초록

A system and method is disclosed for operating an internal combustion engine disposed in a hybrid vehicle, in which engine operation is selected to provide secondary vehicular functions, such as cabin heating, cabin cooling, and exhaust aftertreatment of exhaust components.

대표청구항 ▼

The invention claimed is: 1. A vehicle system comprising: at least two machines capable of being coupled to driving wheels of the vehicle, one of said machines being a diesel internal combustion engine, and another of said machines being an electric motor; at least one catalyst coupled to said eng

The invention claimed is: 1. A vehicle system comprising: at least two machines capable of being coupled to driving wheels of the vehicle, one of said machines being a diesel internal combustion engine, and another of said machines being an electric motor; at least one catalyst coupled to said engine for reducing NOx generated by the internal combustion engine depending on exhaust gas air/fuel ratio; and an engine controller operably connected to said machines to determine when conditions should be adjusted based on conditions of said catalyst and to determine whether a current engine operating condition is within an acceptable engine operating range. 2. The vehicle system of claim 1 wherein said catalyst is a lean NOx trap. 3. The vehicle system of claim 1 wherein said catalyst is a lean NOx catalyst. 4. The vehicle system of claim 1 wherein said catalyst is a three-way catalyst configured to convert carbon monoxide, hydrocarbons, and NOx in a stoichiometric exhaust. 5. The vehicle system of claim 1 further comprising a particulate filter. 6. The vehicle system of claim 1 further comprising an energy reservoir configured to store energy generated from at least one of said machines. 7. The vehicle system of claim 1 wherein said controller further adjusts an engine operating condition based on said conditions of said catalyst. 8. The vehicle system of claim 7 wherein energy reservoir comprises a battery.