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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Yasui; Yuji
Address:
Wako, JP
No. of patents:
99
Patents:


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Patent Number Title Of Patent Date Issued
RE43588 Exhaust gas purification system of internal combustion engine August 21, 2012
.[.A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR
RE42056 Exhaust gas purification system of internal combustion engine January 25, 2011
A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR
8297047 Exhaust gas purifying apparatus for internal combustion engine October 30, 2012
An exhaust gas purifying apparatus for an internal combustion engine having a lean NOx catalyst in an exhaust system is provided. The lean NOx catalyst traps NOx in exhaust gases when the exhaust gases are in an oxidizing state, and discharges the trapped NOx when the exhaust gases a
8046091 Control parameters for searching October 25, 2011
An optimum control parameter in control of an internal combustion engine and the like is searched. In a plurality of search cycles, a control parameter that maximizes an output of an object to be controlled which shows an output realized by a given control parameter is searched using
7765996 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaus August 3, 2010
A control input (DUT) for controlling a heater (13) which heats an active element (10) of an exhaust gas sensor (8) includes at least one of another component depending on the difference between temperature data of the active element (10) and a target temperature, a component depending
7725239 Plant control system May 25, 2010
In a system calculating control input Ucain based on the linear controller that calculates a provisional input Usl to converge an output of the plant to a desired value in accordance with response-specifying control algorithm based on the linear element and on the nonlinear compensator,
7698051 Plant control system April 13, 2010
In a system for controlling a plant (engine) 10 having an input u, there are provided with applying device (vibration signal) 100 for applying a component p that changes at a predetermined cycle to the plant, parameter calculating device (Washout Filter) 102 for calculating a parameter h
7493207 Control apparatus, control method, and engine control unit February 17, 2009
A control apparatus which is capable of compensating for a control error properly and quickly even under a condition where the control error is temporarily increased e.g. by degradation of reliability of the detection results of reference parameters other than controlled variables, there
7490596 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaus February 17, 2009
A control input (DUT) for controlling a heater (13) which heats an active element (10) of an exhaust gas sensor (8) includes at least one of another component depending on the difference between temperature data of the active element (10) and a target temperature, a component depending
7467041 Workload calculation apparatus and method for internal combustion engine, and engine control uni December 16, 2008
A workload calculation apparatus and method for an internal combustion engine, and an engine control unit are provided for accurately calculating a workload parameter indicative of the workload of the internal combustion engine. The workload calculation apparatus of the internal comb
7430854 Air fuel ratio controller for internal combustion engine for stopping calculation of model param October 7, 2008
An air fuel ratio controller for an internal combustion engine includes an exhaust gas sensor, an identifier and a control unit. The exhaust gas sensor detects oxygen concentration of exhaust gas. The identifier calculates model parameters for a model of a controlled object based on
7350433 Transmission control system April 1, 2008
A transmission control system for maintaining good positioning performance even if a dynamic characteristic of a transmission is out of a predicted range. A sliding mode controller provided in a shift controller has two degrees of freedom and can independently specify a follow-up cha
7346592 Method and an apparatus for predicting intake manifold pressure of an internal-combustion engine March 18, 2008
A method and an apparatus for predicting intake manifold pressure are presented, to compensate for a large lag or a large time delay without producing an overshot or discontinuous behaviors of a predicted value. The method comprises the step of obtaining a difference of values of a v
7340336 Plant control system March 4, 2008
A plant control system using response specifying control that makes it possible to independently set a follow-up behavior for an output value of a plant when a target output value of the plant changes and a convergent behavior for a difference between a target output value and an output
7337772 Apparatus for and method of controlling temperature of exhaust gas sensor, and recording medium March 4, 2008
The temperature of an exhaust gas flowing through an exhaust passage 3 is estimated or detected, and the temperature of an active element of an exhaust gas sensor 8. (O.sub.2 sensor) is controlled at a predetermined target temperature by a heater using the estimated or detected tempe
7305819 Plant temperature control system December 11, 2007
In a temperature control system of a plant such as an engine exhaust system, there are provided a catalyst heat model calculating a temperature estimated value of the plant, a temperature sensor model inputting the calculated value to calculate an output estimated value of a temperat
7305299 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaus December 4, 2007
An apparatus for controlling temperature of an exhaust gas sensor can include a temperature estimating device for sequentially estimating the temperature of an active element based on a predetermined element temperature model, which is representative of a temperature change of the ac
