Patents by Inventor Koji Nishimoto

Koji Nishimoto 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).

  • Patent number: 6725149
    Abstract: There are provided, various sensors for detecting the operating state of the internal combustion engine; a rotational speed sensor, an air flow sensor, a throttle sensor, an intake air pressure sensor of an internal combustion engine; a storage where the charging efficiency corresponding to the rotational speed and throttle travel in the standard atmospheric condition is previously stored and set as a two-dimensional map, for outputting the stored and set value corresponding to the rotational speed and the throttle travel; and a CPU correcting the atmospheric pressure relational value including the atmospheric pressure calculated based on information of the intake air amount, rotational speed, charging efficiency, and throttle travel of the internal combustion engine by using the atmospheric pressure relational value including the atmospheric pressure calculated based on information of the rotational speed, throttle travel, and intake tube pressure of the internal combustion engine.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: April 20, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shuichi Wada, Koji Nishimoto, Norio Matsumoto
  • Patent number: 6675788
    Abstract: An air-fuel ratio control apparatus for an internal combustion engine in which an air-fuel ratio is always controlled to be a target value with accuracy when purge air is introduced is obtained.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: January 13, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hitoshi Inoue, Koji Nishimoto
  • Patent number: 6647958
    Abstract: A throttle control apparatus for an internal combustion engine capable of controlling an opening degree of an electronic control type throttle with high accuracy by employing an inexpensive A/D converter. The apparatus includes a throttle opening degree detector, and a controller for controlling the opening degree to a target value in dependence on operation state of the engine. The throttle opening degree detector includes a throttle opening degree sensor, an offset unit for transforming the sensor voltage into a plurality of offset-weighted voltages (V1, . . . , V4), an A/D converter and an adder for adding the converted offset-weighted voltages (V1 to V4) wherein a sum value resulting from addition of the offset-weighted voltages (V1, . . . , V4) is detected as the opening degree of the throttle to be controlled.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: November 18, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Nobuaki Yokoyama, Koji Nishimoto, Shinji Watanabe
  • Publication number: 20030101797
    Abstract: A misfire detecting device for an internal combustion engine including an ion current detecting means for detecting ion currents generated between electrodes of spark plugs; an ion current judging means for judging whether or not the ion current exists at each ignition cycle based on the ion current signal; a misfire judging means judging when no ion current is judged to exist based on an ion current judgment signal; an ignition coil; an ignition coil signal judging means for judging whether or not the ignition coil signal generated in synchronism with an ignition timing exists; and a failure judging means for judging whether or not an failure of the ion current detecting means occurs based on a result from the ignition coil signal judging means when the ion current signal is not detected.
    Type: Application
    Filed: April 3, 2002
    Publication date: June 5, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Koji Nishimoto, Takanori Fujimoto
  • Publication number: 20030100989
    Abstract: There are provided, various sensors for detecting the operating state of the internal combustion engine; a rotational speed sensor, an air flow sensor, a throttle sensor, an intake air pressure sensor of an internal combustion engine; a storage where the charging efficiency corresponding to the rotational speed and throttle travel in the standard atmospheric condition is previously stored and set as a two-dimensional map, for outputting the stored and set value corresponding to the rotational speed and the throttle travel; and a CPU correcting the atmospheric pressure relational value including the atmospheric pressure calculated based on information of the intake air amount, rotational speed, charging efficiency, and throttle travel of the internal combustion engine by using the atmospheric pressure relational value including the atmospheric pressure calculated based on information of the rotational speed, throttle travel, and intake tube pressure of the internal combustion engine.
    Type: Application
    Filed: May 2, 2002
    Publication date: May 29, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Shuichi Wada, Koji Nishimoto, Norio Matsumoto
  • Publication number: 20030094160
    Abstract: A starting fuel injection control device for an internal combustion engine including a unit for estimating the starting ability of the internal combustion engine, a crank angle detecting unit for outputting a crank angle signal in synchronization with a specific crank angle position of each cylinder of the internal combustion engine and a cylinder discriminating unit for discriminating a reference crank angle of a specific cylinder. The device also includes a unit for simultaneously injecting fuel to all the cylinders before the completion of the cylinder discrimination at the starting time and a unit for starting the independent injection by turns separately for each cylinder in synchronization with the crank angle signal from the time just after the completion of the cylinder discrimination, and a unit for starting simultaneously injects fuel to another cylinder where intake is possible.
    Type: Application
    Filed: April 30, 2002
    Publication date: May 22, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Hideaki Tani, Hitoshi Inoue, Koji Nishimoto
  • Publication number: 20030080745
    Abstract: When operating area detecting means detects an operating area that has a predetermined rotation number of below, flame-cut determination selecting means determines the flame-cut on the basis of the logical product between a detection result of first flame-cut detecting means and a detection result of second flame-cut detecting means.
