# US 12,110,940 B1 · Vibration mitigation in vehicle using gear clutch control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,110,940 B1 - Document ID: US12110940B1 - Status: Granted - Kind: B1 - Application number: 18/488,226 - Filed: 2023-10-17 - Granted: 2024-10-08 - Earliest claimed: 2023-10-17 - Assignees: Fca US LLC - Applicants: Fca US LLC - Inventors: William R Mayhew - Web page: https://patentgrep.com/patent/US12110940B1 ## CPC - F16F 15/129: characterised by friction-damping means ({F16F15/1202, F16F15/1238} , F16F15/131 take precedence) - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract A vehicle system for reducing vibrations on a vehicle includes an engine connected to an automatic transmission through a turbine of a torque converter clutch. A gearset is associated with the transmission and includes a sun gear, a ring gear and a pinion carrier. A gear clutch has a first clutch component fixed to a case of the transmission and a second clutch component fixed to the gearset. The first and second clutch components are configured to slip based on an enable condition being satisfied thereby mitigating vibrational modes experienced within the vehicle system. ## Claims ### Claim 1 A vehicle system for reducing vibrations on a vehicle, the vehicle system comprising: an engine connected to an automatic transmission through a turbine and a torque converter clutch; a gearset associated with the transmission and having a sun gear, a ring gear and a pinion carrier; and a gear clutch having a first clutch component fixed to a case of the transmission and a second clutch component fixed to the ring gear of the gearset, wherein the first and second clutch components are configured to slip based on an enable condition being satisfied thereby mitigating vibrational modes experienced within the vehicle system. ### Claim 2 (depends on 1) The vehicle system of claim 1, wherein the enable condition is based at least partially on a torque of the turbine. ### Claim 3 (depends on 2) The vehicle system of claim 2, wherein the enable condition is further based at least partially on a speed of the turbine. ### Claim 4 (depends on 2) The vehicle system of claim 2, further comprising a selected slip module that determines a selected slip and an actual slip module that determines an actual slip, wherein a slip error is determined based on a comparison of the selected slip and the actual slip. ### Claim 5 (depends on 4) The vehicle system of claim 4, wherein a clutch pressure of the gear clutch is based on the slip error. ### Claim 6 (depends on 5) The vehicle system of claim 5, wherein the clutch pressure of the gear clutch is based on a torque of the turbine. ### Claim 7 (depends on 1) The vehicle system of claim 1, wherein a mass of the vehicle acts on the gearset causing a rotational inertia onto the gearset. ### Claim 8 A method of reducing vibrations on a vehicle, the method comprising: providing an engine connected to an automatic transmission through a turbine and a torque converter clutch; a gearset associated with the transmission and having a sun gear, a ring gear and a pinion carrier; and a gear clutch having a first clutch component fixed to a case of the transmission and a second clutch component fixed to the gearset; and initiating relative movement between the first clutch component and the second clutch component based on a revolutions per minute of the turbine, wherein the relative movement between the first clutch component and the second clutch component mitigates vibrational modes experienced on the vehicle. ### Claim 9 (depends on 8) The method of claim 8, further comprising: determining whether enable conditions are met, the enable conditions comprising a torque of the turbine. ### Claim 10 (depends on 9) The method of claim 9, further comprising: determining, at a selected slip module, a selected slip; determining, at an actual slip module, an actual slip; and determining a slip error based on a comparison between the selected slip and the actual slip. ### Claim 11 (depends on 10) The method of claim 10, further comprising: determining a clutch pressure of the gear clutch based on the slip error. ### Claim 12 (depends on 11) The method of claim 11, wherein determining the clutch pressure of the gear clutch is further based on a torque of the turbine. ### Claim 13 A vehicle system for reducing vibrations on a vehicle, the vehicle system comprising: an engine connected to an automatic transmission through a turbine and a torque converter clutch; a gearset associated with the transmission and having a sun gear, a ring gear and a pinion carrier, wherein a mass of the vehicle acts on the gearset causing a rotational inertia onto the gearset; and a gear clutch having a first clutch component fixed to a case of the transmission and a second clutch component fixed to the gearset, wherein the first and second clutch components are configured to slip based on an enable condition being satisfied thereby mitigating vibrational modes experienced within the vehicle system. ### Claim 14 (depends on 13) The vehicle system of claim 13, wherein the enable condition is based at least partially on a torque of the turbine. ### Claim 15 (depends on 14) The vehicle system of claim 14, wherein the enable condition is further based at least partially on a speed of the turbine. ### Claim 16 (depends on 14) The vehicle system of claim 14, further comprising a selected slip module that determines a selected slip and an actual slip module that determines an actual slip, wherein a slip error is determined based on a comparison of the selected slip and the actual slip. ### Claim 17 (depends on 16) The vehicle system of claim 16, wherein a clutch pressure of the gear clutch is based on the slip error. ### Claim 18 (depends on 17) The vehicle system of claim 17, wherein the clutch pressure of the gear clutch is based on a torque of the turbine.