System and method of controlling combustion in an engine having an in-cylinder pressure sensor
US9670851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2011 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Mar 30, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/401
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control system for an internal combustion engine comprises pressure sensing means, memory means, processing means, and fuel injection control means. Pressure sensing means generate in-cylinder pressure data used to calculate total heat generated during combustion cycle. Memory means store predetermined crank angle data, such as CA50 crank angle data, for variety of engine operating conditions. A CA50 crank angle is a crank angle position where fifty percent of total heat is generated. Memory means additionally stores allowable start of injection crank angle data. Processing means determine an observed CA50 crank angle. Processing means conducts comparison of at least one of the predetermined CA50 crank angle data against the observed CA50 crank angle to generate a start of fuel injection crank angle which impacts the observed CA50 crank angle during subsequent combustion cycle. Fuel injection control means controls start of fuel injection crank angle generated by the processing means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.