Patent · US Active

Method for operating a spark ignition internal combustion engine with an exhaust gas turbocharger

US9689305B2 · kind B2 · utility

1Cited by

15References

3Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Christian Doenitz · Unterschleißheim, DE
Christoph Voser · Zürich, CH
Norbert Zsiga · Heilbronn, DE
Christopher Onder · Weisslingen, CH
Lino Guzzella · Wallisellen, CH

Key dates

Filing date	May 19, 2015
Grant date	Jun 27, 2017
Priority date	—
Expiry date	Oct 8, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for operating an internal-combustion engine includes increasing a torque demand, controlling a throttle valve, opening an air injection valve and continuously measuring first and second gas pressures with an electronic control unit. The method also includes closing the throttle valve, measuring a first gas mass flow, retarding an ignition angle, and closing the air injection valve. In the method the throttle valve is opened with the control unit when the first gas pressure p1 equals the second gas pressure p2. The method also includes continuously controlling the fuel system with the electronic control unit to have a stoichiometric fuel/air ratio of the internal combustion engine being constantly combusting in the internal combustion engine.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.