Control system for torque source inertia compensation, method, vehicle and computer program
AssigneeJaguar Land Rover Limited
InventorsMatthew SULLIVAN, Olivier ROQUES, Matthew HANCOCK, William HARRISON
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Abstract
The present invention relates to a control system for compensating for variable inertia in a vehicle powertrain, the method comprising: determining (404) whether a torque source (202) is coupled to a wheel (FL, FR), and applying (408, 410) a torque change in dependence on angular acceleration associated with the torque source (202), in dependence on whether the torque source is coupled to the wheel. The present invention further relates to a corresponding method, vehicle, system and computer software.
Claims15
A control system for compensating for variable inertia in a vehicle powertrain of a hybrid vehicle having a first torque source comprising an internal combustion engine and a second torque source comprising an electric motor that can drive the vehicle while the first torque source is disconnected from wheels of the vehicle powertrain, the control system comprising one or more controllers, wherein the control system is configured to:
- determine whether a torque source is coupled to a wheel;
- and
- apply a torque change in dependence on an angular acceleration associated with the first torque source, in dependence on whether the first torque source is coupled to the wheel;
- wherein
- the angular acceleration is obtained by obtaining the acceleration from a shaft speed sensor downstream of at least one gear train of a transmission, and then converting the acceleration to engine angular acceleration in dependence on a gear ratio of the at least one gear train.
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A method of compensating for variable inertia in a vehicle powertrain of a hybrid vehicle having a first torque source comprising an internal combustion engine and a second torque source comprising an electric motor that can drive the vehicle while the first torque source is disconnected from wheels of the vehicle, wherein the method comprises:
- determining whether a torque source is coupled to a wheel;
- and
- applying a torque change in dependence on angular acceleration associated with the first torque source, in dependence on whether the first torque source is coupled to the wheel;
- wherein
- the angular acceleration is obtained by obtaining the acceleration from a shaft speed sensor downstream of at least one gear train of a transmission, and then converting the acceleration to engine angular acceleration in dependence on a gear ratio of the at least one gear train.
Dependencies are inferred from the claim text.