Patents by Inventor Takeshi Ishizu
Takeshi Ishizu 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: 7092811Abstract: A vehicle speed control system for a vehicle comprises a lateral acceleration sensor, a vehicle speed sensor, a target vehicle speed setting device, a drive system of the vehicle, and a controller connected. The controller is arranged to calculate a correction quantity on the basis of the lateral acceleration and the vehicle speed, to calculate a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed and the correction quantity, and to control the drive system to bring the vehicle speed closer to the command vehicles speed.Type: GrantFiled: October 31, 2003Date of Patent: August 15, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Patent number: 7050898Abstract: In a vehicle driving force control apparatus for controlling a driving force of the vehicle to achieve a target acceleration or a target vehicle speed, a running resistance estimating section calculates an estimated running resistance. A target acceleration modifying section modifies the target acceleration with the estimated running resistance and thereby decreases the target acceleration with increase in the estimated running resistance.Type: GrantFiled: September 17, 2002Date of Patent: May 23, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Tatsuya Ono, Takeshi Ishizu, Hiroyuki Ashizawa, Akira Higashimata
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Patent number: 7027904Abstract: A vehicle driving force control apparatus for a vehicle includes an actuating section to control a driving force of the vehicle so as to cause an actual vehicle speed of the vehicle to follow a target vehicle speed. A target acceleration calculating section calculates a target acceleration in accordance with an accelerator input. A target vehicle speed calculating section calculates a target vehicle speed from the target acceleration.Type: GrantFiled: September 17, 2002Date of Patent: April 11, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Ishizu, Keisei Chou
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Patent number: 6847880Abstract: A vehicle speed control system for a vehicle with an engine and an automatic transmission is comprised of a coast switch for decreasing a set vehicle speed and a controller connected with the coast switch. The controller controls a vehicle speed at the set vehicle speed by controlling the engine and the automatic transmission, and maintains a gear ratio of the automatic transmission at the gear ratio set at the moment before decreasing the set vehicle speed when the coast switch is being operated to decrease the set vehicle speed. Therefore, even if the throttle opening is opened to accelerate the vehicle, the engine rotation speed is never radically increased under such a transmission condition. This prevents the engine from generating noises excessively.Type: GrantFiled: May 14, 2001Date of Patent: January 25, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Patent number: 6746368Abstract: A vehicle speed control system is adapted to a vehicle equipped with an automatic transmission with a torque converter. The vehicle speed control system detects whether the automatic transmission is put in a lock-up condition, and corrects a command drive torque according to the lock-up condition of the automatic transmission. Particularly, the vehicle speed control system decreases a correction quantity of the command drive torque when the automatic transmission is put in the un-lockup condition. Therefore, the vehicle speed control system can adapt its response characteristic to a controlled system response characteristic which varies according to the lock-up condition of the transmission.Type: GrantFiled: May 14, 2001Date of Patent: June 8, 2004Assignee: Nissan Motor Co., Ltd.Inventors: Kazutaka Adachi, Hideki Sudo, Junsuke Ino, Takeshi Ishizu
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Publication number: 20040093144Abstract: A vehicle speed control system for a vehicle comprises a lateral acceleration sensor, a vehicle speed sensor, a target vehicle speed setting device, a drive system of the vehicle, and a controller connected. The controller is arranged to calculate a correction quantity on the basis of the lateral acceleration and the vehicle speed, to calculate a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed and the correction quantity, and to control the drive system to bring the vehicle speed closer to the command vehicles speed.Type: ApplicationFiled: October 31, 2003Publication date: May 13, 2004Applicant: NISSAN MOTOR CO., LTD.Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Patent number: 6732039Abstract: A vehicle speed control system is installed to a vehicle equipped with an engine and a continuously variable transmission (CVT). The vehicle control system is comprised of a controller arranged to execute a vehicle speed control, to suspend the vehicle speed control when a throttle opening is increased to be greater than a target throttle opening for the vehicle speed control and to restart the suspended vehicle speed control when the throttle opening becomes smaller than the target throttle opening. Further, the controller is arranged to decrease the throttle opening and to execute a shift down of the CVT when the vehicle speed at the moment of restarting the vehicle speed control is greater than or equal to the target vehicle speed. Therefore, this vehicle speed control system can quickly and smoothly decelerate the vehicle without generating shift shocks when the vehicle speed control is restarted.Type: GrantFiled: January 11, 2002Date of Patent: May 4, 2004Assignee: Nissan Motor Co., Ltd.Inventors: Junsuke Ino, Kazutaka Adachi, Takeshi Ishizu, Hideki Sudo
