Patent application number | Description | Published |
20100218588 | System and Method for Calibrating an Absolute Position Sensor - A system and method for calibrating an absolute angular position sensor and/or for providing pre-calibrated absolute angular position sensors comprises comparing, at a pre-elected number of angular positions, the angular position derived from the output of the sensor to the angular position reported by a reference sensor. The difference between the two outputs is used as an error correcting factor for the respective position. In addition to calibrating the sensor to reduce sensor errors, the calibration can also be used to determine the sensor output corresponding to an index position of interest. | 09-02-2010 |
20100235138 | Engine Flexible Drive Elongation Measurement - A system and method is provided for determining changes in the angular position of a driven pulley, with respect to a driving pulley, when the driven and driving pulleys are synchronously linked by a flexible drive member such as a toothed belt or a chain. From these determined changes in the angular positions, the system and method can determine the condition of the flexible drive member and can output an appropriate signal when the condition of the flexible drive member has exceed a pre-defined value. Further, the system and method can detect a variety of other undesired conditions in the operation of an engine and/or the relative angular position information can be used to alter operation of the engine to improve the engine's operating efficiency and/or reduce the emissions created during operation of the engine. | 09-16-2010 |
20120133465 | ELECTROMAGNET AND ELECTROMAGNETIC COIL ASSEMBLY - An electromagnet may comprise a pole piece and a coil assembly. The pole piece may be monolithically formed of a magnetically susceptible material and have a channel structure and a first flange member. The channel structure may have an annular inner side wall, an annular outer side wall and an annular end wall that fixedly couples the inner and outer side walls to one another on a first axial end of the pole piece. The channel structure may be open on a second axial end of the pole piece that is opposite the first axial end. The first flange member may be coupled to an end of one of the inner and outer side walls on the second axial end and extend radially from the channel structure. The coil assembly may be fixedly coupled to the channel structure between the inner and outer side walls. | 05-31-2012 |
Patent application number | Description | Published |
20100065001 | Starter and Accessory Drive System And Method For Hybrid Drive Vehicles - A starter and accessory drive system and method for hybrid drive vehicles is provided. The invention isolates the accessory drive system from the transfer of torque between a starter motor and the crankshaft of the engine. In one embodiment, a dedicated flexible drive member transfers torque from the starter motor to the crankshaft to re-start the engine. In another embodiment, a torque transfer control is employed to selectively apply torque from the starter motor to the accessory drive, to drive the accessories when the engine is stopped, and/or to the engine crankshaft to re-start the engine. In another embodiment of the invention, the accessory drive is isolated from the engine crankshaft and is instead driven by a drive motor on the accessory drive while the engine crankshaft is connected to a starter motor and/or generator which can be energized to re-start the engine. | 03-18-2010 |
20100122882 | DRIVEN ACCESSORY WITH LOW-POWER CLUTCH FOR ACTIVATING OR DE-ACTIVATING SAME - A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface. | 05-20-2010 |
20130008758 | DRIVEN ACCESSORY WITH LOW-POWER CLUTCH FOR ACTIVATING OR DE-ACTIVATING SAME - A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface. | 01-10-2013 |
20130093547 | ELECTRO-MECHANICAL DEVICE AND ASSOCIATED METHOD OF ASSEMBLY - A method of setting an air gap between an electromagnetic coil and an armature of an electro-mechanical device to be within a desired range includes applying a sensing signal to the electromagnetic coil and monitoring at least one electrical characteristic of the electromagnetic coil. The at least one electrical characteristic is related to a size of the air gap and the sensing signal. The method further includes moving the armature towards the electromagnetic coil to reduce the size of the air gap and stopping movement of the armature towards the electromagnetic coil when the at least one electrical characteristic indicates the size of the air gap is within the desired range. | 04-18-2013 |
20130172137 | INTELLIGENT BELT DRIVE SYSTEM AND METHOD - In one aspect, the invention relates to a tensioner that is capable of precognitively anticipating when it is desirable to increase the tension in a belt or other endless drive element so as to prevent belt slip prior to events that would raise the risk of it. | 07-04-2013 |
20140309882 | INTELLIGENT BELT DRIVE SYSTEM AND METHOD - In one aspect, a tensioner that incorporates a fluid actuated cylinder and that is capable of precognitively anticipating when it is desirable to increase the tension in a belt or other endless drive element so as to prevent belt slip prior to events that would raise the risk of it. | 10-16-2014 |
20150041277 | CLUTCH ASSEMBLY - In an aspect, a clutch assembly is provided that uses an electromagnet to generate a magnetic circuit which drives an armature to a position whereat it engages the clutch to operatively connect a rotating member to a stationary member. In embodiments wherein the armature initially rotates with the rotating member, the magnetic circuit passes through the stationary member. In embodiments wherein the armature is initially stationary, the magnetic circuit extends through the rotating member. | 02-12-2015 |