| Patent application number | Description | Published |
|---|
| 20080228382 | ENGINE OUTPUT CONTROL SYSTEM AND METHOD - A system for an engine, comprising a cylinder located in the engine, a turbocharger coupled to the engine, a first injector for injecting a first fuel into said cylinder, wherein said first injector is a direct cylinder injector where said direct cylinder injector delivers a liquid including an alcohol, a second injector for injecting a second fuel into said cylinder, wherein said second injector is a port injector, where said port injector delivers a liquid including gasoline, a catalytic device configured to receive exhaust gases produced by at least the cylinder, and a controller configured to vary an amount of said first and second fuel injection during engine operation based on operating conditions, where amounts of variation of said first and second fuels are set to maintain a substantially stoichiometric mixture, the controller further configured to increase a relative amount of injection of the second injector in response to an indication of engine knock during a first operating condition, decrease engine boosting in response to the indication of engine knock during a second condition; and retard ignition timing in response the indication of engine knock during a third condition. | 09-18-2008 |
| 20080283004 | ELECTROMECHANICAL VALVE TIMING DURING A START - A method for starting an internal combustion engine with electrically actuated valves, the method comprising during at least a run-up in engine speed of engine starting, adjusting intake valve timing of an electrically actuated valve of a cylinder to provide a desired air amount in said cylinder, based on at least an operating condition of said engine. | 11-20-2008 |
| 20080283023 | SYSTEM AND METHOD FOR TIP-IN KNOCK COMPENSATION - A system for an engine of a vehicle traveling on the road, the system comprising a cylinder of the engine; an emission control device coupled in an exhaust downstream of the cylinder; a first injector configured to directly inject into the cylinder and coupled in a cylinder of the engine; a second injector configured to inject into a port of the cylinder and coupled to a port of the cylinder; and a controller for, in response to a driver pedal tip-in condition, increasing an amount of injection from the first injector. | 11-20-2008 |
| 20090076710 | Engine Starting for Engine Having Adjustable Valve Operation - A method for controlling an engine including at least a first cylinder having a first piston and a second cylinder having a second piston, at least one of said first and second cylinders having at least an adjustable valve, the method comprising before engine rotation: closing electrically actuated valves in at least the first and the second cylinder; fueling at least said first cylinder with a first fuel amount based on a position of the first piston and said second cylinder with a second fuel amount based on a position of the second piston; performing a first spark in at least one of said first cylinder and said second cylinder; and applying a starter motor to assist engine starting rotation; after engine rotation, firing each cylinder of the engine in a sequential firing order without changing a number of strokes in any cylinder of the engine. | 03-19-2009 |
| 20090107142 | Compression System for Internal Combustion Engine Including a Rotationally Uncoupled Exhaust Gas Turbine - As one example, a vehicle propulsion system is provided. The system includes: an internal combustion engine including at least one cylinder; an intake valve operable to selectively admit at least intake air to the cylinder; an exhaust valve operable to selectively exhaust products of combustion from the cylinder; an intake air compressor communicating with the cylinder via the intake valve; an exhaust gas turbine communicating with the cylinder via the exhaust valve; and a control system configured to operate the compressor at a different speed than the turbine, at least under an operating condition, and to adjust an amount of opening overlap between the intake valve and the exhaust valve in response to a rotational speed of the compressor. | 04-30-2009 |
| 20090292444 | BOOSTED ENGINE CONTROL RESPONSIVE TO DRIVER SELECTED PERFORMANCE - Various systems and methods are described for operating an engine in a vehicle in response to a driver performance/economy mode. One example method comprises delivering a first fuel to a cylinder of the engine from a first injector, delivering a second, different, fuel to the cylinder of the engine from a second injector, varying a relative amount of said first and second fuel as an operating condition varies; and adjusting delivery of at least said second fuel based on a driver-selected performance mode. | 11-26-2009 |
| 20090320790 | System and Method for Compensation of Fuel Injector Limits - A method for an engine configured to deliver an actively varying relative ratio of a first and second fuel via a delivery system having a first and second injector for a cylinder of the engine, where the first fuel has a lesser relative amount of alcohol, the method comprising of varying an amount of injection from the first and second injector with operating conditions, when said variation causes said first injector to approach a first minimum opening condition, increasing injection of said second injector and disabling said first injector, and when said variation causes said second injector to approach a second minimum opening condition, avoiding further reduction of said second injector and decreasing injection of said first injector. | 12-31-2009 |
| 20100101529 | ENGINE OUTPUT CONTROL SYSTEM AND METHOD - A system for an engine, comprising a cylinder located in the engine, a turbocharger coupled to the engine, a first injector for injecting a first fuel into said cylinder, wherein said first injector is a direct cylinder injector where said direct cylinder injector delivers a liquid including an alcohol, a second injector for injecting a second fuel into said cylinder, wherein said second injector is a port injector, where said port injector delivers a liquid including gasoline, a catalytic device configured to receive exhaust gases produced by at least the cylinder, and a controller configured to vary an amount of said first and second fuel injection during engine operation based on operating conditions, where amounts of variation of said first and second fuels are set to maintain a substantially stoichiometric mixture, the controller further configured to increase a relative amount of injection of the second injector in response to an indication of engine knock during a first operating condition, decrease engine boosting in response to the indication of engine knock during a second condition; and retard ignition timing in response the indication of engine knock during a third condition. | 04-29-2010 |
