Patent application number | Description | Published |
20140244067 | ROAD GRADE AUTO-MAPPING - Road grade is modeled over a region in which a vehicle is driven on roadways having a grade that varies over a plurality of predetermined grade ranges. A succession of grade values are generated while operating the vehicle at a predetermined rate, wherein each grade value identifies a respective grade range then being encountered. A Markov chain road-grade model is updated in response to the succession of grade values, wherein the model represents respective elements of probability in a matrix of transition events from each predetermined grade range to a respective next-in-succession grade range. Each element of the matrix has a value π | 08-28-2014 |
20140244129 | EFFICIENCY-BASED SPEED CONTROL WITH TRAFFIC-COMPATIBLE SPEED OFFSETS - Vehicle apparatus includes a speed control for adjusting a vehicle powertrain of the vehicle in response to a speed setpoint. A grade estimator determines a road grade of a roadway where the vehicle is traveling. A traffic density estimator determines a density of traffic traveling on the roadway in the vicinity of the vehicle. An optimizer executes a selected control policy to periodically generate speed adjustments for applying to the speed setpoint to operate the vehicle powertrain at increased efficiency. The control policy is based on a value function providing an optimized solution for a cost model responsive to the determined road grade to generate an initial speed offset. The optimizer reduces the initial speed offset in proportion to the determined traffic density to generate the speed adjustments. The system minimizes negative impacts to overall traffic flow as well as any negative contribution to reduced fuel efficiency of surrounding traffic. | 08-28-2014 |
20140244130 | ON-BOARD REAL-TIME SPEED CONTROL SETPOINT VARIATION USING STOCHASTIC OPTIMIZATION - Vehicle apparatus adjusts a vehicle powertrain of the vehicle in response to a speed setpoint. An optimizer selects a control policy to periodically generate speed adjustments for applying to the speed setpoint to operate at increased efficiency. The control policy is based on a value function providing an optimized solution for a cost model and a transition probability model. The transition probability model corresponds to a driving state defined according to a plurality of dimensions including a time-of-day dimension and a geographic region dimension. The transition probability model and the control policy have inputs based on road grade and speed. The optimizer collects road grade data during routine driving of the vehicle to construct a observed transition probability model and uses divergence between the observed transition probability model and a set of predetermined transition probability models to identify a control policy for use during the routine driving. | 08-28-2014 |
20140277835 | ROUTE NAVIGATION WITH OPTIMAL SPEED PROFILE - Energy consumption of a vehicle is optimized while traveling a route assembled of road segments between a first position and a destination. A speed profile generator is located at least partially off of the vehicle and uses an energy consumption model of the vehicle together with road grade data corresponding to the route to calculate an optimal speed profile. The speed profile specifies target speeds for respective locations on the route for traversing the route with an optimized energy consumption. The speed profile generator compares energy consumption for a plurality of feasible speed profile trajectories between a maximum trajectory and a minimum trajectory in order to identify the optimal speed profile. A speed updater is responsive to a current position of the vehicle and the optimal speed profile to initiate the target speed for the current position. | 09-18-2014 |
Patent application number | Description | Published |
20080262695 | Engine mode transition utilizing dynamic torque control - A method of operating an engine having a plurality of cylinders, the method comprising of transitioning the engine from a first mode to a second mode, and temporarily adjusting an amount of torque produced by a cylinder of the engine for at least one cycle responsive to a difference in an amount of torque produced by a previous firing cylinder and a subsequent firing cylinder. | 10-23-2008 |
20080308069 | ENGINE FUELING CONTROL DURING CYLINDER VALVE MODE TRANSITIONS - A method of control fueling of a cylinder in an internal combustion engine, the cylinder having at least two intake valves, the method comprising of operating in a first mode with one active intake valve and one inactive intake valve during a cycle of the cylinder operating in a second mode with two active intake valves during a cycle of the cylinder and adjusting a fuel injection from an injector configured to deliver fuel through at least the two intake valves, where the fuel injection adjustment is responsive to a transition in modes and based on whether the transition is from the first mode to the second mode, or from the second mode to the first mode. | 12-18-2008 |
