# US 11,440,525 B2 · Method and device for setting an idling speed of an internal combustion engine of a motor vehicle and motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,525 B2 - Document ID: US11440525B2 - Status: Granted - Kind: B2 - Application number: 16/469,303 - Filed: 2017-11-21 - Published: 2020-04-02 - Granted: 2022-09-13 - Earliest claimed: 2016-12-15 - Assignees: Audi AG - Applicants: Audi AG - Inventors: Michael Vogt - Web page: https://patentgrep.com/patent/US11440525B2 ## CPC - B60W 10/06: including control of combustion engines - B60K 28/10: responsive to conditions relating to the vehicle - B60W 10/02: including control of driveline clutches - B60W 10/024: {including control of torque converters} - B60W 10/08: including control of electric propulsion units, e.g. motors or generators - B60W 10/115: with planetary gears - B60W 10/184: with wheel brakes - B60W 30/18109: {Braking} - B60W 20/00: Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)} - B60W 30/1884: {Avoiding stall or overspeed of the engine} - B60W 30/1886: {Controlling power supply to auxiliary devices} - B60W 2710/025: Clutch slip, i.e. difference between input and output speeds - B60W 2710/0644: Engine speed - B60W 2710/065: Idle condition - B60W 2710/083: Torque - B60W 2710/1011: Input shaft speed, e.g. turbine speed - F02D 41/022: {in relation with the clutch status} - F02D 41/083: {taking into account engine load variation, e.g. air-conditionning} - F02D 2200/1006: Engine torque losses, e.g. friction or pumping losses or losses caused by external loads of accessories - F02D 2250/24: by using an external load, e.g. a generator - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - 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) ## Abstract A method for setting an idling speed of an internal combustion engine of a motor vehicle, in which the idling speed of the internal combustion engine is increased if a predetermined power request within an on-board power system of the motor vehicle is detected, wherein a generator for electrically supplying the on-board power system is driven by the internal combustion engine, and wherein the internal combustion engine is connected to a transmission of the motor vehicle, wherein the connection between the internal combustion engine and the transmission is disconnected, and/or a predetermined braking force is made available by means of at least one brake of the motor vehicle if the predetermined power request is detected. ## Claims ### Claim 1 A method for setting an idling speed of an internal combustion engine of a motor vehicle, comprising: detecting a predetermined power request within an on-board power system of the motor vehicle; increasing the idling speed of the internal combustion engine wherein a generator for electrically supplying the on-board power system is driven by means of the internal combustion engine, and wherein the internal combustion engine is connected to a transmission of the motor vehicle, disconnecting the connection between the internal combustion engine and the transmission and providing a predetermined braking force by means of at least one brake of the motor vehicle if the predetermined power request is detected, and wherein the predetermined power request is determined as a function of a gradient of a torque to be provided by the internal combustion engine. ### Claim 2 (depends on 1) The method according to claim 1, further comprising performing an additional check if an emergency mode situation applies in which transfer of electric power from a high-voltage storage device and/or a medium-voltage storage device of the motor vehicle to a high-voltage on-board power system and/or a medium-voltage on-board power system of the motor vehicle does not occur. ### Claim 3 (depends on 2) The method according to claim 2, wherein disconnecting the connection between the internal combustion engine and the transmission and providing the predetermined braking force are performed in parallel. ### Claim 4 (depends on 2) The method according to claim 2, wherein disconnecting the connection between the internal combustion engine and the transmission occurs before providing the predetermined braking force. ### Claim 5 (depends on 2) The method according to claim 2, further comprising increasing the idling speed if the connection between the internal combustion engine and the transmission is disconnected and/or the predetermined braking force is provided. ### Claim 6 (depends on 1) The method according to claim 1, wherein disconnecting the connection between the internal combustion engine and the transmission and providing the predetermined braking force are performed in parallel. ### Claim 7 (depends on 6) The method according to claim 6, further comprising increasing the idling speed if the connection between the internal combustion engine and the transmission is disconnected and the predetermined braking force is provided. ### Claim 8 (depends on 1) The method according to claim 1, wherein disconnecting the connection between the internal combustion engine and the transmission occurs before providing the predetermined braking force. ### Claim 9 (depends on 8) The method according to claim 8, further comprising increasing the idling speed if the connection between the internal combustion engine and the transmission is disconnected and the predetermined braking force is provided. ### Claim 10 (depends on 1) The method according to claim 1, further comprising increasing the idling speed if the connection between the internal combustion engine and the transmission is disconnected and/or the predetermined braking force is provided. ### Claim 11 (depends on 1) The method according to claim 1, wherein the method is performed if the transmission is in a driving gear for forward or reverse driving. ### Claim 12 A device for setting an idling speed of an internal combustion engine of a motor vehicle, wherein a generator for electrically supplying an on-board power system of the motor vehicle is driven by means of the internal combustion engine, and wherein the internal combustion engine is connected to a transmission of the motor vehicle, having a detection means for detecting a predetermined power request within the on-board power system and having a control means for increasing the idling speed of the internal combustion engine if the detection means detects the predetermined power request, wherein the control means is adapted to output a control signal for disconnecting the connection between the internal combustion engine and the transmission and/or for providing a predetermined braking force by means of at least one brake of the motor vehicle if the predetermined power request is detected, wherein that the predetermined power request is determined as a function of a gradient of a torque to be provided by the internal combustion engine. ### Claim 13 (depends on 12) A motor vehicle having a device according to claim 12, an internal combustion engine, a generator, an on-board power system, and a transmission. ### Claim 14 (depends on 13) The motor vehicle according to claim 13, wherein the transmission is configured as an automatic transmission.