System for estimating peak cylinder pressure in an internal combustion engine
US6782737B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Apr 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for estimating peak cylinder pressure in an internal combustion engine includes a pressure sensor producing a pressure signal indicative of pressure within an intake manifold of the engine, a temperature sensor producing a temperature signal indicative of temperature within the intake manifold, means for determining a charge fuel ratio corresponding to a ratio of in-cylinder trapped charge mass and in-cylinder trapped fuel mass, and a control computer determining a start-of-injection value corresponding to a start of fuel injection into the engine. The control computer is operable to estimate peak cylinder pressure as a function of the pressure signal, the temperature signal, the charge fuel ratio and the start-of-injection value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.