Patents by Inventor Moriyoshi Awasaka
Moriyoshi Awasaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130247861Abstract: A valve that constitutes part of an exhaust gas recirculation valve is connected to a shaft, such that the valve is rotatable together with the shaft in the interior of a main body. An outer peripheral surface of the valve is formed in a substantial spherical shape, the axis (center of curvature) of the valve and the axis of the shaft being arranged eccentrically by a predetermined distance along a flow direction of the exhaust gas. In addition, a percentage between the eccentric distance between the center of curvature of the valve and the axis of the shaft, and the diameter of a gas inlet port of the main body into which the exhaust gas flows is 5.5% or greater.Type: ApplicationFiled: February 14, 2013Publication date: September 26, 2013Applicant: KEIHIN CORPORATIONInventors: Moriyoshi Awasaka, Ryuji Numabe, Ken Nakano, Yuya Yamazaki
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Patent number: 8434736Abstract: A fluid passage valve is equipped with a valve body which is disposed rotatably through first and second shafts, a movable seat having a communication hole therein, and an elastic member that urges the movable seat toward a side opposite from the valve body. The first and second shafts are assembled and installed on the valve body such that an axis thereof is disposed at a position offset from a center of curvature of a spherical surface portion of the valve body. The fluid passage valve is placed in a valve-closed condition by the spherical surface portion abutting against a seating surface and closing the communication hole, and is placed in an open condition by the valve body separating away from the movable seat and thereby opening the communication hole.Type: GrantFiled: September 22, 2011Date of Patent: May 7, 2013Assignee: Keihin CorporationInventors: Takenori Sumiya, Moriyoshi Awasaka, Yuya Yamazaki, Hirotaka Otaki
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Publication number: 20120074344Abstract: A fluid passage valve is equipped with a valve body which is disposed rotatably through first and second shafts, a movable seat having a communication hole therein, and an elastic member that urges the movable seat toward a side opposite from the valve body. The first and second shafts are assembled and installed on the valve body such that an axis thereof is disposed at a position offset from a center of curvature of a spherical surface portion of the valve body. The fluid passage valve is placed in a valve-closed condition by the spherical surface portion abutting against a seating surface and closing the communication hole, and is placed in an open condition by the valve body separating away from the movable seat and thereby opening the communication hole.Type: ApplicationFiled: September 22, 2011Publication date: March 29, 2012Applicant: KEIHIN CORPORATIONInventors: Takenori SUMIYA, Moriyoshi AWASAKA, Yuya YAMAZAKI, Hirotaka OTAKI
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Patent number: 7082898Abstract: The present invention aims at expanding an operation range for allowing a compression ignition combustion operation. The present invention provides an internal combustion engine of a compression ignition type that is capable of operating with a compression ignition combustion scheme in a given operation range. The ECU of the internal combustion engine detects an operating condition of the internal combustion engine and determines, according to the detected operating condition, which mode is to be used operate the internal combustion engine, a 4-cycle compression ignition mode or a 2-cycle compression ignition mode. The ECU controls the internal compression engine to perform the compression ignition mode determined.Type: GrantFiled: April 6, 2004Date of Patent: August 1, 2006Assignee: Honda Motor Co. Ltd.Inventors: Tohru Kitamura, Tomio Kimura, Shohei Okazaki, Akira Kato, Toshihiro Yamaki, Katsura Okubo, Moriyoshi Awasaka, Junji Yasuda, Yasuhiro Urata, Takashi Kakinuma, Yoshimasa Kaneko
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Publication number: 20040237910Abstract: The present invention aims at expanding an operation range for allowing a compression ignition combustion operation. The present invention provides an internal combustion engine of a compression ignition type that is capable of operating with a compression ignition combustion scheme in a given operation range. The ECU of the internal combustion engine detects an operating condition of the internal combustion engine and determines, according to the detected operating condition, which mode is to be used operate the internal combustion engine, a 4-cycle compression ignition mode or a 2-cycle compression ignition mode. The ECU controls the internal compression engine to perform the compression ignition mode determined.Type: ApplicationFiled: April 6, 2004Publication date: December 2, 2004Inventors: Tohru Kitamura, Tomio Kimura, Shohei Okazaki, Akira Kato, Toshihiro Yamaki, Katsura Okubo, Moriyoshi Awasaka, Junji Yasuda, Yasuhiro Urata, Takashi Kakinuma, Yoshimasa Kaneko
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Patent number: 6817349Abstract: A control system for a compression ignition internal combustion engine is provided which is capable of expanding a region for executing compression ignition, on the low-load side, while positively obtaining a required power output from the engine. The amount of residual combustion gas is determined depending on operating conditions of the engine, and based on the determined amount of residual combustion gas, part of combustion gas is retained in each combustion chamber after combustion. It is judged whether or not supercharging of fresh air should be executed for self-ignition, based on the operating conditions of the engine, and when it is judged that the supercharging should be executed, supercharging of fresh air flowing to the combustion chamber is executed.Type: GrantFiled: July 8, 2003Date of Patent: November 16, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Moriyoshi Awasaka, Takashi Kakinuma, Junji Yasuda, Yasuhiro Urata
