Patents by Inventor Shiro Yonezawa
Shiro Yonezawa 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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Patent number: 6601115Abstract: It is an object of the present invention to provide a communication protocol converter system, which can handle a plurality of communication protocols. Communication protocol set information for an electronic control device 101 set by a personal computer 106 is sent to a variable protocol converter means 108a in an interface device 107. The variable protocol converter means 108a changes a communication protocol control program based on the communication protocol set information.Type: GrantFiled: June 21, 2000Date of Patent: July 29, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shiro Yonezawa, Hirofumi Ohuchi, Yoshikazu Sato
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Patent number: 6591184Abstract: A cylinder identifying system for an internal combustion engine enables fuel injection and ignition controls for individual cylinders to be speedily performed upon starting of engine. A cylinder identifying means (10) operating on the basis of a crank angle signal (SGT) and a cam signal (SGC) includes a pulse signal number storage means (12) for dividing an ignition control period of each cylinder into plural subperiods for counting for storage signal numbers of specific pulses generated over plural subperiods, and a subperiod discriminating means (14) for determining discriminatively a sequential order of the plural subperiods on the basis of combinations of the numbers of the specific pulses generated during the plural subperiods. The combinations of the numbers of specific pulses generated during the plural subperiods differ one another correspondingly to the plural subperiods independently from the start points thereof.Type: GrantFiled: May 2, 2001Date of Patent: July 8, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shiro Yonezawa, Atsuko Hashimoto, Hirofumi Ohuchi
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Patent number: 6454676Abstract: A control system for an internal combustion engine equipped with an automatic transmission capable of performing controls of the engine at a minimum fuel-performance cost or fuel consumption even in a nonlock-up state by correcting a target driving power so as to conform with a transmission efficiency of the automatic transmission.Type: GrantFiled: November 6, 2000Date of Patent: September 24, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Toshiaki Date, Shiro Yonezawa, Hirofumi Ohuchi
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Patent number: 6446602Abstract: A cylinder identifying system for an internal combustion engine capable of establishing a complicated cam signal pulse pattern without need for setting specific periods for cylinder identification while enhancing control performance by reducing a crank rotation angle required for cylinder identification. A cylinder identifying means (10) for identifying discriminatively individual cylinders on the basis of a crank angle pulse signal (SGT) and a cam pulse signal (SGC) includes a pulse signal number storage means (12) for counting for storage signal numbers of specific pulses generated over a plurality of subperiods which are defined by dividing an ignition control period for each of the individual cylinders into plural subperiods, and an information series storage means (15) for storing information series each composed of a combination of the signal numbers generated during plural subperiods, respectively. The individual cylinders are identified on the basis of the information series.Type: GrantFiled: April 20, 2001Date of Patent: September 10, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shiro Yonezawa, Atsuko Hashimoto, Hirofumi Ohuchi
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Publication number: 20020050272Abstract: A cylinder identifying system for an internal combustion engine capable of establishing a complicated cam signal pulse pattern without need for setting specific periods for cylinder identification while enhancing control performance by reducing a crank rotation angle required for cylinder identification. A cylinder identifying means (10) for identifying discriminatively individual cylinders on the basis of a crank angle pulse signal (SGT) and a cam pulse signal (SGC) includes a pulse signal number storage means (12) for counting for storage signal numbers of specific pulses generated over a plurality of subperiods which are defined by dividing an ignition control period for each of the individual cylinders into plural subperiods, and an information series storage means (15) for storing information series each composed of a combination of the signal numbers generated during plural subperiods, respectively. The individual cylinders are identified on the basis of the information series.Type: ApplicationFiled: April 20, 2001Publication date: May 2, 2002Inventors: Shiro Yonezawa, Atsuko Hashimoto, Hirofumi Ohuchi
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Publication number: 20020045984Abstract: A cylinder identifying system for an internal combustion engine enables fuel injection and ignition controls for individual cylinders to be speedily performed upon starting of engine. A cylinder identifying means (10) operating on the basis of a crank angle signal (SGT) and a cam signal (SGC) includes a pulse signal number storage means (12) for dividing an ignition control period of each cylinder into plural subperiods for counting for storage signal numbers of specific pulses generated over plural subperiods, and a subperiod discriminating means (14) for determining discriminatively a sequential order of the plural subperiods on the basis of combinations of the numbers of the specific pulses generated during the plural subperiods. The combinations of the numbers of specific pulses generated during the plural subperiods differ one another correspondingly to the plural subperiods independently from the start points thereof.Type: ApplicationFiled: May 2, 2001Publication date: April 18, 2002Inventors: Shiro Yonezawa, Atsuko Hashimoto, Hirofumi Ohuchi
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Patent number: 6092505Abstract: An engine controlling apparatus is provided in which a stable limp-home drive is possible even if an open breakdown of a throttle valve occurs. The apparatus includes a throttle breakdown detecting unit S1 for detecting the breakdown in a throttle controlling system including the throttle valve and a throttle opening degree sensor, a throttle power source interrupting unit S2 for interrupting a power source supply to a throttle actuator in the case where the breakdown in the throttle controlling system is detected, and a predetermined operational condition detecting unit S3 for detecting a shift of the operational condition to a predetermined operational condition corresponding to a fully closed condition of the throttle valve in operation of the throttle power source interrupting unit. A bypass controlling unit S4 opens the bypass valve to feed the air to the engine at the time when the predetermined operational condition is detected in operation of the throttle power source interrupting unit.Type: GrantFiled: March 25, 1998Date of Patent: July 25, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tatsuhiko Takahashi, Shiro Yonezawa, Satoshi Wachi, Atsuko Hashimoto, Hirofumi Ohuchi