20090090318 | METHOD FOR CONTROLLING AIR-FUEL RATIO FOR AN ALTERNATING VALVE ENGINE - A method for controlling the air-fuel ratio of an internal combustion engine operating with alternating intake valves is presented. According to the method, engine air-fuel ratio can be adjusted by changing valve timings or fuel during a cylinder cycle. | 04-09-2009 |
20100012053 | MULTI-STROKE VARIABLE DISPLACEMENT ENGINE - A vehicle propulsion system and method of operation are presented. As one example, the method includes operating an engine to produce an engine output; transferring the engine output to one or more drive wheels of the vehicle via a transmission; responsive to a first condition, varying torque supplied to the drive wheels by adjusting a relative number of combusting cylinders and deactivated cylinders of the engine; and responsive to a second condition, varying the torque supplied to the drive wheels by adjusting a number of strokes performed by the combusting cylinders per combustion cycle while shifting the transmission between different gear ratios. | 01-21-2010 |
20100012088 | ENGINE CONTROL INCLUDING KNOCK COMPENSATION - Systems and methods are described, including one example method of controlling an engine having a cylinder with at least one valve operated by a variable valve mechanism (VVM) having a sensor coupled to the valve, the method comprising: adjusting at least one operating parameter in response to an indication of detonation of a combustible mixture in the cylinder, the indication based on the sensor coupled to the valve. | 01-21-2010 |
20100180840 | METHOD FOR CONTROLLING AIR-FUEL RATIO FOR AN ALTERNATING VALVE ENGINE - A method for controlling the air-fuel ratio of an internal combustion engine operating with alternating intake valves is presented. According to the method, engine air-fuel ratio can be adjusted by changing valve timings or fuel during a cylinder cycle. | 07-22-2010 |
20110239963 | MULTI-STROKE VARIABLE DISPLACEMENT ENGINE - A vehicle propulsion system and method of operation are presented. As one example, cylinder deactivation and transitioning from four to two strokes is coordinated with transmission shifting to improve vehicle response. Additionally, it is possible to reduce transitions in operating modes to improve drive feel. | 10-06-2011 |
20120010767 | HYBRID ELECTRIC VEHICLE AND METHOD OF CONTROL USING PATH FORECASTING - A path-dependent control of a hybrid electric vehicle (HEV) includes segmenting a route into segments, generating a sequence of battery state-of-charge (SoC) set-points for the segments, and controlling the vehicle in accordance with the battery SoC set-points as the vehicle travels along the route. | 01-12-2012 |
20120010768 | HYBRID ELECTRIC VEHICLE AND METHOD OF PATH DEPENDENT RECEDING HORIZON CONTROL - A path-dependent control of a hybrid electric vehicle (HEV) includes segmenting an original route into segments. A virtual route based on the remaining portion of the original route is generated once the HEV reaches a current segment of the original route. The virtual route includes a first segment corresponding to the current segment of the original route and a last segment representing at least two other segments of the remaining portion of the original route. Battery SoC set-points for the segments of the virtual route are generated. The vehicle is controlled according to the battery SoC set-point for the first segment of the virtual route as the vehicle travels along the current segment of the original route. | 01-12-2012 |
20130319350 | MULTI-STROKE VARIABLE DISPLACEMENT ENGINE - A vehicle propulsion system and method of operation are presented. As one example, cylinder deactivation and transitioning from four to two strokes is coordinated with transmission shifting to improve vehicle response. Additionally, it is possible to reduce transitions in operating modes to improve drive feel. | 12-05-2013 |
20140095003 | Electric Vehicle and Method of Battery Set-Point Control - A method includes utilizing navigation data from a navigation system to segment a route to be travelled by a travelling vehicle into segments each having a road grade different than neighboring segments. The method further includes discharging a battery of the vehicle as the vehicle travels along an initial segment of the route according to a state-of-charge (SoC) set-point based on the road grade of the initial segment and a variable representative of the road grades of at least two other segments of the route. | 04-03-2014 |
20140149017 | SYSTEM AND METHOD FOR IMPROVING VEHICLE PERFORMANCE - Methods and systems for adjusting vehicle operation in response to vehicle weight are described. In one example, an adaptive driver demand correction is adjusted in response to vehicle weight. The methods and systems may provide for more consistent powertrain response and lower vehicle emissions at lower vehicle weights. | 05-29-2014 |
