# US 2016/0355173 A1 · Control device for vehicle driving device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0355173 A1 - Document ID: US20160355173A1 - Status: Published application - Kind: A1 - Application number: 15/118,282 - Filed: 2015-03-05 - Published: 2016-12-08 - Earliest claimed: 2014-03-05 - Assignees: Aisin Aw Co., Ltd. - Applicants: Aisin Aw Co., Ltd. - Inventors: Yoichi TAJIMA; Kohei TSUDA - Web page: https://patentgrep.com/patent/US20160355173A1 ## CPC - B60W 20/15: Control strategies specially adapted for achieving a particular effect - B60K 6/36: characterised by the transmission gearings - B60K 6/48: Parallel type - B60K 6/547: the transmission being a stepped gearing - B60L 15/2054: {by controlling transmissions or clutches} - B60L 50/16: with provision for separate direct mechanical propulsion - B60W 10/02: including control of driveline clutches - B60W 10/04: including control of propulsion units - B60W 10/06: including control of combustion engines - B60W 10/08: including control of electric propulsion units, e.g. motors or generators - B60W 10/10: including control of change-speed gearings - B60W 10/11: Stepped gearings - B60W 10/115: with planetary gears - B60W 20/00: Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)} - B60W 20/30: Control strategies involving selection of transmission gear ratio {(control of change speed gearings, together with other vehicle sub-units B60W10/10; HEV transmission gearing B60K6/36; gearings and control thereof F16H)} - B60W 30/19: Improvement of gear change, e.g. by synchronisation or smoothing gear shift - F16H 61/0204: {for gearshift control, e.g. control functions for performing shifting or generation of shift signal} - F16H 63/502: {for smoothing gear shifts} - B60K 2006/4825: {Electric machine connected or connectable to gearbox input shaft} - B60L 2210/40: DC to AC converters - B60L 2240/12: Speed - B60L 2240/421: Speed - B60L 2240/423: Torque - B60L 2240/441: Speed - B60L 2240/443: Torque - B60L 2240/486: Operating parameters - B60L 2240/507: Operating parameters - B60W 2510/0638: Engine speed - B60W 2510/1005: Transmission ratio engaged - B60W 2556/00: Input parameters relating to data - B60W 2710/021: Clutch engagement state - B60W 2710/025: Clutch slip, i.e. difference between input and output speeds - B60W 2710/027: Clutch torque - B60W 2710/0644: Engine speed - B60W 2710/081: Speed - B60W 2710/083: Torque - B60W 2710/1005: Transmission ratio engaged - B60W 2710/105: Output torque - B60Y 2200/92: Hybrid vehicles - B60Y 2300/19: Improvement of gear change, e.g. synchronisation or smoothing gear shift - B60Y 2400/72: Continous variable transmissions [CVT] - Y02T 10/62: Hybrid vehicles - Y02T 10/64: Electric machine technologies in electromobility - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 10/72: Electric energy management in electromobility - Y10S 903/93: Conjoint control of different elements - 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 - 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 - 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 control device for a vehicle driving device which controls the vehicle driving device provided with a particular engagement device, a rotary electric machine, and a transmission apparatus disposed in a power transmission path coupling an internal combustion engine with wheels in order from the internal combustion engine side, wherein the transmission apparatus includes a plurality of engagement devices, and selectively forms a plurality of transmission shift stages different in transmission shift ratio according to a state of engagement of the plurality of engagement devices. ## Claims ### Claim 1 A control device for a vehicle driving device which controls the vehicle driving device provided with a particular engagement device, a rotary electric machine, and a transmission apparatus disposed in a power transmission path coupling an internal combustion engine with wheels in order from the internal combustion engine side, wherein the transmission apparatus includes a plurality of engagement devices, and selectively forms a plurality of transmission shift stages different in transmission shift ratio according to a state of engagement of the plurality of engagement devices; the control device comprising: an electronic control unit that includes control logic, which when executed: executes an on upshift control for controlling engagement and release of the plurality of engagement devices to switch the transmission shift stage to a transmission shift stage smaller in the transmission shift ratio from a state in which the particular engagement device transmits a torque in a forward acceleration direction to the wheels in a direct engagement state; and controls the particular engagement device into a slip engagement state, and reduces a rotational speed of the rotary electric machine relative to a rotational speed of the internal combustion engine when decreasing a rotational speed difference between a pair of engagement members of engagement side engagement device which is the engagement device engaged for switching the transmission shift stage during execution of the on upshift control. ### Claim 2 (depends on 1) The control device for a vehicle driving device according to claim 1, wherein the electronic control unit controls both of the engagement side engagement device and the particular engagement device into the slip engagement state when decreasing the rotational speed difference of the engagement side engagement device. ### Claim 3 (depends on 1) The control device for a vehicle driving device according to claim 1, wherein the electronic control unit reduces the output torque of the rotary electric machine, to thereby reduce the rotational speed of the rotary electric machine, and decrease the rotational speed difference of the engagement side engagement device. ### Claim 4 (depends on 1) The control device for a vehicle driving device according to claim 1, wherein the electronic control unit decreases the rotational speed difference between the pair of engagement members of the particular engagement device after decreasing the rotational speed difference of the engagement side engagement device down to a predetermined rotational speed difference. ### Claim 5 (depends on 4) The control device for a vehicle driving device according to claim 4, wherein the electronic control unit decreases the rotational speed difference of the particular engagement device down to zero after decreasing the rotational speed difference of the engagement side engagement device down to zero. ### Claim 6 (depends on 4) The control device for a vehicle driving device according to claim 4, wherein the electronic control unit decreases the rotational speed difference of