Patent application number | Description | Published |
20090024296 | SYSTEM AND METHOD FOR ESTIMATING VOLUMETRIC EFFICIENCY FOR ENGINES WITH INTAKE AND EXHAUST CAM PHASERS - An engine control module comprises a table that outputs a parked VE estimate based on an input parameter when intake and exhaust cam phasers of an engine are in a parked position. A calculation module calculates VE estimate when the intake and exhaust cam phasers are not in a parked position based on the parked VE estimate and a mathematical relationship. | 01-22-2009 |
20090076703 | SYSTEMS AND METHODS FOR ESTIMATING RESIDUAL GAS FRACTION FOR INTERNAL COMBUSTION ENGINES USING ALTITUDE COMPENSATION - An engine control system comprises a first factor calculating module that calculates a first factor based on intake cam position (ICAM), exhaust cam position (ECAM), engine speed (RPM) and first calibration factors. A second factor calculating module calculates a second factor based on ICAM, ECAM, RPM and second calibration factors. A residual gas fraction (RGF) estimating module estimates a RGF value based on the first factor adjusted for altitude and said second factor. A method comprises calculating a first factor based on intake cam position (ICAM), exhaust cam position (ECAM), engine speed (RPM) and first calibration factors; calculating a second factor based on ICAM, ECAM, RPM and second calibration factors; and estimating a residual gas fraction (RGF) value based on the first factor adjusted for altitude and said second factor. At least one engine operating parameter is adjusted based on the RGF value. | 03-19-2009 |
20110073085 | CONTROL SYSTEMS AND METHODS USING GEOMETRY BASED EXHAUST MIXING MODEL - A system includes a cylinder equivalence ratio (EQR) module, a location estimation module, a sensor module, and a fuel control module. The cylinder EQR module determines a first EQR corresponding to a first exhaust gas expelled from a first cylinder and determines a second EQR corresponding to a second exhaust gas expelled from a second cylinder. The location estimation module determines when the first and second exhaust gases mix in an exhaust manifold to form a third exhaust gas having a third EQR. The sensor module estimates an EQR of a fourth exhaust gas based on the third EQR. The fourth exhaust gas is located at an oxygen sensor in the exhaust manifold. The fuel control module controls an amount of fuel supplied to an engine based on a difference between the estimated EQR and an EQR corresponding to measurements from the oxygen sensor. | 03-31-2011 |
20110073087 | DELAY COMPENSATION SYSTEMS AND METHODS - A steady-state (SS) delay module determines a SS delay period for SS operating conditions based on an air per cylinder. A dynamic compensation module determines a predicted delay period based on first and second dynamic compensation variables for dynamic operating conditions, the SS delay period, a previous predicted delay period. The first dynamic compensation variable corresponds to a period between a first time when fuel is provided for a cylinder of an engine and a second time when exhaust gas resulting from combustion of the fuel and air is expelled from the cylinder. The SS and predicted delay periods correspond to a period between the first time and a third time when the exhaust gas reaches an exhaust gas oxygen sensor located upstream of a catalyst. A final equivalence ratio module adjusts fuel provided to the cylinder after the third time based on the predicted delay period. | 03-31-2011 |
20110073089 | FUEL CONTROL SYSTEM AND METHOD FOR MORE ACCURATE RESPONSE TO FEEDBACK FROM AN EXHAUST SYSTEM WITH AN AIR/FUEL EQUIVALENCE RATIO OFFSET - An engine control system includes a saturation determination module, an adjustment factor generation module, and a fuel control module. The saturation determination module determines when a first exhaust gas oxygen (EGO) sensor is saturated, wherein the first EGO sensor is located upstream from a catalyst. The adjustment factor generation module generates an adjustment factor for an integral gain of a fuel control module when the first EGO sensor is saturated. The fuel control module adjusts a fuel command for an engine based on differences between expected and measured amounts of oxygen in exhaust gas produced by the engine, a proportional gain, the integral gain, and the integral gain adjustment factor. | 03-31-2011 |
20110077844 | DELAY CALIBRATION SYSTEMS AND METHODS - A calibration method comprises: determining a steady-state (SS) delay period from a first mapping of SS delay period indexed by air per cylinder (APC); determining a predicted delay period based on first and second dynamic compensation variables; outputting a theoretical delay period based on a calibration APC; determining the theoretical delay period from a second mapping of theoretical delay period indexed by APC; generating the calibration APC; populating the first mapping based on the theoretical delay and the calibration APC; determining the first and second dynamic compensation variables based on comparisons of the theoretical delay and the SS delay period; and selectively adjusting an amount of fuel provided to the cylinder based on the predicted delay period. | 03-31-2011 |
20110077845 | FUEL CONTROL SYSTEM AND METHOD FOR IMPROVED RESPONSE TO FEEDBACK FROM AN EXHAUST SYSTEM - An engine control system includes a proportional correction module and a variable proportional gain determination module. The proportional correction module generates a proportional correction for a fuel command to an engine based on a variable proportional gain and a difference between expected and measured amounts of oxygen in exhaust gas produced by the engine. The variable proportional gain determination module determines the variable proportional gain based on a nominal gain and an amount of time since a polarity of the difference has changed, wherein the nominal gain is based on engine operating parameters. | 03-31-2011 |
