Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8100117 | Method and system for controlling engine exhaust An engine having one of a plurality of exhaust valves in each cylinder that may be deactivated is disclosed. In one example, one exhaust valve of each cylinder is deactivated in response to engine speed. The engine may have improved engine torque at low engine speed... | 01/24/2012 |
| 8100116 | Diesel emission reduction using internal exhaust gas recirculation A method for controlling combustion in a direct-injection diesel engine includes monitoring a crankshaft rotational position of a cylinder of the engine, monitoring an engine load, determining an intake stroke within the cylinder based upon the crankshaft rotational... | 01/24/2012 |
| 8074629 | Cylinder charge temperature control for an internal combustion engine A method of operating an engine is provided. The engine includes operating a cylinder with net exhaust flow from the exhaust manifold, through the cylinder, to the intake manifold. Concurrently, another cylinder may operate to carry out combustion with net flow from... | 12/13/2011 |
| 8037873 | Residual burnt gas scavenging method with double intake valve lift in a direct-injection supercharged internal-combusion engine, notably of diesel type The present invention relates to a method of scavenging residual burnt gas of a direct-injection internal-combustion engine, notably of diesel type, comprising at least one cylinder (10) including a combustion chamber (12), at least one exhaust means (... | 10/18/2011 |
| 7963273 | Cylinder charge temperature control for an internal combustion engine An engine is operated with a first cylinder to provide a net flow of gases from the engine intake to the engine exhaust while a second cylinder returns combusted gases back to the intake to control a timing of auto-ignition combustion in the first cylinder. ... | 06/21/2011 |
| 7779823 | Cylinder charge temperature control for an internal combustion engine An engine is operated with a first cylinder to provide a net flow of gases from the engine intake to the engine exhaust while a second cylinder returns combusted gases back to the intake to control a timing of auto-ignition combustion in the first cylinder. ... | 08/24/2010 |
| 7735477 | Internal EGR control system for internal combustion engine An internal EGR control system for an internal combustion engine, which is capable of controlling the internal EGR amount with accuracy, when controlling the internal EGR by changing both the exhaust cam phase and the exhaust valve lift. An internal EGR control syst... | 06/15/2010 |
| 7717098 | Controller of internal combustion engine An engine controller performs low opening degree control during a first intake stroke period since an engine start is commenced until first intake strokes of respective cylinders end. Thus, an opening degree of an intake throttle valve is controlled to a fully close... | 05/18/2010 |
| 7597089 | Engine with EGR system A 4-stroke cycle engine has an EGR system equipped with a particulate filter, an external EGR system, and an exhaust valve sub-lift type internal EGR system. With the engine, reduction of NOx emission by EGR can be achieved without incurring a deterioration in engin... | 10/06/2009 |
| 7588019 | Procedure to operate an internal combustion engine Methods and devices of operating an internal combustion engine, especially a gasoline engine with direct gasoline injection, in a controlled self-ignition. The internal combustion engine includes a combustion chamber, at least one intake valve and at least one exhau... | 09/15/2009 |
| 7559318 | Apparatus for an internal combustion engine An apparatus for achieving internal EGR in a four-stroke internal combustion engine which, for each cylinder, has at least one inlet valve and at least one exhaust valve for controlling the connection between combustion chambers in the cylinder and an inlet system a... | 07/14/2009 |
| 7500475 | Engine and method for operating an engine A method of operating an engine is provided. The engine may include a housing having a combustion chamber, a piston disposed adjacent the combustion chamber, a crankshaft connected to the piston, an intake valve associated with the combustion chamber, and an exhaust... | 03/10/2009 |
| 7487766 | Flexible fuel engines with exhaust gas recirculation for improved engine efficiency A method and system for use with flexible fuel engines capable of operating with arbitrary mixtures of gasoline and alternative fuel. The engine is equipped with an EGR loop and a control system, such that, as the relative amount of alternative fuel decreases, the a... | 02/10/2009 |
