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| Number | Title | Issue Date |
| 7836862 | Systems and methods for predicting engine delta friction torque using both coolant and oil temperature An engine control system comprises a coolant temperature weighting module that generates a weighting signal based on coolant temperature. A composite temperature generating module generates a composite temperature based on the coolant temperature, an oil temperature... | 11/23/2010 |
| 7806104 | Control apparatus for internal combustion engine An engine ECU executes a program including the steps of: detecting an engine speed NE, engine load, and engine coolant temperature (S100, S110, S115); when determination is made of being in an idle region (YES at S120), determining whethe... | 10/05/2010 |
| 7418942 | Control apparatus and control method for internal combustion engine A control apparatus retards ignition timing of the engine, and increases an amount of a fuel supplied to the engine based on a retard amount of the ignition timing, by calculating a maximum engine intake air amount at which an exhaust system temperature can be maint... | 09/02/2008 |
| 7343886 | Internal combustion engine control apparatus An internal combustion engine control apparatus is provided with a hydraulically operated variable valve operating mechanism for varying the valve timing of air intake valves, and a water temperature sensor for sensing engine coolant temperature to estimate the degr... | 03/18/2008 |
| 7331326 | Carburetor automatic control system in engine A carburetor automatic control system in an engine includes, a temperature-sensitive operating device for operating a choke valve so that the choke valve is opened with a temperature increase of the engine and a governor for opening and closing a throttle valve to m... | 02/19/2008 |
| 7274122 | Motor which performs a rotational-to-linear motion conversion A sliding hole is formed so that a screw portion can pass therethrough. Also, a seal member is provided at a portion, through which the screw portion placed in the sliding hole can pass and in which a sliding portion does not slide. ... | 09/25/2007 |
| 7210450 | Intake control apparatus and method for internal combustion engine An intake control apparatus for an internal combustion engine includes a variable valve operating mechanism capable of varying a lift and operation angle of an intake valve continuously and a control unit that controls an intake air amount by varying the lift and op... | 05/01/2007 |
| 7194319 | Method and arrangement for controlling the position of an actuating element The invention is directed to a method and an arrangement for controlling the position of an actuating element (1) which prevent damage to the actuating element by a collision with at least one stop (25, 30) and simultaneously ensure good dynamic charac... | 03/20/2007 |
| 7156073 | Idle speed control apparatus in throttle body for single cylinder A single idle air control passage (5) open toward a suction air passage (2a) downstream from a throttle valve (4), a starter passage (6) and an air screw passage (7) independently branched from an upstream side passage (5... | 01/02/2007 |
| 7137381 | Indirect variable valve actuation for an internal combustion engine A reciprocating piston-type internal combustion engine includes an engine cylinder, an intake port, an intake runner providing a passage through which intake gas enters the cylinder through the intake port, an intake valve for opening and closing the intake port, an... | 11/21/2006 |
| 7003395 | Automatic thermostat mode time limit for automatic start and stop engine control A control system for vehicle engines includes an automatic start and stop idling feature. The control starts engine running in response to detected engine conditions such as oil temperature of battery voltage in at least one mode, and in response to a thermostatic m... | 02/21/2006 |
| 6966299 | Start control device and start control method for internal combustion engine An electronic control unit adjusts an electronic throttle valve to a starting opening in a cold start mode of an engine, then maintains the opening of the electronic throttle valve so that an engine rotational speed detected by a crank angle sensor increases to a ta... | 11/22/2005 |
| 6951200 | Fuel injection rate control device In an engine (1) in which the fuel injection rate is controlled by a governor (11) having a construction in which the turning of a governor lever (31) connected to the control lever (16) of a fuel injection pump (12) is controlled ... | 10/04/2005 |
| 6945222 | Determining degradation of an idle air throttling device A method to determine degradation of an idle air throttling device in an internal combustion engine. Degradation is determined in a manner that may permit evaluation of both the idle air throttling device and expected engine operating conditions. ... | 09/20/2005 |
| 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 |
| 6925376 | System for diagnosing operation of a cooling system for an internal combustion engine A system for diagnosing operation of a cooling system for an internal combustion engine includes a coolant temperature sensor producing a temperature signal corresponding to coolant fluid temperature, means for determining either an engine load or a throttle percent... | 08/02/2005 |
| 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 |
| 6836718 | Vehicle with engine idle-management system A vehicle according to the present invention has an internal combustion engine that is controlled by an engine-control computer that is operable, when the vehicle is parked, to operate in an idle-management mode to automatically start and stop idling operation of th... | 12/28/2004 |
| 6742497 | Device for controlling rotational speed of internal combustion engine An engine speed control unit of an internal combustion engine for controlling an engine speed so that it can reach a target value, changes the engine speed so that it can reach a target value in a period of time from the completion of the initial combustion of the e... | 06/01/2004 |
| 6691676 | Engine warm-up control method In order to reduce white smoke emissions immediately after start-up, the present invention is a method for executing engine warm-up control using electronic control units, wherein start-up idle control which does not perform the prescribed fast idle contr... | 02/17/2004 |
| 6647948 | Fuel injection control apparatus and fuel injection control method for direct injection engine An engine has an injector, which directly injects fuel into a combustion chamber. When the coolant temperature during the cranking of the engine is low, an ECU controls the injector such that the engine is operated in a compression stroke injection mode. ... | 11/18/2003 |
