Patent application number | Description | Published |
20100300404 | DIRECT-START ENGINE OPERATION UTILIZING MULTI-STRIKE IGNITION - A method for operation of a vehicle having an internal combustion engine is provided. The internal combustion engine may include one or more combustion chambers, a fuel delivery system including a direct fuel injector coupled to each combustion chamber, an ignition system including one or more spark plugs coupled to each combustion chamber, a piston disposed within each combustion chamber, and an intake and an exhaust valve coupled to each combustion chamber, the internal combustion engine providing motive power to the vehicle. The method may include discontinuing combustion operation within the internal combustion engine responsive to idle-stop operation. The method may further include, during a direct-start, performing multi-strike ignition operation per combustion cycle via one or more selected spark plug(s) for at least a first combustion cycle in a combustion chamber following the discontinuation of combustion operation, the one or more selected spark plug(s) coupled to the combustion chamber. | 12-02-2010 |
20110041801 | DIRECT-START ENGINE OPERATION UTLIZING MULTI-STRIKE IGNITION - A method for engine starting is provided. The method may include performing idle-stop operation, and during a subsequent re-start, applying multi-strike ignition operation for a first combustion cycle. In this way, improved engine starting may be achieved with reduced emissions. | 02-24-2011 |
20110144882 | APPROACH FOR VARIABLE PRESSURE OIL INJECTION - Varying oil injection by an oil injector onto a piston of an engine to accommodate different operating conditions. | 06-16-2011 |
20110168143 | Dual Throttle for Improved Tip-Out Stability in Boosted Engine System - A method for providing intake air to an engine in a vehicle includes forming a mixture of fresh air and treated exhaust, and compressing the mixture upstream of a first throttle valve coupled to an intake manifold of the engine. The method further includes, during a higher engine-load condition, admitting the mixture to the intake manifold via the first throttle valve, and, during a lower engine-load condition, admitting fresh air to the intake manifold via a second throttle valve. | 07-14-2011 |
20110239988 | Method for Starting an Engine Automatically - A method for improving starting of an engine that may be automatically started is provided. In one example, spark timing of an automatically started engine is in advance of spark timing for an operator requested engine start. The approach may reduce vehicle driveline disturbances. | 10-06-2011 |
20120024259 | DIRECT-START ENGINE OPERATION UTILIZING MULTI-STRIKE IGNITION - A method for engine starting is provided. The method may include performing idle-stop operation, and during a subsequent re-start, applying multi-strike ignition operation for a first combustion cycle. In this way, improved engine starting may be achieved with reduced emissions. | 02-02-2012 |
20130000601 | ENGINE-LOAD MANAGEMENT TO REDUCE PARTICULATE EMISSIONS - A method for operating an engine of a vehicle. During a warm-up period following a cold start of the vehicle, a cylinder of the engine is charged to a reduced air-charge pressure, and fuel is injected into the cylinder. After the warm-up period, the cylinder is charged to a non-reduced air-charge pressure, greater for an equivalent driver demand than the reduced air-charge pressure, and fuel is injected into the cylinder. | 01-03-2013 |
20130006503 | Method for Starting an Engine Automatically - A method for improving starting of an engine that may be automatically started is provided. In one example, spark timing of an automatically started engine is in advance of spark timing for an operator requested engine start. The approach may reduce vehicle driveline disturbances. | 01-03-2013 |
Patent application number | Description | Published |
20130218438 | METHOD AND SYSTEM FOR ENGINE DILUTION CONTROL - Methods and systems are provided for enabling engine dilution control. One or more engine diluents are combined to provide a desired engine dilution, the various diluents selected based on their respective combustion stability limits. A ratio of the various diluents used is further adjusted based on engine operating limitations. | 08-22-2013 |
20140020653 | DIRECT FUEL INJECTION SYSTEM - A system in an internal combustion engine is provided. The system a combustion chamber, a first exhaust port in fluidic communication with the combustion chamber, a second exhaust port in fluidic communication with the combustion chamber, and a direct fuel injector positioned between the first and second exhaust port and fluidly communicating directly with the combustion chamber. | 01-23-2014 |
