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| Number | Title | Issue Date |
| 7866299 | Idling state stabilizing device for engine An idling state stabilizing device for an engine is disclosed that can decrease the torque that is necessary for rotation of a magneto by decreasing an output current, without setting an engine speed high, even though the engine is in the idling state, can stabilize... | 01/11/2011 |
| 7370458 | Speed control system for lawnmower engine In a lawnmower engine speed control system having an actuator moving a throttle valve and a controller controlling operation of the actuator such that the engine speed becomes equal to a predefined desired engine speed, it is determined whether the lawnmower is unde... | 05/13/2008 |
| 7347183 | Control apparatus and control method for engine For accurately estimating an air quantity flowing into a cylinder at the time of operating an intake control valve, a control apparatus for an engine according to the present invention is provided with an intake control valve which can open/close an intake passage i... | 03/25/2008 |
| 7124013 | Control device, control method, control unit, and engine control unit There are provided a control device, a control method, a control unit, and an engine control unit, which are capable of controlling a controlled object with relatively large phase delay and dead time, while attaining elimination of lag in control timing between the ... | 10/17/2006 |
| 6959691 | Device and method for controlling air volume during idle operation To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the... | 11/01/2005 |
| 6948477 | Idle speed control device An idle speed control device for smoothly executing a transition from an idle state where engine speed is feedback controlled to a non-idling state where open-loop control is employed. The device includes an idling state determination section for determining whether... | 09/27/2005 |
| 6950741 | Plant controller for frequency-shaping response-designating control having a filtering function 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, ... | 09/27/2005 |
| 6925372 | Control apparatus, control method, and engine control unit A control apparatus, a control method, and an engine control unit are provided for controlling an output of a controlled object which has a relatively large response delay and/or dead time to rapidly and accurately converge to a target value. When the output of the ... | 08/02/2005 |
| 6718252 | Control apparatus for internal combustion engine Calculation of a present air-fuel ratio correction coefficient correction value ΔFAF (i) is based on a control parameter calculated by an ECU, a change in air-fuel ratio detected by an air-fuel ratio sensor, a deviation of an actual air-fuel ratio from a target air... | 04/06/2004 |
| 6516777 | Method and system for controlling internal combustion engine A method of controlling an internal combustion engine having an electromagnetically actuated intake valve for a cylinder. The controlling method comprises (a) forming first and second control regions in accordance with an engine speed of the engine, the f... | 02/11/2003 |
| 6327531 | Method of and device for determination of characteristic values of an internal combustion engine In a method of and device for providing data of a model for determination of characteristic variables for controlling an internal combustion engine, in particular an internal combustion engine with direct injection or suction pipe injection, for each pred... | 12/04/2001 |
| 6305350 | Engine speed control An idle control system for internal combustion engines providing load rejection and/or load compensation for a given engine. speed reference and barometric pressure wherein the present invention accommodates for varying engine speed references and for var... | 10/23/2001 |
| 5857443 | Devices for controlling plant, clutch slip, and idling engine speed and methods of controlling the same The present invention realizes high-speed and stable controls irrespective of the characteristic perturbations accompanied with the variation in operation point of a plant. The principle of the invention is applied to slip control of a lock-up clutch of a... | 01/12/1999 |
| 5697867 | Devices for controlling plant, clutch slip, and idling engine speed and methods of controlling the same The present invention realizes high-speed and stable controls irrespective of the characteristic perturbations accompanied with the variation in operation point of a plant. The principle of the invention is applied to slip control of a lock-up clutch of a... | 12/16/1997 |
| 5662084 | Engine idling speed control apparatus An engine idling speed control apparatus for controlling the amount of air supplied to the engine and the timing of the sparks supplied to the engine to cause the engine idling speed to follow a target engine idling speed value. In response to a demand fo... | 09/02/1997 |
| 5651341 | Control system for dynamically operative apparatuses A control system for controlling a dynamically operative apparatus having a dynamic characteristic by which a relationship between input to and output from said dynamically operative apparatus is defined includes an apparatus control subsystem and a model... | 07/29/1997 |
