# US 8,751,120 B2 · Driving control system for vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,751,120 B2 - Document ID: US8751120B2 - Status: Granted - Kind: B2 - Application number: 13/712,601 - Filed: 2012-12-12 - Published: 2013-06-27 - Granted: 2014-06-10 - Earliest claimed: 2011-12-21 - Assignees: Toyota Jidosha Kabushiki - Applicants: Yuki Minase; Masashi Takagi; Motonari Ohbayashi; Hiroshi Shimada; Toshihiro Takagi - Inventors: Yuki Minase; Masashi Takagi; Motonari Ohbayashi; Hiroshi Shimada; Toshihiro Takagi - Web page: https://patentgrep.com/patent/US8751120B2 ## CPC - B60W 10/10: including control of change-speed gearings - B60W 10/04: including control of propulsion units - B60W 10/11: Stepped gearings - B60W 30/1846: {Preventing of breakage of drive line components, e.g. parts of the gearing} - F16H 61/12: Detecting malfunction or potential malfunction, e.g. fail safe (in control of hydrostatic gearing F16H61/4192) {; Circumventing or fixing failures} - F16H 63/50: Signals to an engine or motor - B60W 10/06: including control of combustion engines - B60W 2540/16: Ratio selector position - B60W 2540/165: Rate of change - B60W 2710/0666: Engine torque - F16H 59/105: {consisting of electrical switches or sensors} - F16H 2061/1284: {the failing part is a sensor} - F16H 2063/508: {for limiting transmission input torque, e.g. to prevent damage of transmission parts} - 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 ## Abstract A system includes: a shift mechanism; and a position detecting device detecting an operating position of the shift mechanism on the basis of an output signal of a sensor attached to the shift mechanism. An execution mode of a driving force limiting process that limits driving force is set on the basis of the operating position that is detected by the position detecting device. The driving force limiting process is executed on the basis of the execution mode of the driving force limiting process and a vehicle operation state. When it is determined that there is an abnormality in the position detecting device in a state that the driving force limiting process is not executed, setting the execution mode on the basis of the operating position of the shift mechanism is prohibited, and execution of the driving force limiting process is allowed on the basis of the vehicle operation state. ## Claims ### Claim 1 A driving control system for a vehicle, comprising: a shift mechanism that is operated to selectively shift into one of operating positions, that is, a driving position in which driving force that is output from a prime mover is transmitted to a wheel and a non-driving position in which transmission of the driving force from the prime mover to the wheel is interrupted; a position detecting device that detects the operating position of the shift mechanism on the basis of an output signal of a sensor attached to the shift mechanism; and a controller that sets an execution mode of a driving force limiting process that limits the driving force on the basis of the operating position that is detected by the position detecting device, and that executes the driving force limiting process on the basis of the execution mode and a vehicle operation state that is an operation state of the vehicle, wherein when the controller determines that there is an abnormality in the position detecting device in a state that the driving force limiting process is not executed, the controller prohibits setting the execution mode based on the operating position, and allows the driving force limiting process to be executed on the basis of the vehicle operation state. ### Claim 2 (depends on 1) The driving control system according to claim 1, wherein the vehicle operation state is an operation amount of an accelerator operation member. ### Claim 3 (depends on 1) The driving control system according to claim 1, wherein the controller sets the execution mode such that a degree of limiting the driving force is increased when the operating position is a backward travel position as compared with when the operating position is a forward travel position. ### Claim 4 (depends on 1) The driving control system according to claim 1, wherein the controller sets the execution mode such that the driving force is limited when the operating position is a backward travel position in which the vehicle travels backward and limiting the driving force is prohibited when the operating position is a forward travel position in which the vehicle travels forward. ### Claim 5 (depends on 1) The driving control system according to claim 1, wherein the execution mode is whether to execute the driving force limiting process. ### Claim 6 A driving control system for a vehicle, comprising: a shift mechanism that is operated to selectively shift into one of operating positions, that is, a driving position in which driving force that is output from a prime mover is transmitted to a wheel and a non-driving position in which transmission of the driving force from the prime mover to the wheel is interrupted; a position detecting device that detects the operating position of the shift mechanism on the basis of an output signal of a sensor attached to the shift mechanism; and a controller that sets an execution mode of a driving force limiting process that limits the driving force on the basis of the operating position that is detected by the position detecting device, and that executes the driving force limiting process on the basis of the execution mode and a vehicle operation state that is an operation state of the vehicle, wherein when the controller determines that there is an abnormality in the position detecting device in a state that the driving force limiting process is being executed, the controller holds the execution mode that has been set immediately before the abnormality occurs. ### Claim 7 (depends on 6) The driving control system according to claim 6, wherein the controller executes the driving force limiting process when the operating position is shifted from the non-driving position to the driving position in a state where the accelerator