초록 ▼

A method for operating a powertrain in a hybrid vehicle is provided. The method comprises providing torque to drive the vehicle from both an electric drive and an engine, where engine torque is varied within an allowable range. When operating the engine at an edge of the range, the range may be adju

A method for operating a powertrain in a hybrid vehicle is provided. The method comprises providing torque to drive the vehicle from both an electric drive and an engine, where engine torque is varied within an allowable range. When operating the engine at an edge of the range, the range may be adjusted based on conditions. In this way, it is possible to compensate for an engine that has a variable maximum torque output depending on operating conditions.

대표청구항 ▼

What is claimed is: 1. A method for operating a powertrain in a vehicle, the powertrain including an electric drive and an internal combustion engine, the method comprising:providing torque to drive the vehicle from both the electric drive and the engine, where engine torque is varied within an allo

What is claimed is: 1. A method for operating a powertrain in a vehicle, the powertrain including an electric drive and an internal combustion engine, the method comprising:providing torque to drive the vehicle from both the electric drive and the engine, where engine torque is varied within an allowable range;when operating the engine at an edge of the allowable range, adjusting the allowable range based on whether a selected operating condition can be provided by the engine;limiting an engine torque commanded by a vehicle system controller to an engine controller to be within the adjusted allowable range and compensating limitation of the engine torque by increasing torque from the electric drive to meet a driver request;suspending the adjusting of the range if operating near wide-open throttle conditions, where the selected operating condition is engine torque; andsuspending the adjusting of the allowable range based on engine torque if purging more than a selected amount or concentration of fuel vapors into the internal combustion engine from a fuel system, and adjusting the allowable range based on whether a vacuum amount is provided.