# US 9,435,289 B2 · Systems and methods for minimizing throughput > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,289 B2 - Document ID: US9435289B2 - Status: Granted - Kind: B2 - Application number: 14/242,001 - Filed: 2014-04-01 - Published: 2015-10-01 - Granted: 2016-09-06 - Earliest claimed: 2014-04-01 - Assignees: GM Global Technology Operations LLC - Applicants: GM Global Technology Operations LLC - Inventors: Jonathan T. Shibata; Michael J. Lucido - Web page: https://patentgrep.com/patent/US9435289B2 ## CPC - F02D 41/3809: {Common rail control systems (common rail apparatus F02M55/025, F02M63/0225)} - F02D 41/20: Output circuits, e.g. for controlling currents in command coils - F02M 51/061: {using electromagnetic operating means} - F02D 41/04: Introducing corrections for particular operating conditions (F02D41/14 takes precedence) - F02D 2041/2051: {using voltage control} - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF ## Abstract A voltage measuring module measures first and second voltages at first and second electrical connectors of a fuel injector of an engine. A first summer module determines a first sum of (i) a difference between the first and second voltages and (ii) N previous values of the difference between the first and second voltages, wherein N is an integer greater than or equal to one. A second summer module determines a second sum of (i) the first sum and (ii) M previous values of the first sum, wherein M is an integer greater than or equal to one. A first difference module determines a first difference based on the second sum. A second difference module determines a second difference between (i) the first difference and (ii) a previous value of the first difference. An injector driver module selectively applies power to the fuel injector based on the second difference. ## Claims ### Claim 1 A fuel control system for a vehicle, comprising: a voltage measuring module that measures first and second voltages at first and second electrical connectors of a fuel injector of an engine; a first summer module that determines a first sum of (i) a difference between the first and second voltages and (ii) N previous values of the difference between the first and second voltages, wherein N is an integer greater than or equal to one; a second summer module that determines a second sum of (i) the first sum and (ii) M previous values of the first sum, wherein M is an integer greater than or equal to one; a first difference module that determines a first difference based on the second sum; a second difference module that determines a second difference between (i) the first difference and (ii) a previous value of the first difference; and an injector driver module that selectively applies power to the fuel injector based on the second difference. ### Claim 2 (depends on 1) The fuel control system of claim 1 further comprising: a third difference module that determines a third difference between (i) the second difference and (ii) a previous value of the second difference; and a fourth difference module that determines a fourth difference between (i) the third difference and (ii) a previous value of the third difference, wherein the injector driver module selectively applies power to the fuel injector based on the third difference and the fourth difference. ### Claim 3 (depends on 2) The fuel control system of claim 2 further comprising: a third summer module that determines a third sum of (i) the second sum and (ii) O previous values of the second sum, wherein O is an integer greater than or equal to one, wherein the first difference module determines the first difference based on the third sum. ### Claim 4 (depends on 3) The fuel control system of claim 3 further comprising: a fourth summer module that determines a fourth sum of (i) the third sum and (ii) Q previous values of the third sum, wherein Q is an integer greater than or equal to one, wherein the first difference module determines the first difference based on the fourth sum. ### Claim 5 (depends on 4) The fuel control system of claim 4 further comprising: a fifth summer module that determines a fifth sum of (i) the fourth sum and (ii) R previous values of the fourth sum, wherein R is an integer greater than or equal to one, wherein the first difference module determines the first difference based on the fifth sum. ### Claim 6 (depends on 5) The fuel control system of claim 5 wherein the first difference module determines the first difference between (i) the fifth sum and (ii) a previous value of the fifth sum. ### Claim 7 (depends on 2) The fuel control system of claim 2 further comprising a parameter determination module that determines a minimum value of the third difference and a maximum value of the third difference, wherein the injector driver module selectively applies power to the fuel injector based on the minimum and maximum values of the third difference. ### Claim 8 (depends on 7) The fuel control system of claim 7 wherein the parameter determination module determines the minimum value of the third difference based on a first zero-crossing of the