NOx catalyst during a lean operation is desorbed and cleaned by switching to a rich operation. An internal combustion engine control device for controlling an air/fuel ratio during the rich operation to be changed between a period of desorbing Ostored in the three-way catalyst and a period of desorbing and cleaning NOx stored in the lean NOx catalyst.

Combination of selected opioids with other active substances for use in the therapy of urinary incontinence

The present invention provides a fuel injection device comprising an intake pipe having interior wall surfaces for providing air from an upstream side to a downstream side and a fuel injection port disposed in the intake pipe between the surfaces for providing fuel into the intake pipe and an air guide member disposed in the intake pipe in a plane substantially parallel to the surfaces for guiding air separately towards an air flow layer passage and a main air passage wherein the air guided towards the air flow layer passage has a speed at least greater than the air guided towards the main air passage.

Fuel injection device for internal combustion engine

The invention improves a combustion at a starting time by refining a fuel at a time of starting the engine so as to minimize an amount of the fuel attached to a wall surface and appropriately form an air-fuel mixture. When the engine starts, a control apparatus executes a control of increasing a fuel pressure supplied to a fuel injector in comparison with a normal operating time just after the engine start, and a divisional injection control of divisionally injecting the fuel injection for one cycle of the engine by the fuel injector at a plurality of times.

Control apparatus of fuel injection type internal combustion engine

A control apparatus is capable of separately detecting an unexpected fluctuation in the amount of NOx discharged from an engine (combustion chamber), separately from deterioration of lean NOx catalyst performance, thereby avoiding incorrect diagnosis of deterioration of the lean NOx catalyst, and ensuring the optimum control of the catalyst.

Engine control apparatus

To improve startability and reduce the amount of HC emission at start-up with the aid of a construction where vaporized fuel is supplied to the bypass passage that bypasses the main passage. The main air control valveis installed near the intake portof the main air passageand the main air control valve is closed or throttled at the time of start-up or additional injection from the port injection valveis given in the beginning of start-up cranking. With a apparatus equipped with the main air control valve, vaporization of the fuel injected from the auxiliary injection valveis facilitated in the beginning of cranking and also intake delay of the vaporized fuel is reduced, and hence startability can improve and the amount of HC emission at the time of start-up can decrease. With a apparatus where additional injection is given from the port injection valvein the beginning of cranking, fuel supply into the cylinder is achieved quickly, and hence startability can improve and the amount of HC emission at the time of start-up can decrease.

Starting apparatus, starting method, control method and exhaust filtration apparatus of internal combustion engine

In order to improve the decrease of the catalytic action and the deterioration of the exhaust purification performance, a catalyst installed in the exhaust pipe of an engine and a secondary air pump for supplying secondary air into the exhaust pipe are provided, and the secondary air pump is operated even after the engine has stopped.

Exhaust gas purifier

The present invention provides an electronically-controlled fuel injector, for an internal combustion engine, comprising a downstream fuel injection valve located near an air intake port of each cylinder or inside a cylinder, an air intake passage which bypasses the throttle valve located upstream of a downstream fuel injection valve, and a fuel vaporizing section including an upstream fuel injection valve, and a heater which vaporizes fuel injected from the upstream fuel injection valve; and further having an air intake port located upstream of the throttle valve, air flow control section for controlling an amount of air, said fuel vaporizing section, vaporized-fuel branch section for supplying vaporized fuel to each cylinder, and a vaporized-fuel distribution passage which extends from the vaporized-fuel branch section to an opening located in each air intake pipe located downstream of the throttle valve.

Fuel supply system for internal combustion engine

In an internal combustion engine, an amount of spray attaching onto an inner wall surface of an intake pipe is reduced by forming a two-directional spray of highly atomized fuel. The highly atomized two-directional spray can be obtained by a spray forming means constructed by piling a fuel in-plate forming fuel passages, a swirl plate forming fuel passages for adding swirl forces to the fuel, and an injection plate for determining injection directions of the fuel. Further, penetrations of the sprays injected toward two directions are made different from each other.

Fuel injection valve and fuel injection system

Atomization and vaporization of spray in a fuel supply system is promoted at the time of cold startup and the amount of fuel depositing on the inner wall of the intake manifold is reduced, thereby ensuring improved startability of an internal combustion engine of a car, reduced fuel costs and improved purification of exhaust gas. A very fine groove is formed on a heat transfer surface in a fuel vaporization promoting apparatus, wherein this groove is shaped in such a way that fuel is dispersed by the surface tension of the heat transfer surface and the fuel. This configuration ensures uniform dispersion of fuel on the heat transfer surface and effective promotion of vaporization.

Fuel vaporization promoting apparatus and fuel carburetion accelerator

A control method of an engine including at least an HC adsorbing catalyst for adsorbing HC at a low temperature, and emitting adsorbed HC at a high temperature, and a three-way purifying function on the same carrier, and an NO adsorbing catalyst having an NO adsorbing function for adsorbing or occluding NO in oxidizing atmosphere, and emitting NO in reducing atmosphere, and a three-way purifying function. The engine operated with stoichiometric value or a rich air-fuel when a temperature of the HC adsorbing catalyst and/or a temperature of the NO adsorbing catalyst is equal to/lower than a predetermined value. The engine is operated with a lean air-fuel ratio when a temperature of the HC adsorbing catalyst and/or a temperature of the NO adsorbing catalyst is equal to/higher than the predetermined value.

Method and apparatus for controlling an engine

A control unit for an internal combustion engine can activate a three-way catalyst at the early stage and can lessen the deterioration of the exhaust in an internal combustion engine such as HC, CO, and NOx, etc. from the exhaust gas when starting. The control unit for an internal combustion engine is provided with the three-way catalyst and HC adsorbent on an exhaust side. The control unit alternately controls the A/F between a rich state and a lean state in order to quicken the activation of the three-way catalyst when the internal combustion engine starts.

Control unit for internal combustion engine

Growing community of inventors

Hitachinaka, Japan

Masami Nagano