Process for finding an additional quantity of fuel to be injected during reinjection in an internal combustion engine

US5839409A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Helmut Denz · Stuttgart, DE
• Manfred Pfitz · Leinfelden, DE
• Klaus Bottcher · Oberriexingen, DE
• Alfred Kloos · Rutesheim, DE

Key dates

• Filing date: Oct 6, 1997
• Grant date: Nov 24, 1998
• Expiry date: Oct 6, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/047
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for determining an additional injected quantity upon reactivation of an internal combustion engine by multiplying a load-dependent wall-film quantity by a correction factor. The correction factor is modulated up during the coasting deactivation time until reactivation with a first time constant. The correction factor is modulated back down during reactivation with a second time constant.