Patent application number | Description | Published |
20130237306 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine includes a display for displaying a first array of game symbols for playing a game and two or more second arrays of game enhancing elements, said second arrays being associated with columns of said first array. In response to a trigger event occurring in the columns, the second arrays each randomly award one or more game enhancing elements. A gaming method is also provided. | 09-12-2013 |
20130274011 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine includes a display and an electronic game controller. Two or more first game arrays are played substantially simultaneously. A second array of game enhancing elements is linked to first game arrays selected by the player and is triggered during play of the first game arrays so that the second array awards one or more of the game enhancing elements that modify the games played on the selected first game arrays. A gaming method is also provided. | 10-17-2013 |
20130310149 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine includes a display and an electronic game controller. A first game, second game and third game are playable on the display, the second game being triggered during play of the first game and the third game being triggered during play of the second game. A player must make an additional wager to play one of the second and third games and does not need to make a further bet to play the other of the second and third games. A gaming method is also provided. | 11-21-2013 |
20140038690 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine has an electronic game controller and a display where game symbols are arranged in an array of predetermined groups, at least one of the groups displaying at least one special symbol in a first play of the game and a subsequent play. In the first play, the electronic game controller selects a first group to display the at least one special symbol and in the subsequent play, the electronic game controller selects a different group to the first group to display the at least one special symbol. A gaming method is also provided. | 02-06-2014 |
20140051496 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine has special symbols associated with numerical values appearing on a display in a game are associated with predetermined portions of an array for subsequent plays of the game. Predetermined winning combinations including a designated game symbol in one of the predetermined portions may increase the value of the prize by the numerical value associated with the special symbol. Where two special symbols appear in the same predetermined portion, the prize value may increase by a combination of the numerical values associated with the special symbols. Gaming methods are also provided. | 02-20-2014 |
20140141857 | Electronic Gaming Machine and Gaming Method - In an aspect, an electronic gaming machine includes an electronic game controller and a display for playing a plurality of games that are selectable for simultaneous play. Where one or more special symbols appear in a first game of the selected games, the electronic game controller applies one or more game enhancing elements that are associated with the special symbols to each of the selected games. In another aspect, the special symbols are associated with numerical values that are applied to each of the selected games. Gaming methods are also provided. | 05-22-2014 |
20140141860 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine includes an electronic game controller and a display where game symbols are arranged in an array of predetermined game positions. The appearance of at least one special symbol in a first play of a game causes the electronic game controller to increase the value of a prize awarded for a predetermined winning combination, the increase being associated with a numerical value associated with the special symbol. Also, the numerical value associated with the special symbol sequentially increases for one or more subsequent plays of the game. A gaming method is also provided. | 05-22-2014 |
20140148243 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine has an electronic game controller and a display where game symbols are arranged in an array of predetermined groups, at least one of the groups displaying at least one special symbol in a first play of the game and a subsequent play. In the first play, the electronic game controller selects a first group to display the at least one special symbol and in the subsequent play, the electronic game controller selects a different group to the first group to display the at least one special symbol. A gaming method is also provided. | 05-29-2014 |
20140235319 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine includes an electronic game controller and a display where game symbols are arranged in an array of predetermined game positions. The appearance of a first special symbol causes a group of predetermined game positions to be selected where each game symbol occupying a predetermined game position in the group is changed into a second special symbol either during a play of a game or at the completion of the play, the change into the second special symbol being visible to the player. A gaming method is also provided. | 08-21-2014 |