7305297 Controller for controlling a plant December 4, 2007
The present invention provides a controller for controlling a modeled plant robustly against disturbance. The controller comprises an estimator and a control unit. The estimator estimates disturbance applied to the plant. The control unit determines an input to the plant so that an o
7276008 Drive system October 2, 2007
A drive system includes an output shaft of an engine connected to a sun gear of a planetary gear assembly. An electric motor is connected, via gears, to a carrier rotatably supporting a planetary pinion gear that rotates around the outer circumference of the sun gear while rotating on
7260463 Plant control system August 21, 2007
A plant control system provides an enhanced capability of compensation for disturbance that abruptly changes. A controller includes a disturbance predictor for calculating a predicted value of disturbance on the basis of a drag force of a release spring and an assisting force of a co
7251536 Control system for plant July 31, 2007
A control system for a plant is disclosed. The control system includes a controller for controlling the plant based on a controlled object model which is obtained by modeling the plant. The controlled object model is modeled using an input and an output of the plant which are sampled at
7231844 Transmission control system June 19, 2007
A transmission control system is capable of promptly compensating for a disturbance attributable to a mechanical interference that takes place in a selecting operation so as to quickly complete the selecting operation. An adaptation disturbance observer provided in a selection controller
7231265 Control system for plant June 12, 2007
A control system for a plant is disclosed. The control system includes a controller which controls the plant based on a controlled object model which is obtained by modeling the plant. The controlled object model is modeled using an input and an output of the plant which are sampled at
7222552 Controller for transmission May 29, 2007
A controller for a transmission capable of preventing an occurrence of a gear squeak caused by a malfunction of a synchronization mechanism. The voltage determination section 24 performs a shift operation of a transmission by determining a control input Vin to a shift motor 13 so as
7216006 Control system for a plant including a slide mode controller May 8, 2007
A control system for a plant is provided. This control system can control the plant more stably, when the model parameters of the controlled object model which are obtained by modeling the plant, which is a controlled object, are identified and the sliding mode control is performed using
7203586 Controller for contact mechanism April 10, 2007
A controller for a contact mechanism for preventing a lack of a pressing force applied from a contacting member to a contacted member when determining a control input to an actuator moving the contacting member by a position control. The controller sets a target position of the conta
7200449 Control system for plant and air-fuel ratio control system for internal combustion engine April 3, 2007
A control system for a plant, having an identifier and a controller. The identifier identifies model parameters of a controlled object model which is obtained by modeling the plant. The controller calculates a control input to the plant so that an output from the plant coincides with a
7162359 Device, method, and program recording medium for control of air-fuel ratio of internal combustio January 9, 2007
An apparatus for controlling the air-fuel ratio of an internal combustion engine to stably determine a highly reliable identified value of a parameter of a model of an exhaust system including a catalytic converter and to increase the purifying capability of the catalytic converter. An
7158875 Misfire detection system for internal combustion engine January 2, 2007
In a misfire detection system for an internal combustion engine, a product is calculated at every predetermined crank angle by multiplying a value retrieved from a periodic function defined to model torque generation of individual cylinders synchronously with each combustion cycle, by a
7124015 Control apparatus for plant October 17, 2006
The present invention provides a control apparatus for a plant, which can suppress excessive correction for a spiky disturbance being applied and maintain a good controllability, when controlling the plant, which is a controlled object, with the self-tuning regulator. A detected equivale
7120530 Control apparatus of contact mechanism October 10, 2006
A low cost control apparatus of a contact mechanism resolving a disadvantage caused when a contact body is moved to make contact with a contacted body by an actuator. A synchronizing mechanism, which a coupling sleeve rotatably and integrally provided with an input shaft is pushed ag
7071638 Actuator control apparatus July 4, 2006
An actuator control apparatus is provided, capable of causing a state value which changes according to the action of an actuator to match a prescribed target value. A synchronizing mechanism is modeled as the collision of an inertial system object and an elastic system object, and ta
7050865 Control system for plant May 23, 2006
A control system for a plant is disclosed. According to this system, a model parameter vector of a controlled object model which is obtained by modeling the plant, is identified. A controller controls the plant using the identified model parameter vector. An identifying error of the mode
7050864 Control system for a plant using identified model parameters May 23, 2006
A control system for a plant is provided. This control system can control the plant more stably, when the model parameters of the controlled object model which are obtained by modeling the plant, which is a controlled object, are identified and the sliding mode control is performed using
