# US 2018/0023639 A1 · Vehicle controlling device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0023639 A1 - Document ID: US20180023639A1 - Status: Published application - Kind: A1 - Application number: 15/547,183 - Filed: 2015-12-16 - Published: 2018-01-25 - Earliest claimed: 2015-01-30 - Assignees: JATCO Ltd; Nissan Motor Co., Ltd. - Applicants: JATCO Ltd; Nissan Motor Co., Ltd. - Inventors: Kenji HATTORI; Kouichi KOTSUJI - Web page: https://patentgrep.com/patent/US20180023639A1 ## CPC - F16D 48/06: Control by electric or electronic means, e.g. of fluid pressure - B60K 6/387: Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means - B60L 15/20: for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed - B60W 20/50: Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode - F16H 61/04: Smoothing ratio shift - B60W 2050/0083: {Setting, resetting, calibration} - B60W 2510/0275: Clutch torque - B60W 2510/0291: Clutch temperature - B60W 2510/083: Torque - B60W 2510/101: Transmission neutral state - B60Y 2200/92: Hybrid vehicles - B60Y 2400/406: Hydraulic actuators - B60Y 2400/424: Friction clutches - F16D 2500/30404: Clutch temperature - Y02T 10/72: Electric energy management in electromobility - Y10S 903/914: Actuated, e.g. engaged or disengaged by electrical, hydraulic or mechanical means - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - 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 - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - 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 - F16H: GEARING - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A vehicle controlling device has a frictional engagement element provided between a drive motor and a driving wheel; a shifting unit capable of selecting a travel range or a non-travel range; first obtaining unit configured to, during selection of the travel range, obtain a first parameter including at least a first motor torque value that is a torque value of the drive motor; second obtaining unit configured to, during selection of the non-travel range, obtain a second parameter including at least a second motor torque value that is a torque value of the drive motor; and operating unit configured to, on the basis of the first and second parameters, calculate a zero point hydraulic pressure command value at which the frictional engagement element starts to generate a torque capacity. It is therefore possible to detect a zero point of a clutch between the drive motor and the driving wheel. ## Claims ### Claim 1 A vehicle controlling device comprising: a frictional engagement element provided between a drive motor and a driving wheel; a shifting unit capable of selecting a travel range or a non-travel range; a first obtaining unit configured to, during selection of the travel range, obtain a first parameter including at least a first motor torque value that is a torque value of the drive motor; a second obtaining unit configured to, during selection of the non-travel range, obtain a second parameter including at least a second motor torque value that is a torque value of the drive motor; and an operating unit configured to, on the basis of the first and second parameters, calculate a zero point hydraulic pressure command value at which the frictional engagement element starts to generate a torque capacity. ### Claim 2 (depends on 1) The vehicle controlling device as claimed in claim 1, wherein: the first obtaining unit is configured to obtain, as the first parameter, the first motor torque value when the frictional engagement element is slip-controlled and a hydraulic pressure command value for the frictional engagement element when the first motor torque value is obtained, and the second obtaining unit configured to obtain, as the second parameter, the second motor torque value when the frictional engagement element is disengaged. ### Claim 3 (depends on 1) The vehicle controlling device as claimed in claim 1, wherein: the first obtaining unit is configured to obtain, as the first parameter, a first temperature value when the first motor torque value is obtained, the second obtaining unit configured to obtain, as the second parameter, a second temperature value when the second motor torque value is obtained, and the operating unit is configured to, when the second temperature value is different from the first temperature value, correct the second motor torque value on the basis of a difference between the second temperature value and the first temperature value, and calculate the zero point hydraulic pressure command value on the basis of the corrected second motor torque value.