Systems and methods for vehicle load detection and response
First Claim
1. A method of controlling an operation of an electric vehicle, the method comprising:
- obtaining real-time torque/speed measurements from a powertrain of the electric vehicle over a period of time;
determining a current powertrain operating condition of the electric vehicle by comparing the torque/speed measurements to a number of different torque/speed values indicative of different operating conditions, wherein the torque/speed values are determined based on one or more reference curves; and
adjusting the operation of the electric vehicle based on the determined current powertrain operating condition.
1 Assignment
0 Petitions
Accused Products
Abstract
A torque-speed curve or data of load that is used as a standard to determine an external condition in which an electric vehicle is operating such as incline or no incline, head wind or no headwind, high temperature or low temperature. The system compares samples of actual torque-speed of load data to the standard. Based on the comparison, the system determines the external condition (going up a hill, traveling into a headwind, operating at high temperature) or an abnormal operation of the vehicle powertrain, for example, low tire pressure, elevated friction, wheels out of alignment. Based on the determination, the system takes an action to govern a maximum torque output of the motor to control temperature of the vehicle battery; to raise a wind deflector; to govern maximum speed of the vehicle to reduce danger resulting from low tire pressure, elevated powertrain friction or out of alignment wheels; or to initiate an indication of abnormal conditions.
-
Citations
34 Claims
-
1. A method of controlling an operation of an electric vehicle, the method comprising:
-
obtaining real-time torque/speed measurements from a powertrain of the electric vehicle over a period of time; determining a current powertrain operating condition of the electric vehicle by comparing the torque/speed measurements to a number of different torque/speed values indicative of different operating conditions, wherein the torque/speed values are determined based on one or more reference curves; and adjusting the operation of the electric vehicle based on the determined current powertrain operating condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A vehicle, comprising:
-
a prime mover coupled to drive at least one wheel of the vehicle; a main electrical power storage device that stores power; a power supply coupled and operable to selectively transfer electrical power between the main electrical power storage device and the prime mover; and a controller communicatively coupled to control the power supply, wherein the controller; obtains real-time torque/speed measurements from a powertrain of the vehicle over a period of time; determines a current powertrain operating condition of the vehicle by comparing the torque/speed measurements to a number of different torque/speed values indicative of different operating conditions, wherein the torque/speed values are determined based on one or more reference curves; and adjusts an operation of the vehicle based on the determined current powertrain operating condition. - View Dependent Claims (30, 31)
-
-
32. A non-transitory computer readable storage medium having computer executable instructions stored thereon that, when executed, cause at least one processor to:
-
obtain real-time torque/speed measurements from a powertrain of a vehicle over a period of time; determine a current powertrain operating condition of the electric vehicle by comparing the torque/speed measurements to a number of different torque/speed values indicative of different operating conditions, wherein the torque/speed values are determined based on one or more reference curves; and adjust an operation of the electric vehicle based on the determined current powertrain operating condition. - View Dependent Claims (33, 34)
-
Specification