| 5638788 | Automotive actuator interface Control and functional isolation of an actuator applied to an internal combustion engine through an interface module which is interposed between the actuator and a controller having a control function, with state of the actuator estimated, converted to st... | 06/17/1997 |
| 5479897 | Control apparatus for internal combustion engine In order to optimally suppress effects of error exerted upon control results by any modeling error which may arise from load fluctuations or the like of the internal combustion engine approximated as a dynamic model under an advanced control theory, prese... | 01/02/1996 |
| 5463993 | Engine speed control Internal combustion engine speed is controlled through a nested plurality of compensation loops each of which is dedicated to exclusively addressing engine control processes and the delays associated therewith. State observers provide predicted state valu... | 11/07/1995 |
| 5269271 | Apparatus for controlling speed of internal combustion engine A speed control apparatus for an engine which is equipped with an air quantity control device for controlling an intake air quantity to the engine when being in an idling state and a speed control device for determining a control amount of the air quantit... | 12/14/1993 |
| 5249588 | Smoking articles A smoking article which comprises tobacco treated with a high loading level of humectant and which has been expanded by a high level expansion process to produce expanded tobacco having a humectant loading level in the range of 4% to 15%. The particulate ... | 10/05/1993 |
| 5249558 | Idle speed control system for internal combustion engine An idle speed control system for an automotive internal combustion engine having an intake air passageway through which intake air flow to be inducted into engine cylinders. The idle speed control system is comprised of an auxiliary air control valve oper... | 10/05/1993 |
| 5184588 | Engine control apparatus An engine control apparatus comprises: an actual control condition detector for detecting an actual control condition of an engine; an adjusting device for adjusting the actual control condition of the engine; and a controller for controlling the adjustin... | 02/09/1993 |
| 5133319 | Engine speed control apparatus An engine speed control apparatus comprises: a first detector for detecting an engine speed; a second detector for detecting idling condition of the engine; a first setting circuit responsive to the first detector for setting a target engine speed; a seco... | 07/28/1992 |
| 5121726 | Method and equipment for controlling the idling speed of an internal combustion engine The idling speed of an internal combustion engine is regulated with the use of an electronic control unit arranged to generate a signal for correcting the ignition advance and a signal for varying the piloting of a solenoid valve provided in a duct which ... | 06/16/1992 |
| 5040507 | Method and device for variable idle speed control of an internal combustion engine A method and device for providing a time-varying minimum engine speed setting are disclosed. A first embodiment of the device includes programming within an electronic engine control module for variably supplying fuel to an engine via variable activation ... | 08/20/1991 |
| 4860707 | Non-linear feedback controller for internal combustion engine A single physical model which receives inputs of at least the intake pressure and rotational speed of an internal combustion engine and which produces an output which controls an opening area of an intake passage is developed for a controller to control t... | 08/29/1989 |
| 4838223 | Fuel supply control apparatus for internal combustion engines When auxiliary equipment of a car, such as car air conditioner, is required to operate, fuel to be supplied for an engine is at first increased and at a predetermined time thereafter additional air commensurate with the increment of fuel is supplied, and ... | 06/13/1989 |
| 4785780 | Control apparatus A state value related to operating state of a controlled object is detected. An actuator serves to adjust the operating state of the controlled object. A target control quantity of the actuator is determined on the basis of the detected state value. The a... | 11/22/1988 |
| 4638778 | Idle speed control apparatus for internal combustion engine Apparatus for controlling idle speed of an internal combustion engine (M1) equipped with fuel injection valves (M2) comprises a throttle actuator (M4) associated with a throttle valve (M3), engine speed detecting unit (M5), intake air quantity detecting u... | 01/27/1987 |
| 4597368 | Engine idle speed control system An engine idle speed control system is described having an integral adjustment of engine idle speed for maintaining a constant engine idle speed independent of load and having load dependent gain characteristics with the integrator adjustment being a meas... | 07/01/1986 |
| 4492195 | Method of feedback controlling engine idle speed Engine idle speed is feedback controlled on the basis of multivariable control method by using mathematical dynamic models to determine engine state variables. In the present invention, low-order (e.g. 4 order) dynamic models are adopted for facilitating ... | 01/08/1985 |