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Publication number: 20040118390Abstract: A control system for a compression ignition internal combustion engine is provided which is capable of expanding a region for executing compression ignition, on the low-load side, while positively obtaining a required power output from the engine. The amount of residual combustion gas is determined depending on operating conditions of the engine, and based on the determined amount of residual combustion gas, part of combustion gas is retained in each combustion chamber after combustion. It is judged whether or not supercharging of fresh air should be executed for self-ignition, based on the operating conditions of the engine, and when it is judged that the supercharging should be executed, supercharging of fresh air flowing to the combustion chamber is executed.Type: ApplicationFiled: July 8, 2003Publication date: June 24, 2004Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Moriyoshi Awasaka, Takashi Kakinuma, Junji Yasuda, Yasuhiro Urata
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Patent number: 6237562Abstract: There is provided a method of controlling a compression ignition internal combustion engine which allows switching of combustion of an air-fuel mixture between compression ignition combustion for burning said air-fuel mixture by compression ignition and spark ignition combustion for burning said air-fuel mixture by spark ignition, in dependence on an operating condition of said engine. Ignition timing of said spark ignition is progressively retarded when the switching of said combustion is carried out from said spark ignition combustion to said compression ignition combustion, to thereby control the switching of said combustion to said compression ignition combustion.Type: GrantFiled: January 13, 2000Date of Patent: May 29, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Moriyoshi Awasaka, Takashi Sasaki, Kazuhiro Ueda
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Patent number: 5655362Abstract: Selectively operable first and second exhaust valves are provided for every combustion chamber in an engine. Branch pipes of a first intake manifold are connected to first exhaust ports opened and closed by the first exhaust valves, and branch pipes of a second exhaust manifold are connected to second exhaust ports opened and closed by the second exhaust valves. An adsorbing trap is provided in an aggregated pipe of the first exhaust manifold and a catalytic converter is provided in a common exhaust pipe connected to the aggregated pipes of the first and second exhaust manifolds. Only the first exhaust valves are operated to open and close at a low temperature of the adsorbing trap to permit the exhaust gas to flow into the first exhaust manifold. Thus, hydrocarbons (HCs) in the exhaust gas are adsorbed into the adsorbing trap at the low temperature and the heat of the exhaust gas is effectively utilized to promote the activation of the catalytic converter.Type: GrantFiled: September 23, 1994Date of Patent: August 12, 1997Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shogo Kawajiri, Takuya Sugino, Takahiro Naka, Moriyoshi Awasaka, Kenji Fujiki
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Patent number: 5402642Abstract: An exhaust emission control device for an internal combustion engine is provided with a main catalyst activated with heat of exhaust gas, a self-exothermic type auxiliary catalyst activated with electric current energy and a silencer, which are connected in series and in sequence from an upstream side to a downstream side in an exhaust system leading from an engine body. Thus, noxious components included in the exhaust gas can be converted and the gas is purified by using the main and auxiliary catalysts in combination but with the auxiliary catalyst being subject to less heat from the exhaust gas than the main catalyst.Type: GrantFiled: August 26, 1993Date of Patent: April 4, 1995Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Moriyoshi Awasaka, Noriyuki Abe, Akira Nagao, Toshiyuki Nishida
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Patent number: 5304100Abstract: An automatic tensioner apparatus comprising an idler pulley engaging a transmission belt of a wrapping connector type transmission mechanism, an arm for swingably supporting the idler pulley with respect to a predetermined supporting surface, and a resilient member for exhibiting a resilient force for swinging the arm and the idler pulley in a direction to engage the transmission belt in order to apply a predetermined tension to the transmission belt. A casing for accommodating the resilient member is secured to the supporting surface and an arm pivot-supporting portion for swingably supporting a base portion of the arm is integrally provided on the casing in such a manner that the arm pivot-supporting portion is offset relative to the resilient member in a direction along the supporting surface and relative to the resilient member in a direction away from the supporting surface.Type: GrantFiled: April 22, 1992Date of Patent: April 19, 1994Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Moriyoshi Awasaka, Yoshio Kadoshima
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Patent number: 4614090Abstract: An outdoor unit of an air conditioner of an engine heat pump type comprises an engine; first and second compressors driven by the engine and having substantially same capacity and heat exchangers for the compressors, said heat exchanger for the first compressor being adapted to utilize an atmosphere as a heat source in a heating operation, said heat exchanger for the second compressor being adapted to utilize a waste heat of the engine as a heat source in the heating operation, a rotation speed of the second compressor being set smaller than that of the first compressor in the heating operation, only the second compressor is adapted to operate in a defrosting operation for the heating operation while utilizing the waste heat of the engine as the heat source, said compressors being adapted to operate in a cooling operation and a rotation speed of the engine and a number of the compressors to be operated being controlled so as to control a cooling capacity in the cooling operation.Type: GrantFiled: January 27, 1986Date of Patent: September 30, 1986Assignee: Yanmar Diesel Engine Co. Ltd.Inventors: Teruji Kaneko, Toshihiko Kawabe, Moriyoshi Awasaka