    Type: Application
    Filed: April 12, 2002
    Publication date: May 1, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Ryoichi Hanazaki, Koji Nishimoto
  • Publication number: 20030015173
    Abstract: A throttle control apparatus for an internal combustion engine capable of controlling an opening degree of an electronic control type throttle with high accuracy by employing an inexpensive A/D converter. The apparatus includes a throttle opening degree detecting means for detecting opening degree of the electronic control type throttle (1, 2) for controlling operation of the engine, and a means (11) for controlling the opening degree to a target value in dependence on operation state of the engine. The throttle opening degree detecting means includes a throttle opening degree sensor (3) for generating a sensor voltage corresponding to the opening degree of the electronic control type throttle, an offset means (101, . . . , 104) for transforming the sensor voltage into a plurality of offset-weighted voltages (V1, . . . , V4), an A/D converter (12) for performing A/D conversion of the plurality of offset-weighted voltages (V1, . . .
    Type: Application
    Filed: January 9, 2002
    Publication date: January 23, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Nobuaki Yokoyama, Koji Nishimoto, Shinji Watanabe
  • Publication number: 20030000510
    Abstract: An air-fuel ratio control apparatus for an internal combustion engine in which an air-fuel ratio is always controlled to be a target value with accuracy when purge air is introduced is obtained.
    Type: Application
    Filed: December 18, 2001
    Publication date: January 2, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Hitoshi Inoue, Koji Nishimoto
  • Publication number: 20020082902
    Abstract: Based on numerical values with respect to factors influencing shares of existing products and a new product evaluated by more than one people, a structured neural network calculates predictive shares of the new product predicted by the respective persons (S6). Comprehensive evaluations on the respective products and the new product are calculated for each person, based on the numerical values with respect to the respective factors (S10). Correlation coefficients between the comprehensive evaluations on the respective products by the respective persons and the actual shares are calculated (S12), and relationships between the are obtained (S12). Predictive shares of the new product are calculated for the respective persons based on the relationships and the comprehensive evaluations on the new product (S16). The predictive shares are layered out in accordance with the correlation coefficients for the respective persons (S18).
    Type: Application
    Filed: May 31, 2001
    Publication date: June 27, 2002
    Applicant: FUJITSU LIMITED
    Inventors: Hideyuki Ando, Takashi Kanazawa, Naoto Miyashita, Koji Nishimoto
  • Publication number: 20020054345
    Abstract: A printer is connected to a portable communication terminal which is accessible to a server device on a network. The printer comprises an interface connected to the portable communication terminal, and an access device accessing to the server device by a circuit connection function of the portable communication terminal and downloading data registered in advance in the server device by the portable communication terminal.
    Type: Application
    Filed: August 27, 2001
    Publication date: May 9, 2002
    Applicant: Casio Computer Co., Ltd.
    Inventors: Takahiro Tomida, Koji Nishimoto
  • Patent number: 6223719
    Abstract: A device for controlling the amount of the air taken in by an engine, for improving the starting performance of when the accelerator pedal is depressed from the idling state. The device comprises a throttle control means 10A for operating a target throttle opening degree &thgr;o of a throttle valve 6 based on said throttle opening degree &thgr;, an accelerator opening degree &agr; and an idle signal D, and a throttle actuator 7 for opening and closing said throttle valve so that said throttle opening degree comes into agreement with said target throttle opening degree, wherein said throttle control means includes a means 11 for operating a first target throttle opening degree &thgr;o1 based on said accelerator opening degree, a means 12 for operating a second target throttle opening degree &thgr;o2 based on the idle signal, and a means 13 for operating a target throttle opening degree &thgr;o by adding up the first and second target throttle opening degrees together.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: May 1, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takayuki Yano, Ryoichi Hanazaki, Koji Nishimoto
  • Patent number: 6224510
    Abstract: A device for controlling the vehicle to travel at a constant speed, which clearly distinguishes a downhill road over a flat road while the vehicle is traveling at a constant speed, and resets or resumes the overdrive position in order to stably maintain a vehicle speed at all times. The device comprises a downhill control means 10 for resetting the overdrive position of an automatic transmission 2 when the vehicle is traveling a downhill, wherein the downhill control means includes a downhill state detection means 13 for detecting the downhill state of the vehicle based on the throttle opening degree &thgr; and the vehicle speed Vs, and an overdrive reset means 14 for resetting the overdrive position of the automatic transmission in response to the downhill state, wherein the reset state of the overdrive position is maintained while the downhill state is being detected, and the throttle valve opening degree is used as a reference for judging that the overdrive is resumed from the state of being shifted down.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: May 1, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Ryoichi Hanazaki, Koji Nishimoto, Takayuki Yano
  • Patent number: 5937808
