APPARATUS FOR CONTROLLING VEHICLE

• US 20140330500A1
• Filed: 12/21/2011
• Published: 11/06/2014
• Est. Priority Date: 12/21/2011
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Minase, Yuki, Takagi, Masashi, Ohbayashi, Motonari, Shimada, Hiroshi, Takagi, Toshihiro
• Granted Patent: US 9,423,802 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 2050/0215 Sensor drifts or sensor failures
• CPC Class Codes: B60W 2050/0295 Inhibiting action of specific actuators or systems
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2520/105 Longitudinal acceleration
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2552/15 Road slope, i.e. the inclination of a road segment in the longitudinal direction
• CPC Class Codes: B60W 2710/0666 Engine torque
• CPC Class Codes: B60W 2720/10 Longitudinal speed
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 30/188 Controlling power parameters of the driveline, e.g. determining the required power
• CPC Class Codes: B60W 50/029 Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
• CPC Class Codes: B60W 50/038 Limiting the input power, torque or speed
• CPC Class Codes: F02D 2200/501 Vehicle speed
• CPC Class Codes: F02D 2250/26 by applying a torque limit
• CPC Class Codes: F02D 41/021 Introducing corrections for particular conditions exterior to the engine conjoint control of vehicle sub-units for propelling the vehicle B60W30/18
• CPC Class Codes: F02D 41/10 for acceleration
• CPC Class Codes: F02D 41/222 relating to the failure of sensors or parameter detection devices
• CPC Class Codes: G05D 13/04 providing for emergency tripping of an engine in case of exceeding maximum speed

Abstract

An electronic control unit reduces output of an engine using a detection value of an acceleration sensor such that acceleration of a vehicle does not exceed a predetermined threshold value. In a case where there is an abnormality in the acceleration sensor, the electronic control unit sets the acceleration threshold value to be greater than that in a case where there is no abnormality, and the electronic control unit limits the vehicle speed to a predetermined value or slower.

Claims

1. An apparatus for controlling a vehicle, comprising:

an acceleration detection section that detects an acceleration of the vehicle; and

a control section that executes an output reduction process of reducing an output from a power source of the vehicle with use of a value detected by the acceleration detection section, such that the acceleration does not exceed a predetermined threshold value,

wherein, when there is an abnormality in the acceleration detection section, the control section sets the threshold value to be greater than that in a case in which there is no abnormality in the acceleration detection section, and limits a vehicle speed to a predetermined value or lower.

2. An apparatus for controlling a vehicle, comprising:

an acceleration detection section that detects an acceleration of the vehicle; and

a control section that executes an output reduction process of reducing an output from a power source of the vehicle with use of a value detected by the acceleration detection section, such that the acceleration does not exceed a predetermined threshold value,

wherein, when there is an abnormality in the acceleration detection section, the control section inhibits execution of the output reduction process and limits a vehicle speed to a predetermined value or lower.

3. An apparatus for controlling a vehicle, comprising:

a detection section that detects a parameter that indicates a traveling state of the vehicle that varies according to an amount of accelerator operation; and

a control section that executes an output reduction process of reducing an output from a power source of the vehicle with use of the parameter during operation of the power source,

wherein, when there is an abnormality in the detection section, the control section sets a degree of reduction in output by the output reduction process to be smaller than that in a case in which there is no abnormality in the detection section.

4. The apparatus according to claim 3, wherein the control section sets the degree of reduction in output at 0 when there is an abnormality in the detection section.

5. The apparatus according to claim 3, wherein the parameter is a value detected by an acceleration sensor that detects the acceleration of the vehicle.