Patent application number | Description | Published |
20080196952 | Hybrid Propulsion System - A hybrid vehicle propulsion system including, an internal combustion engine coupled to an input of the fixed-ratio transmission, an electric motor coupled to the output of the multiple fixed-ratio transmission and powered at least by a battery, and a controller for adjusting the torque output of the hybrid propulsion system, the controller adjusting the multiple fixed-ratio transmission to shift from a current gear ratio to a different gear ratio upon a first condition during a first battery state of charge, and adjusting the multiple fixed-ratio transmission to shift from the current gear ratio to the different gear ratio upon a second condition during a second battery state of charge, where the second battery state of charge is lower than the first battery state of charge and the second condition is different from the first condition. | 08-21-2008 |
20080196953 | System and Method of Torque Converter Lockup State Adjustment Using an Electric Energy Conversion Device - A hybrid vehicle propulsion system including, an internal combustion engine, a torque converter including a lockup clutch the torque converter having an input and an output, the input coupled to the internal combustion engine, an electric energy conversion device coupled downstream of the torque converter output, and a control system for adjusting torque output of the hybrid propulsion system, the control system adjusting the torque output of the electric energy conversion device during a torque converter lockup clutch engagement transition event. | 08-21-2008 |
20080196954 | System and Method of Torque Transmission Using an Electric Energy Conversion Device - A hybrid vehicle propulsion system including, an internal combustion engine, a torque converter including a lockup clutch, the torque converter receiving torque from at least the internal combustion engine, a multiple fixed-ratio transmission having an input and an output, the input coupled to the torque converter, a electric energy conversion device coupled downstream of the multiple fixed-ratio transmission output, and a control system for adjusting torque output of the hybrid propulsion system, the control system adjusting torque output of the electric energy conversion device to reduce a transmission output torque load and adjusting the multiple fixed ratio transmission to cause a transition in torque transfer responsive to adjusted torque output of the electric energy conversion device. | 08-21-2008 |
Patent application number | Description | Published |
20090124450 | METHOD AND SYSTEM FOR USING MECHANICAL POWER TO OPERATE A HYBRID ELECTRIC VEHICLE - An automotive transmission transitions from a drive gear to a neutral gear when an engine is shutdown. During a rolling pull-up, a crankshaft of the engine will be spun up to a desired speed and the transmission will transition from the neutral gear to an appropriate gear based on a shift schedule. A target transmission input speed is commanded to be a synchronous speed plus an offset to smoothly transition out of electric axle drive propulsion. | 05-14-2009 |
20090150035 | Hybrid Electric Vehicle Braking Downshift Control - A hybrid propulsion system for a vehicle. The hybrid propulsion system including a multiple step fixed-gear transmission device for transmitting torque to a first at least one drive wheel, a first electric energy conversion device coupled to an input of the multiple step fixed-gear transmission device, and a control system, during a deceleration condition, the control system increasing negative torque output of the first electric energy conversion device to meet a desired wheel braking torque in response to the multiple step fixed-ratio transmission transitioning from a first gear ratio to a second gear that is higher than the first gear ratio. | 06-11-2009 |
20110031049 | System For Using Mechanical Power To Operate A Hybrid Electric Vehicle - An automotive transmission transitions from a drive gear to a neutral gear when an engine is shutdown. During a rolling pull-up, a crankshaft of the engine will be spun up to a desired speed and the transmission will transition from the neutral gear to an appropriate gear based on a shift schedule. A target transmission input speed is commanded to be a synchronous speed plus an offset to smoothly transition out of electric axle drive propulsion. | 02-10-2011 |
20110118078 | Vehicle And Method For Controlling Engine Start In A Vehicle - A vehicle includes a motor/generator, a starter motor, a disconnect clutch disposed between the engine and the motor/generator, and at least one clutch disposed between the motor/generator and the vehicle drive wheels. When an engine start is requested, various parameters are controlled to ensure a smooth engine start wherein driveline torque disturbances are minimized. The starter motor is used to crank the engine at the lowest engine speeds when the engine-required torque is the highest. This reduces the amount of torque necessary to be supplied from the motor/generator, and further helps to reduce torque disturbances in the driveline. If the motor/generator is producing torque to propel the vehicle at the time the engine start is requested, a launch clutch or one or more transmission clutches can be controlled to provide slip between the motor/generator and the vehicle drive wheels to further reduce torque disturbances in the driveline. | 05-19-2011 |