the particular engagement device down to zero after decreasing the rotational speed difference of the engagement side engagement device down to a target rotational speed difference set to a value larger than zero in advance, and thereafter decreases the rotational speed difference of the engagement side engagement device down to zero. ### Claim 7 (depends on 6) The control device for a vehicle driving device according to claim 6, wherein the electronic control unit executes a rotational speed control for changing the output torque of the rotary electric machine so that the rotational speed difference of the engagement side engagement device is maintained at the target rotational speed difference after decreasing the rotational speed difference of the engagement side engagement device down to the target rotational speed difference. ### Claim 8 (depends on 4) The control device for a vehicle driving device according to claim 4, wherein the electronic control unit maintains the rotational speed of the internal combustion engine at the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while increasing the rotational speed difference of the particular engagement device, and reduces the rotational speed of the internal combustion engine from the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while decreasing the rotational speed difference of the particular engagement device. ### Claim 9 (depends on 4) The control device for a vehicle driving device according to claim 4, wherein the electronic control unit increases a transmission torque capacity of the particular engagement device to decrease the rotational speed difference of the particular engagement device and reduces the output torque of the rotary electric machine according to an increase in the transmission torque capacity of the particular engagement device. ### Claim 10 (depends on 2) The control device for a vehicle driving device according to claim 2, wherein the electronic control unit reduces the output torque of the rotary electric machine, to thereby reduce the rotational speed of the rotary electric machine, and decrease the rotational speed difference of the engagement side engagement device. ### Claim 11 (depends on 2) The control device for a vehicle driving device according to claim 2, wherein the electronic control unit decreases the rotational speed difference between the pair of engagement members of the particular engagement device after decreasing the rotational speed difference of the engagement side engagement device down to a predetermined rotational speed difference. ### Claim 12 (depends on 5) The control device for a vehicle driving device according to claim 5, wherein the electronic control unit maintains the rotational speed of the internal combustion engine at the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while increasing the rotational speed difference of the particular engagement device, and reduces the rotational speed of the internal combustion engine from the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while decreasing the rotational speed difference of the particular engagement device. ### Claim 13 (depends on 5) The control device for a vehicle driving device according to claim 5, wherein the electronic control unit increases a transmission torque capacity of the particular engagement device to decrease the rotational speed difference of the particular engagement device and reduces the output torque of the rotary electric machine according to an increase in the transmission torque capacity of the particular engagement device. ### Claim 14 (depends on 3) The control device for a vehicle driving device according to claim 3, wherein the electronic control unit decreases the rotational speed difference between the pair of engagement members of the particular engagement device after decreasing the rotational speed difference of the engagement side engagement device down to a predetermined rotational speed difference. ### Claim 15 (depends on 6) The control device for a vehicle driving device according to claim 6, wherein the electronic control unit maintains the rotational speed of the internal combustion engine at the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while increasing the rotational speed difference of the particular engagement device, and reduces the rotational speed of the internal combustion engine from the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while decreasing the rotational speed difference of the particular engagement device. ### Claim 16 (depends on 6) The control device for a vehicle driving device according to claim 6, wherein the electronic control unit increases a transmission torque capacity of the particular engagement device to decrease the rotational speed difference of the particular engagement device and reduces the output torque of the rotary electric machine according to an increase in the transmission torque capacity of the particular engagement device. ### Claim 17 (depends on 7) The control device for a vehicle driving device according to claim 7, wherein the electronic control unit maintains the rotational speed of the internal combustion engine at the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while increasing the rotational speed difference of the particular engagement device, and reduces the rotational speed of the internal combustion engine from the rotational speed corresponding to the rotational speed of the internal combustion engine before starting the on upshift control while decreasing the rotational speed difference of the particular engagement device. ### Claim 18 (depends on 12) The control device for a vehicle driving device according to claim 12, wherein the electronic control unit increases a transmission torque capacity of the particular engagement device to decrease the rotational speed difference of the particular engagement device and reduces the output torque of the rotary electric machine according to an increase in the transmission torque capacity of the particular engagement device. ### Claim 19 (depends on 10) The control device for a vehicle driving device according to claim 10, wherein the electronic control unit decreases the rotational speed difference between the pair of engagement members of the particular engagement device after decreasing the rotational speed difference of the engagement side engagement device down to a predetermined rotational speed difference. ### Claim 20 (depends on 19) The control device for a vehicle driving device according to claim 19, wherein the electronic control unit decreases the rotational speed difference of the particular engagement device down to zero after decreasing the rotational speed difference of the engagement side engagement device down to zero.