Apparatus for controlling the amount of waste heat of an engine
US8612117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Mar 6, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus is provided for application to a waste heat reuse system that recovers and reuses engine waste heat, and for controlling the amount of waste heat based on a requested heat amount of a heat utilization request. In the apparatus, an overlap angle between a valve-opening period of an intake valve and that of an exhaust valve of the engine is controlled based on an engine driving condition. Ignition timing of the engine is controlled to fall on maximum-efficient timing that minimizes fuel consumption in a current engine driving condition. When a requested heat amount cannot be satisfied, overlap-increase control is performed to increase an overlap angle, and ignition advance control is performed to advance ignition timing with reference to a maximum-efficient timing that corresponds to the increased overlap angle. Waste heat amount of the engine is controlled with the overlap-increase control and the ignition advance control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.