| 6634334 | Engine idle speed control device An engine idle speed control device enhances engine cold-start performance even in engines of large displacement. The device reduces noise created by intersecting air flows after bypassing the throttle valve. The device includes first and second passages,... | 10/21/2003 |
| 6530351 | Apparatus for controlling valve timing of internal combustion engine An apparatus controls valve timing of an internal combustion engine that is provided with helical splines of an actuator for varying a phase difference in rotation and an actuator for varying a cam profile and lift of an intake cam. When the apparatus for... | 03/11/2003 |
| 6523521 | Hot water type first idle control device A hot water type first idle control device includes a heating chamber through which cooling water for an engine is allowed to flow, a wax case heated by the heating chamber, and a device housing in which the wax case is accommodated and retained. In the h... | 02/25/2003 |
| 6247446 | Electronic engine control for regulating engine coolant temperature at cold ambient air temperatures by control of engine idle speed An electronic engine control for reducing, and ideally eliminating, accumulation of products of incomplete combustion that result from cold ambient conditions acting on the engine and that otherwise might ultimately affect engine operation before the usef... | 06/19/2001 |
| 6109238 | Idling-engine-speed control method and controller therefor An idling-engine-speed control method and apparatus capable of stabilizing an engine speed before completion of warming-up even if cooling water temperatures greatly change compared to the voltage change of water temperature sensor outputs under the trans... | 08/29/2000 |
| 6085723 | Apparatus and methods for controlling idling speed of an internal combustion engine by reducing torque fluctuations Apparatus and methods are disclosed for controlling the idling speed of an internal combustion engine by reducing torque fluctuations experienced by the engine. In the disclosed apparatus, an electric machine is coupled to the drive shaft of an internal c... | 07/11/2000 |
| 6067959 | Electronic engine control for regulating engine coolant temperature at cold ambient air temperatures by control of engine idle speed An electronic engine control for reducing, and ideally eliminating, accumulation of products of incomplete combustion that result from cold ambient conditions acting on the engine and that otherwise might ultimately affect engine operation before the usef... | 05/30/2000 |
| 5961567 | Method and apparatus for performance based assessment of locomotive diesel engines This invention is directed in general to a locomotive diesel engine, and more specifically, to a method and apparatus for performance based assessment of a locomotive diesel engine.... | 10/05/1999 |
| 5954025 | Control apparatus, for internal combustion engine, for improving stability of an idle state of the engine An engine control apparatus is disclosed, in which the combustion instability is improved regardless of the type of fuel supplied to the engine so that the idle state immediately after an engine start is stabilized for improving the fuel consumption rate,... | 09/21/1999 |
| 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 |
| 5864770 | Speed and power control of an engine by modulation of the load torque A system and method of speed and power control for an engine in which speed and power of the engine is controlled by modulation of the load torque. The load torque is manipulated in order to cause engine speed, and hence power to be changed. To accomplish... | 01/26/1999 |
| 5806486 | Automative engine idle speed control A system for controlling the idle speed of an automotive engine selects a desired initial idle speed based on a sensed value of at least one engine operating parameter and operates an idle speed module to maintain the engine's idle speed at the desired in... | 09/15/1998 |
| 5806011 | Method and apparatus for performance based assessment of locomotive diesel engines A locomotive control system for performance assessment of a locomotive engine includes a controller and at least one sensor coupled to the controller. The at least one sensor is located proximal to the locomotive engine so as to gather actual performance ... | 09/08/1998 |
| 5711271 | Throttle apparatus for an internal combustion engine Electronic engine control systems have a plurality of individual components on the intake tube, some of them located relatively far from one another. For electrically connecting the individual components to the electronic control unit, relatively long ele... | 01/27/1998 |
| 5694897 | Water temperature sensor failure detecting device for idle speed control system To provide a water temperature sensor failure detecting device for an idle speed control system of an internal combustion engine which eliminates the need for a bimetallic guard mechanism, an aperture characteristic of an idle control valve (ISCV) when no... | 12/09/1997 |
| 5651342 | Auxiliary air flow control system for internal combustion engines An auxiliary air flow control system for an internal combustion engine, comprises an auxiliary air passage arranged parallel to an intake-air passage and bypassing a throttle valve disposed in the intake-air passage for diverting a part of intake air from... | 07/29/1997 |
| 5623902 | Method and arrangement for idle adjustment of an internal combustion engine A method and an arrangement for idle adjustment of an internal combustion engine provide that the idle rpm is increased when the engine is warm. A warm engine is then present when the oil temperature exceeds a threshold at which the oil pressure can becom... | 04/29/1997 |
| 5605128 | Method and arrangement for idle adjustment of an internal combustion engine A method and an arrangement for adjusting the idle of an internal combustion engine are suggested wherein the idle rpm is increased when the engine is hot. A hot engine is then present when the engine temperature and the intake-air temperature have exceed... | 02/25/1997 |
| 5582148 | Control system for the quantity of air to be inducted into engine This invention relates to a control system for the quantity of air to be inducted, which is suitable for use in controlling the idling speed of an engine, for example, for an automotive vehicle or the like. It is an object of the present invention to perm... | 12/10/1996 |