20140274285 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine has an electronic game controller and a display where game symbols are arranged in an array, where R is the number of available predetermined game positions in the array. The electronic game controller determines the appearance of a group of special symbols in the predetermined game positions, the group affecting the outcome of the game, and the probability of the group appearing on the array is less than 1 in X, X being the average number of games played with R predetermined game positions. A gaming method is also provided. | 09-18-2014 |
20140302909 | ELECTRONIC GAMING MACHINE AND GAMING METHOD - An electronic gaming machine includes a display for displaying a game and a wheel-type game. The wheel-type game comprises a plurality of wheels, said wheels having different wheel elements. An electronic game controller controls the display of game symbols and wheel elements in said game and said wheel-type game. The electronic game controller configures the electronic gaming machine to provide a plurality of selectable bet options to play said game. The electronic game controller also associates each of said bet options with one of said wheels such that selection of a first bet option to play said game causes said electronic game controller to select the wheel associated with said first bet option. | 10-09-2014 |
20140309013 | ELECTRONIC GAMING MACHINE AND GAMING METHOD - The invention provides an electronic gaming machine comprising an electronic game controller and a display. A game is shown on the display, comprising game symbols displayed in predetermined game positions on said display and where predetermined winning combinations of randomly selected game symbols in the game award prizes to a player. The appearance of at least one special symbol in a play of the game causes the display of an additional special symbol for one or more subsequent plays of the game. A corresponding method is also provided. | 10-16-2014 |
20140349737 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine has an electronic game controller and a display where game symbols are arranged in an array of predetermined game positions. The appearance of a first special symbol causes a group of predetermined game positions to be selected where each game symbol occupying a predetermined game position in said group is changed into a second special symbol either during a play of a game or at the completion of said play, said change into said second special symbol being visible to said player. A gaming method is also provided. | 11-27-2014 |
20150018070 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine includes a display for displaying a game including game symbols arranged into an array of predetermined game positions. An electronic game controller designates at least one of the predetermined game positions as a special game position in the array such that a special symbol appearing in the special game position in a play of the game causes the electronic game controller to award a game enhancing element to the player. The special game position is visually indicated on the array to the player during the play by a graphical element associated with the special game position. A gaming method is also provided. | 01-15-2015 |
20150038213 | ELECTRONIC GAMING MACHINE AND METHOD - An electronic gaming machine includes a display for displaying a game and an electronic game controller for controlling the display of game symbols for the game on the display. The game includes game symbols arranged into an array of predetermined symbol positions to define a plurality of reels. The electronic game controller causes the game symbols in a first of the reels to visually move in a linear path on the display and the game symbols in a second of the reels to visually move in a non-linear path on the display. | 02-05-2015 |
20150111632 | Electronic Gaming Machine and Gaming Method - An electronic gaming machine includes a housing having a display for displaying a game, an electronic game controller and an input means in electronic communication with said electronic game controller for receiving commands from a player to operate said electronic gaming machine. The game comprises predetermined winning combinations of randomly selected game symbols that award prizes to a player and a plurality of bet levels for the game, the bet levels comprising at least a default bet level. The electronic game controller enables selection of one of the bet levels via said input means and in response to a selected bet level different to the default bet level, the electronic game controller changes a bonus prize associated with the game. A gaming method is also provided. | 04-23-2015 |
20150221176 | ELECTRONIC GAMING MACHINE AND GAMING METHOD - An electronic gaming machine has a display and an electronic game controller for displaying a game of chance, where at least a first betting option and a second betting option are selectable by a player. Each betting option has a respective unique bet value associated with participation in the game. At least one win multiplier value is randomly determined from a plurality of predetermined win multiplier values. At least one winning event is associated with a winning combination, wherein the player receives a prize calculated by the randomly determined win multiplier value multiplied by a predetermined prize award associated with the winning combination. A theoretical average multiplier value associated with the first betting option is different to a theoretical average win multiplier value associated with the second betting option. Alternatively, the randomly determined win multiplier value is varied based on the selected betting option. A gaming method is also provided. | 08-06-2015 |