Daihatsu Motor Company, Ltd.

Imagineering, Inc.

Other

National University Coororation Nagaoka University of Technology

National University Corporation Nagaoka University of Technology

Takeshi Serizawa

Yoonho Kim

Hiroaki Oi

Yuji Ikeda

Akira Nakajima

Hirohisa Tanaka

Masatoshi Takeda

Tadachika Nakayama

Koichi Niihara

Noboru Yamada

Atsushi Nishiyama

Satoru Yamanaka

Juyoung Kim

Yoshiki Morinaga

Eiji Mishima

Yuta Shima

Toshihiro Imanishi

Kazunori Nishikawa

Katsumi Uchida

Kunio Hasegawa

Hiroya Nakata

Satoshi Ishizawa

Kyohei Ogawa

Masashi Shida

To alleviate or eliminate a problem of unburned fuel discharged to the outside of a cylinder in a case in which an air fuel mixture is insufficiently combusted in a combustion chamber. During the expansion stroke in which a high voltage is applied to an ignition plug via an ignition coil, and a spark discharge is caused to occur at the ignition plug, thereby the air fuel mixture in the combustion chamber is ignited and combusted, in a case in which deterioration of combustion state is detected, a microwave electric field is created in the combustion chamber prior to an opening timing of an exhaust valve at an end stage of the expansion stroke, thereby plasma is generated and enlarged in the combustion chamber.

Control device for spark ignition type internal combustion engine

A power-generating system includes a heat source which is able to produce temporal temperature variation, a first device in which polarization occurs based on the temperature change of the heat source, and a second device for taking out a net generating power from the first device, wherein 80% or higher of the total surface area of the first device is heated and/or cooled with the heat source.

Power generating system

An spark ignition type internal combustion engine allows the spark discharge by the ignition plug to react with the electric field created in the combustion chamber and generates the plasma, thereby igniting the fuel air mixture to reduce the emission of the unburned fuel and to improve fuel efficiency of the internal combustion engine in a spark ignition type internal combustion engine that allows an electric field created in a combustion chamber to react with a spark discharge by an ignition plug and generates plasma, thereby igniting fuel air mixture. The engine includes an electromagnetic wave emission device that emits an electromagnetic wave in the combustion chamber when the fuel air mixture is combusted, and a protruding member protruding from a partitioning surface that partitions the combustion chamber. At least a part of the protruding member is made of a conductor.

Spark ignition internal combustion engine

It is configured such that plasma generated at a time of ignition should diffuse over an entire combustion chamber in a spark ignition type internal combustion engine in order to improve fuel efficiency. An ignition device for a spark ignition type internal combustion engine is provided including an ignition plug and a transmission antenna provided in the vicinity of the ignition plug and adapted to transmit an electromagnetic wave to a combustion chamber. The ignition device allows a spark discharge generated between a central electrode and a ground electrode of the ignition plug to react with an electric field created via the transmission antenna in the combustion chamber so as to generate plasma and ignite fuel air mixture. A receiving antenna is arranged on a combustion chamber-facing surface of at least one of an intake valve and an exhaust valve, and is adapted to receive the electromagnetic wave transmitted from the transmission antenna.

Ignition device for spark-ignition internal combustion engine

An object of the present invention is to provide a barrier discharge device capable of increasing the combustion efficiency of an engine while overcoming the problems of the cumbersome replacement of the electrodes and the commercialization of the device. The barrier discharge device of an engine includes a dielectric body and at least two barrier discharge electrodes which are held inside the dielectric body and to which voltages for barrier discharge are applied, wherein each of the barrier discharge electrodes are not exposed to the inside of a cylinder bore and are arranged so as to surround the cylinder bore.

Barrier discharge device

A power-generating system includes a heat source having a temperature that goes up and down over time; a first device that undergoes electric polarization due to a temperature change of the heat source; and a second device that takes out an electric power from the first device.

Power-generating system

A plasma actuator () includes four electrodes () and three dielectrics () and is disposed on the side of an object surface (B). When a high voltage is applied to the electrodes (), a plasma () is generated at an end () of each dielectric () exposed so as to be accessible to a gas. In the plasma actuator (), the electrodes () and dielectrics () are alternately stacked one on another. The plasma actuator () includes a stepped exposed portion (X). The plasma actuator () in which the electrodes () and dielectrics () are arranged such that the ends () of the dielectrics () are exposed in the normal line direction of the object surface (B) in the stacked order in the stepped exposed portion (X) can suppress the flow of the generated plasma even when the plasma actuator is exposed to a high-speed airflow under high pressure. This stabilizes the plasma.

Plasma actuator

A multicylinder internal combustion engine is provided with a plurality of cylinders sharing a single crankshaft. The combustion characteristics in the respective cylinders is improved by taking out part of combustion (expansion) gas produced in one of the cylinders at an earlier stage of the explosion (expansion) stroke, and then introducing the gas into another one of the cylinders in the suction or compression stroke.

Multiple cylinder internal combustion engine

Growing community of inventors

Ikeda, Japan

Takeshi Serizawa