Hybrid vehicle and control method for hybrid vehicle
US9180871B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 23, 2012 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Nov 23, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/93
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid vehicle including an engine having a catalyst in an exhaust passage, first and second motor generators, a battery and a power transmission mechanism coupling a drive shaft, the engine and the motor generators by a gear mechanism such that torque is transmittable, and its control method, are provided. When a coolant temperature is a threshold or below, catalyst warm-up operation for starting the engine and retarding an ignition timing by a retardation amount is executed. When a battery level is a threshold or below, forced charging operation for starting the engine and charging the battery by driving the first motor generator is executed. During the forced charging operation, an engine load is changed on the basis of the battery level. When the catalyst warm-up operation is executed during the forced charging operation, the retardation amount for facilitating warm-up of the catalyst is reduced as the engine load increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.