| 7431009 | Method for operating an internal combustion engine A method for operating a four stroke internal combustion engine in which the combustion position can be set/controlled/corrected. The phase position of intake and/or exhaust phase is shifted for this purpose. Compression ignition takes place at part-load, and spark ... | 10/07/2008 |
| 7398772 | Control apparatus for multi-cylinder internal combustion engine and control method A control apparatus calculates a exhaust gas air-fuel ratio of a plurality of cylinders, in which the operation angle of an intake valve is set to a predetermined operation angle, e.g., a maximum operation angle, based on a value output from an air-fuel ratio sensor... | 07/15/2008 |
| 7392797 | EGR failure determination system and control system for internal combustion engine An EGR failure determination system for an internal combustion engine, which is capable of accurately determining failures of both an external EGR device and an internal EGR device, irrespective of whether the EGR amount is large or small, thereby making it possible... | 07/01/2008 |
| RE40381 | Multi-cylinder diesel engine with variably actuated valves In a Diesel engine with variably actuated valves, the cam controlling each inlet valve is shaped to provoke the opening of the respective inlet valve during the engine's normal exhaust phase and thus realize exhaust gas recirculation within the engine, due to the fa... | 06/17/2008 |
| 7370616 | Method for transition between controlled auto-ignition and spark ignition modes in direct fuel injection engines A method is provided for control of transition between combustion modes of a direct-injection engine operable in a homogeneous charge compression ignition (HCCI) mode at lower loads and a spark ignition flame propagation (SI) mode at higher loads. The engine include... | 05/13/2008 |
| 7370633 | Load transient control methods for direct-injection engines with controlled auto-ignition combustion A direct injection controlled auto-ignition engine is operated at steady state, within a homogeneous charge compression-ignition (HCCI) load range and with fuel-air-diluent mixtures at predetermined conditions, for each speed and load, of engine control inputs, incl... | 05/13/2008 |
| 7367313 | Speed transient control methods for direct-injection engines with controlled auto-ignition combustion A direct injection controlled auto-ignition engine is operated at steady state, within a homogeneous charge compression-ignition (HCCI) load range and with fuel-air-diluent mixtures at predetermined conditions, for each speed and load, of engine control inputs, incl... | 05/06/2008 |
| 7367318 | Control system and control method of internal combustion engine An internal combustion engine (1) provided with a valve mechanism (VM) able to change a valve opening characteristic of at least one of an intake valve (Vi) and exhaust valve (Ve), a cylinder pressure sensor (15) for detecting a cylinder pressure in a ... | 05/06/2008 |
| 7357119 | Variable valve type internal combustion engine and control method thereof The operation modes of plural intake valves 7a and 7b provided in one cylinder is independently changed according to the drive region of the internal combustion engine. In the low air amount region, the intake airflow is controlled only w... | 04/15/2008 |
| 7353783 | Exhaust gas recirculation device for engine An exhaust gas recirculation device for an engine having a cylinder head with a suction port and an exhaust port, provided with a mechanism for recirculating a portion of exhaust gas to the suction side of the cylinder head, comprises a connection hole is opened thr... | 04/08/2008 |
| 7350502 | Apparatus and method for controlling exhaust pressure An apparatus and method of controlling exhaust pressure in an internal combustion engine are disclosed. In one embodiment the apparatus may comprise: a housing; a valve disposed in the housing; an orifice formed in the valve, wherein the orifice defines a gas flowpa... | 04/01/2008 |
| 7347179 | Method for operating an internal combustion engine In a method for operating an internal combustion engine in which the angular locations where the fuel/air mix combustions takes place can be controlled by an adjustment of the inlet and outlet valve timing, the timing of at least one of the intake and exhaust valve ... | 03/25/2008 |
