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| Number | Title | Issue Date |
| 7861688 | Control apparatus and method of an internal combustion engine A control apparatus of an internal combustion engine includes an idle torque calculating portion, a target torque setting portion, and a target throttle opening amount calculating portion. The idle torque calculating portion and the target throttle opening amount ca... | 01/04/2011 |
| 7347184 | Controller and controlling method for internal combustion engine A base engine torque generated with an estimated intake air amount is estimated. An engine torque is corrected by correcting an ignition timing based on a difference between a required engine torque and the base engine torque. A torque correction amount is calculate... | 03/25/2008 |
| 7331328 | Control device of fuel system of internal combustion engine An engine control device executes a mechanism of controlling a fuel system during idling including the step of detecting an engine speed NE and an engine load, the step of determining whether fuel can be injected at normal feed pressure from an in-cylinder injector ... | 02/19/2008 |
| 7322339 | Apparent torque reserve at idle for direct injected engines A fuel injection system for a direct fuel injection (DFI) engine is provided. The system includes: injection mode module selects a fuel injection mode to be one of a single injection mode and a dual injection mode during DFI engine idle operation based on a torque r... | 01/29/2008 |
| 7311080 | Idle speed controller of internal, combustion engine, and internal combustion engine controller and internal combustion engine An idle rotational speed controller of an internal combustion engine includes an intake path for supplying air to a combustion chamber. An auxiliary intake path communicates the intake path on upstream and downstream sides of a throttle valve in the intake path. An ... | 12/25/2007 |
| 7299689 | Process and device for determining the internal temperature of a catalytic converter of a vehicle equipped with a heat engine The present invention pertains to a process for determining the internal temperature of a catalytic converter of a vehicle equipped with a heat engine. According to the present invention, such a process is characterized in that this temperature is determined by calc... | 11/27/2007 |
| 7249588 | Speed control method A method for controlling an engine having both an electronically controlled inlet device, such as an electronic throttle unit, and an electronically controlled outlet device, such as a variable cam timing system is disclosed. The method of the present invention achi... | 07/31/2007 |
| 7161258 | Control apparatus for internal combustion engine In a control apparatus for an internal combustion engine, an amount of electricity to be generated by an alternator (a target charging voltage) is set based on a vapor concentration of vaporized fuel when a purge execution condition is met for purging the vaporized ... | 01/09/2007 |
| 7150271 | Vapor assisted cold start control algorithm An engine system according to the present invention includes an engine and a fuel system that delivers a liquid fuel and a vapor fuel to the engine. A control module communicates with the fuel system and modulates the vapor fuel delivered to said engine based on a d... | 12/19/2006 |
| 7143742 | Injection quantity control device of internal combustion engine An engine control unit (ECU) monitors an idling rotation speed of a diesel engine and predicts a tendency of an increase in an injection quantity occurring until an increasing rate of the injection quantity converges based on an initial tendency of an increase in th... | 12/05/2006 |
| 7036982 | Method and apparatus to control an exhaust gas sensor to a predetermined termperature The invention provides a control strategy and a control system to control a gas sensor to a target operating temperature. It relies upon both feedback and model-based feedforward control systems to achieve and then maintain the sensor at the target operating tempera... | 05/02/2006 |
| 7032582 | Injection control system of internal combustion engine An electronic control unit (ECU) of an injection control system of an internal combustion engine measures an engine rotation speed in a period from a time point when an exhaust valve opens to a time point when a top dead center of a next cylinder is detected after a... | 04/25/2006 |
| 7017567 | Device and method for measuring element temperature of air-fuel ratio sensor, and device and method for controlling heater of air-fuel ratio sensor A device according to the present invention is provided with element temperature measurement voltage application circuit for temporarily applying a predetermined voltage for element temperature measurement to a sensor element of an air-fuel ratio sensor equipped to ... | 03/28/2006 |
| 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 |
| 6935306 | Lean idle speed control using fuel and ignition timing A method is presented for idle speed control of a lean burn spark ignition internal combustion engine using a fuel-based control strategy. In particular, the idle speed control strategy involves using a combination of fuel quantity or timing and ignition timing to a... | 08/30/2005 |
| 6910460 | Engine air-fuel ration control method with venturi type fuel supply device and fuel control appliance including the method An object of the present invention is to maintain stable air-fuel ratio on a venturi type fuel supply device, irrespective of the external load such as air-conditioner and electrical load, and to provide stable engine speed on idling state. A venturi type fue... | 06/28/2005 |
| 6910471 | Method for determining the fuel/air ratio in the individual cylinders of a multi-cylinder internal combustion engine A method is presented for determining the fuel/air ratio in the individual cylinders (single cylinder lambda) of an internal combustion engine having a plurality of cylinders, whose exhaust gases mix together in a common exhaust gas pipe system, from the signal of a... | 06/28/2005 |
| 6901908 | Idle speed control apparatus and method for internal combustion engine An idle speed control apparatus for an internal combustion engine is provided which, when the internal combustion engine is started in a cold mode, provides ignition timing engine speed control (m1) such that ignition timing in which said ignition driving dev... | 06/07/2005 |
| 6880523 | Measurement of engine cylinder induction air quantity An engine cylinder induction air quantity measuring apparatus includes a controller to calculate an intake manifold inside air quantity of air in an intake manifold of the engine, from a sensed intake air quantity by performing a balance calculation to calculate a b... | 04/19/2005 |
| 6848417 | Lean idle speed control using fuel and ignition timing A method is presented for idle speed control of a lean burn spark ignition internal combustion engine using a fuel-based control strategy. In particular, the idle speed control strategy involves using a combination of fuel quantity or timing and ignition timing to a... | 02/01/2005 |