operation member is operated, and the vehicle operation state is an operation amount of the accelerator operation member. ### Claim 8 (depends on 6) The driving control system according to claim 6, wherein the controller sets the execution mode such that a degree of limiting the driving force is increased when the operating position is a backward travel position as compared with when the operating position is a forward travel position. ### Claim 9 (depends on 6) The driving control system according to claim 6, wherein the controller sets the execution mode such that the driving force is limited when the operating position is a backward travel position in which the vehicle travels backward and limiting the driving force is prohibited when the operating position is a forward travel position in which the vehicle travels forward. ### Claim 10 (depends on 6) The driving control system according to claim 6, wherein the execution mode is whether to execute the driving force limiting process. ### Claim 11 A driving control system for a vehicle, comprising: a shift mechanism that is operated to selectively shift into one of operating positions, that is, a driving position in which driving force that is output from a prime mover is transmitted to a wheel and a non-driving position in which transmission of the driving force from the prime mover to the wheel is interrupted; a position detecting device that detects the operating position of the shift mechanism on the basis of an output signal of a sensor attached to the shift mechanism; and a controller that sets an execution mode of a driving force limiting process that limits the driving force on the basis of the operating position that is detected by the position detecting device, and that executes the driving force limiting process on the basis of the execution mode and a vehicle operation state that is an operation state of the vehicle, wherein when the controller determines that there is an abnormality in the position detecting device in a state that the driving force limiting process is not executed, the controller prohibits execution of the driving force limiting process. ### Claim 12 (depends on 11) The driving control system according to claim 11, wherein the controller executes the driving force limiting process when the operating position is shifted from the non-driving position to the driving position in a state where the accelerator operation member is operated, and the vehicle operation state is an operation amount of the accelerator operation member. ### Claim 13 (depends on 11) The driving control system according to claim 11, wherein the controller sets the execution mode such that a degree of limiting the driving force is increased when the operating position is a backward travel position as compared with when the operating position is a forward travel position. ### Claim 14 (depends on 11) The driving control system according to claim 11, wherein the controller sets the execution mode such that the driving force is limited when the operating position is a backward travel position in which the vehicle travels backward and limiting the driving force is prohibited when the operating position is a forward travel position in which the vehicle travels forward. ### Claim 15 (depends on 11) The driving control system according to claim 11, wherein the execution mode is whether to execute the driving force limiting process. ### Claim 16 A driving control system for a vehicle, comprising: a shift mechanism that is operated to selectively shift into one of operating positions, that is, a driving position in which driving force that is output from a prime mover is transmitted to a wheel and a non-driving position in which transmission of the driving force from the prime mover to the wheel is interrupted; a position detecting device that detects the operating position of the shift mechanism on the basis of an output signal of a sensor attached to the shift mechanism; and a controller that sets an execution mode of a driving force limiting process that limits the driving force on the basis of the operating position that is detected by the position detecting device, and that executes the driving force limiting process on the basis of the execution mode and a vehicle operation state that is an operation state of the vehicle, wherein when there is an abnormality in the position detecting device, the controller uses an operating position of the shift mechanism, that is estimated on the basis of a driving state of the vehicle, as a setting parameter for setting the execution mode of the driving force limiting process, instead of the operating position that is detected by the position detecting device. ### Claim 17 (depends on 16) The driving control system according to claim 16, wherein the vehicle includes an automatic transmission that automatically carries out gear shift operation and a speed ratio detecting device that detects a speed ratio, and when there is an abnormality in the position detecting device, the controller determines whether the vehicle is travelling forward on the basis of the speed ratio that is detected by the speed ratio detecting device, and sets a result of the determination as the setting parameter. ### Claim 18 (depends on 16) The driving control system according to claim 16, wherein the controller sets the execution mode such that a degree of limiting the driving force is increased when the operating position is a backward travel position as compared with when the operating position is a forward travel position. ### Claim 19 (depends on 16) The driving control system according to claim 16, wherein the controller sets the execution mode such that the driving force is limited when the operating position is a backward travel position in which the vehicle travels backward and limiting the driving force is prohibited when the operating position is a forward travel position in which the vehicle travels forward. ### Claim 20 (depends on 16) The driving control system according to claim 16, wherein the execution mode is whether to execute the driving force limiting process.