20110118915 | Vehicle And Method For Controlling Engine Start In A Vehicle - A vehicle includes a motor/generator, a starter motor, a disconnect clutch disposed between the engine and the motor/generator, and at least one clutch disposed between the motor/generator and the vehicle drive wheels. When an engine start is requested, various parameters are controlled to ensure a smooth engine start wherein driveline torque disturbances are minimized. The starter motor is used to crank the engine upon an engine start request, thereby eliminating the need to transfer torque from the motor/generator to the engine. This helps to further reduce torque disturbances in the driveline when the engine is started. | 05-19-2011 |
Patent application number | Description | Published |
20090014329 | AMPEROMETRIC SENSOR - An amperometric sensor includes a first electrode, a second electrode and a reference electrode. The sensor further includes a switch to selectably electrically connect the first electrode as a working electrode and to electrically connecting the second electrode as an auxiliary electrode during a first time interval. During a second time interval, the switch electrically connects the first electrode as the auxiliary electrode and electrically connects the second electrode as the working electrode. The switching of the two electrodes is repeated continuously as amperometric measurements are performed. Preferably, the sensor includes an ultrasonic transducer proximate the working electrode and the auxiliary electrode to clean the electrodes. | 01-15-2009 |
20090212782 | System for Maintaining pH and Sanitizing Agent Levels of Water in a Water Feature - A system automatically maintains at least one of a pH level and a sanitizing agent level of water in a water feature. The system includes a sensor assembly responsive to at least one of a pH level of the water and a sanitizing agent level of the water. The system further includes a controller which generates control signals in response to signals from the sensor assembly. The system further includes at least one of a first source containing a sanitizing agent material and a second source containing a pH-modifying material. The system further includes a third source comprising a valve assembly and a third container containing a liquid calibrant material. The valve assembly is responsive to at least a portion of the control signals from the controller by selectively allowing the calibrant material to flow from the third container through the sensor assembly to the water feature. | 08-27-2009 |
20120216605 | Amperometric Sensor System - A sensor system that measures at least one parameter of water includes an electronics subsystem and includes a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber that receives water via at least one inlet and that releases water via at least one outlet. At least one sensor has at least one electrode exposed to water in the chamber. A flow generator causes water to flow through the chamber. A plurality of objects within the chamber move in response to the water flow and abrasively clean the at least one electrode. Preferably, the sensor system includes a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between the two electrodes during a measurement interval and then applies a second differential voltage between the two electrodes during an interval following the measurement interval. | 08-30-2012 |
20130036798 | Amperometric Sensor System - A sensor system that measures at least one parameter of water includes an electronics subsystem and includes a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber that receives water via at least one inlet and that releases water via at least one outlet. At least one sensor has at least one electrode exposed to water in the chamber. A flow generator causes water to flow through the chamber. A plurality of objects within the chamber move in response to the water flow and abrasively clean the at least one electrode. Preferably, the sensor system includes a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between the two electrodes during a measurement interval and then applies a second differential voltage between the two electrodes during an interval following the measurement interval. | 02-14-2013 |
20130036799 | Amperometric Sensor System - A sensor system that measures at least one parameter of water includes an electronics subsystem and includes a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber that receives water via at least one inlet and that releases water via at least one outlet. At least one sensor has at least one electrode exposed to water in the chamber. A flow generator causes water to flow through the chamber. A plurality of objects within the chamber move in response to the water flow and abrasively clean the at least one electrode. Preferably, the sensor system includes a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between the two electrodes during a measurement interval and then applies a second differential voltage between the two electrodes during an interval following the measurement interval. | 02-14-2013 |