Control of supercharger
US6510692B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2002 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Feb 20, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The intake air amount of an engine (1) is controlled by a variable nozzle (53) of a turbocharger (50). A controller (41) calculates an open loop control value of a drive signal of the variable nozzle (53) based on a running state of the engine (1), and calculates a feedback correction amount comprising an integral correction value of the drive signal such that the intake air amount coincides with a target intake fresh air amount (S367). It also calculates a learning value based on the integral correction value when the intake air amount coincides with the target intake air amount (S395, S400), and modifies the feedback correction amount such that the sum of the learning value and feedback correction amount is constant (S366). In this way, the response of intake air amount control or supercharging pressure control is enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.