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Patent number: 6058346Abstract: To provide a deceleration controlling apparatus for an automotive vehicle, which may perform a deceleration control that is effective in a breakdown of a throttle valve kept opened, without increasing a cost, the deceleration controlling apparatus for an automotive vehicle, includes: an engine, an accelerator pedal and a brake system which are mounted on the vehicle; an automatic transmission connected to the engine; a throttle valve for adjusting an amount of intake air of the engine; an accelerator opening degree sensor for detecting an opening degree of the accelerator pedal to output an accelerator opening degree signal; a throttle valve controlling unit for electrically controlling an opening degree of the throttle valve in response to the accelerator opening degree signal; a throttle opening degree sensor for detecting an opening degree of the throttle valve to output a throttle opening degree signal; a throttle-open breakdown detecting unit S3 for detecting a breakdown of throttle-open of the throttleType: GrantFiled: April 23, 1998Date of Patent: May 2, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Satoshi Wachi, Shiro Yonezawa, Tatsuhiko Takahashi
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Patent number: 6016794Abstract: A fuel injection control apparatus for an internal combustion engine includes an injector control apparatus 120B for controlling a fuel injection amount toward a target fuel injection amount Fm. The injector control apparatus 120B includes an expected engine revolution number calculating means 9 for calculating an expected engine revolution number Nf for a predetermined interval based on the engine revolution number Ne, expected throttle opening degree calculating means 10 for calculating an expected throttle opening degree .theta.f for the predetermined interval based on a throttle opening degree .theta., expected drawn air amount calculating means 11 for calculating an expected drawn air amount Qf for the predetermined interval based on the expected engine revolution number and the expected throttle opening degree, and target fuel injection amount calculating means 12 for calculating a target fuel injection amount Fm.Type: GrantFiled: January 27, 1998Date of Patent: January 25, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Atsuko Hashimoto, Shiro Yonezawa, Hirofumi Ohuchi, Tatsuhiko Takahashi
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Patent number: 5947077Abstract: A control device for a cylinder injection internal-combustion engine detects the deterioration of the combustion efficiency of the engine. The control device is equipped with: a fuel injection valve for directly injecting fuel to each cylinder in the internal-combustion engine; an ignition coil unit for driving a spark plug in each cylinder; an electronic control unit for driving each fuel injection valve and ignition coil unit according to the operational state of the internal-combustion engine; combustion state determining means for determining the combustion state of the internal-combustion engine; and combustion efficiency recovering means for recovering the combustion efficiency of the internal-combustion engine.Type: GrantFiled: October 24, 1997Date of Patent: September 7, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shiro Yonezawa, Hirofumi Ohuchi
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Patent number: 5924959Abstract: A device for controlling an automatic transmission and an engine for vehicles expanding a range of direct drive to improve fuel efficiency and decreasing the shock due to the transmission of torque at the time of acceleration or deceleration.Type: GrantFiled: March 9, 1998Date of Patent: July 20, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shiro Yonezawa, Satoshi Wachi, Hirofumi Ohuchi, Tatsuhiko Takahashi
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Patent number: 5875762Abstract: An engine controller includes various sensors for detecting a degree of throttle opening .theta. and a degree of accelerator opening .alpha. and a control unit 5 for determining the control amount .theta.c of a throttle actuator 1 from operating states, the control unit includes an A/D converter 70 for A/D converting respective degrees of opening at a predetermined resolving power, means 71 for calculating a target degree of throttle opening .theta.1 at a resolving power higher than the predetermined resolving power, means 72 for calculating a target degree of throttle opening .theta.2 at the predetermined resolving power in accordance with the target degree of throttle opening .theta.1 and means 73 for calculating a control amount in accordance with the target degree of throttle opening .theta.2, the target degree of throttle opening .theta.Type: GrantFiled: February 3, 1998Date of Patent: March 2, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenichi Tsuchiya, Shiro Yonezawa, Hirofumi Ohuchi, Tadashi Tubakiji
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Patent number: 5794585Abstract: A cylinder injection fuel control device for an internal-combustion engine provides a proper amount of fuel at the time of transient operation by reflecting the most up-to-date operational state in control. The cylinder injection fuel control device has a fuel injection valve for directly injecting fuel into each cylinder of an internal-combustion engine and it supplies the amount of fuel required for a single stroke of each cylinder by applying, to each fuel injection valve, an injection signal of a pulse width corresponding to the driving time of each fuel injection valve; wherein the injection signal applied in a single stroke of each cylinder is divided into three pulses, and the amount of fuel required for a single stroke is divided into three portions.Type: GrantFiled: October 24, 1997Date of Patent: August 18, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shiro Yonezawa, Hirofumi Ohuchi
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Patent number: 5388856Abstract: An automatic transmission control device which is provided with shift pattern setting member for setting a shift pattern, on the basis of shift pattern mode for an automatic transmission which is selected by shift pattern mode selecting member and also on the basis of damping force of a suspension which is set by suspension setting member. Automatic transmission control member controls the shift operation of an automatic transmission on the basis of this set shift pattern.Type: GrantFiled: January 27, 1993Date of Patent: February 14, 1995Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Shiro Yonezawa