Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Koyo Seiko Kabushiki Kaisha

Toyokazu Baika

Norihiko Nakamura

Kingo Horii

Katsuhiko Hirose

Hiroshi Noguchi

Toshio Tanahashi

Tatsuo Kobayashi

Shizuo Abe

Fumiaki Hattori

Toshio Ito

Takashi Hashima

Nobuyuki Muramatsu

Mutsumi Kanda

Hiroyuki Hokuto

Toshimi Kashiwagura

Hiroya Tanaka

Yoshiaki Shibata

Souichi Matusita

Yasushi Sato

Koichi Nakae

Hidemi Oonaka

Michiaki Ujihashi

Toshiaki Asada

Hideo Nagaosa

Kenichi Nomura

Takeshi Sato

Akihiro Yamanaka

Toshio Miki

Toshio Itoh

Yasuhito Tsutsumi

Tadashi Fukuyama

Michiaki Uzihashi

Kiyoshi Nakanishi

Shigeki Miyashita

Takeshi Okumura

Takashi Tsunooka

Nobuo Watanabe

Masanobu Kanamaru

Souichi Matsushita

Nobuyuki Kitamura

Masahiko Masubuchi

Takao Tate

Tatehito Ueda

Masami Konishi

Kichiro Kato

Hidemi Onaka

Kazuhiro Iwahashi

Michio Kawagoe

Hiroaki Nihei

Kazuhiro Ito

Shuji Morita

Noboru Toyama

Yoshio Kido

Tomojiro Akiyama

Kazuhiko Itou

Koukichi Fujimori

Hirosi Noguchi

Daisuke Yamazaki

Michio Kawagoe, Deceased

Kenichiroh Shindoh

Matsumi Kanda

Toshimi Kawashiwagura

Minoru Kohigashi

Kouichi Nakae

Tosio Tanahasi

A fuel cell system includes: a fuel cell stack; a coolant circulation path through which coolant for cooling the fuel cell stack flows; a cathode gas supply flow path that is connected to an inlet of the fuel cell stack, and in which a compressor that supplies cathode gas to the fuel cell stack is arranged; an intercooler that is arranged between an outlet of the compressor and the inlet of the fuel cell stack in the cathode gas supply flow path, is connected to the coolant circulation path, and cools cathode gas discharged from the compressor with use of the coolant; and a regulating valve that is arranged in the cathode gas supply flow path, and regulates a pressure between the outlet of the compressor and the inlet of the fuel cell stack when the fuel cell stack is being started at low temperature.

Fuel cell system and fuel cell system control method

A fuel cell system having an adsorber placed in an air supply path to an air electrode of a fuel cell and receiving a chemical filter for adsorbing impurities contained in air; measurement means for measuring the amount per unit time of air having passed the adsorber; detection means for detecting the density of impurities contained in the air, whose volume has been measured by the measurement means, before it enters the adsorber; estimation means for estimating, based on the amount of the air, the density of the impurities, and adsorption efficiency of the chemical filter, the amount of the impurities adsorbed per unit time by the chemical filter; and output control means for causing a signal to output when an accumulated value of the amount of the impurity exceeds a predetermined level.

Fuel cell system

Fuel cell system comprising impurity adsorbing means for adsorption of impurities contained in oxidation gas fed to fuel cell; impurity emitting means for emission of impurities adsorbed by the impurity adsorbing means from the impurity adsorbing means; impurity outlet passage for pass of impurities emitted from the impurity emitting means; and diluting means for dilution of the impurities emitted by the impurity emitting means, so that any adsorbed impurities are diluted by the diluting means before emission outside the system. Consequently, not only can impurities contained in the oxidation gas fed to fuel cell be effectively removed but also before emission of the removed impurities, there can be conducted lowering of influence on human health and environment.

A fuel cell system () includes an intake pipe () that admits an introduction of oxidizing gas upstream of an oxidizing gas supply source that supplies the oxidizing gas to a fuel cell (), and an exhaust pipe () that discharges exhaust gas which contains a vapor generated at an oxygen electrode side through an operation of the fuel cell (). The fuel cell system () is provided with a circulating pipe () that connects the intake pipe and the exhaust pipe (), a circulating valve () that is provided in the circulating pipe and operated to adjust a flow rate of the exhaust gas supplied from the exhaust pipe () to the intake pipe, and a pressure generating member that is provided in the exhaust pipe () at a position at which the circulating pipe and the exhaust pipe () are joined and generates a pressure that is higher than at least an atmospheric pressure.

A direct cylinder injection-type spark ignition internal combustion engine is disclosed. The engine comprises a spark plug, a cavity formed in the top surface of a piston, and a fuel injection valve for injecting fuel into the cavity in nearly the shape of a fan having a relatively small thickness. When the fuel injected in nearly the shape of a fan from the fuel injection valve is considered by being divided into a plurality of fuel segments in a radial direction, a side wall of the cavity has a first fuel deflection passageand a second fuel deflection passagefor so deflecting at least two of the plurality of fuel segments as to pass near the spark plug. The side wall of the cavity is at least partly provided with a return portionthat protrudes toward the inside of the cavity. The first fuel deflection passage is not provided with the return portionor is provided with the return portion having a short protrusion, and the second fuel deflection passage is provided with the return portionhaving a long protrusion.