| 6823839 | Apparatus for and method of controlling temperature of exhaust gas sensor, and recording medium storing program for controlling temperature of exhaust gas sensor An apparatus controls the temperature of an exhaust gas sensor disposed in an exhaust passage of an internal combustion engine. An exhaust gas temperature estimating unit sequentially estimates the temperature of exhaust gas flowing through the exhaust passage, usin... | 11/30/2004 |
| 6755176 | Fuel injection control system for engine A fuel injection is carried out as n split injections. Each of injection quantities is defined by dividing an injection quantity into n fuel injections. A FCCB correction and an ISC correction are carried out while n split injection cycles are performed. A value obt... | 06/29/2004 |
| 6662551 | Apparatus for controlling catalyst temperature and method for controlling catalyst temperature A catalyst is warmed up by a rapid heating control that retards ignition timing and increases an intake air amount. Then the warm up is completed or a transmission is shifted to a drive range, the ignition timing is gradually advanced and the intake air a... | 12/16/2003 |
| 6619277 | Engine air-fuel ratio control A state quantity ς(n) of a switching function is calculated based on a predetermined target air-fuel ratio TGABF, a detected air-fuel ratio AFSAF detected by a sensor (16), and a state equation derived from a transfer function Geng(q) of a secondary disc... | 09/16/2003 |
| 6609496 | Engine controller for an internal combustion engine An engine controller regulates fuel flow to an internal combustion engine based on sensed air flow and sensed engine operational parameters. The engine controller includes a speed sensor, a power sensor, an airflow meter and a controller unit. The speed s... | 08/26/2003 |
| 6401703 | Method and system for controlling fuel injection for direct injection-spark ignition engine A fuel injection control system for a direct injection-spark ignition type of engine forcibly turns off appliances as an external engine load while the engine operates in a stratified charge combustion mode after warming-up so as thereby to fix a quantity... | 06/11/2002 |
| 6386181 | Electronic throttle control system with wireless communication An electronic throttle control system for a vehicle utilizes wireless communication to provide command signals to a motor assembly that responsively drives the throttle control assembly. All communications between an accelerator pedal, a controller and th... | 05/14/2002 |
| 6367446 | Internal combustion engine control apparatus and method In control apparatus and method of an internal combustion engine, an engine speed change-to-throttle opening change ratio rdlnetha, that is, a ratio of the amount of change in the engine rotation speed dine to the amount of change in the extent of opening... | 04/09/2002 |
| 6295966 | Idling control system for internal combustion engine An idling control system for a two-plug type internal combustion engine is comprised of an idling detector, an engine rotation speed detector and a controller coupled to the detectors. The controller decides whether the engine rotation speed in idling is ... | 10/02/2001 |
| 6253542 | Air-fuel ratio feedback control A method of controlling the air-fuel ratio of an internal combustion engine having an exhaust passage including a catalytic converter. The method includes providing a first air-fuel ratio sensor upstream of the catalytic converter, and providing a second ... | 07/03/2001 |
| 6244248 | Verifying engine cycle of an injection IC engine The present invention relates to verifying the cycle of a fuel injection internal combustion engine during running of the engine. The engine comprises a number of cylinders with pistons linked to a crankshaft, an exhaust conduit, one or more engine operat... | 06/12/2001 |
| 6178371 | Vehicle speed control system and method A speed control method for vehicles having an internal combustion engine smoothly controls engine torque to control vehicle speed. Torque is controlled via airflow in a first torque control range. Torque is controlled via a coordination of air/fuel ratio,... | 01/23/2001 |
| 6152105 | Idle speed control device for engine An engine control device has an idle speed control of an engine by an ignition timing control and an idle speed control by air-by-fuel ratio feedback. This engine control device detects roughness caused by a torque change on the basis of a change in angul... | 11/28/2000 |
| 6016787 | Idle rotation speed learning control apparatus and method of engine In an engine whose target air-fuel ratio during the idle state is set to a leaner value than a theoretical air-fuel ratio, the target air-fuel ratio is forcibly switched to the theoretical air-fuel ratio and the learning is performed, when learning a lear... | 01/25/2000 |
| 6009851 | Idle speed control apparatus for an internal combustion engine An idle speed control apparatus includes an electronic control unit connected to sensors and switches for detecting the on-off states of an air conditioner and other devices, throttle opening, engine speed, etc. The electronic control unit selectively dri... | 01/04/2000 |
| 5975048 | Idle speed control system for direct injection spark ignition engines An idle speed control system for a direct injection spark ignition engine controlled to operate in either homogeneous air/fuel modes or stratified air/fuel modes. When operating in a stratified air/fuel mode, engine idle speed is controlled by controlling... | 11/02/1999 |
| 5975049 | Idling speed control system of internal combustion engine An internal combustion engine has an auxiliary device incorporated therewith. An idling speed control device of the engine includes a first air amount control device which controls the amount of air fed to the engine in accordance with an operation condit... | 11/02/1999 |
| 5947083 | Idling engine speed control unit The idling engine speed is controlled to a target value at a high response speed with high accuracy even during the control of the air/fuel ratio by correcting the ignition time which is effected by obtaining the concentration of oxygen and calculating an... | 09/07/1999 |
| 5934248 | Air-fuel ratio controller for internal combustion engine An air-fuel ratio controller for an internal combustion engine, which controller is capable of: properly correcting an air-fuel ratio after a start-up explosion; preventing inconveniences such as occurrence of an engine stall, a decrease in an engine rota... | 08/10/1999 |
| 5904128 | Cylinder fuel injection engine controller A cylinder fuel injection engine controller for controlling a cylinder fuel injection engine is capable of controlling the cylinder fuel injection engine for operation at a stable idling speed regardless of the variation of engine speed and load on the cy... | 05/18/1999 |
