Patent application number | Description | Published |
20080295513 | Adaptive Learning System and Method of Vane Position for a Variable Geometry Turbocharger - A method of operation for an engine system having a variable geometry turbocharger with a vane, the vane having a variable position is provided. The method includes adjusting a vane of the variable geometry turbocharger through a range of operation by stepping through a plurality of vane positions and holding at each of the plurality of positions, the range spanning from a substantially minimum position to a substantially maximum position of the variable geometry turbocharger, and adjusting operation of the engine based on a response to the vane adjustment. | 12-04-2008 |
20130305709 | Boost Reservoir Control - Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold. | 11-21-2013 |
20130305714 | BOOST AIR MANAGEMENT FOR IMPROVED ENGINE PERFORMANCE - Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold. | 11-21-2013 |
20130305716 | BOOST RESERVOIR AND THROTTLE COORDINATION - Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold. | 11-21-2013 |
20130311068 | COORDINATION OF CAM TIMING AND BLOW-THROUGH AIR DELIVERY - Methods and systems are provided for reducing turbo lag by directing intake air from an intake manifold to an exhaust manifold. The intake air may be directed via an EGR passage by opening an EGR valve or by may be directed via engine cylinders by increasing positive valve overlap. Amounts of air directed via external EGR and air directed via positive valve overlap are based on engine operating conditions. | 11-21-2013 |
20140138562 | VACUUM-ACTUATED WASTEGATE - Embodiments for vacuum generation are provided. In one example, a method comprises when boost is below a threshold, generating vacuum with an actuator in a first position by flowing air from a compressor outlet to an intake manifold through a first ejector, and when boost is above the threshold, generating vacuum with the actuator in a second position by flowing air from the compressor outlet to a compressor inlet through a second ejector. In this way, vacuum may be generated by more than one ejector via actuation of a common actuator. | 05-22-2014 |
20140325979 | COMPRESSOR RECIRCULATION VALVE CONTROL TO REDUCE CHARGE AIR COOLER CONDENSATE - Methods and systems are provided for adjusting a compressor recirculation valve in response to condensate forming conditions in a charge air cooler (CAC). In one example, a compressor recirculation valve may be opened in response to an induction pressure greater than a threshold pressure when the induction pressure is greater than required to produce a manifold pressure required for a torque demand. Further, a wastegate may be opened to further reduce the induction pressure during certain driving conditions. | 11-06-2014 |
20150184583 | METHODS AND SYSTEM FOR INFERRING THROTTLE INLET PRESSURE - Embodiments for controlling boost pressure in a turbocharged engine are provided. In one embodiment, a method for an engine having a throttle comprises, if an inferred throttle inlet pressure (TIP) value is different than a measured TIP value, adjusting a wastegate of a turbocharger based on the inferred TIP value and not based on the measured TIP value, the inferred TIP value based on air flow through the throttle, throttle angle, and manifold absolute pressure (MAP). In this way, boost pressure control may be provided by the inferred TIP value under some conditions. | 07-02-2015 |