7047728 Apparatus for and method of controlling air-fuel ratio of internal combustion engine, and record May 23, 2006
A target value Vtgt for an output Vout of an O.sub.2 sensor 8 (an exhaust gas sensor) disposed downstream of a catalytic converter 4 is set variably depending on a temperature T.sub.O2 of an active element 10 of the O.sub.2 sensor 8 by a target value setting unit 18, and the air-fuel
6992453 Actuator control system January 31, 2006
An actuator control system restrains hindrance to an object under control by an interfering substance that exists on its traveling path when the object is moved toward a target position on one axis while the object has been positioned at a target position on the other axis. A selection
6990403 Control system for plant January 24, 2006
A control system for a plant is disclosed. In this control system, a model parameter vector of a controlled object model which is obtained by modeling said plant, is calculated. A sliding mode controller is included in the control system. The sliding mode controller controls the plant
6978203 Controller for controlling element temperature of exhaust gas sensor December 20, 2005
A controller for controlling a temperature of an element disposed in an exhaust gas sensor is provided. The exhaust gas sensor further comprises a heater for heating the element. The controller comprises a control unit. The control unit performs response assignment control to determine a
6950741 Plant controller for frequency-shaping response-designating control having a filtering function September 27, 2005
A plant controller controls a plant modeled in a discrete-time system. The controller uses a frequency-shaping response-designating control algorithm having a filtering function to cause a difference between output of the plant and a target value to converge. Thus, the plant is robustly
6941936 Control system for internal combustion engine September 13, 2005
A control system for an internal combustion engine having at least one control device that affects an air-fuel ratio of an air-fuel mixture to be supplied to the engine, is disclosed. An air-fuel ratio correction coefficient is calculated for correcting an amount of fuel to be supplied
6935155 Apparatus for detecting failure of exhaust gas sensor utilizing element temperature August 30, 2005
An apparatus for detecting a failure of an exhaust gas sensor disposed in an exhaust manifold is provided. The apparatus comprises a control unit. The control unit compares detection values of the exhaust gas sensor detected under different element temperatures of the exhaust gas sensor.
6922626 Control apparatus for exhaust gas recirculation valve July 26, 2005
A control apparatus for an exhaust gas recirculation valve is disclosed. The exhaust gas recirculation valve is provided in an exhaust gas recirculation pipe for recirculating exhaust gases from an internal combustion engine to an intake system of the engine. The exhaust gas recircul
6920751 Apparatus and method for detecting failure of exhaust gas sensor July 26, 2005
An apparatus for detecting a failure of an exhaust gas sensor disposed downstream of a catalyst converter in an exhaust manifold is provided. The apparatus comprises a control unit. The control unit determines a ratio between an amplitude value of a first output of the exhaust gas sensor
6920388 Device, method, and program recording medium for control of air-fuel ratio of internal combustio July 19, 2005
An apparatus for controlling the air-fuel ratio of an internal combustion engine to compensate for the effect of the dead times of an exhaust system including a catalytic converter, etc. and to increase the purifying capability of the catalytic converter. An exhaust-side control unit 7a
6876933 Method and an apparatus for estimating an amount of drawn air of a cylinder of an internal-combu April 5, 2005
A method and an apparatus for estimating an amount of drawn air of a cylinder and a method and an apparatus for controlling the amount of drawn air, are presented. An estimated value of an amount of drawn air of the cylinder, based on intake manifold pressure, is multiplied by a value of
6859717 Control system for plant February 22, 2005
A control system for a plant is disclosed. The control system includes a response specifying type controller for controlling the plant with a response specifying type control. The response specifying type controller calculates a nonlinear input according to a sign of a value of a switchi
6840214 Air-fuel ratio control apparatus for internal combustion engine January 11, 2005
An air-fuel ratio control apparatus for controlling an air-fuel ratio of an air-fuel mixture to be supplied to an internal combustion engine having a plurality of cylinders so that the air-fuel ratio coincides with a target air-fuel ratio. An air-fuel ratio is detected by an air-fuel rat
6839598 Control system for plant using an identified model parameter vector January 4, 2005
A control system for a plant is disclosed. According to this system, a model parameter vector of a controlled object model which is obtained by modeling the plant, is identified. A controller controls the plant using the identified model parameter vector. An identifying error of the mode
6834645 Fuel supply control system for internal combustion engine December 28, 2004
A fuel supply control system for an internal combustion engine wherein a basic fuel amount supplied to said engine can be calculated according to the intake air flow rate detected by said intake air flow rate sensor. An air-fuel ratio correction coefficient can be calculated for correcti
6830032 Control system for throttle valve actuating device December 14, 2004
A control system for a throttle valve actuating device is disclosed. The throttle valve actuating device includes a throttle valve of an internal combustion engine and an actuator for actuating the throttle valve. A control object model is defined by modeling the throttle valve actuating
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