fourth difference. ### Claim 9 (depends on 8) The fuel control system of claim 8 wherein the parameter determination module determines the maximum value of the third difference based on a second zero-crossing of the fourth difference. ### Claim 10 (depends on 7) The fuel control system of claim 7 further comprising: a pulse width module that determines an initial pulse width to apply to the fuel injector for a fuel injection event based on a target mass of fuel; and an adjustment module that adjusts initial pulse width based on the minimum and maximum values of the third difference to produce a final pulse width, wherein the injector driver module selectively applies power to the fuel injector for the fuel injection event based on the final pulse width. ### Claim 11 A control system for a vehicle, comprising: a voltage measuring module that measures first and second voltages at first and second electrical connectors of an actuator of the vehicle; a first summer module that determines a first sum of (i) a difference between the first and second voltages and (ii) N previous values of the difference between the first and second voltages, wherein N is an integer greater than or equal to one; a second summer module that determines a second sum of (i) the first sum and (ii) M previous values of the first sum, wherein M is an integer greater than or equal to one; a first difference module that determines a first difference based on the second sum; a second difference module that determines a second difference between (i) the first difference and (ii) a previous value of the first difference; and a driver module that selectively applies power to the actuator based on the second difference. ### Claim 12 A fuel control method for a vehicle, comprising: measuring first and second voltages at first and second electrical connectors of a fuel injector of an engine; determining a first sum of (i) a difference between the first and second voltages and (ii) N previous values of the difference between the first and second voltages, wherein N is an integer greater than or equal to one; determining a second sum of (i) the first sum and (ii) M previous values of the first sum, wherein M is an integer greater than or equal to one; determining a first difference based on the second sum; determining a second difference between (i) the first difference and (ii) a previous value of the first difference; and selectively applying power to the fuel injector based on the second difference. ### Claim 13 (depends on 12) The fuel control method of claim 12 further comprising: determining a third difference between (i) the second difference and (ii) a previous value of the second difference; determining a fourth difference between (i) the third difference and (ii) a previous value of the third difference; and selectively applying power to the fuel injector based on the third difference and the fourth difference. ### Claim 14 (depends on 13) The fuel control method of claim 13 further comprising: determining a third sum of (i) the second sum and (ii) O previous values of the second sum, wherein O is an integer greater than or equal to one; and determining the first difference based on the third sum. ### Claim 15 (depends on 14) The fuel control method of claim 14 further comprising: determining a fourth sum of (i) the third sum and (ii) Q previous values of the third sum, wherein Q is an integer greater than or equal to one; and determining the first difference based on the fourth sum. ### Claim 16 (depends on 15) The fuel control method of claim 15 further comprising: determining a fifth sum of (i) the fourth sum and (ii) R previous values of the fourth sum, wherein R is an integer greater than or equal to one; and determining the first difference based on the fifth sum. ### Claim 17 (depends on 16) The fuel control method of claim 16 further comprising determining the first difference between (i) the fifth sum and (ii) a previous value of the fifth sum. ### Claim 18 (depends on 13) The fuel control method of claim 13 further comprising: determining a minimum value of the third difference and a maximum value of the third difference; and selectively applying power to the fuel injector based on the minimum and maximum values of the third difference. ### Claim 19 (depends on 18) The fuel control method of claim 18 further comprising determining the minimum value of the third difference based on a first zero-crossing of the fourth difference. ### Claim 20 (depends on 19) The fuel control method of claim 19 further comprising determining the maximum value of the third difference based on a second zero-crossing of the fourth difference. ### Claim 21 (depends on 18) The fuel control method of claim 18 further comprising: determining an initial pulse width to apply to the fuel injector for a fuel injection event based on a target mass of fuel; adjusting initial pulse width based on the minimum and maximum values of the third difference to produce a final pulse width; and selectively applying power to the fuel injector for the fuel injection event based on the final pulse width.