| 7349791 | Control apparatus for internal combustion engine An acceleration request is detected in accordance with an accelerator opening PA (time t3 in FIG. 5B). If the detected acceleration request is a moderate acceleration request, an idle opening TA0 is set as an actual throttle opening TA (FIG. ... | 03/25/2008 |
| 7337763 | Engine valve actuation for combustion enhancement A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-strokes combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) ... | 03/04/2008 |
| 7334573 | NOx emission reduction apparatus A NOx emission reduction apparatus includes high-temperature EGR gas supply means for supplying a high-temperature EGR gas into an engine cylinder, low-temperature EGR gas supply means for supplying a low-temperature EGR gas into the engine cylinder and very-low-loa... | 02/26/2008 |
| 7325521 | System and method for improved cam retard A system and method to control valve timing and valve lift of an engine is described. The intake valve timing can be retarded while the valve is in a low lift or high lift mode. The method can lower engine friction and reduce fuel consumption, at least under some co... | 02/05/2008 |
| 7318409 | Vehicle engine control system utilizing humidity sensor A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ... | 01/15/2008 |
| 7318427 | Method for operating an internal combustion engine In a method of operating a reciprocating-piston internal combustion engine with a combustion chamber in which a fuel mix with fresh gas is provided via intake ports and combustion exhaust gases are discharged through exhaust ports which can be opened by intake valve... | 01/15/2008 |
| 7314041 | EGR control system for internal combustion engine An EGR control system that is capable of controlling the amount of recirculation of high-temperature and low-temperature recirculated gases, with high accuracy, to thereby improve the control accuracy of in-cylinder temperature. An ECU of an ERG control system calcu... | 01/01/2008 |
| 7311079 | Engine system and method with cylinder deactivation Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, ... | 12/25/2007 |
| 7305825 | Engine turbine temperature control system A turbine temperature control (TTC) system for regulating operation of an engine to control a temperature of a forced air induction device. The system includes a sensor that is responsive to an exhaust gas temperature and that generates a signal. A control module de... | 12/11/2007 |
| 7293544 | Method for operating an internal combustion engine A method retains exhaust gas in the combustion chamber of an internal combustion engine and compresses the exhaust gas during a charge change. A first fuel quantity is injected into the retained exhaust gas by direct fuel injection. A second fuel quantity is subsequ... | 11/13/2007 |
| 7290524 | Control apparatus and method for four-stroke premixed compression ignition internal combustion engine A control apparatus for a four-stroke premixed compression ignition internal combustion engine opens an exhaust valve to discharge burned gas from a combustion chamber at a first exhaust-valve opening timing, and reopens the exhaust valve at a second exhaust-valve o... | 11/06/2007 |
| 7287497 | Engine valve actuation system and method The present invention provides a valve actuation system for an internal combustion engine. The valve actuation system of the present invention may provide an increased range of auto-ignition operation by providing a valve re-opening mechanism to provide products of ... | 10/30/2007 |
| 7281518 | Method and system of diesel engine setpoint compensation for transient operation of a heavy duty diesel engine Method for controlling and improving the transient emissions of an electronically controlled heavy duty diesel engine having an ECM with memory, a turbocharger and an EGR system. ... | 10/16/2007 |
| 7275514 | Method of HCCI and SI combustion control for a direct injection internal combustion engine The present invention relates to methods for robust controlled auto-ignition and spark ignited combustion controls in gasoline direct-injection engines, including transients, using either exhaust re-breathing or a combination of exhaust re-compression and re-breathi... | 10/02/2007 |
| 7267117 | Method and device for controlling the exhaust gas recirculation in an internal-combustion engine based on the measurement of the oxygen concentration in the gaseous mixture taken in by the engine A method and a device for controlling the exhaust gas recirculation in an internal-combustion engine are described herein. The engine is provided with an air-intake system, a gas-exhaust system, and an exhaust-gas-recirculation system. A linear oxygen sensor is arra... | 09/11/2007 |