Direct cylinder injection-type spark ignition internal combustion engine

A direct cylinder injection-type spark ignition internal combustion engine is disclosed. The engine comprises a spark plug, a cavity formed in the top surface of a piston, and a fuel injection valve for injecting fuel into the cavity in nearly the shape of a fan having a relatively small thickness. When the fuel injected in nearly the shape of a fan from the fuel injection valve is considered by being divided into a plurality of fuel segments in a radial direction, a side wall of the cavity has a first fuel deflection passage and a second fuel deflection passage for so deflecting at least two of the plurality of fuel segments as to pass near the spark plug. The side wall of the cavity is at least partly provided with a return portion that protrudes toward the inside of the cavity. The first fuel deflection passage is not provided with the return portion or is provided with the return portion having a short protrusion, and the second fuel deflection passage is provided with the return portion having a long protrusion.

An in-cylinder-injection internal combustion engine of spark ignition type has a plurality of cylinders, a fuel accumulator for storing a pressurized fuel; a fuel injector system that injects the pressurized fuel into each of the cylinders; a spark ignition system that ignites the fuel injected into each of the cylinders; and is controlled such that the engine is started by a partial operation of a selected at least one of the cylinders with a fuel injected into the selected at least one of the cylinders in at least its intake stroke. Then, a full operation of all of the cylinders with the fuel injected into all of the cylinders is started. The full operation is initiated not before a pressure of the fuel in the fuel accumulator has been raised to a level high enough to permit injection of the fuel into each of the cylinders in its compression stroke, as a result of the partial operation of the selected at least one of the cylinders. In addition, the engine is controlled such that an initial portion of the full operation includes a first mode of combustion in the selected at least one of the cylinders with the fuel injected thereinto in at least its intake stroke, the first mode of combustion being followed by stratified charge combustion in the selected at least one of the cylinders with the fuel injected thereinto in only its compression stroke.

In-cylinder-injection internal combustion engine and method of controlling in-cylinder-injection internal combustion engine

A direct-fuel-injection-type spark-ignition internal combustion engine is disclosed. The engine comprises a spark plug, a cavity formed on the top surface of the piston, and a fuel injection valve for injecting fuel into the cavity in nearly the shape of a fan having a relative small thickness. In the engine, the side wall of the cavity facing the fuel injection valve, for leading the fuel to the vicinity of the spark plug, has a horizontal sectional shape consisting of a part of an ellipse shape of which two foci are at a position of the injection hole of the fuel injection valve and a position near to the spark plug in plan view, and the side wall has a deflecting portion to deflect the fuel toward the inside of the cavity.

Direct-fuel-injection-type spark-ignition internal combustion engine

In a direct fuel injection-type spark ignition internal combustion engine including a spark plug and a fuel injector for injecting fuel directly into the cylinder, the engine can carry out stratified charge combustion by the fuel injection in the compression stroke and uniform charge combustion by the fuel injection in the intake stroke. The engine includes a mechanism which can make a tumbling stream formed in the cylinder in the intake stroke in the stratified charge combustion weaker than that in the uniform charge combustion.

Direct fuel injection-type spark ignition internal combustion engine

A control device of an engine having cylinders which are divided into two cylinder groups. The first cylinder group is provided with a first throttle valve and a first recirculation valve. The second cylinder group is provided with a second throttle valve and a second recirculation valve. When shifting from full cylinder operation to partial cylinder operation where the second cylinder group is left idle, the sum of the load of both the cylinder groups is maintained as substantially the same load as the total load before shifting to the partial cylinder operation, the first throttle valve is gradually opened, and the second throttle valve is gradually closed.

Control device of a varable cylinder engine

A control device for a variable displacement engine, coupled with an automatic transmission, for an automobile, wherein the control device controls cylinders depending on the driving condition. The control device changes working cylinders without changing the number of working cylinders during the shift operation of the automatic transmission by detecting that the automatic transmission is going to shift. When the control device changes working cylinders without changing the number of working cylinders, the control device controls cylinders so that cylinders which are non-working before the changing work after the changing, and controls cylinders so that a non-working cylinder is not followed by another non-working cylinder in the firing order of the case of all cylinders are working. When intake air is introduced into non-working cylinders and catalytic converters are required, the catalytic converters are so arranged that gases exhausted from non-working cylinders are introduced into catalytic converters which are different from catalytic converters into which gases exhausted from working cylinders are introduced through all conditions with some of cylinders working, and the quantity of intake air introduced into each working cylinder when some of cylinders work is greater than the quantity of intake air introduced into each cylinder when all cylinders work. The control device also controls the throttle valve such that the smaller the number of working cylinders, the greater the throttle valve opening relative to the depression of the accelerator pedal.

Control device for variable displacement engine

A two-stroke engine comprising two exhaust valves and two intake valves. These exhaust valves and these intake valves are arranged on the peripheral portion of the inner wall of the cylinder head, and one additional exhaust valve is arranged on the central portion of the inner wall of the cylinder head. The valve openings of the two intake valves, which are located on the exhaust valves side, are masked by the masking walls.

Two-stroke engine

A two-stroke engine comprising three exhaust valves and two intake valves. These exhaust valves and these intake valves are arranged on the peripheral portion of the inner wall of the cylinder head, and one additional intake valve is arranged on the central portion of the inner wall of the cylinder head. The valve openings of the three intake valves, which are located on the exhaust valves side, are masked by the masking walls. The central portion of the combustion chamber is scavenged by the fresh air fed from the additional intake valve, and the peripheral portion of the combustion chamber is scavenged by the fresh air fed from the remaining two intake valves.

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Susono, Japan

Toyokazu Baika