20140248995 | MULTI-STROKE VARIABLE DISPLACEMENT ENGINE - A vehicle propulsion system and method of operation are presented. As one example, cylinder deactivation and transitioning from four to two strokes is coordinated with transmission shifting to improve vehicle response. Additionally, it is possible to reduce transitions in operating modes to improve drive feel. | 09-04-2014 |
20140288799 | SYSTEM AND METHOD FOR MODIFYING ADAPTIVE CRUISE CONTROL SET POINTS - A driver performance mapping system for a vehicle system is disclosed. The system may include a GPS receiver generating GPS data indicative of a current location of the vehicle. In addition, the system may also have a radar device generating current gap data indicative of a current gap distance from the vehicle to a lead vehicle. Further, the system may include an electronic controller configured to generate learned gap data based on the current gap data and stored gap data, and then assign the learned gap data with the GPS data. | 09-25-2014 |
20150018981 | SYSTEM AND METHOD FOR FEEDBACK ERROR LEARNING IN NON-LINEAR SYSTEMS - A method for operating an actuator is disclosed. The actuator may be a linear or non-linear actuator. In one example, a pseudo-inverse piecewise bilinear model is adapted in response to output of a feedback controller to improve feed forward control. | 01-15-2015 |
Patent application number | Description | Published |
20090041209 | ADJUSTING MUSIC LENGTH TO EXPECTED WAITING TIME WHILE CALLER IS ON HOLD - A method of adjusting music length to expected waiting time while a caller is on hold includes choosing one or more media selections based upon their play duration and matching the selection(s) to the expected waiting time. | 02-12-2009 |
20120209613 | METHOD AND ARRANGEMENT FOR MANAGING GRAMMAR OPTIONS IN A GRAPHICAL CALLFLOW BUILDER | 08-16-2012 |
20130042183 | DATA SHARING SOFTWARE PROGRAM UTILIZING A DRAG-AND-DROP OPERATION AND SPRING-LOADED PORTAL - Embodiments include a program for transferring of data from a source computer to a location on a target computer utilizing a drag-and-drop operation and a spring-loaded portal. I/O devices are monitored for mouse input that includes coordinates of a mouse pointer. Whether an end-user is utilizing the mouse pointer to perform the drag-and-drop operation is determined. The spring-loaded portal is expanded from a closed position to an open position. A screen snapshot image of the location on the target computer is retrieved and overlaid on the spring-loaded portal. The transferring of data from the source computer to the location on the target computer is executed, wherein the location on the target computer is previewable at the source computer through the spring-loaded portal. Whether to abort the transferring of data is determined. The spring-loaded portal is minimized from the open position to the closed position. | 02-14-2013 |
20130116092 | EXERCISE-INTEGRATED WORKSTATION - A method, a computer program product, and a computer system initiate an exercise sequence on an exercise-integrated workstation. A set of active monitored activities is identified. A set of preferences and goals for the exercise sequence is identified. A set of accumulated details regarding any user modifications to previous exercise sequences is identified. A set of scheduled events is identified. Responsive to identifying the set of active monitored activities, the set of preferences and goals, the set of accumulated details, and the set of scheduled events, the method determines whether to initiate an exercise sequence. Responsive to determining to initiate the exercise sequence, the method initiates the exercise sequence. | 05-09-2013 |
20140282072 | DATA SHARING SOFTWARE PROGRAM UTILIZING A DRAG-AND-DROP OPERATION AND SPRING-LOADED PORTAL - Embodiments include a program for transferring of data from a source computer to a location on a target computer utilizing a drag-and-drop operation and a spring-loaded portal. I/O devices are monitored for mouse input that includes coordinates of a mouse pointer. Whether an end-user is utilizing the mouse pointer to perform the drag-and-drop operation is determined. The spring-loaded portal is expanded from a closed position to an open position. A screen snapshot image of the location on the target computer is retrieved and overlaid on the spring-loaded portal. The transferring of data from the source computer to the location on the target computer is executed, wherein the location on the target computer is previewable at the source computer through the spring-loaded portal. Whether to abort the transferring of data is determined. The spring-loaded portal is minimized from the open position to the closed position. | 09-18-2014 |