    Abstract: A valve timing control system for an internal combustion engine which is capable of making an actual valve timing converge rapidly to a desired valve timing immediately after power-on includes a desired valve timing arithmetic means (202) for arithmetically determining desired valve timings (To) for an intake valve (17) and an exhaust valve (18), respectively, in dependence on an engine operation state (D) as detected, a variable valve timing mechanism (40) for changing open/close timings of the intake valve (17) and the exhaust valve (18), an actual valve timing detecting means (203) for detecting actual valve timings (Ta) of the intake valve (17) and the exhaust valve (18), respectively, an actual valve timing control means (204) for generating a control quantity (i) for the variable valve timing mechanism (40) so that a timing deviation (ER) of the actual valve timing (Ta) from the desired valve timing (To) becomes zero, an integral control means (205) for arithmetically determining an integral correcting
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: August 17, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hajime Kako, Koji Nishimoto
  • Patent number: 5522366
    Abstract: A fuel injection control apparatus for an internal combustion engine capable of making correctly or properly decision as to acceleration and deceleration of engine without fail on the basis of magnitude of change in the intake air quantity while excluding erroneous deceleration or acceleration decision due to overshoot or undershoot in the intake air quantity to thereby allow the exhaust gas air-fuel ratio to be maintained at least close to a stoichiometric ratio. The apparatus includes an electronic control unit comprised of a throttle-acceleration decision module, a fuel injection decreasing module and a fuel injection increasing module.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: June 4, 1996
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Konno, Shinji Mieda, Koji Nishimoto, Takanori, Fujimoto
  • Patent number: 5465700
    Abstract: When it is judged that an engine is in an acceleration state of a degree higher than a predetermined level, a fuel injection amount is increased at a rate in accordance with the detected degree of acceleration. After the end of the acceleration, the fuel injection amount is decreased with a decreasing gradient that is set in accordance with the detected degree of acceleration so as to be larger when the detected degree of acceleration is higher.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: November 14, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Koji Nishimoto
  • Patent number: 5154152
    Abstract: A fuel control device of an engine which comprises: an intake pipe pressure detecting means; a crank angle signal generating means; a transient state determining means for determining a transient state of an engine; a transient state correction fuel quantity calculating means; an averaging means for averaging the pressure data in a predetermined crank angle signal period; a basic fuel quantity selecting and calculating means for calculating a basic fuel quantity after selecting an output signal of an instantaneous value of the pressure data or an output signal of the averaging means corresponding with an output level of the transient state correction fuel quantity calculating means; a fuel injection quantity determining means for calculating a fuel injection quantity by using the transient state correction fuel quantity and the basic fuel quantity; a fuel quantity measuring means for measuring a fuel quantity for supplying by injection fuel of the fuel injection quantity by the fuel injection quantity determi
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: October 13, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Koichi Yamane, Koji Nishimoto
  • Patent number: 5123392
    Abstract: In one aspect of the present invention, fuel is injected through the injector into the internal combustion engine in non-synchronism with a predetermined crank angle or a predetermined ignition timing each time when the intake air pipe pressure traverses a predetermined set value from the smaller value side to the larger value side. In another aspect of the present invention, the fuel injection is effected in non-synchronism with the predetermined crank angle or the predetermined ignition timing when the intake air pipe pressure traverses a second predetermined value which is selected among a plurality of predetermined set values (the second predetermined value being larger in the absolute value than a first set value, and being close to the first set value) in a case that a time of traversing the first and second set values of the intake air pipe pressure is shorter than a predetermined time.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: June 23, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masanobu Uchinami, Kouichi Yamane, Koji Nishimoto
  • Patent number: 5044342
    Abstract: An automotive fuel injection system for detecting as quickly as possible the occurrence of acceleration without employing a throttle sensor to thereby perform an asynchronous fuel injection for the purpose of maintaining the air-to-fuel ratio of the combustible air-fuel mixture at an optimum value during the acceleration of the automotive engine. The automotive fuel injection system comprises a device for comparing the pressure inside the fuel intake system with an average value of the pressures inside the fuel intake system. When the pressure prevailing in the fuel intake system deviates by a predetermined quantity from the average pressure inside the fuel intake system, acceleration is deemed as actually occurring in the automotive engine and, hence, asynchronous fuel injection is effected substantially simultaneously with the detection of the occurrence of engine acceleration.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: September 3, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kouichi Yamane, Koji Nishimoto, Masanobu Uchinami
  • Patent number: D344728
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: March 1, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventor: Koji Nishimoto