20140100760 | APPROACH FOR CONTROLLING EXHAUST GAS RECIRCULATION - Various embodiments related to controlling EGR in an engine are disclosed. In one embodiment, a first EGR amount is supplied to a cylinder at a first temperature and a first engine speed and load. Further, at the first engine speed and load, as engine temperature increases from the first temperature to a second temperature, a first fuel amount is injected after exhaust valve closing and before intake valve opening while a second EGR amount is supplied to the cylinder that is greater than the first EGR amount. | 04-10-2014 |
20140100762 | METHOD AND SYSTEM FOR KNOCK CONTROL - Methods and systems are provided for improving engine knock control by accounting for a drop in charge cooling efficiency of a knock control fluid at higher temperatures. In response to the prediction of an elevated temperature of a knock control fluid at a time of release from a direct injector, a pulse width of the injection is adjusted. Any knock relief deficits are compensated for using alternate engine adjustments, such as boost or spark timing adjustments. | 04-10-2014 |
20140278005 | METHOD FOR IMPROVING ENGINE STARTING - A method and system for improving starting of an engine that may be repeatedly stopped and started is presented. In one example, the method adjusts a port fuel injection amount in response to engine stopping position. The engine stopping position may be indicative of a fraction of injected fuel that enters a cylinder for a first combustion event since engine stop. | 09-18-2014 |
20150020768 | FUEL INJECTOR SPRAY PATTERN - A fuel injector having an injector axis, comprising a first nozzle aiming in a first radial direction; a first nozzle pair aiming in radial directions each equally angled relative to the first direction, closest to the first radial direction, and having a longest radial offset; a nozzle second pair in radial directions each equally angled relative to the first direction; and another nozzle aiming opposite the first radial direction and having a shortest radial offset. | 01-22-2015 |
20150025780 | METHODS AND SYSTEMS FOR IMPROVING ENGINE STARTING - Systems and methods for restarting an engine are presented. In one example, fuel is injected to cylinder ports before the engine is stopped such that the injected fuel is not inducted into the cylinders before an engine restart is requested. The method may improve fuel vaporization during engine restarting. | 01-22-2015 |
20150075484 | DIRECT INJECTION FUEL PUMP - Methods and systems are provided for a direct injection fuel pump. The methods and system control pressure within a compression chamber so as to improve fuel pump lubrication. | 03-19-2015 |
20150114348 | MULTIPLE TAP ASPIRATOR - Systems and methods are provided for engine systems including a vacuum-powered multiple tap aspirator coupled between atmospheric, an engine crankcase, or another source and a vacuum source such as a compressor inlet or engine intake manifold. The multiple tap aspirator includes a suction tap arranged in a throat of the aspirator, a suction tap arranged in a diverging cone of the aspirator, and a suction tap arranged in a straight exit tube downstream of the diverging cone of the aspirator. The aspirator provides vacuum generation and suction flow over a range of vacuum levels at the suction taps, and suction flow only passes through a single check valve before entering the aspirator. | 04-30-2015 |
20150204264 | METHOD AND SYSTEM FOR ENGINE STARTING - A method and system for improving starting of an engine is presented. In one example, the method selects a first cylinder to receive fuel since engine stop based on intake valve closing time. The method also describes selecting the first cylinder to receive fuel since engine stop based on an end of fuel injection time. | 07-23-2015 |
20150204283 | MULTIPLE TAP ASPIRATOR WITH LEAK PASSAGE - Systems and methods are provided for engine systems including a multiple tap aspirator with a throat tap and a diffuser tap. Suction passages coupled to the throat and diffuser taps, respectively, may fluidly communicate via a leak passage with a flow restriction. During conditions where the pressure at a suction flow source of the diffuser tap is less than the pressure at the diffuser tap, backflow from the diffuser tap may travel through the leak passage into the throat tap. | 07-23-2015 |