# US 2014/0155222 A1 · System and method for learning a transferring torque for hybrid vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155222 A1 - Document ID: US20140155222A1 - Status: Published application - Kind: A1 - Application number: 13/972,459 - Filed: 2013-08-21 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Kia Motors Corporation; Hyundai Motor Company - Inventors: Sang Joon Kim - Web page: https://patentgrep.com/patent/US20140155222A1 ## CPC - B60W 20/15: Control strategies specially adapted for achieving a particular effect - B60K 6/442: Series-parallel switching type - B60W 10/02: including control of driveline clutches - B60W 20/13: in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion - F16D 48/06: Control by electric or electronic means, e.g. of fluid pressure - B60W 2510/0275: Clutch torque - F16D 2500/1066: Hybrid - F16D 2500/50236: Adaptations of the clutch characteristics, e.g. curve clutch capacity torque - clutch actuator displacement - F16D 2500/70605: Adaptive correction; Modifying control system parameters, e.g. gains, constants, look-up tables - Y02T 10/62: Hybrid vehicles - Y10S 903/907: Electricity storage, e.g. battery, capacitor - 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 - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A system and method for learning a transferring torque for a hybrid vehicle includes: an engine and a motor connected through a clutch; a Hybrid Starter Generator (HSG) that is connected to the engine and is used to start the engine; and a controller for transferring a charging power by the motor to the HSG in a case where the charging power by the motor is greater than or equal to a chargeable power of the battery when the transferring torque is learned through the clutch. ## Claims ### Claim 1 A system for learning a transferring torque for a hybrid vehicle, comprising: an engine and a motor connected through a clutch; a Hybrid Starter and Generator (HSG) that is connected to the engine and is used to start the engine; and a controller for transferring a charging power by the motor to the HSG in a case where the charging power by the motor is greater than or equal to a chargeable power of a battery when the transferring torque is learned through the clutch. ### Claim 2 (depends on 1) The system for learning a transferring torque for a hybrid vehicle of claim 1, wherein the controller controls the battery to be charged through the charging power by the motor in a case where the charging power by the motor is greater than the chargeable power of the battery. ### Claim 3 (depends on 1) The system for learning a transferring torque for a hybrid vehicle of claim 1, wherein the controller controls the engine and the motor to keep the rpms thereof substantially constant, wherein the rpm of the engine is greater than that of the motor. ### Claim 4 (depends on 1) The system for learning a transferring torque for a hybrid vehicle of claim 1, wherein the controller controls a remaining amount of the charging power by the motor by deducting the chargeable power of the battery to be transferred to the HSG in a case where the charging power by the motor is greater than or equal to the chargeable power of the battery. ### Claim 5 (depends on 1) The system for learning a transferring torque for a hybrid vehicle of claim 1, wherein the controller controls a remaining amount of the charging power by the motor by deducting the power consumed by the electronic device to be transferred to the HSG in a case where the charging power by the motor is greater than or equal to the chargeable power of the battery. ### Claim 6 (depends on 1) The system for learning a transferring torque for a hybrid vehicle of claim 1, wherein the controller controls a remaining amount of the charging power by the motor by deducting the chargeable power of the battery and the power consumed by the electronic device to be transferred to the HSG in a case where the charging power by the motor is greater than or to the chargeable power of the battery. ### Claim 7 (depends on 1) The system for learning a transferring torque for a hybrid vehicle of claim 1, wherein the controller measures a freeload torque for driving the motor at a constant rpm in a state of the clutch being not connected and measures a load torque for driving the motor at a constant rpm in a state of the clutch being connected, wherein a transferring torque is estimated through the difference of the freeload torque and the load torques, and the transferring torque that is prepared in advance is corrected through the transferring torque. ### Claim 8 A method for learning a transferring torque for a hybrid vehicle, comprising beginning to learn the transferring torque through a clutch; comparing a charging power by a motor to a chargeable power of a battery; consuming the charging power by transferring the charging power by the motor to a Hybrid Starter and Generator (HSG) in a case where the charging power by the motor is greater than or equal to the chargeable power of the battery; and charging the charging power by transferring the charging power by the motor to the battery in a case where the charging power by the motor is less than the chargeable power of the battery. ### Claim 9 A hybrid vehicle, comprising: an engine and a motor connected through a clutch; a Hybrid Starter and Generator (HSG) that is connected to the engine and is used to start the engine; and a controller for transferring a charging power by the motor to the HSG in a case where the charging power by the motor is greater than or equal to a chargeable power of the battery when the transferring torque is learned through the clutch. ### Claim 10 (depends on 9) The hybrid vehicle of claim 9, wherein the controller controls the battery to be charged through the charging power by the motor in a case where the charging power by the motor is greater than the chargeable power of the battery. ### Claim 11 (depends on 9) The hybrid vehicle of claim 9, wherein the controller controls the engine and the motor to keep the rpms thereof substantially constant, wherein the rpm of the engine is greater than that of the motor. ### Claim 12 (depends on 9) The hybrid vehicle of claim 9, wherein the controller controls a remaining amount of the charging power by the motor by deducting the chargeable power of the battery to be transferred to the HSG in a case where the charging power by the motor is greater than or equal to the chargeable power of the battery.