| Patent application number | Description | Published |
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| 20110174266 | METHOD AND SYSTEM FOR CONTROLLING VACUUM - An engine with a two vacuum sources is disclosed. In one example, a valve position is adjusted in when engine load is low and intake manifold pressure is low to arbitrate vacuum between the two vacuum sources. The approach may increase engine operating efficiency during at least some conditions. | 07-21-2011 |
| 20110203269 | Engine Vacuum System - A vacuum pump onboard a vehicle provides vacuum for a brake booster and to control the electronic vacuum regulation valve (EVRV) valve of a wastegate on a turbocharger. Commands to the EVRV are based on an operating condition of an engine and the vacuum level in the vacuum system. In one example, a vacuum sensor is provided to determine vacuum proximate the EVRV. In another example, the vacuum proximate the EVRV is modeled based on the vacuum at the brake booster, which may be determined by a vacuum sensor coupled to the brake booster. | 08-25-2011 |
| 20110225967 | TURBOCHARGER CONTROL - Various systems and methods for controlling a turbocharger of an engine via a wastegate are described. In one example, the wastegate is adjusted according to a difference between the boost pressure and the atmospheric pressure. In this manner, the interdependency between controlling the boost pressure and using the boost pressure to actuate the wastegate in a boost-based wastegate configuration may be reduced. | 09-22-2011 |
| 20110283699 | EXHAUST GAS RECIRCULATION (EGR) SYSTEM - Various systems and methods are described for an exhaust gas recirculation (EGR) system coupled to an engine in a vehicle. One example method comprises, calculating an EGR mass flow from a difference between measurements of clean air mass flow and total mass flow, and correcting for a transient mass flow error. | 11-24-2011 |
| 20110314807 | TURBOCHARGER CONTROL - Various systems and methods for controlling a turbocharger of an engine via a wastegate are described. In one example, actuation of the wastegate is limited when outside a range, the limits of the range varying with boost pressure, turbine inlet pressure, turbine outlet pressure, and atmospheric pressure. In this manner, a tracking error may be reduced when controlling the boost pressure and using the boost pressure to actuate the wastegate in a boost-based wastegate configuration. | 12-29-2011 |
| 20120037134 | METHOD AND SYSTEM FOR EXHAUST GAS RECIRCULATION CONTROL - Methods and systems are provided for adjusting an EGR valve and one or more intake throttles responsive to the output of an intake oxygen sensor to provide a desired amount of EGR flow while maintaining engine torque. The adjustments are coordinated to improve distributed control of the EGR valves and intake throttles, and enable EGR flow even when one actuator is limited. | 02-16-2012 |
| 20120097130 | METHOD AND SYSTEM FOR CONTROLLING VACUUM - An engine with a two vacuum sources is disclosed. In one example, a valve position is adjusted in when engine load is low and intake manifold pressure is low to arbitrate vacuum between the two vacuum sources. The approach may increase engine operating efficiency during at least some conditions. | 04-26-2012 |
| 20120159933 | MODELING CATALYST EXOTHERM DUE TO BLOWTHROUGH - Modeling catalyst exotherm due to blowthrough is provided. The method of advantageously utilizes catalyst temperature based on an amount of blowthrough air and a combustion air-fuel ratio generating a catalyst exotherm. | 06-28-2012 |
| Patent application number | Description | Published |
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| 20090056917 | NANOSTRUCTURED MICRO HEAT PIPES - A heat pipe comprising a chamber; a wick in the chamber, and a heat sink, which is adjacent to a first portion of the wick. A heat source adjacent to a second portion of the wick, wherein the wick is configured such that a gas condenses at the first portion of the wick and a liquid evaporates at the second portion of the wick. The fluid moves from the first portion of the wick to the second portion of the wick, and wherein the wick comprises nanostructures having a differentially-spaced apart gradient along the length of the wick so as to promote capillary fluid flow therealong. | 03-05-2009 |
| 20090283751 | NANOTUBES AND DEVICES FABRICATED THEREFROM - Nanofluidic devices incorporating inorganic nanotubes fluidly coupled to channels or nanopores for supplying a fluid containing chemical or biochemical species are described. In one aspect, two channels are fluidly interconnected with a nanotube. Electrodes on opposing sides of the nanotube establish electrical contact with the fluid therein. A bias current is passed between the electrodes through the fluid, and current changes are detected to ascertain the passage of select molecules, such as DNA, through the nanotube. In another aspect, a gate electrode is located proximal the nanotube between the two electrodes thus forming a nanofluidic transistor. The voltage applied to the gate controls the passage of ionic species through the nanotube selected as either or both ionic polarities. In either of these aspects the nanotube can be modified, or functionalized, to control the selectivity of detection or passage. | 11-19-2009 |
| 20100022680 | Microfluidic Synthesis of Organic Nanoparticles - The present invention provides microfluidic systems and methods for the production of particles (e.g., nanoparticles) for drug delivery. The present invention provides microfluidic devices useful for production of particles by nanoprecipitation. The present invention provides highly homogenous compositions of particles produced by inventive microfluidic devices. | 01-28-2010 |
| 20120171778 | FUNCTIONALIZATION OF NANOFLUIDIC CHANNELS - A functionalized nanofluidic channel and method for functionalization that provides control over the ionic environment and geometry of the nanofluidic channel with the immobilization of biomolecules on the inner surface of the channel and use of high ionic concentration solutions. In one embodiment, the surface charge of the nanochannel is controlled with the immobilization of a protein such as streptavidin in the nanochannel. In another embodiment, the biomolecules are receptors and changes in nanochannel conductance indicates ligand binding events. The functionalized nanofluidic channel can be easily adapted for use with microchannel arrays. | 07-05-2012 |