| 20100116244 | SYSTEM AND METHOD FOR ENGINE AIR-FUEL RATIO CONTROL - A method for operating an engine having a first injector for injecting a first fuel into a cylinder of the engine and a second injector for injection a second fuel into said cylinder of the engine, the engine further having at least an exhaust gas oxygen sensor, the method comprising of varying an amount of said first fuel injection in response to said sensor under a first operating condition, and varying an amount of said second fuel injection in response to said sensor under a second operating condition. | 05-13-2010 |
| 20100147263 | FIRST AND SECOND SPARK PLUGS FOR IMPROVED COMBUSTION CONTROL - An engine system includes two spark plugs in a cylinder of an engine. The two spark plugs have different heat ranges in order to address pre-ignition, where only a first spark plug operates during a first condition, and only a second spark plug operates during a second condition. | 06-17-2010 |
| 20100174473 | METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL - Method and systems are provided for controlling a vehicle system including an engine that is selectively deactivated during engine idle-stop conditions. One example method comprises, adjusting a brake torque applied to a deactivated rotating engine after an engine restart request, the brake torque applied to slow the engine to at least a predetermined threshold speed without stopping the engine, and engaging a starter to the still rotating engine to increase the engine speed and restart the engine. | 07-08-2010 |
| 20100192905 | SYSTEM AND METHOD FOR TIP-IN KNOCK COMPENSATION - A system for an engine of a vehicle includes methanol and water injection to abate engine knock. The injection is provided directly into the cylinder. | 08-05-2010 |
| 20100211288 | METHODS AND SYSTEMS FOR ENGINE STARTING - Methods and systems are provided for controlling a vehicle system including an engine that is selectively deactivated during engine idle-stop conditions and selectively reactivated during engine restart conditions. One example method comprises, during an engine restart from an idle stop, performing a first combustion event in a cylinder with a piston at an engine crankshaft position that is after a crankshaft position at which said cylinder's exhaust valve opens, and before a crankshaft position at which the cylinder's intake valve closes, during a cycle of said cylinder. | 08-19-2010 |
| 20100211299 | ELECTROMECHANICAL VALVE TIMING DURING A START - A method for starting an internal combustion engine with electrically actuated valves, the method comprising during at least a run-up in engine speed of engine starting, adjusting intake valve timing of an electrically actuated valve of a cylinder to provide a desired air amount in said cylinder, based on at least an operating condition of said engine. | 08-19-2010 |
| 20100223984 | FUEL VAPOR PURGING DIAGNOSTICS - Systems and methods are provided for monitoring reverse flow of fuel vapors and/or air through a vehicle fuel vapor recovery system, said fuel vapor recovery system coupled to an engine intake of a boosted internal combustion engine. One example method comprises, intermittently adjusting a restriction in the fuel vapor recovery system during boosted conditions, and indicating degradation based on one or more of a change in a pressure value, or based on a change in flow in the fuel vapor recovery system. | 09-09-2010 |
| 20100294235 | SYSTEM AND METHOD FOR COMPENSATION OF FUEL INJECTOR LIMITS - A method for an engine configured to deliver an actively varying relative ratio of a first and second fuel via a delivery system having a first and second injector for a cylinder of the engine, where the first fuel has a lesser relative amount of alcohol, the method comprising of varying an amount of injection from the first and second injector with operating conditions, when said variation causes said first injector to approach a first minimum opening condition, increasing injection of said second injector and disabling said first injector, and when said variation causes said second injector to approach a second minimum opening condition, avoiding further reduction of said second injector and decreasing injection of said first injector. | 11-25-2010 |
| 20100318277 | MULTI-FUEL ENGINE CONTROL SYSTEM AND METHOD - Various example approaches are described, one of which includes a method for adjusting relative delivery of liquid and gaseous fuel to a cylinder of the engine to effect rapid changes in cylinder air charge via changes in the displacement of fresh air by the gaseous fuel. In one particular approach, turbocharger lag is addressed by decreasing gaseous fuel injection while increasing liquid fuel injection to increase cylinder fresh air over and above any changes to fresh air via the throttle, wastegate, and/or turbocharger. | 12-16-2010 |
| 20110088669 | Compression System for Internal Combustion Engine Including a Rotationally Uncoupled Exhaust Gas Turbine - As one example, a vehicle propulsion system is provided. The system includes: an engine with an intake air compressor and an exhaust gas turbine. Further, a control is provided to operate the compressor at a different speed than the turbine, at least under an operating condition, and to adjust an amount of opening overlap between engine valves in response to a rotational speed of the compressor. | 04-21-2011 |
| 20110126797 | BOOSTED ENGINE CONTROL RESPONSIVE TO DRIVER SELECTED PERFORMANCE - Various systems and methods are described for operating an engine in a vehicle in response to a driver performance/economy mode. One example method comprises delivering a first fuel to a cylinder of the engine from a first injector, delivering a second, different, fuel to the cylinder of the engine from a second injector, varying a relative amount of said first and second fuel as an operating condition varies; and adjusting delivery of at least said second fuel based on a driver-selected performance mode. | 06-02-2011 |