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Patent number: 6671607Abstract: A vehicle speed control system for a vehicle comprises a lateral acceleration sensor, a vehicle speed sensor, a target vehicle speed setting device, a drive system of the vehicle, and a controller connected. The controller is arranged to calculate a correction quantity on the basis of the lateral acceleration and the vehicle speed, to calculate a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed and the correction quantity, and to control the drive system to bring the vehicle speed closer to the command vehicles speed.Type: GrantFiled: May 14, 2001Date of Patent: December 30, 2003Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Publication number: 20030105573Abstract: A vehicle speed control system for a vehicle with an engine and an automatic transmission is comprised of a coast switch for decreasing a set vehicle speed and a controller connected with the coast switch. The controller controls a vehicle speed at the set vehicle speed by controlling the engine and the automatic transmission, and maintains a gear ratio of the automatic transmission at the gear ratio set at the moment before decreasing the set vehicle speed when the coast switch is being operated to decrease the set vehicle speed. Therefore, even if the throttle opening is opened to accelerate the vehicle, the engine rotation speed is never radically increased under such a transmission condition. This prevents the engine from generating noises excessively.Type: ApplicationFiled: January 11, 2002Publication date: June 5, 2003Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Publication number: 20030105574Abstract: A vehicle speed control system is installed to a vehicle equipped with an engine and a continuously variable transmission (CVT). The vehicle control system is comprised of a controller arranged to execute a vehicle speed control, to suspend the vehicle speed control when a throttle opening is increased to be greater than a target throttle opening for the vehicle speed control and to restart the suspended vehicle speed control when the throttle opening becomes smaller than the target throttle opening. Further, the controller is arranged to decrease the throttle opening and to execute a shift down of the CVT when the vehicle speed at the moment of restarting the vehicle speed control is greater than or equal to the target vehicle speed. Therefore, this vehicle speed control system can quickly and smoothly decelerate the vehicle without generating shift shocks when the vehicle speed control is restarted.Type: ApplicationFiled: January 11, 2002Publication date: June 5, 2003Inventors: Junsuke Ino, Kazutaka Adachi, Takeshi Ishizu, Hideki Sudo
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Publication number: 20030074124Abstract: In a vehicle driving force control apparatus for controlling a driving force of the vehicle to achieve a target acceleration or a target vehicle speed, a running resistance estimating section calculates an estimated running resistance. A target acceleration modifying section modifies the target acceleration with the estimated running resistance and thereby decreases the target acceleration with increase in the estimated running resistance.Type: ApplicationFiled: September 17, 2002Publication date: April 17, 2003Applicant: NISSAN MOTOR CO., LTD.Inventors: Tatsuya Ono, Takeshi Ishizu, Hiroyuki Ashizawa, Akira Higashimata
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Publication number: 20030060961Abstract: A vehicle driving force control apparatus for a vehicle includes an actuating section to control a driving force of the vehicle so as to cause an actual vehicle speed of the vehicle to follow a target vehicle speed. A target acceleration calculating section calculates a target acceleration in accordance with an accelerator input. A target vehicle speed calculating section calculates a target vehicle speed from the target acceleration.Type: ApplicationFiled: September 17, 2002Publication date: March 27, 2003Applicant: NISSAN MOTOR CO., LTD.Inventors: Takeshi Ishizu, Keisei Chou
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Patent number: 6529814Abstract: In automatic vehicular velocity controlling apparatus and method for automotive vehicle, a target vehicular velocity to maintain a predetermined inter-vehicle distance between a preceding vehicle which is running ahead of the vehicle is set as a first set vehicular velocity and a vehicular velocity of the vehicle (host vehicle) is controlled to give one of the first set vehicular velocity and a second set vehicular velocity by a manual setting through a set switch and an accelerate switch or coast switch if the preceding vehicle is present and is controlled to maintain the vehicular velocity at the second set vehicular velocity if no preceding vehicle is present. Then, when the set vehicular velocity is modified through the above-described accelerate switch or coast switch, a vehicular velocity variation rate is determined in accordance with a deviation between the actual vehicular velocity and a newly set vehicular velocity after the modification of the vehicular occupant's vehicular velocity.Type: GrantFiled: December 20, 2001Date of Patent: March 4, 2003Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Patent number: 6526346Abstract: In automatic vehicular velocity controlling apparatus and method for automotive vehicle having a function to maintain an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle at a target inter-vehicle distance, a response characteristic of an inter-vehicle related feedback control system is determined in accordance with a relative velocity of the vehicle to the preceding vehicle is corrected in accordance with the inter-vehicle distance, is corrected in accordance with a modification of a set inter-vehicle time duration by a vehicular occupant, and in accordance with an external disturbance value correspond to a road surface gradient of a slope during a vehicular run on the slope, in order to improve the response characteristic for the vehicular occupant not to give an un-match feeling to a driving sense.Type: GrantFiled: December 17, 2001Date of Patent: February 25, 2003Assignee: Nissan Motor Co., Ltd.Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Publication number: 20020173896Abstract: In automatic vehicular velocity controlling apparatus and method for automotive vehicle, a target vehicular velocity to maintain a predetermined inter-vehicle distance between a preceding vehicle which is running ahead of the vehicle is set as a first set vehicular velocity and a vehicular velocity of the vehicle (host vehicle) is controlled to give one of the first set vehicular velocity and a second set vehicular velocity by a manual setting through a set switch and an accelerate switch or coast switch if the preceding vehicle is present and is controlled to maintain the vehicular velocity at the second set vehicular velocity if no preceding vehicle is present. Then, when the set vehicular velocity is modified through the above-described accelerate switch or coast switch, a vehicular velocity variation rate is determined in accordance with a deviation between the actual vehicular velocity and a newly set vehicular velocity after the modification of the vehicular occupant's vehicular velocity.Type: ApplicationFiled: December 20, 2001Publication date: November 21, 2002Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Publication number: 20020161506Abstract: In automatic vehicular velocity controlling apparatus and method for automotive vehicle having a function to maintain an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle at a target inter-vehicle distance, a response characteristic of an inter-vehicle related feedback control system is determined in accordance with a relative velocity of the vehicle to the preceding vehicle is corrected in accordance with the inter-vehicle distance, is corrected in accordance with a modification of a set inter-vehicle time duration by a vehicular occupant, and in accordance with an external disturbance value correspond to a road surface gradient of a slope during a vehicular run on the slope, in order to improve the response characteristic for the vehicular occupant not to give an un-match feeling to a driving sense.Type: ApplicationFiled: December 17, 2001Publication date: October 31, 2002Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Publication number: 20010046926Abstract: A vehicle speed control system is adapted to a vehicle equipped with an automatic transmission with a torque converter. The vehicle speed control system detects whether the automatic transmission is put in a lock-up condition, and corrects a command drive torque according to the lock-up condition of the automatic transmission. Particularly, the vehicle speed control system decreases a correction quantity of the command drive torque when the automatic transmission is put in the un-lockup condition. Therefore, the vehicle speed control system can adapt its response characteristic to a controlled system response characteristic which varies according to the lock-up condition of the transmission.Type: ApplicationFiled: May 14, 2001Publication date: November 29, 2001Applicant: NISSAN MOTOR CO., LTDInventors: Kazutaka Adachi, Hideki Sudo, Junsuke Ino, Takeshi Ishizu
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Publication number: 20010044691Abstract: A vehicle speed control system for a vehicle comprises a lateral acceleration sensor, a vehicle speed sensor, a target vehicle speed setting device, a drive system of the vehicle, and a controller connected. The controller is arranged to calculate a correction quantity on the basis of the lateral acceleration and the vehicle speed, to calculate a command vehicle speed on the basis of the vehicle speed, the target vehicle speed, a variation of the command vehicle speed and the correction quantity, and to control the drive system to bring the vehicle speed closer to the command vehicles speed.Type: ApplicationFiled: May 14, 2001Publication date: November 22, 2001Applicant: NISSAN MOTOR CO., LTD.Inventors: Takeshi Ishizu, Kazutaka Adachi, Junsuke Ino, Hideki Sudo
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Patent number: 6002979Abstract: An automobile traction control system includes a traction control unit for calculating a slip amount as the difference between a drive-wheel speed and a target drive-wheel speed, an engine control unit cooperating with a fuel-supply system for decreasingly compensating the engine power by the fuel-out control action in response to the slip amount, and a temperature sensor for detecting an internal combustion engine temperature. The traction control unit is responsive to the internal combustion engine temperature for properly setting the target drive-wheel speed or for properly setting control gains of the engine control system so that the engine speed is maintained above a minimum internal combustion engine revolution speed at which engine stall is prevented.Type: GrantFiled: February 14, 1997Date of Patent: December 14, 1999Assignee: Nissan Motor Co., Ltd.Inventor: Takeshi Ishizu
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Patent number: 5991682Abstract: In apparatus and method for controlling a driving force for an automotive vehicle having an internal combustion engine, a slip condition of a driven road wheel is detected, an opening angle of an engine throttle valve so as to control the slip condition of the driven road wheel to a predetermined condition is adjusted, a target opening angle of the throttle valve according to the detected slip condition is derived, the opening angle of the throttle valve is determined, a steady state deviation of an output of the engine developed between the target opening angle of the throttle valve and the actually detected opening angle thereof is derived, and the derived steady state deviation is compensated using another driving force reducing control unit such as an engine control unit used for, for example, cutting off a fuel supply to a determined number of engine cylinders.Type: GrantFiled: February 19, 1997Date of Patent: November 23, 1999Assignee: Nissan Motor Co., Ltd.Inventor: Takeshi Ishizu