Method for determining an air mass flow into cylinders of an internal combustion engine with the aid of a model

US5889205A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Stefan Treinies · Regensburg, DE
• Maximilian Engl · Friedberg, DE
• Gerd Rösel · Dresden, DE

Key dates

• Filing date: Oct 10, 1997
• Grant date: Mar 30, 1999
• Expiry date: Oct 10, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/0402
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for determining an air mass flow into cylinders of an internal combustion engine with the aid of a model includes calculating an air mass actually flowing into a cylinder with the aid of an intake tube filling model supplying a load variable on the basis of which an injection time is determined, from input variables relating to throttle opening angle and ambient pressure and from parameters representing valve control. The load variable is used for prediction in order to estimate the load variable at an instant which is at least one sampling step later than a current calculation of the injection time.